Adding upstream version 2.2.0.upstream/2.2.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

54 files changed, 22890 insertions, 0 deletions

diff --git a/src/bin/netconf/Makefile.am b/src/bin/netconf/Makefile.am
new file mode 100644
index 0000000..b3b762b
--- /dev/null
+++ b/src/bin/netconf/Makefile.am
@@ -0,0 +1,130 @@
+SUBDIRS = . tests
+
+AM_CPPFLAGS = -I$(top_srcdir)/src/lib -I$(top_builddir)/src/lib
+AM_CPPFLAGS += -I$(top_srcdir)/src/bin -I$(top_builddir)/src/bin
+AM_CPPFLAGS += -I$(top_srcdir)/src -I$(top_builddir)/src
+AM_CPPFLAGS += $(BOOST_INCLUDES) $(CRYPTO_CFLAGS) $(CRYPTO_INCLUDES)
+AM_CPPFLAGS += $(SYSREPO_CPPFLAGS)
+AM_CPPFLAGS += $(SYSREPO_INCLUDEDIR)
+
+AM_CXXFLAGS = $(KEA_CXXFLAGS)
+
+if USE_STATIC_LINK
+AM_LDFLAGS = -static
+endif
+
+CLEANFILES  = *.gcno *.gcda
+
+#EXTRA_DIST += netconf.dox netconf_hooks.dox
+
+# convenience archive
+
+noinst_LTLIBRARIES = libnetconf.la
+
+libnetconf_la_SOURCES  = control_socket.cc control_socket.h
+libnetconf_la_SOURCES += http_control_socket.cc http_control_socket.h
+libnetconf_la_SOURCES += stdout_control_socket.cc stdout_control_socket.h
+libnetconf_la_SOURCES += unix_control_socket.cc unix_control_socket.h
+libnetconf_la_SOURCES += netconf.cc netconf.h
+libnetconf_la_SOURCES += netconf_cfg_mgr.cc netconf_cfg_mgr.h
+libnetconf_la_SOURCES += netconf_config.cc netconf_config.h
+libnetconf_la_SOURCES += netconf_controller.cc netconf_controller.h
+libnetconf_la_SOURCES += netconf_log.cc netconf_log.h
+libnetconf_la_SOURCES += netconf_parser.cc netconf_parser.h
+libnetconf_la_SOURCES += netconf_process.cc netconf_process.h
+libnetconf_la_SOURCES += parser_context.cc parser_context.h
+libnetconf_la_SOURCES += parser_context_decl.h
+libnetconf_la_SOURCES += simple_parser.cc simple_parser.h
+libnetconf_la_SOURCES += location.hh
+libnetconf_la_SOURCES += netconf_lexer.ll netconf_parser.yy
+libnetconf_la_SOURCES += netconf_messages.h netconf_messages.cc
+
+EXTRA_DIST = netconf_messages.mes
+EXTRA_DIST += netconf_lexer.ll
+EXTRA_DIST += netconf_parser.yy
+
+sbin_PROGRAMS = kea-netconf
+
+kea_netconf_SOURCES  = main.cc
+
+kea_netconf_LDADD  = libnetconf.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/cfgrpt/libcfgrpt.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/process/libkea-process.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/yang/libkea-yang.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/config/libkea-cfgclient.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/http/libkea-http.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/hooks/libkea-hooks.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/cc/libkea-cc.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/asiolink/libkea-asiolink.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/log/libkea-log.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/util/libkea-util.la
+kea_netconf_LDADD += $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
+kea_netconf_LDADD += $(LOG4CPLUS_LIBS) $(CRYPTO_LIBS) $(BOOST_LIBS) $(SYSREPO_LIBS)
+
+
+kea_netconfdir = $(pkgdatadir)
+
+# If we want to get rid of all generated messages files, we need to use
+# make maintainer-clean. The proper way to introduce custom commands for
+# that operation is to define maintainer-clean-local target. However,
+# make maintainer-clean also removes Makefile, so running configure script
+# is required.  To make it easy to rebuild messages without going through
+# reconfigure, a new target messages-clean has been added.
+maintainer-clean-local:
+	rm -f netconf_messages.h netconf_messages.cc
+
+# To regenerate messages files, one can do:
+#
+# make messages-clean
+# make messages
+#
+# This is needed only when a .mes file is modified.
+messages-clean: maintainer-clean-local
+
+if GENERATE_MESSAGES
+
+# Define rule to build logging source files from message file
+messages: netconf_messages.h netconf_messages.cc
+	@echo Message files regenerated
+
+netconf_messages.h netconf_messages.cc: netconf_messages.mes
+	$(top_builddir)/src/lib/log/compiler/kea-msg-compiler $(top_srcdir)/src/bin/netconf/netconf_messages.mes
+
+else
+
+messages netconf_messages.h netconf_messages.cc:
+	@echo Messages generation disabled. Configure with --enable-generate-messages to enable it.
+
+endif
+
+if GENERATE_PARSER
+
+# Generate parser first.
+all-recursive: netconf_lexer.cc location.hh netconf_parser.cc netconf_parser.h
+
+parser: netconf_lexer.cc location.hh netconf_parser.cc netconf_parser.h
+	@echo "Flex/bison files regenerated"
+
+# --- Flex/Bison stuff below --------------------------------------------------
+# When debugging grammar issues, it's useful to add -v to bison parameters.
+# bison will generate parser.output file that explains the whole grammar.
+# It can be used to manually follow what's going on in the parser.
+# This is especially useful if yydebug_ is set to 1 as that variable
+# will cause parser to print out its internal state.
+# Call flex with -s to check that the default rule can be suppressed
+# Call bison with -W to get warnings like unmarked empty rules
+# Note C++11 deprecated register still used by flex < 2.6.0
+location.hh netconf_parser.cc netconf_parser.h: netconf_parser.yy
+	$(YACC) -Wno-yacc --defines=netconf_parser.h --report=all \
+	--report-file=netconf_parser.report -o netconf_parser.cc \
+	netconf_parser.yy
+
+netconf_lexer.cc: netconf_lexer.ll
+	$(LEX) --prefix netconf_ -o netconf_lexer.cc netconf_lexer.ll
+
+else
+
+parser location.hh netconf_parser.cc netconf_parser.h netconf_lexer.cc:
+	@echo Parser generation disabled. Configure with --enable-generate-parser to enable it.
+
+endif
diff --git a/src/bin/netconf/Makefile.in b/src/bin/netconf/Makefile.in
new file mode 100644
index 0000000..4fd1475
--- /dev/null
+++ b/src/bin/netconf/Makefile.in
@@ -0,0 +1,1071 @@
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+	-I$(top_srcdir)/src/bin -I$(top_builddir)/src/bin \
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+	$(CRYPTO_CFLAGS) $(CRYPTO_INCLUDES) $(SYSREPO_CPPFLAGS) \
+	$(SYSREPO_INCLUDEDIR)
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+#EXTRA_DIST += netconf.dox netconf_hooks.dox
+
+# convenience archive
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+libnetconf_la_SOURCES = control_socket.cc control_socket.h \
+	http_control_socket.cc http_control_socket.h \
+	stdout_control_socket.cc stdout_control_socket.h \
+	unix_control_socket.cc unix_control_socket.h netconf.cc \
+	netconf.h netconf_cfg_mgr.cc netconf_cfg_mgr.h \
+	netconf_config.cc netconf_config.h netconf_controller.cc \
+	netconf_controller.h netconf_log.cc netconf_log.h \
+	netconf_parser.cc netconf_parser.h netconf_process.cc \
+	netconf_process.h parser_context.cc parser_context.h \
+	parser_context_decl.h simple_parser.cc simple_parser.h \
+	location.hh netconf_lexer.ll netconf_parser.yy \
+	netconf_messages.h netconf_messages.cc
+EXTRA_DIST = netconf_messages.mes netconf_lexer.ll netconf_parser.yy
+kea_netconf_SOURCES = main.cc
+kea_netconf_LDADD = libnetconf.la \
+	$(top_builddir)/src/lib/cfgrpt/libcfgrpt.la \
+	$(top_builddir)/src/lib/process/libkea-process.la \
+	$(top_builddir)/src/lib/yang/libkea-yang.la \
+	$(top_builddir)/src/lib/config/libkea-cfgclient.la \
+	$(top_builddir)/src/lib/http/libkea-http.la \
+	$(top_builddir)/src/lib/hooks/libkea-hooks.la \
+	$(top_builddir)/src/lib/cc/libkea-cc.la \
+	$(top_builddir)/src/lib/asiolink/libkea-asiolink.la \
+	$(top_builddir)/src/lib/log/libkea-log.la \
+	$(top_builddir)/src/lib/util/libkea-util.la \
+	$(top_builddir)/src/lib/exceptions/libkea-exceptions.la \
+	$(LOG4CPLUS_LIBS) $(CRYPTO_LIBS) $(BOOST_LIBS) $(SYSREPO_LIBS)
+kea_netconfdir = $(pkgdatadir)
+all: all-recursive
+
+.SUFFIXES:
+.SUFFIXES: .cc .ll .lo .o .obj .yy
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign src/bin/netconf/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign src/bin/netconf/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
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+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(sbindir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(sbindir)" || exit 1; \
+	fi; \
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+	done | \
+	sed -e 'p;s,.*/,,;n;h' \
+	    -e 's|.*|.|' \
+	    -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
+	sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) files[d] = files[d] " " $$1; \
+	    else { print "f", $$3 "/" $$4, $$1; } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	    if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	    test -z "$$files" || { \
+	    echo " $(INSTALL_PROGRAM_ENV) $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL_PROGRAM) $$files '$(DESTDIR)$(sbindir)$$dir'"; \
+	    $(INSTALL_PROGRAM_ENV) $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL_PROGRAM) $$files "$(DESTDIR)$(sbindir)$$dir" || exit $$?; \
+	    } \
+	; done
+
+uninstall-sbinPROGRAMS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(sbin_PROGRAMS)'; test -n "$(sbindir)" || list=; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	  sed -e 'h;s,^.*/,,;s/$(EXEEXT)$$//;$(transform)' \
+	      -e 's/$$/$(EXEEXT)/' \
+	`; \
+	test -n "$$list" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(sbindir)' && rm -f" $$files ")"; \
+	cd "$(DESTDIR)$(sbindir)" && rm -f $$files
+
+clean-sbinPROGRAMS:
+	@list='$(sbin_PROGRAMS)'; test -n "$$list" || exit 0; \
+	echo " rm -f" $$list; \
+	rm -f $$list || exit $$?; \
+	test -n "$(EXEEXT)" || exit 0; \
+	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
+	echo " rm -f" $$list; \
+	rm -f $$list
+
+clean-noinstLTLIBRARIES:
+	-test -z "$(noinst_LTLIBRARIES)" || rm -f $(noinst_LTLIBRARIES)
+	@list='$(noinst_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+libnetconf.la: $(libnetconf_la_OBJECTS) $(libnetconf_la_DEPENDENCIES) $(EXTRA_libnetconf_la_DEPENDENCIES) 
+	$(AM_V_CXXLD)$(CXXLINK)  $(libnetconf_la_OBJECTS) $(libnetconf_la_LIBADD) $(LIBS)
+
+kea-netconf$(EXEEXT): $(kea_netconf_OBJECTS) $(kea_netconf_DEPENDENCIES) $(EXTRA_kea_netconf_DEPENDENCIES) 
+	@rm -f kea-netconf$(EXEEXT)
+	$(AM_V_CXXLD)$(CXXLINK) $(kea_netconf_OBJECTS) $(kea_netconf_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/control_socket.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/http_control_socket.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/main.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_cfg_mgr.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_config.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_controller.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_lexer.Plo@am__quote@ # am--include-marker
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+$(am__depfiles_remade):
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+am--depfiles: $(am__depfiles_remade)
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+	$(AM_V_LEX)$(am__skiplex) $(SHELL) $(YLWRAP) $< $(LEX_OUTPUT_ROOT).c $@ -- $(LEXCOMPILE)
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+.yy.cc:
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+
+mostlyclean-libtool:
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+
+clean-libtool:
+	-rm -rf .libs _libs
+
+# This directory's subdirectories are mostly independent; you can cd
+# into them and run 'make' without going through this Makefile.
+# To change the values of 'make' variables: instead of editing Makefiles,
+# (1) if the variable is set in 'config.status', edit 'config.status'
+#     (which will cause the Makefiles to be regenerated when you run 'make');
+# (2) otherwise, pass the desired values on the 'make' command line.
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+	if $(am__make_keepgoing); then \
+	  failcom='fail=yes'; \
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+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
+	      || $(MKDIR_P) "$(distdir)/$$subdir" \
+	      || exit 1; \
+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-recursive
+all-am: Makefile $(PROGRAMS) $(LTLIBRARIES)
+installdirs: installdirs-recursive
+installdirs-am:
+	for dir in "$(DESTDIR)$(sbindir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-rm -f netconf_lexer.cc
+	-rm -f netconf_parser.cc
+clean: clean-recursive
+
+clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
+	clean-sbinPROGRAMS mostlyclean-am
+
+distclean: distclean-recursive
+		-rm -f ./$(DEPDIR)/control_socket.Plo
+	-rm -f ./$(DEPDIR)/http_control_socket.Plo
+	-rm -f ./$(DEPDIR)/main.Po
+	-rm -f ./$(DEPDIR)/netconf.Plo
+	-rm -f ./$(DEPDIR)/netconf_cfg_mgr.Plo
+	-rm -f ./$(DEPDIR)/netconf_config.Plo
+	-rm -f ./$(DEPDIR)/netconf_controller.Plo
+	-rm -f ./$(DEPDIR)/netconf_lexer.Plo
+	-rm -f ./$(DEPDIR)/netconf_log.Plo
+	-rm -f ./$(DEPDIR)/netconf_messages.Plo
+	-rm -f ./$(DEPDIR)/netconf_parser.Plo
+	-rm -f ./$(DEPDIR)/netconf_process.Plo
+	-rm -f ./$(DEPDIR)/parser_context.Plo
+	-rm -f ./$(DEPDIR)/simple_parser.Plo
+	-rm -f ./$(DEPDIR)/stdout_control_socket.Plo
+	-rm -f ./$(DEPDIR)/unix_control_socket.Plo
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info: info-recursive
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am: install-sbinPROGRAMS
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+		-rm -f ./$(DEPDIR)/control_socket.Plo
+	-rm -f ./$(DEPDIR)/http_control_socket.Plo
+	-rm -f ./$(DEPDIR)/main.Po
+	-rm -f ./$(DEPDIR)/netconf.Plo
+	-rm -f ./$(DEPDIR)/netconf_cfg_mgr.Plo
+	-rm -f ./$(DEPDIR)/netconf_config.Plo
+	-rm -f ./$(DEPDIR)/netconf_controller.Plo
+	-rm -f ./$(DEPDIR)/netconf_lexer.Plo
+	-rm -f ./$(DEPDIR)/netconf_log.Plo
+	-rm -f ./$(DEPDIR)/netconf_messages.Plo
+	-rm -f ./$(DEPDIR)/netconf_parser.Plo
+	-rm -f ./$(DEPDIR)/netconf_process.Plo
+	-rm -f ./$(DEPDIR)/parser_context.Plo
+	-rm -f ./$(DEPDIR)/simple_parser.Plo
+	-rm -f ./$(DEPDIR)/stdout_control_socket.Plo
+	-rm -f ./$(DEPDIR)/unix_control_socket.Plo
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic \
+	maintainer-clean-local
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am: uninstall-sbinPROGRAMS
+
+.MAKE: $(am__recursive_targets) install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am \
+	am--depfiles check check-am clean clean-generic clean-libtool \
+	clean-noinstLTLIBRARIES clean-sbinPROGRAMS cscopelist-am ctags \
+	ctags-am distclean distclean-compile distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-sbinPROGRAMS install-strip \
+	installcheck installcheck-am installdirs installdirs-am \
+	maintainer-clean maintainer-clean-generic \
+	maintainer-clean-local mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am uninstall-sbinPROGRAMS
+
+.PRECIOUS: Makefile
+
+
+# If we want to get rid of all generated messages files, we need to use
+# make maintainer-clean. The proper way to introduce custom commands for
+# that operation is to define maintainer-clean-local target. However,
+# make maintainer-clean also removes Makefile, so running configure script
+# is required.  To make it easy to rebuild messages without going through
+# reconfigure, a new target messages-clean has been added.
+maintainer-clean-local:
+	rm -f netconf_messages.h netconf_messages.cc
+
+# To regenerate messages files, one can do:
+#
+# make messages-clean
+# make messages
+#
+# This is needed only when a .mes file is modified.
+messages-clean: maintainer-clean-local
+
+# Define rule to build logging source files from message file
+@GENERATE_MESSAGES_TRUE@messages: netconf_messages.h netconf_messages.cc
+@GENERATE_MESSAGES_TRUE@	@echo Message files regenerated
+
+@GENERATE_MESSAGES_TRUE@netconf_messages.h netconf_messages.cc: netconf_messages.mes
+@GENERATE_MESSAGES_TRUE@	$(top_builddir)/src/lib/log/compiler/kea-msg-compiler $(top_srcdir)/src/bin/netconf/netconf_messages.mes
+
+@GENERATE_MESSAGES_FALSE@messages netconf_messages.h netconf_messages.cc:
+@GENERATE_MESSAGES_FALSE@	@echo Messages generation disabled. Configure with --enable-generate-messages to enable it.
+
+# Generate parser first.
+@GENERATE_PARSER_TRUE@all-recursive: netconf_lexer.cc location.hh netconf_parser.cc netconf_parser.h
+
+@GENERATE_PARSER_TRUE@parser: netconf_lexer.cc location.hh netconf_parser.cc netconf_parser.h
+@GENERATE_PARSER_TRUE@	@echo "Flex/bison files regenerated"
+
+# --- Flex/Bison stuff below --------------------------------------------------
+# When debugging grammar issues, it's useful to add -v to bison parameters.
+# bison will generate parser.output file that explains the whole grammar.
+# It can be used to manually follow what's going on in the parser.
+# This is especially useful if yydebug_ is set to 1 as that variable
+# will cause parser to print out its internal state.
+# Call flex with -s to check that the default rule can be suppressed
+# Call bison with -W to get warnings like unmarked empty rules
+# Note C++11 deprecated register still used by flex < 2.6.0
+@GENERATE_PARSER_TRUE@location.hh netconf_parser.cc netconf_parser.h: netconf_parser.yy
+@GENERATE_PARSER_TRUE@	$(YACC) -Wno-yacc --defines=netconf_parser.h --report=all \
+@GENERATE_PARSER_TRUE@	--report-file=netconf_parser.report -o netconf_parser.cc \
+@GENERATE_PARSER_TRUE@	netconf_parser.yy
+
+@GENERATE_PARSER_TRUE@netconf_lexer.cc: netconf_lexer.ll
+@GENERATE_PARSER_TRUE@	$(LEX) --prefix netconf_ -o netconf_lexer.cc netconf_lexer.ll
+
+@GENERATE_PARSER_FALSE@parser location.hh netconf_parser.cc netconf_parser.h netconf_lexer.cc:
+@GENERATE_PARSER_FALSE@	@echo Parser generation disabled. Configure with --enable-generate-parser to enable it.
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/bin/netconf/control_socket.cc b/src/bin/netconf/control_socket.cc
new file mode 100644
index 0000000..56a90ac
--- /dev/null
+++ b/src/bin/netconf/control_socket.cc
@@ -0,0 +1,41 @@
+// Copyright (C) 2018-2022 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file stdout_control_socket.cc
+/// Contains the stdout derived class for control socket communication.
+
+#include <config.h>
+
+#include <netconf/control_socket.h>
+#include <netconf/http_control_socket.h>
+#include <netconf/stdout_control_socket.h>
+#include <netconf/unix_control_socket.h>
+
+using namespace std;
+
+namespace isc {
+namespace netconf {
+
+ControlSocketBasePtr
+controlSocketFactory(CfgControlSocketPtr ctrl_sock) {
+    if (!ctrl_sock) {
+        isc_throw(BadValue, "null control socket configuration");
+    }
+    CfgControlSocket::Type sock_type = ctrl_sock->getType();
+    switch (sock_type) {
+    case CfgControlSocket::Type::UNIX:
+        return (createControlSocket<CfgControlSocket::Type::UNIX>(ctrl_sock));
+    case CfgControlSocket::Type::HTTP:
+        return (createControlSocket<CfgControlSocket::Type::HTTP>(ctrl_sock));
+    case CfgControlSocket::Type::STDOUT:
+        return (createControlSocket<CfgControlSocket::Type::STDOUT>(ctrl_sock));
+    default:
+        isc_throw(BadValue, "Unknown control socket type: " << sock_type);
+    }
+}
+
+} // namespace netconf
+} // namespace isc
diff --git a/src/bin/netconf/control_socket.h b/src/bin/netconf/control_socket.h
new file mode 100644
index 0000000..a3741a6
--- /dev/null
+++ b/src/bin/netconf/control_socket.h
@@ -0,0 +1,131 @@
+// Copyright (C) 2018-2022 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file control_socket.h
+/// Contains declarations for control socket communication.
+
+#ifndef CONTROL_SOCKET_H
+#define CONTROL_SOCKET_H
+
+#include <netconf/netconf_config.h>
+#include <exceptions/exceptions.h>
+
+namespace isc {
+namespace netconf {
+
+/// @brief Exception thrown when the error during communication.
+class ControlSocketError : public isc::Exception {
+public:
+    ControlSocketError(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) { };
+};
+
+/// @brief Base class for control socket communication.
+///
+/// This class is the base class for control socket communication.
+/// Derived classes implement config-get, config-test and config-set
+/// using control sockets of different types. Those classes are used to
+/// communicate with other Kea daemons.
+class ControlSocketBase {
+public:
+
+    /// @brief Constructor.
+    ///
+    /// @param ctrl_sock The control socket configuration.
+    /// @throw ControlSocketError if ctrl_sock is null.
+    ControlSocketBase(CfgControlSocketPtr ctrl_sock) : socket_cfg_(ctrl_sock) {
+        if (!ctrl_sock) {
+            isc_throw(ControlSocketError, "ControlSocket constructor called "
+                      "with a null configuration");
+        }
+    }
+
+    /// @brief Destructor (does nothing).
+    virtual ~ControlSocketBase() {
+    }
+
+    /// @brief Getter which returns the socket type.
+    ///
+    /// @return returns the socket type as a CfgControlSocket::Type.
+    CfgControlSocket::Type getType() const {
+        return (socket_cfg_->getType());
+    }
+
+    /// @brief Returns the Unix socket name.
+    ///
+    /// @return returns the Unix socket name as a std::string.
+    const std::string getName() const {
+        return (socket_cfg_->getName());
+    }
+
+    /// @brief Returns the HTTP server URL.
+    ///
+    /// @return returns the HTTP server URL as an isc::http::Url.
+    const isc::http::Url getUrl() const {
+        return (socket_cfg_->getUrl());
+    }
+
+    /// @brief Get configuration.
+    ///
+    /// Call config-get over the control socket.
+    ///
+    /// @param service The target service (used by http).
+    /// @return The JSON element answer of config-get.
+    /// @throw ControlSocketError when a communication error occurs.
+    virtual data::ConstElementPtr configGet(const std::string& service) = 0;
+
+    /// @brief Test configuration.
+    ///
+    /// Call config-test over the control socket.
+    ///
+    /// @param config The configuration to test.
+    /// @param service The target service (used by http).
+    /// @return The JSON element answer of config-test.
+    /// @throw ControlSocketError when a communication error occurs.
+    virtual data::ConstElementPtr configTest(data::ConstElementPtr config,
+                                             const std::string& service) = 0;
+
+    /// @brief Set configuration.
+    ///
+    /// Call config-set over the control socket.
+    ///
+    /// @param config The configuration to set.
+    /// @param service The target service (used by http).
+    /// @return The JSON element answer of config-set.
+    /// @throw ControlSocketError when a communication error occurs.
+    virtual data::ConstElementPtr configSet(data::ConstElementPtr config,
+                                            const std::string& service) = 0;
+
+    /// @brief The control socket configuration.
+    CfgControlSocketPtr socket_cfg_;
+};
+
+/// @brief Type definition for the pointer to the @c ControlSocketBase.
+typedef boost::shared_ptr<ControlSocketBase> ControlSocketBasePtr;
+
+/// @brief Factory template for control sockets.
+///
+/// @tparam TYPE The control socket type.
+/// @param ctrl_sock The control socket configuration.
+/// @return A pointer to a control socket communication object.
+/// @throw NotImplemented if no specialization was called.
+template <CfgControlSocket::Type TYPE> ControlSocketBasePtr
+createControlSocket(CfgControlSocketPtr ctrl_sock) {
+    isc_throw(NotImplemented, "not specialized createControlSocket");
+}
+
+/// @brief Factory function for control sockets.
+///
+/// @param ctrl_sock The control socket configuration.
+/// @return A pointer to a control socket communication object.
+/// @throw BadValue if called with null or an unknown type.
+ControlSocketBasePtr
+controlSocketFactory(CfgControlSocketPtr ctrl_sock);
+
+} // namespace netconf
+} // namespace isc
+
+#endif // CONTROL_SOCKET_H
diff --git a/src/bin/netconf/http_control_socket.cc b/src/bin/netconf/http_control_socket.cc
new file mode 100644
index 0000000..ec1f9ae
--- /dev/null
+++ b/src/bin/netconf/http_control_socket.cc
@@ -0,0 +1,130 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file http_control_socket.cc
+/// Contains the HTTP socket derived class for control socket communication.
+
+#include <config.h>
+
+#include <netconf/http_control_socket.h>
+#include <cc/command_interpreter.h>
+#include <asiolink/asio_wrapper.h>
+#include <asiolink/io_service.h>
+#include <asiolink/tls_socket.h>
+#include <http/client.h>
+#include <http/post_request_json.h>
+#include <http/response_json.h>
+#include <config/timeouts.h>
+
+using namespace std;
+using namespace isc::asiolink;
+using namespace isc::config;
+using namespace isc::data;
+using namespace isc::http;
+
+namespace isc {
+namespace netconf {
+
+template <> ControlSocketBasePtr
+createControlSocket<CfgControlSocket::Type::HTTP>(CfgControlSocketPtr ctrl_sock) {
+    return (HttpControlSocketPtr(new HttpControlSocket(ctrl_sock)));
+}
+
+HttpControlSocket::HttpControlSocket(CfgControlSocketPtr ctrl_sock)
+    : ControlSocketBase(ctrl_sock) {
+}
+
+ConstElementPtr
+HttpControlSocket::configGet(const string& service) {
+    if (service == "ca") {
+        return (sendCommand(createCommand("config-get")));
+    } else {
+        return (sendCommand(createCommand("config-get", service)));
+    }
+}
+
+ConstElementPtr
+HttpControlSocket::configTest(ConstElementPtr config, const string& service) {
+    if (service == "ca") {
+        return (sendCommand(createCommand("config-test", config)));
+    } else {
+        return (sendCommand(createCommand("config-test", config, service)));
+    }
+}
+
+ConstElementPtr
+HttpControlSocket::configSet(ConstElementPtr config, const string& service) {
+    if (service == "ca") {
+        return (sendCommand(createCommand("config-set", config)));
+    } else {
+        return (sendCommand(createCommand("config-set", config, service)));
+    }
+}
+
+ConstElementPtr
+HttpControlSocket::sendCommand(ConstElementPtr command) {
+    PostHttpRequestJsonPtr request;
+    request.reset(new PostHttpRequestJson(HttpRequest::Method::HTTP_POST,
+                                          "/",
+                                          HttpVersion(1, 1)));
+    request->setBodyAsJson(command);
+    try {
+        request->finalize();
+    } catch (const std::exception& ex) {
+        isc_throw(ControlSocketError, "failed to create request: "
+                  << ex.what());
+    }
+
+    IOServicePtr io_service(new IOService());
+    HttpClient client(*io_service);
+    boost::system::error_code received_ec;
+    string receive_errmsg;
+    HttpResponseJsonPtr response(new HttpResponseJson());
+
+    client.asyncSendRequest(getUrl(), TlsContextPtr(), request, response,
+                [&io_service, &received_ec, &receive_errmsg]
+                (const boost::system::error_code& ec,
+                const HttpResponsePtr&, const string& errmsg) {
+                        // Capture error code and message.
+                        received_ec = ec;
+                        receive_errmsg = errmsg;
+                        // Got the IO service so stop IO service.
+                        // This causes to stop IO service when
+                        // all handlers have been invoked.
+                        io_service->stopWork();
+                },
+                HttpClient::RequestTimeout(TIMEOUT_AGENT_FORWARD_COMMAND));
+
+    // Perform this synchronously.
+    io_service->run();
+
+    if (received_ec) {
+        // Got an error code.
+        isc_throw(ControlSocketError, "communication error (code): "
+                  << received_ec.message());
+    }
+
+    if (!receive_errmsg.empty()) {
+        // Got an error message.
+        isc_throw(ControlSocketError, "communication error (message): "
+                  << receive_errmsg);
+    }
+
+    if (!response) {
+        // Failed to get the answer.
+        isc_throw(ControlSocketError, "empty response");
+    }
+
+    try {
+        return (response->getBodyAsJson());
+    } catch (const std::exception& ex) {
+        isc_throw(ControlSocketError, "unparsable response: " << ex.what());
+    }
+}
+
+} // namespace netconf
+} // namespace isc
+
diff --git a/src/bin/netconf/http_control_socket.h b/src/bin/netconf/http_control_socket.h
new file mode 100644
index 0000000..74c5761
--- /dev/null
+++ b/src/bin/netconf/http_control_socket.h
@@ -0,0 +1,89 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file http_control_socket.h
+/// Contains declarations for HTTP control socket communication.
+
+#ifndef HTTP_CONTROL_SOCKET_H
+#define HTTP_CONTROL_SOCKET_H
+
+#include <netconf/control_socket.h>
+
+namespace isc {
+namespace netconf {
+
+/// @brief Class for control socket communication over HTTP socket.
+///
+/// This class is the derived class for control socket communication
+/// over HTTP sockets.
+/// This class implements config-get, config-test and config-set.
+class HttpControlSocket : public ControlSocketBase {
+public:
+
+    /// @brief Constructor.
+    ///
+    /// @param ctrl_sock The control socket configuration.
+    HttpControlSocket(CfgControlSocketPtr ctrl_sock);
+
+    /// @brief Destructor (does nothing).
+    virtual ~HttpControlSocket() = default;
+
+    /// @brief Get configuration.
+    ///
+    /// Call config-get over the control socket.
+    ///
+    /// @param service The target service.
+    /// @return The JSON element answer of config-get.
+    /// @throw ControlSocketError when a communication error occurs.
+    virtual data::ConstElementPtr configGet(const std::string& service);
+
+    /// @brief Test configuration.
+    ///
+    /// Call config-test over the control socket.
+    ///
+    /// @param config The configuration to test.
+    /// @param service The target service.
+    /// @return The JSON element answer of config-test.
+    /// @throw ControlSocketError when a communication error occurs.
+    virtual data::ConstElementPtr configTest(data::ConstElementPtr config,
+                                             const std::string& service);
+
+    /// @brief Set configuration.
+    ///
+    /// Call config-set over the control socket.
+    ///
+    /// @param config The configuration to set.
+    /// @param service The target service.
+    /// @return The JSON element answer of config-set.
+    /// @throw ControlSocketError when a communication error occurs.
+    virtual data::ConstElementPtr configSet(data::ConstElementPtr config,
+                                            const std::string& service);
+
+private:
+    /// @brief Perform the actual communication.
+    ///
+    /// @todo Use persistent connections (vs. a new connection per call)
+    /// as the HTTP library supports them.
+    ///
+    /// @param command The command to send.
+    /// @return The answer.
+    data::ConstElementPtr sendCommand(data::ConstElementPtr command);
+};
+
+/// @brief Type definition for the pointer to the @c HttpControlSocket.
+typedef boost::shared_ptr<HttpControlSocket> HttpControlSocketPtr;
+
+/// @brief Factory template specialization for http control sockets.
+///
+/// @param ctrl_sock The control socket configuration.
+/// @return A pointer to a http control socket communication object.
+template <> ControlSocketBasePtr
+createControlSocket<CfgControlSocket::Type::HTTP>(CfgControlSocketPtr ctrl_sock);
+
+} // namespace netconf
+} // namespace isc
+
+#endif // HTTP_CONTROL_SOCKET_H
diff --git a/src/bin/netconf/location.hh b/src/bin/netconf/location.hh
new file mode 100644
index 0000000..842a111
--- /dev/null
+++ b/src/bin/netconf/location.hh
@@ -0,0 +1,306 @@
+// A Bison parser, made by GNU Bison 3.8.2.
+
+// Locations for Bison parsers in C++
+
+// Copyright (C) 2002-2015, 2018-2021 Free Software Foundation, Inc.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+// As a special exception, you may create a larger work that contains
+// part or all of the Bison parser skeleton and distribute that work
+// under terms of your choice, so long as that work isn't itself a
+// parser generator using the skeleton or a modified version thereof
+// as a parser skeleton.  Alternatively, if you modify or redistribute
+// the parser skeleton itself, you may (at your option) remove this
+// special exception, which will cause the skeleton and the resulting
+// Bison output files to be licensed under the GNU General Public
+// License without this special exception.
+
+// This special exception was added by the Free Software Foundation in
+// version 2.2 of Bison.
+
+/**
+ ** \file location.hh
+ ** Define the isc::netconf::location class.
+ */
+
+#ifndef YY_NETCONF_LOCATION_HH_INCLUDED
+# define YY_NETCONF_LOCATION_HH_INCLUDED
+
+# include <iostream>
+# include <string>
+
+# ifndef YY_NULLPTR
+#  if defined __cplusplus
+#   if 201103L <= __cplusplus
+#    define YY_NULLPTR nullptr
+#   else
+#    define YY_NULLPTR 0
+#   endif
+#  else
+#   define YY_NULLPTR ((void*)0)
+#  endif
+# endif
+
+#line 14 "netconf_parser.yy"
+namespace isc { namespace netconf {
+#line 59 "location.hh"
+
+  /// A point in a source file.
+  class position
+  {
+  public:
+    /// Type for file name.
+    typedef const std::string filename_type;
+    /// Type for line and column numbers.
+    typedef int counter_type;
+
+    /// Construct a position.
+    explicit position (filename_type* f = YY_NULLPTR,
+                       counter_type l = 1,
+                       counter_type c = 1)
+      : filename (f)
+      , line (l)
+      , column (c)
+    {}
+
+
+    /// Initialization.
+    void initialize (filename_type* fn = YY_NULLPTR,
+                     counter_type l = 1,
+                     counter_type c = 1)
+    {
+      filename = fn;
+      line = l;
+      column = c;
+    }
+
+    /** \name Line and Column related manipulators
+     ** \{ */
+    /// (line related) Advance to the COUNT next lines.
+    void lines (counter_type count = 1)
+    {
+      if (count)
+        {
+          column = 1;
+          line = add_ (line, count, 1);
+        }
+    }
+
+    /// (column related) Advance to the COUNT next columns.
+    void columns (counter_type count = 1)
+    {
+      column = add_ (column, count, 1);
+    }
+    /** \} */
+
+    /// File name to which this position refers.
+    filename_type* filename;
+    /// Current line number.
+    counter_type line;
+    /// Current column number.
+    counter_type column;
+
+  private:
+    /// Compute max (min, lhs+rhs).
+    static counter_type add_ (counter_type lhs, counter_type rhs, counter_type min)
+    {
+      return lhs + rhs < min ? min : lhs + rhs;
+    }
+  };
+
+  /// Add \a width columns, in place.
+  inline position&
+  operator+= (position& res, position::counter_type width)
+  {
+    res.columns (width);
+    return res;
+  }
+
+  /// Add \a width columns.
+  inline position
+  operator+ (position res, position::counter_type width)
+  {
+    return res += width;
+  }
+
+  /// Subtract \a width columns, in place.
+  inline position&
+  operator-= (position& res, position::counter_type width)
+  {
+    return res += -width;
+  }
+
+  /// Subtract \a width columns.
+  inline position
+  operator- (position res, position::counter_type width)
+  {
+    return res -= width;
+  }
+
+  /** \brief Intercept output stream redirection.
+   ** \param ostr the destination output stream
+   ** \param pos a reference to the position to redirect
+   */
+  template <typename YYChar>
+  std::basic_ostream<YYChar>&
+  operator<< (std::basic_ostream<YYChar>& ostr, const position& pos)
+  {
+    if (pos.filename)
+      ostr << *pos.filename << ':';
+    return ostr << pos.line << '.' << pos.column;
+  }
+
+  /// Two points in a source file.
+  class location
+  {
+  public:
+    /// Type for file name.
+    typedef position::filename_type filename_type;
+    /// Type for line and column numbers.
+    typedef position::counter_type counter_type;
+
+    /// Construct a location from \a b to \a e.
+    location (const position& b, const position& e)
+      : begin (b)
+      , end (e)
+    {}
+
+    /// Construct a 0-width location in \a p.
+    explicit location (const position& p = position ())
+      : begin (p)
+      , end (p)
+    {}
+
+    /// Construct a 0-width location in \a f, \a l, \a c.
+    explicit location (filename_type* f,
+                       counter_type l = 1,
+                       counter_type c = 1)
+      : begin (f, l, c)
+      , end (f, l, c)
+    {}
+
+
+    /// Initialization.
+    void initialize (filename_type* f = YY_NULLPTR,
+                     counter_type l = 1,
+                     counter_type c = 1)
+    {
+      begin.initialize (f, l, c);
+      end = begin;
+    }
+
+    /** \name Line and Column related manipulators
+     ** \{ */
+  public:
+    /// Reset initial location to final location.
+    void step ()
+    {
+      begin = end;
+    }
+
+    /// Extend the current location to the COUNT next columns.
+    void columns (counter_type count = 1)
+    {
+      end += count;
+    }
+
+    /// Extend the current location to the COUNT next lines.
+    void lines (counter_type count = 1)
+    {
+      end.lines (count);
+    }
+    /** \} */
+
+
+  public:
+    /// Beginning of the located region.
+    position begin;
+    /// End of the located region.
+    position end;
+  };
+
+  /// Join two locations, in place.
+  inline location&
+  operator+= (location& res, const location& end)
+  {
+    res.end = end.end;
+    return res;
+  }
+
+  /// Join two locations.
+  inline location
+  operator+ (location res, const location& end)
+  {
+    return res += end;
+  }
+
+  /// Add \a width columns to the end position, in place.
+  inline location&
+  operator+= (location& res, location::counter_type width)
+  {
+    res.columns (width);
+    return res;
+  }
+
+  /// Add \a width columns to the end position.
+  inline location
+  operator+ (location res, location::counter_type width)
+  {
+    return res += width;
+  }
+
+  /// Subtract \a width columns to the end position, in place.
+  inline location&
+  operator-= (location& res, location::counter_type width)
+  {
+    return res += -width;
+  }
+
+  /// Subtract \a width columns to the end position.
+  inline location
+  operator- (location res, location::counter_type width)
+  {
+    return res -= width;
+  }
+
+  /** \brief Intercept output stream redirection.
+   ** \param ostr the destination output stream
+   ** \param loc a reference to the location to redirect
+   **
+   ** Avoid duplicate information.
+   */
+  template <typename YYChar>
+  std::basic_ostream<YYChar>&
+  operator<< (std::basic_ostream<YYChar>& ostr, const location& loc)
+  {
+    location::counter_type end_col
+      = 0 < loc.end.column ? loc.end.column - 1 : 0;
+    ostr << loc.begin;
+    if (loc.end.filename
+        && (!loc.begin.filename
+            || *loc.begin.filename != *loc.end.filename))
+      ostr << '-' << loc.end.filename << ':' << loc.end.line << '.' << end_col;
+    else if (loc.begin.line < loc.end.line)
+      ostr << '-' << loc.end.line << '.' << end_col;
+    else if (loc.begin.column < end_col)
+      ostr << '-' << end_col;
+    return ostr;
+  }
+
+#line 14 "netconf_parser.yy"
+} } // isc::netconf
+#line 305 "location.hh"
+
+#endif // !YY_NETCONF_LOCATION_HH_INCLUDED
diff --git a/src/bin/netconf/main.cc b/src/bin/netconf/main.cc
new file mode 100644
index 0000000..3481b5b
--- /dev/null
+++ b/src/bin/netconf/main.cc
@@ -0,0 +1,49 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+#include <netconf/netconf_controller.h>
+#include <exceptions/exceptions.h>
+#include <cstdlib>
+#include <iostream>
+
+using namespace isc::netconf;
+using namespace isc::process;
+
+int main(int argc, char* argv[]) {
+    int ret = EXIT_SUCCESS;
+
+    // Launch the controller passing in command line arguments.
+    // Exit program with the controller's return code.
+    try {
+        // Instantiate/fetch the application controller singleton.
+        DControllerBasePtr& controller = NetconfController::instance();
+
+        // 'false' value disables test mode.
+        controller->launch(argc, argv, false);
+    } catch (const VersionMessage& ex) {
+        std::string msg(ex.what());
+        if (!msg.empty()) {
+            std::cout << msg << std::endl;
+        }
+    } catch (const InvalidUsage& ex) {
+        std::string msg(ex.what());
+        if (!msg.empty()) {
+            std::cerr << msg << std::endl;
+        }
+        ret = EXIT_FAILURE;
+    } catch (const std::exception& ex) {
+        std::cerr << "Service failed: " << ex.what() << std::endl;
+        ret = EXIT_FAILURE;
+    } catch (...) {
+        std::cerr << "Service failed" << std::endl;
+        ret = EXIT_FAILURE;
+    }
+
+    NetconfController::instance().reset();
+
+    return (ret);
+}
diff --git a/src/bin/netconf/netconf.cc b/src/bin/netconf/netconf.cc
new file mode 100644
index 0000000..42b6d3e
--- /dev/null
+++ b/src/bin/netconf/netconf.cc
@@ -0,0 +1,797 @@
+// Copyright (C) 2018-2022 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file netconf.cc
+/// Contains the Netconf agent methods.
+
+#include <config.h>
+
+#include <netconf/netconf.h>
+#include <netconf/netconf_controller.h>
+#include <netconf/netconf_log.h>
+#include <cc/command_interpreter.h>
+#include <yang/translator_config.h>
+#include <yang/yang_revisions.h>
+
+#include <boost/algorithm/string.hpp>
+
+#include <sstream>
+
+using namespace std;
+using namespace isc::config;
+using namespace isc::data;
+using namespace isc::netconf;
+using namespace isc::yang;
+using namespace sysrepo;
+
+using libyang::S_Context;
+using libyang::S_Module;
+
+namespace {
+
+/// @brief Module change subscription callback.
+class NetconfAgentCallback {
+public:
+    /// @brief Constructor.
+    ///
+    /// @param service_pair The service name and configuration pair.
+    NetconfAgentCallback(const CfgServersMapPair& service_pair)
+        : service_pair_(service_pair) {
+    }
+
+    /// @brief Server name and configuration pair.
+    CfgServersMapPair const service_pair_;
+
+    /// @brief Module configuration change callback.
+    ///
+    /// This callback is called by sysrepo when there is a change to
+    /// module configuration.
+    ///
+    /// @param sess The running datastore session.
+    /// @param module_name The module name.
+    /// @param event The event.
+    /// @param private_ctx The private context.
+    /// @return the sysrepo return code.
+    sr_error_t module_change(S_Session sess,
+                             const char* module_name,
+                             const char* /* xpath */,
+                             sr_event_t event,
+                             void* /* private_ctx */) {
+        ostringstream event_type;
+        switch (event) {
+        case SR_EV_UPDATE:
+            // This could potentially be a hook point for mid-flight
+            // configuration changes.
+            event_type << "SR_EV_UPDATE";
+            break;
+        case SR_EV_CHANGE:
+            event_type << "SR_EV_CHANGE";
+            break;
+        case SR_EV_DONE:
+            event_type << "SR_EV_DONE";
+            break;
+        case SR_EV_ABORT:
+            event_type << "SR_EV_ABORT";
+            break;
+        case SR_EV_ENABLED:
+            event_type << "SR_EV_ENABLED";
+            break;
+        case SR_EV_RPC:
+            event_type << "SR_EV_RPC";
+            break;
+        default:
+            event_type << "UNKNOWN (" << event << ")";
+            break;
+        }
+        LOG_INFO(netconf_logger, NETCONF_CONFIG_CHANGE_EVENT)
+            .arg(event_type.str());
+        NetconfAgent::logChanges(sess, module_name);
+        switch (event) {
+        case SR_EV_CHANGE:
+            return (NetconfAgent::change(sess, service_pair_));
+        case SR_EV_DONE:
+            return (NetconfAgent::done(sess, service_pair_));
+        default:
+            return (SR_ERR_OK);
+        }
+    }
+
+    void event_notif(sysrepo::S_Session /* session */,
+                     sr_ev_notif_type_t const notification_type,
+                     char const* /* path */,
+                     sysrepo::S_Vals const vals,
+                     time_t /* timestamp */,
+                     void* /* private_data */) {
+        string n;
+        switch (notification_type) {
+        case SR_EV_NOTIF_REALTIME:
+            n = "SR_EV_NOTIF_REALTIME";
+            break;
+        case SR_EV_NOTIF_REPLAY:
+            n = "SR_EV_NOTIF_REPLAY";
+            break;
+        case SR_EV_NOTIF_REPLAY_COMPLETE:
+            n = "SR_EV_NOTIF_REPLAY_COMPLETE";
+            break;
+        case SR_EV_NOTIF_STOP:
+            n = "SR_EV_NOTIF_STOP";
+            break;
+        case SR_EV_NOTIF_SUSPENDED:
+            n = "SR_EV_NOTIF_SUSPENDED";
+            break;
+        case SR_EV_NOTIF_RESUMED:
+            n = "SR_EV_NOTIF_RESUMED";
+            break;
+        }
+
+        stringstream s;
+        for (size_t i(0); i < vals->val_cnt(); ++i) {
+            if (i != 0) {
+                s << ", ";
+            }
+            s << vals->val(i)->to_string();
+        }
+
+        LOG_INFO(netconf_logger, NETCONF_NOTIFICATION_RECEIVED)
+            .arg(n)
+            .arg(service_pair_.first)
+            .arg(s.str());
+    }
+};
+
+} // end of anonymous namespace
+
+namespace isc {
+namespace netconf {
+
+NetconfAgent::~NetconfAgent() {
+    clear();
+}
+
+void
+NetconfAgent::init(NetconfCfgMgrPtr cfg_mgr) {
+    // Check for a configuration manager.
+    if (!cfg_mgr) {
+        isc_throw(Unexpected, "missing configuration manager");
+        return;
+    }
+
+    // Retrieve configuration from existing running DHCP daemons.
+    const CfgServersMapPtr& servers =
+        cfg_mgr->getNetconfConfig()->getCfgServersMap();
+    for (auto const& pair : *servers) {
+        keaConfig(pair);
+    }
+
+    // Initialize sysrepo.
+    initSysrepo();
+
+    // Check modules / revisions.
+    checkModules(servers);
+
+    for (auto const& pair : *servers) {
+        yangConfig(pair);
+        subscribeConfig(pair);
+        subscribeToNotifications(pair);
+    }
+}
+
+void
+NetconfAgent::clear() {
+    for (auto subs : subscriptions_) {
+        subs.second.reset();
+    }
+    subscriptions_.clear();
+    running_sess_.reset();
+    startup_sess_.reset();
+    conn_.reset();
+}
+
+void
+NetconfAgent::keaConfig(const CfgServersMapPair& service_pair) {
+    // If the boot-update flag is not set.
+    if (!service_pair.second->getBootUpdate()) {
+        return;
+    }
+    CfgControlSocketPtr ctrl_sock = service_pair.second->getCfgControlSocket();
+    if (!ctrl_sock) {
+        return;
+    }
+    ControlSocketBasePtr comm;
+    try {
+        comm = controlSocketFactory(ctrl_sock);
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "createControlSocket failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_GET_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return;
+    }
+    ConstElementPtr answer;
+    int rcode;
+    ConstElementPtr config;
+    LOG_INFO(netconf_logger, NETCONF_GET_CONFIG_STARTED)
+        .arg(service_pair.first);
+    try {
+        answer = comm->configGet(service_pair.first);
+        config = parseAnswer(rcode, answer);
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "config-get command failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_GET_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return;
+    }
+    if (rcode != CONTROL_RESULT_SUCCESS) {
+        ostringstream msg;
+        msg << "config-get command returned " << answerToText(answer);
+        LOG_ERROR(netconf_logger, NETCONF_GET_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return;
+    }
+    if (!config) {
+        LOG_ERROR(netconf_logger, NETCONF_GET_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg("config-get command returned an empty configuration");
+        return;
+    }
+    LOG_DEBUG(netconf_logger, NETCONF_DBG_TRACE_DETAIL_DATA,
+              NETCONF_GET_CONFIG)
+        .arg(service_pair.first)
+        .arg(prettyPrint(config));
+}
+
+void
+NetconfAgent::initSysrepo() {
+    try {
+        conn_ = make_shared<Connection>();
+    } catch (const std::exception& ex) {
+        isc_throw(Unexpected, "Can't connect to sysrepo: " << ex.what());
+    }
+
+    try {
+        startup_sess_.reset(new Session(conn_, SR_DS_STARTUP));
+        running_sess_.reset(new Session(conn_, SR_DS_RUNNING));
+    } catch (const std::exception& ex) {
+        isc_throw(Unexpected, "Can't establish a sysrepo session: "
+                  << ex.what());
+    }
+
+    // Retrieve names and revisions of installed modules from sysrepo.
+    getModules();
+}
+
+void NetconfAgent::getModules() {
+    vector<S_Module> modules;
+    try {
+        S_Context context(running_sess_->get_context());
+        modules = context->get_module_iter();
+    } catch (const sysrepo_exception& ex) {
+        isc_throw(Unexpected, "can't retrieve available modules: " << ex.what());
+    }
+
+    for (S_Module const& module : modules) {
+        if (!module->name()) {
+            isc_throw(Unexpected, "could not retrieve module name");
+        }
+        string const name(module->name());
+        if (!module->rev() || !module->rev()->date()) {
+            isc_throw(Unexpected,
+                      "could not retrieve module revision for module " << name);
+        }
+        string const revision(module->rev()->date());
+        modules_.emplace(name, revision);
+    }
+}
+
+bool
+NetconfAgent::checkModule(const string& module_name) const {
+    auto module = modules_.find(module_name);
+    if (module == modules_.end()) {
+        LOG_ERROR(netconf_logger, NETCONF_MODULE_MISSING_ERR)
+            .arg(module_name);
+        return (false);
+    }
+    auto modrev = YANG_REVISIONS.find(module_name);
+    if (modrev == YANG_REVISIONS.end()) {
+        // Can't check revision?!
+        // It can happen only with a module which is not in
+        // YANG_REVISIONS but installed so likely on purpose.
+        return (true);
+    }
+    if (modrev->second != module->second) {
+        LOG_ERROR(netconf_logger, NETCONF_MODULE_REVISION_ERR)
+            .arg(module_name)
+            .arg(modrev->second)
+            .arg(module->second);
+        return (false);
+    }
+    return (true);
+}
+
+void
+NetconfAgent::checkModules(CfgServersMapPtr const& servers /* = {} */) const {
+    bool faulty_model(false);
+    if (servers) {
+        for (auto pair : *servers) {
+            if (!checkModule(pair.second->getModel())) {
+                faulty_model = true;
+            }
+        }
+    }
+
+    if (faulty_model) {
+        isc_throw(Unexpected, "YANG module is missing or its revision is not "
+                              "supported. Check logs for details.");
+    }
+
+    for (auto modrev : YANG_REVISIONS) {
+        auto module = modules_.find(modrev.first);
+        if (module == modules_.end()) {
+            LOG_WARN(netconf_logger, NETCONF_MODULE_MISSING_WARN)
+                .arg(modrev.first);
+            continue;
+        }
+        if (modrev.second != module->second) {
+            LOG_WARN(netconf_logger, NETCONF_MODULE_REVISION_WARN)
+                .arg(modrev.first)
+                .arg(modrev.second)
+                .arg(module->second);
+        }
+    }
+}
+
+void
+NetconfAgent::yangConfig(const CfgServersMapPair& service_pair) {
+    // If we're shutting down, or the boot-update flag is not set or the model
+    // associated with it is not specified.
+    if (!service_pair.second->getBootUpdate() ||
+        service_pair.second->getModel().empty()) {
+        return;
+    }
+
+    // First we need a way to reach the actual servers.
+    CfgControlSocketPtr ctrl_sock = service_pair.second->getCfgControlSocket();
+    if (!ctrl_sock) {
+        return;
+    }
+
+    LOG_INFO(netconf_logger, NETCONF_SET_CONFIG_STARTED)
+        .arg(service_pair.first);
+    ConstElementPtr config;
+    try {
+        // Retrieve configuration from Sysrepo.
+        TranslatorConfig tc(startup_sess_, service_pair.second->getModel());
+        config = tc.getConfig();
+        if (!config) {
+            ostringstream msg;
+            msg << "YANG configuration for "
+                << service_pair.second->getModel()
+                << " is empty";
+            LOG_ERROR(netconf_logger, NETCONF_SET_CONFIG_FAILED)
+                .arg(service_pair.first)
+                .arg(msg.str());
+            return;
+        } else {
+            LOG_DEBUG(netconf_logger, NETCONF_DBG_TRACE_DETAIL_DATA,
+                      NETCONF_SET_CONFIG)
+                .arg(service_pair.first)
+                .arg(prettyPrint(config));
+        }
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "get YANG configuration for " << service_pair.first
+            << " failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_SET_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return;
+    }
+    ControlSocketBasePtr comm;
+    try {
+        comm = controlSocketFactory(ctrl_sock);
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "control socket creation failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_SET_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return;
+    }
+    ConstElementPtr answer;
+    int rcode;
+    try {
+        answer = comm->configSet(config, service_pair.first);
+        parseAnswer(rcode, answer);
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "config-set command failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_SET_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return;
+    }
+    if (rcode != CONTROL_RESULT_SUCCESS) {
+        ostringstream msg;
+        msg << "config-set command returned " << answerToText(answer);
+        LOG_ERROR(netconf_logger, NETCONF_SET_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return;
+    }
+    LOG_INFO(netconf_logger, NETCONF_BOOT_UPDATE_COMPLETED)
+        .arg(service_pair.first);
+}
+
+void
+NetconfAgent::subscribeConfig(const CfgServersMapPair& service_pair) {
+    std::string const& model(service_pair.second->getModel());
+
+    // If we're shutting down, or the subscribe-changes flag is not set or
+    // the model associated with it is not specified.
+    if (!service_pair.second->getSubscribeChanges() ||
+        model.empty()) {
+        return;
+    }
+    LOG_INFO(netconf_logger, NETCONF_SUBSCRIBE_CONFIG)
+        .arg(service_pair.first)
+        .arg(model);
+    S_Subscribe subs(new Subscribe(running_sess_));
+    auto callback = [=](sysrepo::S_Session sess, const char* module_name,
+                        const char* xpath, sr_event_t event,
+                        uint32_t /* request_id */) {
+        NetconfAgentCallback agent(service_pair);
+        return agent.module_change(sess, module_name, xpath, event, nullptr);
+    };
+    try {
+        sr_subscr_options_t options = SR_SUBSCR_DEFAULT;
+        if (!service_pair.second->getValidateChanges()) {
+            options |= SR_SUBSCR_DONE_ONLY;
+        }
+        // Note the API stores the module name so do not put it
+        // in a short lifetime variable!
+        subs->module_change_subscribe(model.c_str(), callback, nullptr, 0,
+                                      options);
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "module change subscribe failed with " << ex.what();
+        msg << "change subscription for model " << model <<
+            " failed with: " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_SUBSCRIBE_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(service_pair.second->getModel())
+            .arg(msg.str());
+        return;
+    }
+    subscriptions_.insert(make_pair(service_pair.first, subs));
+}
+
+
+void
+NetconfAgent::subscribeToNotifications(const CfgServersMapPair& service_pair) {
+    std::string const& model(service_pair.second->getModel());
+    // If we're shutting down, or the subscribe-changes flag is not set or
+    // the model associated with it is not specified.
+    if (!service_pair.second->getSubscribeNotifications() ||
+        model.empty()) {
+        return;
+    }
+    LOG_INFO(netconf_logger, NETCONF_SUBSCRIBE_NOTIFICATIONS)
+        .arg(service_pair.first)
+        .arg(model);
+
+    S_Subscribe subscription(std::make_shared<Subscribe>(running_sess_));
+    auto callback = [=](sysrepo::S_Session session,
+                        sr_ev_notif_type_t const notification_type,
+                        char const* path,
+                        sysrepo::S_Vals const vals,
+                        time_t timestamp) {
+        NetconfAgentCallback agent(service_pair);
+        return agent.event_notif(session, notification_type, path, vals, timestamp, nullptr);
+    };
+    try {
+        subscription->event_notif_subscribe(model.c_str(), callback);
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "event notification subscription for model " << model <<
+            " failed with: " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_SUBSCRIBE_NOTIFICATIONS_FAILED)
+            .arg(service_pair.first)
+            .arg(service_pair.second->getModel())
+            .arg(msg.str());
+        return;
+    }
+    subscriptions_.emplace(service_pair.first, subscription);
+}
+
+sr_error_t
+NetconfAgent::change(S_Session sess, const CfgServersMapPair& service_pair) {
+    // If we're shutting down, or the subscribe-changes or the
+    // validate-changes flag is not set or the model associated with
+    // it is not specified.
+    if (!service_pair.second->getSubscribeChanges() ||
+        !service_pair.second->getValidateChanges() ||
+        service_pair.second->getModel().empty()) {
+        return (SR_ERR_OK);
+    }
+    CfgControlSocketPtr ctrl_sock = service_pair.second->getCfgControlSocket();
+    if (!ctrl_sock) {
+        return (SR_ERR_OK);
+    }
+    LOG_INFO(netconf_logger, NETCONF_VALIDATE_CONFIG_STARTED)
+        .arg(service_pair.first);
+    ConstElementPtr config;
+    try {
+        TranslatorConfig tc(sess, service_pair.second->getModel());
+        config = tc.getConfig();
+        if (!config) {
+            ostringstream msg;
+            msg << "YANG configuration for "
+                << service_pair.second->getModel()
+                << " is empty";
+            LOG_ERROR(netconf_logger, NETCONF_VALIDATE_CONFIG_FAILED)
+                .arg(service_pair.first)
+                .arg(msg.str());
+            return (SR_ERR_OPERATION_FAILED);
+        } else {
+            LOG_DEBUG(netconf_logger, NETCONF_DBG_TRACE_DETAIL_DATA,
+                      NETCONF_VALIDATE_CONFIG)
+                .arg(service_pair.first)
+                .arg(prettyPrint(config));
+        }
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "get YANG configuration for " << service_pair.first
+            << " failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_VALIDATE_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return (SR_ERR_VALIDATION_FAILED);;
+    }
+    ControlSocketBasePtr comm;
+    try {
+        comm = controlSocketFactory(ctrl_sock);
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "createControlSocket failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_VALIDATE_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return (SR_ERR_OK);
+    }
+    ConstElementPtr answer;
+    int rcode;
+    try {
+        answer = comm->configTest(config, service_pair.first);
+        parseAnswer(rcode, answer);
+    } catch (const std::exception& ex) {
+        stringstream msg;
+        msg << "configTest failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_VALIDATE_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return (SR_ERR_VALIDATION_FAILED);
+    }
+    if (rcode != CONTROL_RESULT_SUCCESS) {
+        stringstream msg;
+        msg << "configTest returned " << answerToText(answer);
+        LOG_ERROR(netconf_logger, NETCONF_VALIDATE_CONFIG_REJECTED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return (SR_ERR_VALIDATION_FAILED);
+    }
+    LOG_INFO(netconf_logger, NETCONF_VALIDATE_CONFIG_COMPLETED)
+        .arg(service_pair.first);
+    return (SR_ERR_OK);
+}
+
+sr_error_t
+NetconfAgent::done(S_Session sess, const CfgServersMapPair& service_pair) {
+    // Check if we should and can process this update.
+    if (!service_pair.second->getSubscribeChanges() ||
+        service_pair.second->getModel().empty()) {
+        return (SR_ERR_OK);
+    }
+    CfgControlSocketPtr ctrl_sock = service_pair.second->getCfgControlSocket();
+    if (!ctrl_sock) {
+        return (SR_ERR_OK);
+    }
+
+    // All looks good, let's get started. Print an info that we're about
+    // to update the configuration.
+    LOG_INFO(netconf_logger, NETCONF_UPDATE_CONFIG_STARTED)
+        .arg(service_pair.first);
+
+    // Retrieve the configuration from SYSREPO first.
+    ConstElementPtr config;
+    try {
+        TranslatorConfig tc(sess, service_pair.second->getModel());
+        config = tc.getConfig();
+        if (!config) {
+            ostringstream msg;
+            msg << "YANG configuration for "
+                << service_pair.second->getModel()
+                << " is empty";
+            LOG_ERROR(netconf_logger, NETCONF_UPDATE_CONFIG_FAILED)
+                .arg(service_pair.first)
+                .arg(msg.str());
+            return (SR_ERR_VALIDATION_FAILED);
+        } else {
+            LOG_DEBUG(netconf_logger, NETCONF_DBG_TRACE_DETAIL_DATA,
+                      NETCONF_UPDATE_CONFIG)
+                .arg(service_pair.first)
+                .arg(prettyPrint(config));
+        }
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "get YANG configuration for " << service_pair.first
+            << " failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_UPDATE_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return (SR_ERR_VALIDATION_FAILED);
+    }
+
+    // Ok, now open the control socket. We need this to send the config to
+    // the server.
+    ControlSocketBasePtr comm;
+    try {
+        comm = controlSocketFactory(ctrl_sock);
+    } catch (const std::exception& ex) {
+        ostringstream msg;
+        msg << "createControlSocket failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_UPDATE_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return (SR_ERR_OK);
+    }
+
+    // Now apply the config using config-set command.
+    ConstElementPtr answer;
+    int rcode;
+    try {
+        answer = comm->configSet(config, service_pair.first);
+        parseAnswer(rcode, answer);
+    } catch (const std::exception& ex) {
+        stringstream msg;
+        msg << "configSet failed with " << ex.what();
+        LOG_ERROR(netconf_logger, NETCONF_UPDATE_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return (SR_ERR_VALIDATION_FAILED);
+    }
+
+    // rcode == CONTROL_RESULT_SUCCESS, unless the docs say otherwise :).
+    if (rcode != CONTROL_RESULT_SUCCESS) {
+        stringstream msg;
+        msg << "configSet returned " << answerToText(answer);
+        LOG_ERROR(netconf_logger, NETCONF_UPDATE_CONFIG_FAILED)
+            .arg(service_pair.first)
+            .arg(msg.str());
+        return (SR_ERR_VALIDATION_FAILED);
+    }
+    LOG_INFO(netconf_logger, NETCONF_UPDATE_CONFIG_COMPLETED)
+        .arg(service_pair.first);
+    return (SR_ERR_OK);
+}
+
+void
+NetconfAgent::logChanges(S_Session sess, const string& model) {
+    ostringstream stream;
+    stream << "/" << model << ":*//.";
+    std::string const xpath(stream.str());
+    S_Iter_Change iter = sess->get_changes_iter(xpath.c_str());
+    if (!iter) {
+        LOG_WARN(netconf_logger, NETCONF_LOG_CHANGE_FAIL)
+            .arg("no iterator");
+        return;
+    }
+    for (;;) {
+        S_Change change;
+        ostringstream msg;
+        try {
+            change = sess->get_change_next(iter);
+        } catch (const sysrepo_exception& ex) {
+            msg << "get change iterator next failed: " << ex.what();
+            LOG_WARN(netconf_logger, NETCONF_LOG_CHANGE_FAIL)
+                .arg(msg.str());
+            return;
+        }
+        if (!change) {
+            // End of changes, not an error.
+            return;
+        }
+        S_Val new_val = change->new_val();
+        S_Val old_val = change->old_val();
+        string report;
+        switch (change->oper()) {
+        case SR_OP_CREATED:
+            if (!new_val) {
+                LOG_WARN(netconf_logger, NETCONF_LOG_CHANGE_FAIL)
+                    .arg("created but without a new value");
+                break;
+            }
+            msg << "created: " << new_val->to_string();
+            report = msg.str();
+            boost::erase_all(report, "\n");
+            LOG_DEBUG(netconf_logger, NETCONF_DBG_TRACE_DETAIL_DATA,
+                      NETCONF_CONFIG_CHANGED_DETAIL)
+                .arg(report);
+            break;
+        case SR_OP_MODIFIED:
+            if (!old_val || !new_val) {
+                LOG_WARN(netconf_logger, NETCONF_LOG_CHANGE_FAIL)
+                    .arg("modified but without an old or new value");
+                break;
+            }
+            msg << "modified: " << old_val->to_string()
+                << " => " << new_val->to_string();
+            report = msg.str();
+            boost::erase_all(report, "\n");
+            LOG_DEBUG(netconf_logger, NETCONF_DBG_TRACE_DETAIL_DATA,
+                      NETCONF_CONFIG_CHANGED_DETAIL)
+                .arg(report);
+            break;
+        case SR_OP_DELETED:
+            if (!old_val) {
+                LOG_WARN(netconf_logger, NETCONF_LOG_CHANGE_FAIL)
+                    .arg("deleted but without an old value");
+                break;
+            }
+            msg << "deleted: " << old_val->to_string();
+            report = msg.str();
+            boost::erase_all(report, "\n");
+            LOG_DEBUG(netconf_logger, NETCONF_DBG_TRACE_DETAIL_DATA,
+                      NETCONF_CONFIG_CHANGED_DETAIL)
+                .arg(report);
+            break;
+        case SR_OP_MOVED:
+            if (!new_val) {
+                LOG_WARN(netconf_logger, NETCONF_LOG_CHANGE_FAIL)
+                    .arg("moved but without a new value");
+                break;
+            }
+            msg << "moved: " << new_val->xpath();
+            if (!old_val) {
+                msg << " first";
+            } else {
+                msg << " after " << old_val->xpath();
+            }
+            report = msg.str();
+            boost::erase_all(report, "\n");
+            LOG_DEBUG(netconf_logger, NETCONF_DBG_TRACE_DETAIL_DATA,
+                      NETCONF_CONFIG_CHANGED_DETAIL)
+                .arg(report);
+            break;
+        default:
+            msg << "unknown operation (" << change->oper() << ")";
+            LOG_WARN(netconf_logger, NETCONF_LOG_CHANGE_FAIL)
+                .arg(msg.str());
+        }
+    }
+}
+
+void
+NetconfAgent::announceShutdown() const {
+    isc::process::DControllerBasePtr& controller(NetconfController::instance());
+    if (controller) {
+        boost::dynamic_pointer_cast<NetconfController>(controller)
+            ->getNetconfProcess()
+            ->setShutdownFlag(true);
+    }
+}
+
+bool NetconfAgent::shouldShutdown() const {
+    return boost::dynamic_pointer_cast<NetconfController>(NetconfController::instance())
+        ->getNetconfProcess()
+        ->shouldShutdown();
+}
+
+} // namespace netconf
+} // namespace isc
diff --git a/src/bin/netconf/netconf.h b/src/bin/netconf/netconf.h
new file mode 100644
index 0000000..8162116
--- /dev/null
+++ b/src/bin/netconf/netconf.h
@@ -0,0 +1,183 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file netconf.h
+
+#ifndef NETCONF_H
+#define NETCONF_H
+
+#include <netconf/netconf_cfg_mgr.h>
+#include <netconf/control_socket.h>
+#include <netconf/http_control_socket.h>
+#include <netconf/stdout_control_socket.h>
+#include <netconf/unix_control_socket.h>
+
+#include <sysrepo-cpp/Session.hpp>
+
+#include <map>
+
+namespace isc {
+namespace netconf {
+
+/// @brief Forward declaration to the @c NetconfAgent.
+class NetconfAgent;
+
+/// @brief Type definition for the pointer to the @c NetconfAgent.
+typedef boost::shared_ptr<NetconfAgent> NetconfAgentPtr;
+
+/// @brief Netconf agent.
+///
+/// Service performed by the Netconf agent:
+///  - at boot get and display Kea server configurations.
+///  - load Kea server configurations from YANG datastore.
+///  - validate YANG datastore changes using Kea configuration test.
+///  - load updated Kea server configurations from YANG datastore.
+///  - on shutdown close subscriptions.
+class NetconfAgent {
+public:
+    /// @brief Destructor (call clear).
+    virtual ~NetconfAgent();
+
+    /// @brief Initialize sysrepo sessions.
+    ///
+    /// Must be called before init. Collect the list of available
+    /// modules with their revisions.
+    void initSysrepo();
+
+    /// @brief Initialization.
+    ///
+    /// Check available modules / revisions.
+    /// Get and display Kea server configurations.
+    /// Load Kea server configurations from YANG datastore.
+    /// Subscribe configuration changes in YANG datastore.
+    ///
+    /// @param cfg_mgr The configuration manager (can be null).
+    void init(NetconfCfgMgrPtr cfg_mgr);
+
+    /// @brief Clear.
+    ///
+    /// Close subscriptions and sysrepo.
+    void clear();
+
+    /// @brief SR_EV_CHANGE callback.
+    ///
+    /// Validate YANG datastore changes using Kea configuration test.
+    ///
+    /// @param sess The sysrepo running datastore session.
+    /// @param service_pair The service name and configuration pair.
+    /// @return return code for sysrepo.
+    static sr_error_t
+    change(sysrepo::S_Session sess, const CfgServersMapPair& service_pair);
+
+    /// @brief SR_EV_DONE callback.
+    ///
+    /// Get notified that a Kea configuration has been written to the YANG
+    /// datastore.
+    ///
+    /// @param sess The sysrepo running datastore session.
+    /// @param service_pair The service name and configuration pair.
+    /// @return return code for sysrepo.
+    static sr_error_t
+    done(sysrepo::S_Session sess, const CfgServersMapPair& service_pair);
+
+    /// @brief Log changes.
+    ///
+    /// Iterate on changes logging them. Sysrepo changes are an operation
+    /// (created, modified, deleted or moved) with old and new values
+    /// (cf sr_change_oper_e sysrepo documentation).
+    ///
+    /// @param sess The sysrepo running datastore session.
+    /// @param model The model name.
+    static void logChanges(sysrepo::S_Session sess, const std::string& model);
+
+protected:
+    /// @brief Get and display Kea server configuration.
+    ///
+    /// Retrieves current configuration via control socket (unix or http)
+    /// from a running Kea server. If boot-update is set to false, this
+    /// operation is a no-op.
+    ///
+    /// @param service_pair The service name and configuration pair.
+    void keaConfig(const CfgServersMapPair& service_pair);
+
+    /// @brief Check essential module availability.
+    ///
+    /// Emit a fatal error if an essential one (i.e. required in
+    /// a further phase) is missing or does not have the expected revision.
+    ///
+    /// @param module_name The module name.
+    /// @return true if available, false if not.
+    bool checkModule(const std::string& module_name) const;
+
+    /// @brief Retrieve names and revisions of installed modules through the
+    /// sysrepo API.
+    ///
+    /// @throw Unexpected if module information cannot be retrieved from sysrepo
+    void getModules();
+
+    /// @brief Check module availability.
+    ///
+    /// Emit a warning if a module is missing or does not have
+    /// the expected revision.
+    ///
+    /// @param servers the configured servers to check against YANG_REVISIONS.
+    /// Is empty by default for when the caller only wants to check
+    /// installed modules.
+    ///
+    /// @throw Unexpected if a module from YANG_REVISIONS is not installed or
+    /// has the wrong revision.
+    void checkModules(CfgServersMapPtr const& servers = {}) const;
+
+    /// @brief Retrieve Kea server configuration from the YANG startup
+    ///        datastore and applies it to servers.
+    ///
+    /// This method retrieves the configuation from sysrepo first, then
+    /// established control socket connection to Kea servers (currently
+    /// dhcp4 and/or dhcp6) and then attempts to send configuration
+    /// using config-set.
+    ///
+    /// If boot-update is set to false, this operation is a no-op.
+    ///
+    /// @param service_pair The service name and configuration pair.
+    void yangConfig(const CfgServersMapPair& service_pair);
+
+    /// @brief Subscribe changes for a module in YANG datastore.
+    ///
+    /// @param service_pair The service name and configuration pair.
+    void subscribeConfig(const CfgServersMapPair& service_pair);
+
+    /// @brief Subscribe to notifications for a given YANG module.
+    ///
+    /// @param service_pair the service name and configuration pair
+    void subscribeToNotifications(const CfgServersMapPair& service_pair);
+
+    /// @brief Set the shutdown flag of the process to true so that it can exit
+    /// at the earliest convenient time.
+    void announceShutdown() const;
+
+    /// @brief Check the shutdown flag of the process.
+    bool shouldShutdown() const;
+
+    /// @brief Sysrepo connection.
+    sysrepo::S_Connection conn_;
+
+    /// @brief Sysrepo startup datastore session.
+    sysrepo::S_Session startup_sess_;
+
+    /// @brief Sysrepo running datastore session.
+    sysrepo::S_Session running_sess_;
+
+    /// @brief Available modules and revisions in Sysrepo.
+    std::map<const std::string, const std::string> modules_;
+
+    /// @brief Subscription map.
+    std::map<const std::string, sysrepo::S_Subscribe> subscriptions_;
+};
+
+} // namespace netconf
+} // namespace isc
+
+#endif // NETCONF_H
diff --git a/src/bin/netconf/netconf_cfg_mgr.cc b/src/bin/netconf/netconf_cfg_mgr.cc
new file mode 100644
index 0000000..82a19f2
--- /dev/null
+++ b/src/bin/netconf/netconf_cfg_mgr.cc
@@ -0,0 +1,173 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+#include <netconf/netconf_cfg_mgr.h>
+#include <netconf/netconf_log.h>
+#include <netconf/simple_parser.h>
+#include <cc/simple_parser.h>
+#include <cc/command_interpreter.h>
+#include <exceptions/exceptions.h>
+
+using namespace isc::config;
+using namespace isc::dhcp;
+using namespace isc::process;
+using namespace isc::data;
+
+namespace isc {
+namespace netconf {
+
+NetconfConfig::NetconfConfig()
+    : configured_globals_(Element::createMap()),
+      servers_map_(new CfgServersMap()) {
+}
+
+NetconfConfig::NetconfConfig(const NetconfConfig& orig)
+    : ConfigBase(), configured_globals_(orig.configured_globals_),
+      servers_map_(orig.servers_map_), hooks_config_(orig.hooks_config_) {
+}
+
+void
+NetconfConfig::extractConfiguredGlobals(ConstElementPtr config) {
+    if (config->getType() != Element::map) {
+        isc_throw(BadValue,
+                  "extractConfiguredGlobals must be given a map element");
+    }
+
+    const std::map<std::string, ConstElementPtr>& values = config->mapValue();
+    for (auto value = values.begin(); value != values.end(); ++value) {
+        if (value->second->getType() != Element::list &&
+            value->second->getType() != Element::map) {
+            addConfiguredGlobal(value->first, value->second);
+        }
+    }
+}
+
+NetconfCfgMgr::NetconfCfgMgr()
+    : DCfgMgrBase(ConfigPtr(new NetconfConfig())) {
+}
+
+std::string
+NetconfCfgMgr::getConfigSummary(const uint32_t /*selection*/) {
+
+    NetconfConfigPtr ctx = getNetconfConfig();
+
+    // No globals to print.
+    std::ostringstream s;
+
+    // Then print managed servers.
+    for (auto serv : *ctx->getCfgServersMap()) {
+        if (s.tellp() != 0) {
+            s << " ";
+        }
+        s << serv.first;
+    }
+
+    if (s.tellp() == 0) {
+        s << "none";
+    }
+
+    // Finally, print the hook libraries names
+    const isc::hooks::HookLibsCollection libs = ctx->getHooksConfig().get();
+    s << ", " << libs.size() << " lib(s):";
+    for (auto lib = libs.begin(); lib != libs.end(); ++lib) {
+        s << lib->first << " ";
+    }
+
+    return (s.str());
+}
+
+ConfigPtr
+NetconfCfgMgr::createNewContext() {
+    return (ConfigPtr(new NetconfConfig()));
+}
+
+isc::data::ConstElementPtr
+NetconfCfgMgr::parse(isc::data::ConstElementPtr config_set,
+                     bool check_only) {
+    // Do a sanity check first.
+    if (!config_set) {
+        isc_throw(ConfigError, "Mandatory config parameter not provided");
+    }
+
+    NetconfConfigPtr ctx = getNetconfConfig();
+
+    // Preserve all scalar global parameters.
+    ctx->extractConfiguredGlobals(config_set);
+
+    // Set the defaults and derive parameters.
+    ElementPtr cfg = boost::const_pointer_cast<Element>(config_set);
+    NetconfSimpleParser::setAllDefaults(cfg);
+    NetconfSimpleParser::deriveParameters(cfg);
+
+    // And parse the configuration.
+    ConstElementPtr answer;
+    std::string excuse;
+    try {
+        // Do the actual parsing
+        NetconfSimpleParser parser;
+        parser.parse(ctx, cfg, check_only);
+    } catch (const isc::Exception& ex) {
+        excuse = ex.what();
+        answer = createAnswer(CONTROL_RESULT_ERROR, excuse);
+    } catch (...) {
+        excuse = "undefined configuration parsing error";
+        answer = createAnswer(CONTROL_RESULT_ERROR, excuse);
+    }
+
+    // At this stage the answer was created only in case of exception.
+    if (answer) {
+        if (check_only) {
+            LOG_ERROR(netconf_logger, NETCONF_CONFIG_CHECK_FAIL).arg(excuse);
+        } else {
+            LOG_ERROR(netconf_logger, NETCONF_CONFIG_FAIL).arg(excuse);
+        }
+        return (answer);
+    }
+
+    if (check_only) {
+        answer = createAnswer(CONTROL_RESULT_SUCCESS,
+                              "Configuration check successful");
+    } else {
+        answer = createAnswer(CONTROL_RESULT_SUCCESS,
+                              "Configuration applied successfully.");
+    }
+
+    return (answer);
+}
+
+ElementPtr
+NetconfConfig::toElement() const {
+    ElementPtr netconf = ConfigBase::toElement();
+    // Set user-context
+    contextToElement(netconf);
+    // Add in explicitly configured globals.
+    netconf->setValue(configured_globals_->mapValue());
+    // Set hooks-libraries
+    netconf->set("hooks-libraries", hooks_config_.toElement());
+    // Set managed-servers
+    ElementPtr servers = Element::createMap();
+    for (auto serv : *servers_map_) {
+        ConstElementPtr server = serv.second->toElement();
+        servers->set(serv.first, server);
+    }
+    netconf->set("managed-servers", servers);
+    // Set Netconf
+    ElementPtr result = Element::createMap();
+    result->set("Netconf", netconf);
+    return (result);
+}
+
+std::list<std::list<std::string>>
+NetconfCfgMgr::jsonPathsToRedact() const {
+    static std::list<std::list<std::string>> const list({
+        {"hooks-libraries", "[]", "parameters", "*"},
+    });
+    return list;
+}
+
+} // namespace isc::netconf
+} // namespace isc
diff --git a/src/bin/netconf/netconf_cfg_mgr.h b/src/bin/netconf/netconf_cfg_mgr.h
new file mode 100644
index 0000000..ca9e80c
--- /dev/null
+++ b/src/bin/netconf/netconf_cfg_mgr.h
@@ -0,0 +1,186 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef NETCONF_CFG_MGR_H
+#define NETCONF_CFG_MGR_H
+
+#include <cc/data.h>
+#include <hooks/hooks_config.h>
+#include <process/d_cfg_mgr.h>
+#include <netconf/netconf_config.h>
+#include <boost/pointer_cast.hpp>
+#include <map>
+#include <string>
+
+namespace isc {
+namespace netconf {
+
+class NetconfConfig;
+/// @brief Pointer to a configuration context.
+typedef boost::shared_ptr<NetconfConfig> NetconfConfigPtr;
+
+/// @brief Netconf Configuration Context.
+///
+/// Implement the storage container for configuration context.
+/// It provides a single enclosure for the storage of configuration parameters
+/// and any other Netconf specific information that needs to be accessible
+/// during configuration parsing as well as to the application as a whole.
+/// It is derived from the context base class, ConfigBase.
+class NetconfConfig : public process::ConfigBase {
+public:
+
+    /// @brief Default constructor
+    NetconfConfig();
+
+    /// @brief Returns pointer to configured global parameters.
+    ///
+    /// @todo revisit this at the toElement first use.
+    isc::data::ConstElementPtr getConfiguredGlobals() const {
+        return (isc::data::ConstElementPtr(configured_globals_));
+    }
+
+    /// @brief Saves scalar elements from the global scope of a configuration.
+    void extractConfiguredGlobals(isc::data::ConstElementPtr config);
+
+    /// @brief Adds a parameter to the collection configured globals.
+    ///
+    /// @param name std::string name of the global to add.
+    /// @param value ElementPtr containing the value of the global.
+    void addConfiguredGlobal(const std::string& name,
+                             isc::data::ConstElementPtr value) {
+        configured_globals_->set(name, value);
+    }
+
+    /// @brief Returns non-const reference to the managed servers map.
+    ///
+    /// @return non-const reference to the managed servers map.
+    CfgServersMapPtr& getCfgServersMap() {
+        return (servers_map_);
+    }
+
+    /// @brief Returns const reference to the managed servers map.
+    ///
+    /// @return const reference to the managed servers map.
+    const CfgServersMapPtr& getCfgServersMap() const {
+        return (servers_map_);
+    }
+
+    /// @brief Returns non-const reference to configured hooks libraries.
+    ///
+    /// @return non-const reference to configured hooks libraries.
+    isc::hooks::HooksConfig& getHooksConfig() {
+        return (hooks_config_);
+    }
+
+    /// @brief Returns const reference to configured hooks libraries.
+    ///
+    /// @return const reference to configured hooks libraries.
+    const isc::hooks::HooksConfig& getHooksConfig() const {
+        return (hooks_config_);
+    }
+
+    /// @brief Unparse a configuration object
+    ///
+    /// Returns an element which must parse into the same object, i.e.
+    /// @code
+    /// for all valid config C parse(parse(C)->toElement()) == parse(C)
+    /// @endcode
+    ///
+    /// @return a pointer to a configuration which can be parsed into
+    /// the initial configuration object
+    virtual isc::data::ElementPtr toElement() const;
+
+private:
+
+    /// @brief Private copy constructor
+    ///
+    /// It is private to forbid anyone outside of this class to make copies.
+    ///
+    /// @param orig the original context to copy from
+    NetconfConfig(const NetconfConfig& orig);
+
+    /// @brief Private assignment operator to avoid potential for slicing.
+    ///
+    /// @param rhs Context to be assigned.
+    NetconfConfig& operator=(const NetconfConfig& rhs);
+
+    /// @brief Stores the global parameters specified via configuration.
+    isc::data::ElementPtr configured_globals_;
+
+    /// @brief CfgServers map.
+    CfgServersMapPtr servers_map_;
+
+    /// @brief Configured hooks libraries.
+    isc::hooks::HooksConfig hooks_config_;
+};
+
+/// @brief Ctrl Netconf Configuration Manager.
+///
+/// Provides the mechanisms for managing the Netconf application's
+/// configuration.
+class NetconfCfgMgr : public process::DCfgMgrBase {
+public:
+
+    /// @brief Constructor.
+    NetconfCfgMgr();
+
+    /// @brief Destructor
+    virtual ~NetconfCfgMgr() = default;
+
+    /// @brief Convenience method that returns the Netconf configuration
+    /// context.
+    ///
+    /// @return returns a pointer to the configuration context.
+    NetconfConfigPtr getNetconfConfig() {
+        return (boost::dynamic_pointer_cast<NetconfConfig>(getContext()));
+    }
+
+    /// @brief Returns configuration summary in the textual format.
+    ///
+    /// @param selection Bitfield which describes the parts of the configuration
+    /// to be returned. This parameter is ignored for Netconf.
+    ///
+    /// @return Summary of the configuration in the textual format.
+    virtual std::string getConfigSummary(const uint32_t selection);
+
+    /// @brief Return a list of all paths that contain passwords or secrets for
+    /// kea-netconf.
+    ///
+    /// @return the list of lists of sequential JSON map keys needed to reach
+    /// the passwords and secrets.
+    std::list<std::list<std::string>> jsonPathsToRedact() const;
+
+protected:
+
+    /// @brief Parses configuration of Netconf.
+    ///
+    /// @param config Pointer to a configuration specified for netconf.
+    /// @param check_only Boolean flag indicating if this method should
+    /// only verify correctness of the provided configuration.
+    /// @return Pointer to a result of configuration parsing.
+    virtual isc::data::ConstElementPtr
+    parse(isc::data::ConstElementPtr config, bool check_only);
+
+    /// @brief Creates a new, blank NetconfConfig context.
+    ///
+    ///
+    /// This method is used at the beginning of configuration process to
+    /// create a fresh, empty copy of a NetconfConfig. This new context
+    /// will be populated during the configuration process and will replace the
+    /// existing context provided the configuration process completes without
+    /// error.
+    ///
+    /// @return Returns a ConfigPtr to the new context instance.
+    virtual process::ConfigPtr createNewContext();
+};
+
+/// @brief Defines a shared pointer to NetconfCfgMgr.
+typedef boost::shared_ptr<NetconfCfgMgr> NetconfCfgMgrPtr;
+
+} // namespace isc::netconf
+} // namespace isc
+
+#endif // NETCONF_CFG_MGR_H
diff --git a/src/bin/netconf/netconf_config.cc b/src/bin/netconf/netconf_config.cc
new file mode 100644
index 0000000..f5a0531
--- /dev/null
+++ b/src/bin/netconf/netconf_config.cc
@@ -0,0 +1,211 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <netconf/netconf_log.h>
+#include <netconf/netconf_cfg_mgr.h>
+#include <exceptions/exceptions.h>
+#include <asiolink/io_error.h>
+
+#include <boost/foreach.hpp>
+#include <boost/scoped_ptr.hpp>
+#include <boost/algorithm/string/predicate.hpp>
+
+#include <sstream>
+#include <string>
+
+using namespace std;
+using namespace isc::process;
+using namespace isc::data;
+using namespace isc::http;
+
+namespace isc {
+namespace netconf {
+
+// *********************** CfgControlSocket  *************************
+
+CfgControlSocket::CfgControlSocket(Type type, const string& name,
+                                   const Url& url)
+    : type_(type), name_(name), url_(url) {
+}
+
+CfgControlSocket::Type
+CfgControlSocket::stringToType(const string& type) {
+    if (type == "unix") {
+        return (CfgControlSocket::Type::UNIX);
+    } else if (type == "http") {
+        return (CfgControlSocket::Type::HTTP);
+    } else if (type == "stdout") {
+        return (CfgControlSocket::Type::STDOUT);
+    }
+
+    isc_throw(BadValue, "Unknown control socket type: " << type);
+}
+
+const string
+CfgControlSocket::typeToString(CfgControlSocket::Type type) {
+    switch (type) {
+    case CfgControlSocket::Type::UNIX:
+        return ("unix");
+    case CfgControlSocket::Type::HTTP:
+        return ("http");
+    case CfgControlSocket::Type::STDOUT:
+        return ("stdout");
+    default:
+        isc_throw(BadValue, "Unknown control socket type: " << type);
+    }
+}
+
+ElementPtr
+CfgControlSocket::toElement() const {
+    ElementPtr result = Element::createMap();
+    // Set user-context
+    contextToElement(result);
+    // Set type
+    result->set("socket-type", Element::create(typeToString(type_)));
+    // Set name
+    result->set("socket-name", Element::create(name_));
+    // Set url
+    result->set("socket-url", Element::create(url_.toText()));
+    return (result);
+}
+
+// *********************** CfgServer  *************************
+CfgServer::CfgServer(const string& model, CfgControlSocketPtr ctrl_sock)
+    : model_(model), boot_update_(true), subscribe_changes_(true),
+      subscribe_notifications_(true), validate_changes_(true),
+      control_socket_(ctrl_sock) {
+}
+
+string
+CfgServer::toText() const {
+    ostringstream s;
+    s << "model: " << model_ << ", control socker: ";
+    if (!control_socket_) {
+        s << "none";
+    } else {
+        switch (control_socket_->getType()) {
+        case CfgControlSocket::Type::UNIX:
+            s << "UNIX:'" << control_socket_->getName() << "'";
+            break;
+        case CfgControlSocket::Type::HTTP:
+          s << "HTTP:'" << control_socket_->getUrl().toText() << "'";
+            break;
+        case CfgControlSocket::Type::STDOUT:
+            s << "STDOUT";
+            break;
+        }
+    }
+    return (s.str());
+}
+
+ElementPtr
+CfgServer::toElement() const {
+    ElementPtr result = Element::createMap();
+    // Set user-context
+    contextToElement(result);
+    // Set model
+    result->set("model", Element::create(model_));
+    // Set boot-update
+    result->set("boot-update", Element::create(boot_update_));
+    // Set subscribe-changes
+    result->set("subscribe-changes", Element::create(subscribe_changes_));
+    // Set validate-changes
+    result->set("validate-changes", Element::create(validate_changes_));
+    // Set control-socket
+    if (control_socket_) {
+        result->set("control-socket", control_socket_->toElement());
+    }
+    return (result);
+}
+
+ostream&
+operator<<(ostream& os, const CfgServer& server) {
+    os << server.toText();
+    return (os);
+}
+
+// *************************** PARSERS ***********************************
+
+// *********************** ControlSocketConfigParser  *************************
+
+CfgControlSocketPtr
+ControlSocketConfigParser::parse(ConstElementPtr ctrl_sock_config) {
+    CfgControlSocketPtr result;
+    string type_str = getString(ctrl_sock_config, "socket-type");
+    string name = getString(ctrl_sock_config, "socket-name");
+    string url_str = getString(ctrl_sock_config, "socket-url");
+    ConstElementPtr user_context = ctrl_sock_config->get("user-context");
+
+    // Type must be valid.
+    CfgControlSocket::Type type;
+    try {
+        type = CfgControlSocket::stringToType(type_str);
+    } catch (const std::exception& ex) {
+        isc_throw(ConfigError, ex.what() << " '" << type_str << "' ("
+                  << getPosition("socket-type", ctrl_sock_config)  << ")");
+    }
+
+    // Url must be valid.
+    Url url(url_str);
+    if (!url.isValid()) {
+        isc_throw(ConfigError, "invalid control socket url: "
+                  << url.getErrorMessage() << " '" << url_str << "' ("
+                  << getPosition("socket-url", ctrl_sock_config)  << ")");
+    }
+
+    // Create the control socket.
+    try {
+        result.reset(new CfgControlSocket(type, name, url));
+    } catch (const std::exception& ex) {
+        isc_throw(ConfigError, ex.what() << " ("
+                  << ctrl_sock_config->getPosition() << ")");
+    }
+
+    // Add user-context.
+    if (user_context) {
+        result->setContext(user_context);
+    }
+
+    return (result);
+}
+
+// *********************** ServerConfigParser  *************************
+
+CfgServerPtr
+ServerConfigParser::parse(ConstElementPtr server_config) {
+    CfgServerPtr result;
+    string model = getString(server_config, "model");
+    ConstElementPtr user_context = server_config->get("user-context");
+    ConstElementPtr ctrl_sock_config = server_config->get("control-socket");
+    CfgControlSocketPtr ctrl_sock;
+    if (ctrl_sock_config) {
+        ControlSocketConfigParser parser;
+        ctrl_sock = parser.parse(ctrl_sock_config);
+    }
+    try {
+        result.reset(new CfgServer(model, ctrl_sock));
+    } catch (const std::exception& ex) {
+        isc_throw(ConfigError, ex.what() << " ("
+                  << server_config->getPosition() << ")");
+    }
+
+    // Add flags.
+    result->setBootUpdate(getBoolean(server_config, "boot-update"));
+    result->setSubscribeChanges(getBoolean(server_config, "subscribe-changes"));
+    result->setValidateChanges(getBoolean(server_config, "validate-changes"));
+
+    // Add user-context.
+    if (user_context) {
+        result->setContext(user_context);
+    }
+
+    return (result);
+}
+
+}  // namespace netconf
+}  // namespace isc
diff --git a/src/bin/netconf/netconf_config.h b/src/bin/netconf/netconf_config.h
new file mode 100644
index 0000000..18e7a9d
--- /dev/null
+++ b/src/bin/netconf/netconf_config.h
@@ -0,0 +1,328 @@
+// Copyright (C) 2018-2022 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef NETCONF_CONFIG_H
+#define NETCONF_CONFIG_H
+
+#include <cc/data.h>
+#include <cc/cfg_to_element.h>
+#include <cc/user_context.h>
+#include <cc/simple_parser.h>
+#include <http/url.h>
+#include <exceptions/exceptions.h>
+
+#include <boost/foreach.hpp>
+
+#include <stdint.h>
+#include <string>
+
+namespace isc {
+namespace netconf {
+
+/// @file netconf_config.h
+/// @brief A collection of classes for housing and parsing the application
+/// configuration necessary for the Netconf application.
+///
+/// @note NetconfConfig is not here: this file contains component of
+/// this class but not the class itself.
+///
+/// This file contains the class declarations for the class hierarchy created
+/// from the Netconf configuration and the parser classes used to create it.
+/// The application configuration consists of a list of managed server.
+///
+/// The parsing class hierarchy reflects this same scheme.  Working top down:
+///
+/// A ServerMapParser handles the managed servers map invoking a
+/// ServerConfigParser to parse each server.
+///
+/// A ServerConfigParser handles the scalars which belong to the server as well
+/// as creating and invoking a CtrlSocketParser to parse its control socket.
+///
+/// A CtrlSocketParser handles the scalars which belong to the control socket.
+///
+/// The following is sample configuration in JSON form with extra spacing
+/// for clarity:
+///
+/// @code
+/// {
+///  "managed-servers" :
+///  {
+///    "dhcp4":
+///    {
+///      "model": "kea-dhcp4-server",
+///      "control-socket":
+///      {
+///        "socket-type": "unix",
+///        "socket-name": "/tmp/server-v4.sock"
+///      }
+///    }
+///  }
+/// }
+/// @endcode
+
+/// @brief Represents a Control Socket.
+///
+/// Acts as a storage class containing the basic attributes which
+/// describe a Control Socket.
+class CfgControlSocket : public isc::data::UserContext,
+    public isc::data::CfgToElement {
+public:
+    /// @brief Defines the list of possible control socket types.
+    enum Type {
+        UNIX,    //< Unix socket.
+        HTTP,    //< HTTP socket.
+        STDOUT   //< standard output.
+    };
+
+    /// @brief Constructor.
+    ///
+    /// @param type The socket type.
+    /// @param name The Unix socket name.
+    /// @param url The HTTP server URL.
+    CfgControlSocket(Type type, const std::string& name,
+                     const isc::http::Url& url);
+
+    /// @brief Destructor (doing nothing).
+    virtual ~CfgControlSocket() = default;
+
+    /// @brief Getter which returns the socket type.
+    ///
+    /// @return returns the socket type as a CfgControlSocket::Type.
+    Type getType() const {
+        return (type_);
+    }
+
+    /// @brief Getter which returns the Unix socket name.
+    ///
+    /// @return returns the Unix socket name as a std::string.
+    const std::string getName() const {
+        return (name_);
+    }
+
+    /// @brief Getter which returns the HTTP server URL.
+    ///
+    /// @return returns the HTTP server URL as an isc::http::Url.
+    const isc::http::Url getUrl() const {
+        return (url_);
+    }
+
+    /// @brief Converts socket type name to CfgControlSocket::Type.
+    ///
+    /// @param type The type name.
+    /// Currently supported values are "unix", "http" and "stdout".
+    ///
+    /// @return The CfgControlSocket::Type corresponding to the type name.
+    /// @throw BadValue if the type name isn't recognized.
+    static Type stringToType(const std::string& type);
+
+    /// @brief Converts CfgControlSocket::Type to string.
+    ///
+    /// @param type The CfgControlSocket::Type type.
+    /// @return The type name corresponding to the enumeration element.
+    static const std::string typeToString(CfgControlSocket::Type type);
+
+    /// @brief Unparse a configuration object
+    ///
+    /// @return a pointer to a configuration
+    virtual isc::data::ElementPtr toElement() const;
+
+private:
+    /// @brief The socket type.
+    Type type_;
+
+    /// @brief The UNIX socket name.
+    const std::string name_;
+
+    /// @brief The HTTP server URL.
+    const isc::http::Url url_;
+};
+
+/// @brief Defines a pointer for CfgControlSocket instances.
+typedef boost::shared_ptr<CfgControlSocket> CfgControlSocketPtr;
+
+/// @brief Represents a Managed CfgServer.
+///
+/// Acts as a storage class containing the basic attributes and
+/// the Control Socket which describe a Managed CfgServer.
+class CfgServer : public isc::data::UserContext, public isc::data::CfgToElement {
+public:
+    /// @brief Constructor.
+    ///
+    /// @param model The model name.
+    /// @param ctrl_sock The control socket.
+    CfgServer(const std::string& model, CfgControlSocketPtr ctrl_sock);
+
+    /// @brief Destructor (doing nothing).
+    virtual ~CfgServer() = default;
+
+    /// @brief Getter which returns the model name.
+    ///
+    /// @return returns the model name as a std::string
+    const std::string getModel() const {
+        return (model_);
+    }
+
+    /// @brief Getter which returns the control socket.
+    ///
+    /// @return returns the control socket as a CfgControlSocketPtr.
+    const CfgControlSocketPtr& getCfgControlSocket() const {
+        return (control_socket_);
+    }
+
+    /// @brief Getter which returns the boot-update flag.
+    ///
+    /// @return returns the boot-update flag as a bool.
+    bool getBootUpdate() const {
+        return (boot_update_);
+    }
+
+    /// @brief Set the boot-update flag.
+    ///
+    /// @param boot_update The boot-update flag.
+    void setBootUpdate(bool boot_update) {
+        boot_update_ = boot_update;
+    }
+
+    /// @brief Getter which returns the subscribe-changes flag.
+    ///
+    /// @return returns the subscribe-changes flag as a bool.
+    bool getSubscribeChanges() const {
+        return (subscribe_changes_);
+    }
+
+    /// @brief Getter which returns the subscribe-changes flag.
+    ///
+    /// @return returns the subscribe-changes flag as a bool.
+    bool getSubscribeNotifications() const {
+        return (subscribe_notifications_);
+    }
+
+    /// @brief Set the subscribe-changes flag.
+    ///
+    /// @param subscribe_changes The subscribe-changes flag.
+    void setSubscribeChanges(bool subscribe_changes) {
+        subscribe_changes_ = subscribe_changes;
+    }
+
+    /// @brief Set the subscribe-notifications flag.
+    ///
+    /// @param subscribe_notifications the subscribe-notifications flag
+    void setSubscribeNotifications(bool subscribe_notifications) {
+        subscribe_notifications_ = subscribe_notifications;
+    }
+
+    /// @brief Getter which returns the validate-changes flag.
+    ///
+    /// @return returns the validate-changes flag as a bool.
+    bool getValidateChanges() const {
+        return (validate_changes_);
+    }
+
+    /// @brief Set the validate-changes flag.
+    ///
+    /// @param validate_changes The validate-changes flag.
+    void setValidateChanges(bool validate_changes) {
+        validate_changes_ = validate_changes;
+    }
+
+    /// @brief Returns a text representation for the server.
+    std::string toText() const;
+
+    /// @brief Unparse a configuration object
+    ///
+    /// @return a pointer to a configuration
+    virtual isc::data::ElementPtr toElement() const;
+
+private:
+    /// @brief The model name.
+    const std::string model_;
+
+    /// @brief The boot-update flag.
+    ///
+    /// If true (the default) Kea server configuration is updated at (netconf
+    /// agent) boot time.
+    bool boot_update_;
+
+    /// @brief The subscribe-changes flag.
+    ///
+    /// If true (the default) the netconf agent subscribes module changes
+    /// so will be notified when the YANG running configuration is changed.
+    bool subscribe_changes_;
+
+    /// @brief The subscribe-notifications flag.
+    ///
+    /// If true (the default) the netconf agent subscribes to the notifications
+    /// API so it will be notified on various events like module installations
+    /// and uninstallations.
+    bool subscribe_notifications_;
+
+    /// @brief The validate-changes flag.
+    ///
+    /// If true (the default) the netconf agent validates module changes
+    /// and can reject bad configurations.
+    bool validate_changes_;
+
+    /// @brief The control socket.
+    CfgControlSocketPtr control_socket_;
+};
+
+/// @brief Defines a pointer for CfgServer instances.
+typedef boost::shared_ptr<CfgServer> CfgServerPtr;
+
+/// @brief Defines a map of CfgServers, keyed by the name.
+typedef std::map<std::string, CfgServerPtr> CfgServersMap;
+
+/// @brief Defines a iterator pairing of name and CfgServer
+typedef std::pair<std::string, CfgServerPtr> CfgServersMapPair;
+
+/// @brief Defines a pointer to map of CfgServers.
+typedef boost::shared_ptr<CfgServersMap> CfgServersMapPtr;
+
+/// @brief Dumps the contents of a CfgServer as text to a output stream.
+///
+/// @param os The output stream to which text should be sent.
+/// @param server The CfgServer instance to dump.
+std::ostream& operator<<(std::ostream& os, const CfgServer& server);
+
+/// @brief Parser for CfgControlSocket.
+///
+/// This class parses the configuration element "control-socket"
+/// and creates an instance of a CfgControlSocket.
+class ControlSocketConfigParser : public data::SimpleParser {
+public:
+    /// @brief Performs the actual parsing of the given "control-socket" element.
+    ///
+    /// Parses a configuration for the elements needed to instantiate a
+    /// CfgControlSocket, validates those entries, creates a CfgControlSocket
+    /// instance.
+    ///
+    /// @param ctrl_sock_config is the "control-socket" configuration to parse.
+    ///
+    /// @return pointer to the new CfgControlSocket instance.
+    CfgControlSocketPtr parse(data::ConstElementPtr ctrl_sock_config);
+};
+
+/// @brief Parser for CfgServer.
+///
+/// This class parses the configuration value from the "managed-servers" map
+/// and creates an instance of a CfgServer.
+class ServerConfigParser : public data::SimpleParser {
+public:
+    /// @brief Performs the actual parsing of the given value from
+    /// the "managed-servers" map.
+    ///
+    /// Parses a configuration for the elements needed to instantiate a
+    /// CfgServer, validates those entries, creates a CfgServer instance.
+    ///
+    /// @param server_config is the value from the "managed-servers" map to parse.
+    /// @return pointer to the new CfgServer instance.
+    CfgServerPtr parse(data::ConstElementPtr server_config);
+};
+
+}  // namespace netconf
+}  // namespace isc
+
+#endif // NETCONF_CONFIG_H
diff --git a/src/bin/netconf/netconf_controller.cc b/src/bin/netconf/netconf_controller.cc
new file mode 100644
index 0000000..7d85329
--- /dev/null
+++ b/src/bin/netconf/netconf_controller.cc
@@ -0,0 +1,75 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <cfgrpt/config_report.h>
+#include <netconf/netconf_controller.h>
+#include <netconf/netconf_process.h>
+#include <netconf/parser_context.h>
+
+#include <signal.h>
+
+using namespace isc::process;
+
+namespace isc {
+namespace netconf {
+
+/// @brief Defines the application name, this is passed into base class
+/// it may be used to locate configuration data and appears in log statement.
+const char* NetconfController::netconf_app_name_ = "Netconf";
+
+/// @brief Defines the executable name. This is passed into the base class
+const char* NetconfController::netconf_bin_name_ = "kea-netconf";
+
+DControllerBasePtr&
+NetconfController::instance() {
+    // If the instance hasn't been created yet, create it.  Note this method
+    // must use the base class singleton instance methods.
+    if (!getController()) {
+        DControllerBasePtr controller_ptr(new NetconfController());
+        setController(controller_ptr);
+    }
+
+    return (getController());
+}
+
+void
+NetconfController::processSignal(int signum) {
+    if (signum == SIGHUP) {
+        LOG_WARN(dctl_logger, DCTL_UNSUPPORTED_SIGNAL).arg(signum);
+    } else {
+        DControllerBase::processSignal(signum);
+    }
+}
+
+DProcessBase*
+NetconfController::createProcess() {
+    // Instantiate and return an instance of the D2 application process. Note
+    // that the process is passed the controller's io_service.
+    return (new NetconfProcess(getAppName().c_str(), getIOService()));
+}
+
+isc::data::ConstElementPtr
+NetconfController::parseFile(const std::string& name) {
+    ParserContext parser;
+    return (parser.parseFile(name, ParserContext::PARSER_NETCONF));
+}
+
+NetconfController::NetconfController()
+    : DControllerBase(netconf_app_name_, netconf_bin_name_) {
+}
+
+NetconfProcessPtr
+NetconfController::getNetconfProcess() {
+    return (boost::dynamic_pointer_cast<NetconfProcess>(getProcess()));
+}
+
+// Refer to config_report so it will be embedded in the binary.
+const char* const* netconf_config_report = isc::detail::config_report;
+
+} // namespace isc::netconf
+} // namespace isc
diff --git a/src/bin/netconf/netconf_controller.h b/src/bin/netconf/netconf_controller.h
new file mode 100644
index 0000000..b1d8cf6
--- /dev/null
+++ b/src/bin/netconf/netconf_controller.h
@@ -0,0 +1,85 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef NETCONF_CONTROLLER_H
+#define NETCONF_CONTROLLER_H
+
+#include <netconf/netconf_process.h>
+#include <process/d_controller.h>
+
+namespace isc {
+namespace netconf {
+
+/// @brief Process Controller for Netconf Process.
+///
+/// This class is the Netconf specific derivation of the DControllerBase.
+/// It creates and manages an instance of the Netconf application process,
+/// NetconfProcess.
+class NetconfController : public process::DControllerBase {
+public:
+
+    /// @brief Static singleton instance method.
+    ///
+    /// This method returns the base class singleton instance member.
+    /// It instantiates the singleton and sets the base class instance
+    /// member upon first invocation.
+    ///
+    /// @return returns the pointer reference to the singleton instance.
+    static process::DControllerBasePtr& instance();
+
+    /// @brief Destructor
+    virtual ~NetconfController() = default;
+
+    /// @brief Returns pointer to an instance of the underlying process object.
+    NetconfProcessPtr getNetconfProcess();
+
+    /// @brief Defines the application name, this is passed into base class
+    /// and appears in log statements.
+    static const char* netconf_app_name_;
+
+    /// @brief Defines the executable name. This is passed into the base class
+    /// by convention this should match the executable name.
+    static const char* netconf_bin_name_;
+
+    /// @brief Parses the configuration file using Netconf::ParserContext (bison)
+    ///
+    /// @param name name of the text file to be parsed
+    /// @return Element tree structure representing parsed configuration
+    isc::data::ConstElementPtr
+    parseFile(const std::string& name);
+
+    /// @brief Redefined application-level signal processing method.
+    ///
+    /// This method ignores SIGHUP as configuration reloading is not yet
+    /// supported.
+    /// @param signum signal number to process.
+    virtual void processSignal(int signum);
+
+private:
+
+    /// @brief Creates an instance of the Netconf application process.
+    ///
+    /// This method is invoked during the process initialization step of
+    /// the controller launch.
+    ///
+    /// @return returns a DProcessBase* to the application process created.
+    /// Note the caller is responsible for destructing the process. This
+    /// is handled by the base class, which wraps this pointer with a smart
+    /// pointer.
+    virtual process::DProcessBase* createProcess();
+
+    /// @brief Constructor is declared private to maintain the integrity of
+    /// the singleton instance.
+    NetconfController();
+};
+
+// @Defines a shared pointer to NetconfController
+typedef boost::shared_ptr<NetconfController> NetconfControllerPtr;
+
+} // namespace isc::netconf
+} // namespace isc
+
+#endif // NETCONF_CONTROLLER_H
diff --git a/src/bin/netconf/netconf_lexer.cc b/src/bin/netconf/netconf_lexer.cc
new file mode 100644
index 0000000..7e21e12
--- /dev/null
+++ b/src/bin/netconf/netconf_lexer.cc
@@ -0,0 +1,3949 @@
+#line 1 "netconf_lexer.cc"
+
+#line 3 "netconf_lexer.cc"
+
+#define  YY_INT_ALIGNED short int
+
+/* A lexical scanner generated by flex */
+
+/* %not-for-header */
+/* %if-c-only */
+/* %if-not-reentrant */
+#define yy_create_buffer netconf__create_buffer
+#define yy_delete_buffer netconf__delete_buffer
+#define yy_scan_buffer netconf__scan_buffer
+#define yy_scan_string netconf__scan_string
+#define yy_scan_bytes netconf__scan_bytes
+#define yy_init_buffer netconf__init_buffer
+#define yy_flush_buffer netconf__flush_buffer
+#define yy_load_buffer_state netconf__load_buffer_state
+#define yy_switch_to_buffer netconf__switch_to_buffer
+#define yypush_buffer_state netconf_push_buffer_state
+#define yypop_buffer_state netconf_pop_buffer_state
+#define yyensure_buffer_stack netconf_ensure_buffer_stack
+#define yy_flex_debug netconf__flex_debug
+#define yyin netconf_in
+#define yyleng netconf_leng
+#define yylex netconf_lex
+#define yylineno netconf_lineno
+#define yyout netconf_out
+#define yyrestart netconf_restart
+#define yytext netconf_text
+#define yywrap netconf_wrap
+#define yyalloc netconf_alloc
+#define yyrealloc netconf_realloc
+#define yyfree netconf_free
+
+/* %endif */
+/* %endif */
+/* %ok-for-header */
+
+#define FLEX_SCANNER
+#define YY_FLEX_MAJOR_VERSION 2
+#define YY_FLEX_MINOR_VERSION 6
+#define YY_FLEX_SUBMINOR_VERSION 4
+#if YY_FLEX_SUBMINOR_VERSION > 0
+#define FLEX_BETA
+#endif
+
+/* %if-c++-only */
+/* %endif */
+
+/* %if-c-only */
+#ifdef yy_create_buffer
+#define netconf__create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer netconf__create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define netconf__delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer netconf__delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define netconf__scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer netconf__scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define netconf__scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string netconf__scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define netconf__scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes netconf__scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define netconf__init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer netconf__init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define netconf__flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer netconf__flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define netconf__load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state netconf__load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define netconf__switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer netconf__switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define netconf_push_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state netconf_push_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define netconf_pop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state netconf_pop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define netconf_ensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack netconf_ensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define netconf_lex_ALREADY_DEFINED
+#else
+#define yylex netconf_lex
+#endif
+
+#ifdef yyrestart
+#define netconf_restart_ALREADY_DEFINED
+#else
+#define yyrestart netconf_restart
+#endif
+
+#ifdef yylex_init
+#define netconf_lex_init_ALREADY_DEFINED
+#else
+#define yylex_init netconf_lex_init
+#endif
+
+#ifdef yylex_init_extra
+#define netconf_lex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra netconf_lex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define netconf_lex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy netconf_lex_destroy
+#endif
+
+#ifdef yyget_debug
+#define netconf_get_debug_ALREADY_DEFINED
+#else
+#define yyget_debug netconf_get_debug
+#endif
+
+#ifdef yyset_debug
+#define netconf_set_debug_ALREADY_DEFINED
+#else
+#define yyset_debug netconf_set_debug
+#endif
+
+#ifdef yyget_extra
+#define netconf_get_extra_ALREADY_DEFINED
+#else
+#define yyget_extra netconf_get_extra
+#endif
+
+#ifdef yyset_extra
+#define netconf_set_extra_ALREADY_DEFINED
+#else
+#define yyset_extra netconf_set_extra
+#endif
+
+#ifdef yyget_in
+#define netconf_get_in_ALREADY_DEFINED
+#else
+#define yyget_in netconf_get_in
+#endif
+
+#ifdef yyset_in
+#define netconf_set_in_ALREADY_DEFINED
+#else
+#define yyset_in netconf_set_in
+#endif
+
+#ifdef yyget_out
+#define netconf_get_out_ALREADY_DEFINED
+#else
+#define yyget_out netconf_get_out
+#endif
+
+#ifdef yyset_out
+#define netconf_set_out_ALREADY_DEFINED
+#else
+#define yyset_out netconf_set_out
+#endif
+
+#ifdef yyget_leng
+#define netconf_get_leng_ALREADY_DEFINED
+#else
+#define yyget_leng netconf_get_leng
+#endif
+
+#ifdef yyget_text
+#define netconf_get_text_ALREADY_DEFINED
+#else
+#define yyget_text netconf_get_text
+#endif
+
+#ifdef yyget_lineno
+#define netconf_get_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno netconf_get_lineno
+#endif
+
+#ifdef yyset_lineno
+#define netconf_set_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno netconf_set_lineno
+#endif
+
+#ifdef yywrap
+#define netconf_wrap_ALREADY_DEFINED
+#else
+#define yywrap netconf_wrap
+#endif
+
+/* %endif */
+
+#ifdef yyalloc
+#define netconf_alloc_ALREADY_DEFINED
+#else
+#define yyalloc netconf_alloc
+#endif
+
+#ifdef yyrealloc
+#define netconf_realloc_ALREADY_DEFINED
+#else
+#define yyrealloc netconf_realloc
+#endif
+
+#ifdef yyfree
+#define netconf_free_ALREADY_DEFINED
+#else
+#define yyfree netconf_free
+#endif
+
+/* %if-c-only */
+
+#ifdef yytext
+#define netconf_text_ALREADY_DEFINED
+#else
+#define yytext netconf_text
+#endif
+
+#ifdef yyleng
+#define netconf_leng_ALREADY_DEFINED
+#else
+#define yyleng netconf_leng
+#endif
+
+#ifdef yyin
+#define netconf_in_ALREADY_DEFINED
+#else
+#define yyin netconf_in
+#endif
+
+#ifdef yyout
+#define netconf_out_ALREADY_DEFINED
+#else
+#define yyout netconf_out
+#endif
+
+#ifdef yy_flex_debug
+#define netconf__flex_debug_ALREADY_DEFINED
+#else
+#define yy_flex_debug netconf__flex_debug
+#endif
+
+#ifdef yylineno
+#define netconf_lineno_ALREADY_DEFINED
+#else
+#define yylineno netconf_lineno
+#endif
+
+/* %endif */
+
+/* First, we deal with  platform-specific or compiler-specific issues. */
+
+/* begin standard C headers. */
+/* %if-c-only */
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+/* %endif */
+
+/* %if-tables-serialization */
+/* %endif */
+/* end standard C headers. */
+
+/* %if-c-or-c++ */
+/* flex integer type definitions */
+
+#ifndef FLEXINT_H
+#define FLEXINT_H
+
+/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
+
+#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+
+/* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
+ * if you want the limit (max/min) macros for int types. 
+ */
+#ifndef __STDC_LIMIT_MACROS
+#define __STDC_LIMIT_MACROS 1
+#endif
+
+#include <inttypes.h>
+typedef int8_t flex_int8_t;
+typedef uint8_t flex_uint8_t;
+typedef int16_t flex_int16_t;
+typedef uint16_t flex_uint16_t;
+typedef int32_t flex_int32_t;
+typedef uint32_t flex_uint32_t;
+#else
+typedef signed char flex_int8_t;
+typedef short int flex_int16_t;
+typedef int flex_int32_t;
+typedef unsigned char flex_uint8_t; 
+typedef unsigned short int flex_uint16_t;
+typedef unsigned int flex_uint32_t;
+
+/* Limits of integral types. */
+#ifndef INT8_MIN
+#define INT8_MIN               (-128)
+#endif
+#ifndef INT16_MIN
+#define INT16_MIN              (-32767-1)
+#endif
+#ifndef INT32_MIN
+#define INT32_MIN              (-2147483647-1)
+#endif
+#ifndef INT8_MAX
+#define INT8_MAX               (127)
+#endif
+#ifndef INT16_MAX
+#define INT16_MAX              (32767)
+#endif
+#ifndef INT32_MAX
+#define INT32_MAX              (2147483647)
+#endif
+#ifndef UINT8_MAX
+#define UINT8_MAX              (255U)
+#endif
+#ifndef UINT16_MAX
+#define UINT16_MAX             (65535U)
+#endif
+#ifndef UINT32_MAX
+#define UINT32_MAX             (4294967295U)
+#endif
+
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
+#endif /* ! C99 */
+
+#endif /* ! FLEXINT_H */
+
+/* %endif */
+
+/* begin standard C++ headers. */
+/* %if-c++-only */
+/* %endif */
+
+/* TODO: this is always defined, so inline it */
+#define yyconst const
+
+#if defined(__GNUC__) && __GNUC__ >= 3
+#define yynoreturn __attribute__((__noreturn__))
+#else
+#define yynoreturn
+#endif
+
+/* %not-for-header */
+/* Returned upon end-of-file. */
+#define YY_NULL 0
+/* %ok-for-header */
+
+/* %not-for-header */
+/* Promotes a possibly negative, possibly signed char to an
+ *   integer in range [0..255] for use as an array index.
+ */
+#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
+/* %ok-for-header */
+
+/* %if-reentrant */
+/* %endif */
+
+/* %if-not-reentrant */
+
+/* %endif */
+
+/* Enter a start condition.  This macro really ought to take a parameter,
+ * but we do it the disgusting crufty way forced on us by the ()-less
+ * definition of BEGIN.
+ */
+#define BEGIN (yy_start) = 1 + 2 *
+/* Translate the current start state into a value that can be later handed
+ * to BEGIN to return to the state.  The YYSTATE alias is for lex
+ * compatibility.
+ */
+#define YY_START (((yy_start) - 1) / 2)
+#define YYSTATE YY_START
+/* Action number for EOF rule of a given start state. */
+#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
+/* Special action meaning "start processing a new file". */
+#define YY_NEW_FILE yyrestart( yyin  )
+#define YY_END_OF_BUFFER_CHAR 0
+
+/* Size of default input buffer. */
+#ifndef YY_BUF_SIZE
+#ifdef __ia64__
+/* On IA-64, the buffer size is 16k, not 8k.
+ * Moreover, YY_BUF_SIZE is 2*YY_READ_BUF_SIZE in the general case.
+ * Ditto for the __ia64__ case accordingly.
+ */
+#define YY_BUF_SIZE 32768
+#else
+#define YY_BUF_SIZE 16384
+#endif /* __ia64__ */
+#endif
+
+/* The state buf must be large enough to hold one state per character in the main buffer.
+ */
+#define YY_STATE_BUF_SIZE   ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))
+
+#ifndef YY_TYPEDEF_YY_BUFFER_STATE
+#define YY_TYPEDEF_YY_BUFFER_STATE
+typedef struct yy_buffer_state *YY_BUFFER_STATE;
+#endif
+
+#ifndef YY_TYPEDEF_YY_SIZE_T
+#define YY_TYPEDEF_YY_SIZE_T
+typedef size_t yy_size_t;
+#endif
+
+/* %if-not-reentrant */
+extern int yyleng;
+/* %endif */
+
+/* %if-c-only */
+/* %if-not-reentrant */
+extern FILE *yyin, *yyout;
+/* %endif */
+/* %endif */
+
+#define EOB_ACT_CONTINUE_SCAN 0
+#define EOB_ACT_END_OF_FILE 1
+#define EOB_ACT_LAST_MATCH 2
+    
+    #define YY_LESS_LINENO(n)
+    #define YY_LINENO_REWIND_TO(ptr)
+    
+/* Return all but the first "n" matched characters back to the input stream. */
+#define yyless(n) \
+	do \
+		{ \
+		/* Undo effects of setting up yytext. */ \
+        int yyless_macro_arg = (n); \
+        YY_LESS_LINENO(yyless_macro_arg);\
+		*yy_cp = (yy_hold_char); \
+		YY_RESTORE_YY_MORE_OFFSET \
+		(yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
+		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
+		} \
+	while ( 0 )
+#define unput(c) yyunput( c, (yytext_ptr)  )
+
+#ifndef YY_STRUCT_YY_BUFFER_STATE
+#define YY_STRUCT_YY_BUFFER_STATE
+struct yy_buffer_state
+	{
+/* %if-c-only */
+	FILE *yy_input_file;
+/* %endif */
+
+/* %if-c++-only */
+/* %endif */
+
+	char *yy_ch_buf;		/* input buffer */
+	char *yy_buf_pos;		/* current position in input buffer */
+
+	/* Size of input buffer in bytes, not including room for EOB
+	 * characters.
+	 */
+	int yy_buf_size;
+
+	/* Number of characters read into yy_ch_buf, not including EOB
+	 * characters.
+	 */
+	int yy_n_chars;
+
+	/* Whether we "own" the buffer - i.e., we know we created it,
+	 * and can realloc() it to grow it, and should free() it to
+	 * delete it.
+	 */
+	int yy_is_our_buffer;
+
+	/* Whether this is an "interactive" input source; if so, and
+	 * if we're using stdio for input, then we want to use getc()
+	 * instead of fread(), to make sure we stop fetching input after
+	 * each newline.
+	 */
+	int yy_is_interactive;
+
+	/* Whether we're considered to be at the beginning of a line.
+	 * If so, '^' rules will be active on the next match, otherwise
+	 * not.
+	 */
+	int yy_at_bol;
+
+    int yy_bs_lineno; /**< The line count. */
+    int yy_bs_column; /**< The column count. */
+
+	/* Whether to try to fill the input buffer when we reach the
+	 * end of it.
+	 */
+	int yy_fill_buffer;
+
+	int yy_buffer_status;
+
+#define YY_BUFFER_NEW 0
+#define YY_BUFFER_NORMAL 1
+	/* When an EOF's been seen but there's still some text to process
+	 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
+	 * shouldn't try reading from the input source any more.  We might
+	 * still have a bunch of tokens to match, though, because of
+	 * possible backing-up.
+	 *
+	 * When we actually see the EOF, we change the status to "new"
+	 * (via yyrestart()), so that the user can continue scanning by
+	 * just pointing yyin at a new input file.
+	 */
+#define YY_BUFFER_EOF_PENDING 2
+
+	};
+#endif /* !YY_STRUCT_YY_BUFFER_STATE */
+
+/* %if-c-only Standard (non-C++) definition */
+/* %not-for-header */
+/* %if-not-reentrant */
+
+/* Stack of input buffers. */
+static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */
+static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */
+static YY_BUFFER_STATE * yy_buffer_stack = NULL; /**< Stack as an array. */
+/* %endif */
+/* %ok-for-header */
+
+/* %endif */
+
+/* We provide macros for accessing buffer states in case in the
+ * future we want to put the buffer states in a more general
+ * "scanner state".
+ *
+ * Returns the top of the stack, or NULL.
+ */
+#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
+                          ? (yy_buffer_stack)[(yy_buffer_stack_top)] \
+                          : NULL)
+/* Same as previous macro, but useful when we know that the buffer stack is not
+ * NULL or when we need an lvalue. For internal use only.
+ */
+#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]
+
+/* %if-c-only Standard (non-C++) definition */
+
+/* %if-not-reentrant */
+/* %not-for-header */
+/* yy_hold_char holds the character lost when yytext is formed. */
+static char yy_hold_char;
+static int yy_n_chars;		/* number of characters read into yy_ch_buf */
+int yyleng;
+
+/* Points to current character in buffer. */
+static char *yy_c_buf_p = NULL;
+static int yy_init = 0;		/* whether we need to initialize */
+static int yy_start = 0;	/* start state number */
+
+/* Flag which is used to allow yywrap()'s to do buffer switches
+ * instead of setting up a fresh yyin.  A bit of a hack ...
+ */
+static int yy_did_buffer_switch_on_eof;
+/* %ok-for-header */
+
+/* %endif */
+
+void yyrestart ( FILE *input_file  );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer  );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size  );
+void yy_delete_buffer ( YY_BUFFER_STATE b  );
+void yy_flush_buffer ( YY_BUFFER_STATE b  );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer  );
+void yypop_buffer_state ( void );
+
+static void yyensure_buffer_stack ( void );
+static void yy_load_buffer_state ( void );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file  );
+#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER )
+
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size  );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str  );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len  );
+
+/* %endif */
+
+void *yyalloc ( yy_size_t  );
+void *yyrealloc ( void *, yy_size_t  );
+void yyfree ( void *  );
+
+#define yy_new_buffer yy_create_buffer
+#define yy_set_interactive(is_interactive) \
+	{ \
+	if ( ! YY_CURRENT_BUFFER ){ \
+        yyensure_buffer_stack (); \
+		YY_CURRENT_BUFFER_LVALUE =    \
+            yy_create_buffer( yyin, YY_BUF_SIZE ); \
+	} \
+	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
+	}
+#define yy_set_bol(at_bol) \
+	{ \
+	if ( ! YY_CURRENT_BUFFER ){\
+        yyensure_buffer_stack (); \
+		YY_CURRENT_BUFFER_LVALUE =    \
+            yy_create_buffer( yyin, YY_BUF_SIZE ); \
+	} \
+	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
+	}
+#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
+
+/* %% [1.0] yytext/yyin/yyout/yy_state_type/yylineno etc. def's & init go here */
+/* Begin user sect3 */
+
+#define netconf_wrap() (/*CONSTCOND*/1)
+#define YY_SKIP_YYWRAP
+
+#define FLEX_DEBUG
+typedef flex_uint8_t YY_CHAR;
+
+FILE *yyin = NULL, *yyout = NULL;
+
+typedef int yy_state_type;
+
+extern int yylineno;
+int yylineno = 1;
+
+extern char *yytext;
+#ifdef yytext_ptr
+#undef yytext_ptr
+#endif
+#define yytext_ptr yytext
+
+/* %% [1.5] DFA */
+
+/* %if-c-only Standard (non-C++) definition */
+
+static yy_state_type yy_get_previous_state ( void );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state  );
+static int yy_get_next_buffer ( void );
+static void yynoreturn yy_fatal_error ( const char* msg  );
+
+/* %endif */
+
+/* Done after the current pattern has been matched and before the
+ * corresponding action - sets up yytext.
+ */
+#define YY_DO_BEFORE_ACTION \
+	(yytext_ptr) = yy_bp; \
+/* %% [2.0] code to fiddle yytext and yyleng for yymore() goes here \ */\
+	yyleng = (int) (yy_cp - yy_bp); \
+	(yy_hold_char) = *yy_cp; \
+	*yy_cp = '\0'; \
+/* %% [3.0] code to copy yytext_ptr to yytext[] goes here, if %array \ */\
+	(yy_c_buf_p) = yy_cp;
+/* %% [4.0] data tables for the DFA and the user's section 1 definitions go here */
+#define YY_NUM_RULES 63
+#define YY_END_OF_BUFFER 64
+/* This struct is not used in this scanner,
+   but its presence is necessary. */
+struct yy_trans_info
+	{
+	flex_int32_t yy_verify;
+	flex_int32_t yy_nxt;
+	};
+static const flex_int16_t yy_accept[362] =
+    {   0,
+       56,   56,    0,    0,    0,    0,    0,    0,    0,    0,
+       64,   62,   10,   11,   62,    1,   56,   53,   56,   56,
+       62,   55,   54,   62,   62,   62,   62,   62,   49,   50,
+       62,   62,   62,   51,   52,    5,    5,    5,   62,   62,
+       62,   10,   11,    0,    0,   44,    0,    0,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    1,   56,   56,    0,   55,   56,    3,    2,    6,
+        0,   56,    0,    0,    0,    0,    0,    0,    4,    0,
+        0,    9,    0,   45,    0,    0,    0,   47,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    2,    0,    0,    0,    0,    0,    0,    0,
+        8,    0,    0,   46,   48,    0,    0,   22,    0,    0,
+       21,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    0,   61,   59,    0,   58,   57,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    0,    0,   60,   57,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,   26,
+
+        0,    0,    0,    0,    0,    0,   35,    0,    0,    0,
+        0,    0,    0,    0,   25,    0,    0,    0,    0,    0,
+        0,    0,    0,   19,   20,   38,    0,    0,    0,    0,
+        0,    0,   23,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    7,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    0,   40,   37,    0,    0,    0,    0,    0,
+       27,    0,    0,    0,   12,    0,   14,    0,    0,    0,
+       32,   34,    0,   39,    0,    0,   41,    0,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,   43,    0,    0,    0,    0,    0,    0,    0,    0,
+
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    0,   42,    0,    0,    0,   33,    0,    0,
+       30,    0,    0,    0,   15,    0,    0,    0,    0,   29,
+       28,    0,    0,    0,    0,    0,    0,    0,    0,   13,
+        0,    0,    0,    0,    0,    0,    0,   24,    0,    0,
+       36,    0,    0,   31,   18,    0,    0,    0,   17,   16,
+        0
+    } ;
+
+static const YY_CHAR yy_ec[256] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
+        1,    1,    2,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    4,    5,    6,    7,    5,    5,    5,    5,    5,
+        5,    8,    9,   10,   11,   12,   13,   14,   14,   15,
+       14,   16,   14,   17,   14,   14,   14,   18,    5,   19,
+        5,   20,   21,    5,   22,   23,   23,   23,   24,   25,
+        5,    5,    5,    5,    5,   26,    5,   27,    5,    5,
+        5,   28,   29,   30,   31,    5,    5,    5,    5,    5,
+       32,   33,   34,    5,   35,    5,   36,   37,   38,   39,
+
+       40,   41,   42,   43,   44,    5,   45,   46,   47,   48,
+       49,   50,    5,   51,   52,   53,   54,   55,    5,   56,
+       57,   58,   59,    5,   60,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,    5
+    } ;
+
+static const YY_CHAR yy_meta[61] =
+    {   0,
+        1,    1,    2,    1,    1,    3,    1,    1,    1,    1,
+        1,    1,    4,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    4,    1,    1,    1,    4,    1,    1,    1,
+        4,    1,    1,    1,    1,    1,    1,    4,    1,    1,
+        4,    1,    4,    4,    1,    1,    1,    1,    1,    1
+    } ;
+
+static const flex_int16_t yy_base[371] =
+    {   0,
+        0,    0,   59,   62,   65,    0,   63,   67,   47,   64,
+      286, 2435,   84,  259,  125,    0,  105, 2435,  120,  125,
+       85,  169, 2435,  238,  139,   65,   69,   82, 2435, 2435,
+       80,   84,  118, 2435, 2435, 2435,   92,  205,  168,    0,
+      193,  110,  205,   97,  186, 2435,  193,  184,  201,  209,
+      221,  238,  245,  264,  254,  271,  279,  290,  299,  308,
+      314,    0,  314,  347,  358,  364,  368, 2435,    0, 2435,
+      214,  320,  121,  152,  128,  174,  217,  160, 2435,  168,
+      199, 2435,  137, 2435,    0,  388,  195,  394,  436,  400,
+      410,  422,  429,  462,  477,  483,  490,  499,  505,  511,
+
+      518,  524,  544,  553,  559,  566,  578,  587,  594,  601,
+      616,  622,    0,  223,  223,  255,  224,  242,  259,  130,
+     2435,  634,  155, 2435, 2435,  659,  656, 2435,  645,  684,
+     2435,  700,  709,  717,  723,  729,  737,  743,  771,  780,
+      788,  794,  800,  808,  814,  823,  836,  851,  858,  869,
+      876,  884,  282, 2435, 2435,  300, 2435, 2435,  103,  891,
+      927,  902,  913,  928,  953,  968,  974,  986,  996, 1003,
+     1009, 1019, 1025, 1031, 1042, 1053, 1064, 1075, 1081, 1090,
+     1097, 1103, 1109, 1123, 1132, 1143, 2435, 2435,  112, 1152,
+     1187, 1160, 1172, 1166, 1185, 1231, 1237, 1243, 1249, 2435,
+
+     1255, 1265, 1271, 1277, 1288, 1294, 2435, 1311, 1317, 1323,
+     1335, 1345, 1352, 1359, 2435, 1369, 1380,   64, 1387, 1393,
+     1416, 1428, 1435, 2435, 2435, 2435, 1444, 1450, 1456, 1464,
+     1478, 1490, 2435, 1498, 1511, 1518, 1524, 1534, 1540, 1546,
+     1552, 1559, 2435, 1569, 1580, 1592, 1603, 1614, 1620, 1626,
+     1632, 1638, 1649, 2435, 2435, 1655, 1672, 1678, 1684, 1690,
+     2435, 1696, 1707, 1713, 2435, 1724, 2435, 1733, 1746, 1761,
+     2435, 2435, 1767, 2435, 1774, 1781, 2435, 1787, 1800, 1807,
+     1815, 1825, 1836, 1843, 1849, 1871, 1877, 1884, 1891, 1897,
+     1905, 2435, 1912, 1931, 1938, 1945, 1952, 1960, 1966, 1974,
+
+     1985, 1994, 2002, 2008, 2014, 2022, 2030, 2036, 2042, 2048,
+     2055, 2070, 2076, 2435, 2083, 2089, 2099, 2435, 2105, 2112,
+     2435, 2122, 2134, 2140, 2435, 2148, 2156, 2168, 2176, 2435,
+     2435, 2189, 2196, 2204, 2210, 2217, 2225, 2232, 2238, 2435,
+     2245, 2258, 2266, 2279, 2287, 2294, 2300, 2435, 2308, 2320,
+     2435, 2336, 2342, 2435, 2435, 2348, 2354, 2360, 2435, 2435,
+     2435, 2400, 2404, 2408, 2412, 2416, 2420, 2424, 2426, 2430
+    } ;
+
+static const flex_int16_t yy_def[371] =
+    {   0,
+      361,    1,  362,  362,    1,    5,    5,    5,    5,    5,
+      361,  361,  361,  361,  363,  364,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  365,
+      361,  361,  361,  366,  363,  361,  363,  367,  363,  363,
+      363,  363,  363,  363,  363,  363,  363,  363,  363,  363,
+      363,  364,  361,  361,  361,  361,  361,  361,  368,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      365,  361,  366,  361,  369,  363,  370,  363,  367,  363,
+      363,  363,  363,  363,  363,  363,  363,  363,  363,  363,
+
+      363,  363,  363,  363,  363,  363,  363,  363,  363,  363,
+      363,  363,  368,  361,  361,  361,  361,  361,  361,  361,
+      361,  363,  370,  361,  361,   89,  363,  361,  363,  363,
+      361,  363,  363,  363,  363,  363,  363,  363,  363,  363,
+      363,  363,  363,  363,  363,  363,  363,  363,  363,  363,
+      363,  363,  361,  361,  361,  361,  361,  361,  361,  363,
+       89,  363,  363,  363,  363,  363,  363,  363,  363,  363,
+      363,  363,  363,  363,  363,  363,  363,  363,  363,  363,
+      363,  363,  363,  363,  363,  363,  361,  361,  361,  363,
+       89,  363,  363,  363,  363,  363,  363,  363,  363,  361,
+
+      363,  363,  363,  363,  363,  363,  361,  363,  363,  363,
+      363,  363,  363,  363,  361,  363,  363,  361,  363,  363,
+      363,  363,  363,  361,  361,  361,  363,  363,  363,  363,
+      363,  363,  361,  363,  363,  363,  363,  363,  363,  363,
+      363,  363,  361,  363,  363,  363,  363,  363,  363,  363,
+      363,  363,  363,  361,  361,  363,  363,  363,  363,  363,
+      361,  363,  363,  363,  361,  363,  361,  363,  363,  363,
+      361,  361,  363,  361,  363,  363,  361,  363,  363,  363,
+      363,  363,  363,  363,  363,  363,  363,  363,  363,  363,
+      363,  361,  363,  363,  363,  363,  363,  363,  363,  363,
+
+      363,  363,  363,  363,  363,  363,  363,  363,  363,  363,
+      363,  363,  363,  361,  363,  363,  363,  361,  363,  363,
+      361,  363,  363,  363,  361,  363,  363,  363,  363,  361,
+      361,  363,  363,  363,  363,  363,  363,  363,  363,  361,
+      363,  363,  363,  363,  363,  363,  363,  361,  363,  363,
+      361,  363,  363,  361,  361,  363,  363,  363,  361,  361,
+        0,  361,  361,  361,  361,  361,  361,  361,  361,  361
+    } ;
+
+static const flex_int16_t yy_nxt[2496] =
+    {   0,
+       12,   13,   14,   13,   12,   15,   16,   12,   17,   18,
+       19,   20,   21,   22,   22,   22,   22,   23,   24,   12,
+       12,   12,   12,   25,   26,   12,   27,   12,   12,   28,
+       12,   29,   12,   30,   12,   12,   12,   12,   12,   25,
+       31,   12,   12,   12,   12,   12,   12,   32,   12,   12,
+       12,   12,   33,   12,   12,   12,   12,   12,   34,   35,
+       37,   14,   37,   37,   14,   37,   38,   41,   40,   38,
+       12,   12,   40,   12,   12,   12,   12,   12,   12,   12,
+       12,   12,   12,   12,   41,   42,   73,   42,   12,   12,
+       12,   12,   68,   42,   12,   42,   12,   69,   12,   74,
+
+       73,   73,   84,  243,   12,   12,   12,   12,   39,   75,
+       12,   42,   12,   42,   74,   76,   63,   12,   64,   64,
+       64,   64,   74,   12,   12,   44,   44,   44,   65,   85,
+       46,   63,   75,   66,   66,   66,   66,   77,   67,   67,
+       67,   67,   84,   65,   65,   75,  114,   71,   65,   71,
+      218,   47,   72,   72,   72,   72,  189,   48,  116,   65,
+      124,   49,   50,   51,   65,   52,  114,   53,   78,   85,
+       54,   55,   56,   57,   58,  159,   59,  115,   60,   61,
+       63,  116,   66,   66,   66,   66,   44,   44,   44,   88,
+      116,   46,   65,   44,   44,   44,   45,  115,   46,  114,
+
+      124,   44,   44,   44,  121,  120,   46,   43,   65,   44,
+       44,   44,   82,  119,   46,   80,   45,   79,   48,  117,
+       45,   44,   44,   44,   45,   48,   46,   72,   72,   72,
+       72,   45,   86,   48,   45,   93,   45,   89,   44,   44,
+       44,   48,  115,   46,   91,   44,   44,   44,  154,   90,
+       46,  153,  153,   48,   44,   44,   44,   92,   70,   46,
+       94,   43,  118,   95,   44,   44,   44,  154,  154,   46,
+       48,   44,   44,   44,  153,  156,   46,   48,  155,   44,
+       44,   44,  155,   96,   46,  361,   48,  157,  361,  101,
+       44,   44,   44,   97,  155,   46,   48,   98,  158,   44,
+
+       44,   44,  102,   48,   46,  187,  103,   99,   44,   44,
+       44,   48,  100,   46,   44,   44,   44,  361,  361,   46,
+      361,  187,   48,  187,  361,  105,  361,   67,   67,   67,
+       67,   48,  104,   72,   72,   72,   72,   65,  106,  188,
+       48,  361,  361,  361,  361,  361,   48,  107,  361,  112,
+      361,  108,  109,   65,  361,  110,  361,  361,   63,  111,
+       64,   64,   64,   64,  361,  361,   71,  361,   71,  361,
+       65,   72,   72,   72,   72,   63,  361,   66,   66,   66,
+       66,   67,   67,   67,   67,  361,   65,   65,   44,   44,
+       44,   65,  361,   46,   44,   44,   44,  361,  361,   46,
+
+       44,   44,   44,   65,  361,   46,  361,   65,  361,  361,
+       44,   44,   44,  361,  361,  128,  361,  361,  361,  361,
+       48,  361,   44,   44,   44,  361,   48,   46,  361,   44,
+       44,   44,   48,  361,  131,  361,  361,  361,  361,  361,
+      122,  125,   48,  361,  361,  361,  361,  361,  127,  126,
+      126,  126,  126,  361,   48,  361,  361,  126,  126,  126,
+      126,   48,   44,   44,   44,  361,  361,   46,  129,  130,
+      361,  126,  126,  126,  126,  126,  126,   44,   44,   44,
+      361,  361,   46,   44,   44,   44,  361,  361,   46,  361,
+       44,   44,   44,  361,   48,   46,  361,  361,  132,   44,
+
+       44,   44,  361,  361,   46,   44,   44,   44,  361,   48,
+       46,   44,   44,   44,  133,   48,   46,  361,   44,   44,
+       44,  361,   48,   46,   44,   44,   44,  361,  361,   46,
+      361,   48,  361,  361,  361,  361,  134,   48,  135,  361,
+      361,  137,  361,   48,   44,   44,   44,  361,  361,   46,
+       48,  136,  138,   44,   44,   44,   48,  361,   46,   44,
+       44,   44,  141,  361,   46,  139,   44,   44,   44,  361,
+      361,   46,  361,  140,  361,  361,   48,  361,   44,   44,
+       44,  361,  361,   46,  361,   48,  361,   44,   44,   44,
+      142,   48,   46,  361,   44,   44,   44,  361,   48,   46,
+
+      361,   44,   44,   44,  361,  143,   46,  361,  361,  144,
+       48,  145,  361,  361,  361,  147,   44,   44,   44,   48,
+      146,   46,   44,   44,   44,  148,   48,   46,  361,  361,
+      149,  361,  361,   48,   44,   44,   44,  361,  361,   46,
+      361,  361,  361,  361,  150,   44,   44,   44,   48,  361,
+       46,  361,  361,  361,   48,  151,   44,   44,   44,  361,
+      361,   46,  361,  361,  361,  361,   48,  152,  361,  361,
+      361,  160,  161,  161,  161,  161,  361,   48,  361,  361,
+      161,  161,  161,  161,   44,   44,   44,  361,   48,   46,
+      361,  163,  361,  361,  161,  161,  161,  161,  161,  161,
+
+       44,   44,   44,  361,  361,   46,  361,  361,  162,   44,
+       44,   44,  361,  361,   46,  361,   48,   44,   44,   44,
+      361,  361,   46,   44,   44,   44,  361,  361,   46,   44,
+       44,   44,   48,  361,   46,  361,  164,   44,   44,   44,
+      361,   48,   46,   44,   44,   44,  361,  361,   46,   48,
+      361,  361,  361,  165,  361,   48,  361,  361,  166,  361,
+      361,   48,  361,  361,  361,  361,  361,  168,  167,   48,
+      361,   44,   44,   44,  361,   48,   46,  361,  169,  361,
+       44,   44,   44,  361,  171,   46,  361,  170,   44,   44,
+       44,  361,  361,   46,   44,   44,   44,  361,  361,   46,
+
+       44,   44,   44,   48,  361,   46,  172,  361,   44,   44,
+       44,  361,   48,   46,   44,   44,   44,  361,  361,   46,
+       48,  361,  361,   44,   44,   44,   48,  175,   46,  361,
+      361,  173,   48,  176,  174,  361,   44,   44,   44,  361,
+       48,   46,  361,  178,  361,  361,   48,  361,  361,  177,
+      361,   44,   44,   44,  361,   48,   46,  361,   44,   44,
+       44,  361,  180,   46,  361,  361,  179,  361,   48,   44,
+       44,   44,  361,  361,   46,  361,   44,   44,   44,  361,
+      181,   46,  361,   48,   44,   44,   44,  361,  361,   46,
+       48,   44,   44,   44,  361,  361,   46,  361,  361,  182,
+
+      361,   48,   44,   44,   44,  361,  361,   46,   48,  183,
+      361,  361,  192,   44,   44,   44,   48,  361,   46,  361,
+      361,  361,  361,   48,  184,  361,  185,  186,   44,   44,
+       44,  361,  361,   46,   48,  361,  361,  361,  361,  190,
+      191,  191,  191,  191,  361,   48,  361,  361,  191,  191,
+      191,  191,  193,   44,   44,   44,  361,  361,   46,  361,
+       48,  361,  191,  191,  191,  191,  191,  191,   44,   44,
+       44,  361,  361,   46,   44,   44,   44,  361,  194,   46,
+      361,  361,  361,  196,  197,   48,   44,   44,   44,  361,
+      361,   46,  361,  361,  195,  361,   44,   44,   44,  361,
+
+       48,  200,  361,   44,   44,   44,   48,  361,   46,   44,
+       44,   44,  361,  361,   46,  361,  198,  361,   48,   44,
+       44,   44,  361,  361,   46,   44,   44,   44,   48,  361,
+       46,   44,   44,   44,  361,   48,   46,  199,  201,  361,
+      361,   48,   44,   44,   44,  361,  361,   46,  202,  361,
+      361,   48,  361,   44,   44,   44,  361,   48,  207,  361,
+      203,  361,  361,   48,   44,   44,   44,  361,  204,   46,
+      205,  361,  361,  361,   48,   44,   44,   44,  361,  361,
+       46,   44,   44,   44,  361,   48,   46,  206,  361,  361,
+       44,   44,   44,  361,  361,   46,   48,   44,   44,   44,
+
+      361,  361,   46,   44,   44,   44,  361,   48,   46,   44,
+       44,   44,  361,   48,   46,  361,  361,  208,  361,  361,
+      210,  209,   48,   44,   44,   44,  361,  361,  215,   48,
+      361,  361,   44,   44,   44,   48,  212,   46,  361,  361,
+      211,   48,  216,   44,   44,   44,  214,  361,   46,  361,
+      361,  361,   44,   44,   44,   48,  213,   46,  361,  361,
+       44,   44,   44,  361,   48,   46,   44,   44,   44,  361,
+      361,   46,   44,   44,   44,   48,  361,   46,  361,  361,
+      361,  217,  361,  361,   48,   44,   44,   44,  361,  361,
+       46,  361,   48,  361,  361,  361,  361,  361,   48,  219,
+
+       45,   45,   45,   45,   48,  361,  361,  361,   45,   45,
+       45,   45,  361,  220,  222,  361,  361,   48,  361,  221,
+      361,  361,   45,   45,   45,   45,   45,   45,  361,  361,
+      223,   44,   44,   44,  361,  361,  224,   44,   44,   44,
+      361,  361,  225,   44,   44,   44,  361,  361,  226,   44,
+       44,   44,  361,  361,   46,   44,   44,   44,  361,  227,
+       46,  361,  361,   48,  361,   44,   44,   44,  361,   48,
+       46,   44,   44,   44,  361,   48,   46,   44,   44,   44,
+      361,   48,   46,  361,  361,  361,  361,   48,   44,   44,
+       44,  361,  361,   46,   44,   44,   44,   48,  361,  233,
+
+      361,  361,  361,   48,  361,  228,  361,  361,  361,   48,
+      230,   44,   44,   44,  361,  229,   46,   44,   44,   44,
+       48,  361,   46,   44,   44,   44,   48,  361,   46,  361,
+      361,  361,  361,  361,  231,   44,   44,   44,  232,  361,
+       46,  361,  361,   48,  361,   44,   44,   44,  361,   48,
+       46,  361,   44,   44,   44,   48,  235,   46,  361,   44,
+       44,   44,  361,  234,   46,  361,  361,   48,  361,   44,
+       44,   44,  361,  236,   46,  361,  361,   48,  237,  361,
+       44,   44,   44,  361,   48,   46,  361,   44,   44,   44,
+      361,   48,   46,   44,   44,   44,  361,  238,   46,  361,
+
+      361,   48,  361,  361,  239,  361,  241,  361,  361,  240,
+      361,  361,   48,  361,  361,  242,   44,   44,   44,   48,
+      361,   46,  361,  361,  361,   48,  361,  244,   44,   44,
+       44,  361,  361,   46,  361,   44,   44,   44,  361,  361,
+       46,  361,  245,  361,   44,   44,   44,  361,   48,   46,
+       44,   44,   44,  361,  361,   46,   44,   44,   44,  361,
+       48,   46,  361,  361,   44,   44,   44,   48,  246,   46,
+      361,  361,  361,  247,  248,  361,   48,  361,   44,   44,
+       44,  361,   48,   46,  361,  361,  361,  361,   48,  249,
+       44,   44,   44,  361,  361,  254,   48,  361,   44,   44,
+
+       44,  361,  252,  255,  361,  361,  250,  251,  361,  361,
+       48,   44,   44,   44,  361,  361,   46,  253,   44,   44,
+       44,  361,   48,   46,   44,   44,   44,  361,  361,   46,
+       48,  361,  256,  361,   44,   44,   44,  361,  361,   46,
+       44,   44,   44,   48,  260,  261,   44,   44,   44,  361,
+       48,   46,   44,   44,   44,  361,   48,   46,  361,   44,
+       44,   44,  361,  257,   46,  258,   48,  361,  361,   44,
+       44,   44,   48,  361,  265,  361,  259,  361,   48,  361,
+       44,   44,   44,  361,   48,   46,  361,  361,  361,  262,
+      361,   48,   44,   44,   44,  361,  361,  267,  361,  361,
+
+      263,   48,  361,   44,   44,   44,  361,  361,   46,  361,
+      361,  264,   48,  268,   44,   44,   44,  361,  266,   46,
+       44,   44,   44,  361,   48,   46,   44,   44,   44,  361,
+      361,  271,   44,   44,   44,   48,  361,  272,   44,   44,
+       44,  361,  361,   46,  361,  361,   48,  361,  273,   44,
+       44,   44,   48,  361,  274,   44,   44,   44,   48,  361,
+       46,  361,  361,  270,   48,  361,  361,  361,  269,  361,
+       48,  361,   44,   44,   44,  361,  361,   46,   44,   44,
+       44,   48,  361,  277,   44,   44,   44,   48,  361,   46,
+       44,   44,   44,  361,  361,   46,   44,   44,   44,  361,
+
+      361,   46,  361,  275,   48,  361,  361,   44,   44,   44,
+       48,  276,   46,   44,   44,   44,   48,  361,   46,  361,
+      361,  361,   48,  361,   44,   44,   44,  361,   48,   46,
+      361,  361,  282,   44,   44,   44,  361,  279,   46,   48,
+      278,  361,  280,  281,  361,   48,   44,   44,   44,  361,
+      361,   46,  284,  361,  283,  361,   48,  361,  361,  285,
+      361,   44,   44,   44,  361,   48,   46,   44,   44,   44,
+      361,  361,   46,  361,   44,   44,   44,  361,   48,   46,
+      361,   44,   44,   44,  286,  287,   46,   44,   44,   44,
+      361,  361,  292,   48,  361,  361,  361,  288,  361,   48,
+
+       44,   44,   44,  361,  361,   46,   48,   44,   44,   44,
+      361,  361,   46,   48,  361,   44,   44,   44,  289,   48,
+       46,  361,  361,  290,  361,   44,   44,   44,  361,  361,
+       46,  291,   48,  361,  361,  293,   44,   44,   44,   48,
+      361,   46,  361,   44,   44,   44,  361,   48,   46,   44,
+       44,   44,  361,  298,   46,  361,  361,   48,  361,  361,
+      361,  361,  361,  294,  296,  295,  361,  361,   48,  361,
+      361,   44,   44,   44,  361,   48,   46,   44,   44,   44,
+      361,   48,   46,  361,   44,   44,   44,  361,  297,   46,
+      361,   44,   44,   44,  361,  361,   46,   44,   44,   44,
+
+      361,  299,   46,   48,  361,   44,   44,   44,  361,   48,
+       46,  361,   44,   44,   44,  361,   48,   46,  361,  300,
+      361,  361,  301,   48,  361,  361,  361,  361,  361,   48,
+      303,   44,   44,   44,  302,  361,   46,   48,   44,   44,
+       44,  361,  361,   46,   48,   44,   44,   44,  361,  304,
+       46,  361,   44,   44,   44,  309,  305,   46,  306,  361,
+       44,   44,   44,   48,  361,   46,   44,   44,   44,  361,
+       48,   46,  361,  361,   44,   44,   44,   48,  361,   46,
+      307,  361,  361,  308,   48,   44,   44,   44,  361,  361,
+      314,  310,   48,  361,   44,   44,   44,  311,   48,   46,
+
+      361,  361,   44,   44,   44,  312,   48,   46,   44,   44,
+       44,  313,  361,   46,   44,   44,   44,   48,  361,  318,
+      361,  361,   44,   44,   44,  361,   48,   46,  361,  315,
+       44,   44,   44,  361,   48,   46,   44,   44,   44,  361,
+       48,  321,   44,   44,   44,  361,   48,   46,   44,   44,
+       44,  317,  316,   46,   48,   44,   44,   44,  361,  361,
+       46,  319,   48,  361,  361,  361,  361,  361,   48,  320,
+       44,   44,   44,  361,   48,  325,   44,   44,   44,  322,
+       48,   46,  361,   44,   44,   44,  361,   48,   46,   44,
+       44,   44,  361,  361,   46,  361,  361,  324,  361,   44,
+
+       44,   44,   48,  323,   46,   44,   44,   44,   48,  361,
+      330,  361,   44,   44,   44,   48,  361,  331,  361,  361,
+      326,   48,   44,   44,   44,  361,  361,   46,  361,  361,
+      361,   48,  361,  327,   44,   44,   44,   48,  361,   46,
+       44,   44,   44,  328,   48,   46,  361,  329,   44,   44,
+       44,  361,  361,   46,   48,  361,   44,   44,   44,  361,
+      361,   46,  361,  361,  332,  361,   48,  361,   44,   44,
+       44,  361,   48,   46,  361,  334,   44,   44,   44,  361,
+       48,   46,  361,  361,  361,  361,  333,  335,   48,   44,
+       44,   44,  361,  361,   46,  361,   44,   44,   44,  336,
+
+       48,  340,  361,  361,   44,   44,   44,  337,   48,   46,
+       44,   44,   44,  361,  361,   46,  361,   44,   44,   44,
+      361,   48,   46,  338,  339,   44,   44,   44,   48,  361,
+       46,  361,   44,   44,   44,  361,   48,   46,   44,   44,
+       44,  361,   48,   46,  361,   44,   44,   44,  361,   48,
+       46,  341,  361,  361,  361,  361,  343,   48,   44,   44,
+       44,  361,  342,  348,   48,  361,   44,   44,   44,  361,
+       48,   46,  361,  361,  361,  344,  361,   48,  361,   44,
+       44,   44,  361,  345,   46,  346,  347,   44,   44,   44,
+       48,  361,  351,  361,   44,   44,   44,  361,   48,   46,
+
+       44,   44,   44,  361,  361,   46,  361,  361,   44,   44,
+       44,   48,  361,  354,  361,  361,  361,  349,  361,   48,
+       44,   44,   44,  361,  361,  355,   48,  361,  361,  361,
+      350,  361,   48,  361,  361,  352,   44,   44,   44,  353,
+       48,   46,   44,   44,   44,  361,  361,   46,   44,   44,
+       44,  361,   48,   46,   44,   44,   44,  361,  361,  359,
+       44,   44,   44,  361,  361,  360,  361,  361,   48,  361,
+      361,  361,  361,  361,   48,  356,  361,  361,  361,  361,
+       48,  361,  361,  361,  361,  361,   48,  361,  361,  361,
+      361,  361,   48,  357,  361,  361,  361,  361,  361,  358,
+
+       36,   36,   36,   36,   45,   45,   45,   45,   62,  361,
+       62,   62,   81,  361,  361,   81,   83,   83,   83,   83,
+       87,   87,   87,   87,  113,  361,  113,  113,   83,   83,
+      123,  123,  123,  123,   11,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361
+
+    } ;
+
+static const flex_int16_t yy_chk[2496] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        3,    3,    3,    4,    4,    4,    3,    9,    7,    4,
+        5,    5,    8,    5,    5,    5,    5,    5,    5,    5,
+        5,    5,    5,    5,   10,   13,   26,   13,    5,    5,
+        9,    5,   21,   37,    5,   37,    5,   21,    5,   27,
+
+       26,   31,   44,  218,    5,    5,    7,   10,    5,   28,
+        8,   42,    5,   42,   32,   31,   17,    5,   17,   17,
+       17,   17,   27,    5,    5,   15,   15,   15,   17,   44,
+       15,   19,   28,   19,   19,   19,   19,   32,   20,   20,
+       20,   20,   83,   19,   17,   33,   73,   25,   20,   25,
+      189,   15,   25,   25,   25,   25,  159,   15,   75,   19,
+      123,   15,   15,   15,   20,   15,   73,   15,   33,   83,
+       15,   15,   15,   15,   15,  120,   15,   74,   15,   15,
+       22,   75,   22,   22,   22,   22,   45,   45,   45,   48,
+       78,   45,   22,   47,   47,   47,   48,   74,   47,   76,
+
+       87,   49,   49,   49,   81,   80,   49,   43,   22,   50,
+       50,   50,   41,   78,   50,   39,   48,   38,   45,   76,
+       48,   51,   51,   51,   48,   47,   51,   71,   71,   71,
+       71,   48,   47,   49,   48,   51,   48,   48,   52,   52,
+       52,   50,   77,   52,   50,   53,   53,   53,  115,   49,
+       53,  114,  117,   51,   55,   55,   55,   50,   24,   55,
+       51,   14,   77,   51,   54,   54,   54,  118,  115,   54,
+       52,   56,   56,   56,  114,  117,   56,   53,  116,   57,
+       57,   57,  119,   52,   57,   11,   55,  118,    0,   55,
+       58,   58,   58,   53,  116,   58,   54,   53,  119,   59,
+
+       59,   59,   55,   56,   59,  153,   56,   54,   60,   60,
+       60,   57,   54,   60,   61,   61,   61,    0,    0,   61,
+        0,  153,   58,  156,    0,   58,    0,   63,   63,   63,
+       63,   59,   57,   72,   72,   72,   72,   63,   59,  156,
+       60,    0,    0,    0,    0,    0,   61,   59,    0,   61,
+        0,   59,   59,   63,    0,   60,    0,    0,   64,   60,
+       64,   64,   64,   64,    0,    0,   65,    0,   65,    0,
+       64,   65,   65,   65,   65,   66,    0,   66,   66,   66,
+       66,   67,   67,   67,   67,    0,   64,   66,   86,   86,
+       86,   67,    0,   86,   88,   88,   88,    0,    0,   88,
+
+       90,   90,   90,   66,    0,   90,    0,   67,    0,    0,
+       91,   91,   91,    0,    0,   91,    0,    0,    0,    0,
+       86,    0,   92,   92,   92,    0,   88,   92,    0,   93,
+       93,   93,   90,    0,   93,    0,    0,    0,    0,    0,
+       86,   89,   91,    0,    0,    0,    0,    0,   90,   89,
+       89,   89,   89,    0,   92,    0,    0,   89,   89,   89,
+       89,   93,   94,   94,   94,    0,    0,   94,   92,   92,
+        0,   89,   89,   89,   89,   89,   89,   95,   95,   95,
+        0,    0,   95,   96,   96,   96,    0,    0,   96,    0,
+       97,   97,   97,    0,   94,   97,    0,    0,   94,   98,
+
+       98,   98,    0,    0,   98,   99,   99,   99,    0,   95,
+       99,  100,  100,  100,   95,   96,  100,    0,  101,  101,
+      101,    0,   97,  101,  102,  102,  102,    0,    0,  102,
+        0,   98,    0,    0,    0,    0,   96,   99,   97,    0,
+        0,   99,    0,  100,  103,  103,  103,    0,    0,  103,
+      101,   98,  100,  104,  104,  104,  102,    0,  104,  105,
+      105,  105,  102,    0,  105,  101,  106,  106,  106,    0,
+        0,  106,    0,  101,    0,    0,  103,    0,  107,  107,
+      107,    0,    0,  107,    0,  104,    0,  108,  108,  108,
+      103,  105,  108,    0,  109,  109,  109,    0,  106,  109,
+
+        0,  110,  110,  110,    0,  104,  110,    0,    0,  105,
+      107,  105,    0,    0,    0,  107,  111,  111,  111,  108,
+      106,  111,  112,  112,  112,  108,  109,  112,    0,    0,
+      109,    0,    0,  110,  122,  122,  122,    0,    0,  122,
+        0,    0,    0,    0,  110,  129,  129,  129,  111,    0,
+      129,    0,    0,    0,  112,  111,  127,  127,  127,    0,
+        0,  127,    0,    0,    0,    0,  122,  112,    0,    0,
+        0,  122,  126,  126,  126,  126,    0,  129,    0,    0,
+      126,  126,  126,  126,  130,  130,  130,    0,  127,  130,
+        0,  129,    0,    0,  126,  126,  126,  126,  126,  126,
+
+      132,  132,  132,    0,    0,  132,    0,    0,  127,  133,
+      133,  133,    0,    0,  133,    0,  130,  134,  134,  134,
+        0,    0,  134,  135,  135,  135,    0,    0,  135,  136,
+      136,  136,  132,    0,  136,    0,  130,  137,  137,  137,
+        0,  133,  137,  138,  138,  138,    0,    0,  138,  134,
+        0,    0,    0,  132,    0,  135,    0,    0,  133,    0,
+        0,  136,    0,    0,    0,    0,    0,  135,  134,  137,
+        0,  139,  139,  139,    0,  138,  139,    0,  136,    0,
+      140,  140,  140,    0,  138,  140,    0,  137,  141,  141,
+      141,    0,    0,  141,  142,  142,  142,    0,    0,  142,
+
+      143,  143,  143,  139,    0,  143,  139,    0,  144,  144,
+      144,    0,  140,  144,  145,  145,  145,    0,    0,  145,
+      141,    0,    0,  146,  146,  146,  142,  141,  146,    0,
+        0,  140,  143,  142,  140,    0,  147,  147,  147,    0,
+      144,  147,    0,  144,    0,    0,  145,    0,    0,  143,
+        0,  148,  148,  148,    0,  146,  148,    0,  149,  149,
+      149,    0,  146,  149,    0,    0,  145,    0,  147,  150,
+      150,  150,    0,    0,  150,    0,  151,  151,  151,    0,
+      147,  151,    0,  148,  152,  152,  152,    0,    0,  152,
+      149,  160,  160,  160,    0,    0,  160,    0,    0,  148,
+
+        0,  150,  162,  162,  162,    0,    0,  162,  151,  149,
+        0,    0,  162,  163,  163,  163,  152,    0,  163,    0,
+        0,    0,    0,  160,  150,    0,  151,  152,  164,  164,
+      164,    0,    0,  164,  162,    0,    0,    0,    0,  160,
+      161,  161,  161,  161,    0,  163,    0,    0,  161,  161,
+      161,  161,  163,  165,  165,  165,    0,    0,  165,    0,
+      164,    0,  161,  161,  161,  161,  161,  161,  166,  166,
+      166,    0,    0,  166,  167,  167,  167,    0,  164,  167,
+        0,    0,    0,  166,  166,  165,  168,  168,  168,    0,
+        0,  168,    0,    0,  165,    0,  169,  169,  169,    0,
+
+      166,  169,    0,  170,  170,  170,  167,    0,  170,  171,
+      171,  171,    0,    0,  171,    0,  167,    0,  168,  172,
+      172,  172,    0,    0,  172,  173,  173,  173,  169,    0,
+      173,  174,  174,  174,    0,  170,  174,  168,  170,    0,
+        0,  171,  175,  175,  175,    0,    0,  175,  171,    0,
+        0,  172,    0,  176,  176,  176,    0,  173,  176,    0,
+      172,    0,    0,  174,  177,  177,  177,    0,  173,  177,
+      174,    0,    0,    0,  175,  178,  178,  178,    0,    0,
+      178,  179,  179,  179,    0,  176,  179,  175,    0,    0,
+      180,  180,  180,    0,    0,  180,  177,  181,  181,  181,
+
+        0,    0,  181,  182,  182,  182,    0,  178,  182,  183,
+      183,  183,    0,  179,  183,    0,    0,  177,    0,    0,
+      179,  178,  180,  184,  184,  184,    0,    0,  184,  181,
+        0,    0,  185,  185,  185,  182,  181,  185,    0,    0,
+      180,  183,  185,  186,  186,  186,  183,    0,  186,    0,
+        0,    0,  190,  190,  190,  184,  182,  190,    0,    0,
+      192,  192,  192,    0,  185,  192,  194,  194,  194,    0,
+        0,  194,  193,  193,  193,  186,    0,  193,    0,    0,
+        0,  186,    0,    0,  190,  195,  195,  195,    0,    0,
+      195,    0,  192,    0,    0,    0,    0,    0,  194,  190,
+
+      191,  191,  191,  191,  193,    0,    0,    0,  191,  191,
+      191,  191,    0,  192,  194,    0,    0,  195,    0,  193,
+        0,    0,  191,  191,  191,  191,  191,  191,    0,    0,
+      195,  196,  196,  196,    0,    0,  196,  197,  197,  197,
+        0,    0,  197,  198,  198,  198,    0,    0,  198,  199,
+      199,  199,    0,    0,  199,  201,  201,  201,    0,  199,
+      201,    0,    0,  196,    0,  202,  202,  202,    0,  197,
+      202,  203,  203,  203,    0,  198,  203,  204,  204,  204,
+        0,  199,  204,    0,    0,    0,    0,  201,  205,  205,
+      205,    0,    0,  205,  206,  206,  206,  202,    0,  206,
+
+        0,    0,    0,  203,    0,  201,    0,    0,    0,  204,
+      203,  208,  208,  208,    0,  202,  208,  209,  209,  209,
+      205,    0,  209,  210,  210,  210,  206,    0,  210,    0,
+        0,    0,    0,    0,  204,  211,  211,  211,  205,    0,
+      211,    0,    0,  208,    0,  212,  212,  212,    0,  209,
+      212,    0,  213,  213,  213,  210,  209,  213,    0,  214,
+      214,  214,    0,  208,  214,    0,    0,  211,    0,  216,
+      216,  216,    0,  210,  216,    0,    0,  212,  211,    0,
+      217,  217,  217,    0,  213,  217,    0,  219,  219,  219,
+        0,  214,  219,  220,  220,  220,    0,  212,  220,    0,
+
+        0,  216,    0,    0,  213,    0,  216,    0,    0,  214,
+        0,    0,  217,    0,    0,  217,  221,  221,  221,  219,
+        0,  221,    0,    0,    0,  220,    0,  219,  222,  222,
+      222,    0,    0,  222,    0,  223,  223,  223,    0,    0,
+      223,    0,  220,    0,  227,  227,  227,    0,  221,  227,
+      228,  228,  228,    0,    0,  228,  229,  229,  229,    0,
+      222,  229,    0,    0,  230,  230,  230,  223,  221,  230,
+        0,    0,    0,  222,  223,    0,  227,    0,  231,  231,
+      231,    0,  228,  231,    0,    0,    0,    0,  229,  227,
+      232,  232,  232,    0,    0,  232,  230,    0,  234,  234,
+
+      234,    0,  230,  234,    0,    0,  228,  229,    0,    0,
+      231,  235,  235,  235,    0,    0,  235,  231,  236,  236,
+      236,    0,  232,  236,  237,  237,  237,    0,    0,  237,
+      234,    0,  234,    0,  238,  238,  238,    0,    0,  238,
+      239,  239,  239,  235,  238,  239,  240,  240,  240,    0,
+      236,  240,  241,  241,  241,    0,  237,  241,    0,  242,
+      242,  242,    0,  235,  242,  236,  238,    0,    0,  244,
+      244,  244,  239,    0,  244,    0,  237,    0,  240,    0,
+      245,  245,  245,    0,  241,  245,    0,    0,    0,  240,
+        0,  242,  246,  246,  246,    0,    0,  246,    0,    0,
+
+      241,  244,    0,  247,  247,  247,    0,    0,  247,    0,
+        0,  242,  245,  247,  248,  248,  248,    0,  245,  248,
+      249,  249,  249,    0,  246,  249,  250,  250,  250,    0,
+        0,  250,  251,  251,  251,  247,    0,  251,  252,  252,
+      252,    0,    0,  252,    0,    0,  248,    0,  252,  253,
+      253,  253,  249,    0,  253,  256,  256,  256,  250,    0,
+      256,    0,    0,  249,  251,    0,    0,    0,  248,    0,
+      252,    0,  257,  257,  257,    0,    0,  257,  258,  258,
+      258,  253,    0,  258,  259,  259,  259,  256,    0,  259,
+      260,  260,  260,    0,    0,  260,  262,  262,  262,    0,
+
+        0,  262,    0,  256,  257,    0,    0,  263,  263,  263,
+      258,  257,  263,  264,  264,  264,  259,    0,  264,    0,
+        0,    0,  260,    0,  266,  266,  266,    0,  262,  266,
+        0,    0,  262,  268,  268,  268,    0,  260,  268,  263,
+      259,    0,  260,  260,    0,  264,  269,  269,  269,    0,
+        0,  269,  264,    0,  263,    0,  266,    0,    0,  266,
+        0,  270,  270,  270,    0,  268,  270,  273,  273,  273,
+        0,    0,  273,    0,  275,  275,  275,    0,  269,  275,
+        0,  276,  276,  276,  268,  269,  276,  278,  278,  278,
+        0,    0,  278,  270,    0,    0,    0,  270,    0,  273,
+
+      279,  279,  279,    0,    0,  279,  275,  280,  280,  280,
+        0,    0,  280,  276,    0,  281,  281,  281,  273,  278,
+      281,    0,    0,  275,    0,  282,  282,  282,    0,    0,
+      282,  276,  279,    0,    0,  279,  283,  283,  283,  280,
+        0,  283,    0,  284,  284,  284,    0,  281,  284,  285,
+      285,  285,    0,  284,  285,    0,    0,  282,    0,    0,
+        0,    0,    0,  280,  282,  281,    0,    0,  283,    0,
+        0,  286,  286,  286,    0,  284,  286,  287,  287,  287,
+        0,  285,  287,    0,  288,  288,  288,    0,  283,  288,
+        0,  289,  289,  289,    0,    0,  289,  290,  290,  290,
+
+        0,  285,  290,  286,    0,  291,  291,  291,    0,  287,
+      291,    0,  293,  293,  293,    0,  288,  293,    0,  286,
+        0,    0,  287,  289,    0,    0,    0,    0,    0,  290,
+      289,  294,  294,  294,  288,    0,  294,  291,  295,  295,
+      295,    0,    0,  295,  293,  296,  296,  296,    0,  290,
+      296,    0,  297,  297,  297,  296,  291,  297,  293,    0,
+      298,  298,  298,  294,    0,  298,  299,  299,  299,    0,
+      295,  299,    0,    0,  300,  300,  300,  296,    0,  300,
+      294,    0,    0,  295,  297,  301,  301,  301,    0,    0,
+      301,  297,  298,    0,  302,  302,  302,  298,  299,  302,
+
+        0,    0,  303,  303,  303,  299,  300,  303,  304,  304,
+      304,  300,    0,  304,  305,  305,  305,  301,    0,  305,
+        0,    0,  306,  306,  306,    0,  302,  306,    0,  302,
+      307,  307,  307,    0,  303,  307,  308,  308,  308,    0,
+      304,  308,  309,  309,  309,    0,  305,  309,  310,  310,
+      310,  304,  303,  310,  306,  311,  311,  311,    0,    0,
+      311,  306,  307,    0,    0,    0,    0,    0,  308,  307,
+      312,  312,  312,    0,  309,  312,  313,  313,  313,  309,
+      310,  313,    0,  315,  315,  315,    0,  311,  315,  316,
+      316,  316,    0,    0,  316,    0,    0,  311,    0,  317,
+
+      317,  317,  312,  310,  317,  319,  319,  319,  313,    0,
+      319,    0,  320,  320,  320,  315,    0,  320,    0,    0,
+      313,  316,  322,  322,  322,    0,    0,  322,    0,    0,
+        0,  317,    0,  315,  323,  323,  323,  319,    0,  323,
+      324,  324,  324,  316,  320,  324,    0,  317,  326,  326,
+      326,    0,    0,  326,  322,    0,  327,  327,  327,    0,
+        0,  327,    0,    0,  322,    0,  323,    0,  328,  328,
+      328,    0,  324,  328,    0,  324,  329,  329,  329,    0,
+      326,  329,    0,    0,    0,    0,  323,  326,  327,  332,
+      332,  332,    0,    0,  332,    0,  333,  333,  333,  327,
+
+      328,  333,    0,    0,  334,  334,  334,  328,  329,  334,
+      335,  335,  335,    0,    0,  335,    0,  336,  336,  336,
+        0,  332,  336,  329,  332,  337,  337,  337,  333,    0,
+      337,    0,  338,  338,  338,    0,  334,  338,  339,  339,
+      339,    0,  335,  339,    0,  341,  341,  341,    0,  336,
+      341,  334,    0,    0,    0,    0,  336,  337,  342,  342,
+      342,    0,  335,  342,  338,    0,  343,  343,  343,    0,
+      339,  343,    0,    0,    0,  337,    0,  341,    0,  344,
+      344,  344,    0,  338,  344,  339,  341,  345,  345,  345,
+      342,    0,  345,    0,  346,  346,  346,    0,  343,  346,
+
+      347,  347,  347,    0,    0,  347,    0,    0,  349,  349,
+      349,  344,    0,  349,    0,    0,    0,  343,    0,  345,
+      350,  350,  350,    0,    0,  350,  346,    0,    0,    0,
+      344,    0,  347,    0,    0,  346,  352,  352,  352,  347,
+      349,  352,  353,  353,  353,    0,    0,  353,  356,  356,
+      356,    0,  350,  356,  357,  357,  357,    0,    0,  357,
+      358,  358,  358,    0,    0,  358,    0,    0,  352,    0,
+        0,    0,    0,    0,  353,  352,    0,    0,    0,    0,
+      356,    0,    0,    0,    0,    0,  357,    0,    0,    0,
+        0,    0,  358,  353,    0,    0,    0,    0,    0,  356,
+
+      362,  362,  362,  362,  363,  363,  363,  363,  364,    0,
+      364,  364,  365,    0,    0,  365,  366,  366,  366,  366,
+      367,  367,  367,  367,  368,    0,  368,  368,  369,  369,
+      370,  370,  370,  370,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361,  361,  361,  361,  361,  361,
+      361,  361,  361,  361,  361
+
+    } ;
+
+static yy_state_type yy_last_accepting_state;
+static char *yy_last_accepting_cpos;
+
+extern int yy_flex_debug;
+int yy_flex_debug = 1;
+
+static const flex_int16_t yy_rule_linenum[63] =
+    {   0,
+      134,  136,  138,  143,  144,  149,  150,  151,  163,  166,
+      171,  178,  187,  199,  211,  221,  231,  241,  250,  259,
+      268,  277,  286,  295,  304,  313,  322,  331,  340,  349,
+      358,  367,  376,  385,  394,  403,  412,  421,  430,  439,
+      448,  457,  466,  475,  576,  592,  641,  649,  664,  665,
+      666,  667,  668,  669,  671,  689,  702,  707,  711,  713,
+      715,  717
+    } ;
+
+/* The intent behind this definition is that it'll catch
+ * any uses of REJECT which flex missed.
+ */
+#define REJECT reject_used_but_not_detected
+#define yymore() yymore_used_but_not_detected
+#define YY_MORE_ADJ 0
+#define YY_RESTORE_YY_MORE_OFFSET
+char *yytext;
+#line 1 "netconf_lexer.ll"
+/* Copyright (C) 2018-2020 Internet Systems Consortium, Inc. ("ISC")
+
+   This Source Code Form is subject to the terms of the Mozilla Public
+   License, v. 2.0. If a copy of the MPL was not distributed with this
+   file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#line 8 "netconf_lexer.ll"
+
+/* Generated files do not make clang static analyser so happy */
+#ifndef __clang_analyzer__
+
+#include <cctype>
+#include <cerrno>
+#include <climits>
+#include <cstdlib>
+#include <string>
+#include <netconf/parser_context.h>
+#include <asiolink/io_address.h>
+#include <boost/lexical_cast.hpp>
+#include <exceptions/exceptions.h>
+#include <cc/dhcp_config_error.h>
+
+/* Please avoid C++ style comments (// ... eol) as they break flex 2.6.2 */
+
+/* Work around an incompatibility in flex (at least versions
+   2.5.31 through 2.5.33): it generates code that does
+   not conform to C89.  See Debian bug 333231
+   <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=333231>. */
+# undef yywrap
+# define yywrap() 1
+
+namespace {
+
+bool start_token_flag = false;
+
+isc::netconf::ParserContext::ParserType start_token_value;
+unsigned int comment_start_line = 0;
+
+using namespace isc;
+using isc::netconf::NetconfParser;
+
+};
+
+/* To avoid the call to exit... oops! */
+#define YY_FATAL_ERROR(msg) isc::netconf::ParserContext::fatal(msg)
+#line 1505 "netconf_lexer.cc"
+/* noyywrap disables automatic rewinding for the next file to parse. Since we
+   always parse only a single string, there's no need to do any wraps. And
+   using yywrap requires linking with -lfl, which provides the default yywrap
+   implementation that always returns 1 anyway. */
+/* nounput simplifies the lexer, by removing support for putting a character
+   back into the input stream. We never use such capability anyway. */
+/* batch means that we'll never use the generated lexer interactively. */
+/* avoid to get static global variables to remain with C++. */
+/* in last resort %option reentrant */
+/* Enables debug mode. To see the debug messages, one needs to also set
+   yy_flex_debug to 1, then the debug messages will be printed on stderr. */
+/* I have no idea what this option does, except it was specified in the bison
+   examples and Postgres folks added it to remove gcc 4.3 warnings. Let's
+   be on the safe side and keep it. */
+#define YY_NO_INPUT 1
+
+/* These are not token expressions yet, just convenience expressions that
+   can be used during actual token definitions. Note some can match
+   incorrect inputs (e.g., IP addresses) which must be checked. */
+/* for errors */
+#line 97 "netconf_lexer.ll"
+/* This code run each time a pattern is matched. It updates the location
+   by moving it ahead by yyleng bytes. yyleng specifies the length of the
+   currently matched token. */
+#define YY_USER_ACTION  driver.loc_.columns(yyleng);
+#line 1531 "netconf_lexer.cc"
+#line 1532 "netconf_lexer.cc"
+
+#define INITIAL 0
+#define COMMENT 1
+#define DIR_ENTER 2
+#define DIR_INCLUDE 3
+#define DIR_EXIT 4
+
+#ifndef YY_NO_UNISTD_H
+/* Special case for "unistd.h", since it is non-ANSI. We include it way
+ * down here because we want the user's section 1 to have been scanned first.
+ * The user has a chance to override it with an option.
+ */
+/* %if-c-only */
+#include <unistd.h>
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+#endif
+
+#ifndef YY_EXTRA_TYPE
+#define YY_EXTRA_TYPE void *
+#endif
+
+/* %if-c-only Reentrant structure and macros (non-C++). */
+/* %if-reentrant */
+/* %if-c-only */
+
+static int yy_init_globals ( void );
+
+/* %endif */
+/* %if-reentrant */
+/* %endif */
+/* %endif End reentrant structures and macros. */
+
+/* Accessor methods to globals.
+   These are made visible to non-reentrant scanners for convenience. */
+
+int yylex_destroy ( void );
+
+int yyget_debug ( void );
+
+void yyset_debug ( int debug_flag  );
+
+YY_EXTRA_TYPE yyget_extra ( void );
+
+void yyset_extra ( YY_EXTRA_TYPE user_defined  );
+
+FILE *yyget_in ( void );
+
+void yyset_in  ( FILE * _in_str  );
+
+FILE *yyget_out ( void );
+
+void yyset_out  ( FILE * _out_str  );
+
+			int yyget_leng ( void );
+
+char *yyget_text ( void );
+
+int yyget_lineno ( void );
+
+void yyset_lineno ( int _line_number  );
+
+/* %if-bison-bridge */
+/* %endif */
+
+/* Macros after this point can all be overridden by user definitions in
+ * section 1.
+ */
+
+#ifndef YY_SKIP_YYWRAP
+#ifdef __cplusplus
+extern "C" int yywrap ( void );
+#else
+extern int yywrap ( void );
+#endif
+#endif
+
+/* %not-for-header */
+#ifndef YY_NO_UNPUT
+    
+#endif
+/* %ok-for-header */
+
+/* %endif */
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy ( char *, const char *, int );
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen ( const char * );
+#endif
+
+#ifndef YY_NO_INPUT
+/* %if-c-only Standard (non-C++) definition */
+/* %not-for-header */
+#ifdef __cplusplus
+static int yyinput ( void );
+#else
+static int input ( void );
+#endif
+/* %ok-for-header */
+
+/* %endif */
+#endif
+
+/* %if-c-only */
+
+/* %endif */
+
+/* Amount of stuff to slurp up with each read. */
+#ifndef YY_READ_BUF_SIZE
+#ifdef __ia64__
+/* On IA-64, the buffer size is 16k, not 8k */
+#define YY_READ_BUF_SIZE 16384
+#else
+#define YY_READ_BUF_SIZE 8192
+#endif /* __ia64__ */
+#endif
+
+/* Copy whatever the last rule matched to the standard output. */
+#ifndef ECHO
+/* %if-c-only Standard (non-C++) definition */
+/* This used to be an fputs(), but since the string might contain NUL's,
+ * we now use fwrite().
+ */
+#define ECHO do { if (fwrite( yytext, (size_t) yyleng, 1, yyout )) {} } while (0)
+/* %endif */
+/* %if-c++-only C++ definition */
+/* %endif */
+#endif
+
+/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
+ * is returned in "result".
+ */
+#ifndef YY_INPUT
+#define YY_INPUT(buf,result,max_size) \
+/* %% [5.0] fread()/read() definition of YY_INPUT goes here unless we're doing C++ \ */\
+	if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
+		{ \
+		int c = '*'; \
+		int n; \
+		for ( n = 0; n < max_size && \
+			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
+			buf[n] = (char) c; \
+		if ( c == '\n' ) \
+			buf[n++] = (char) c; \
+		if ( c == EOF && ferror( yyin ) ) \
+			YY_FATAL_ERROR( "input in flex scanner failed" ); \
+		result = n; \
+		} \
+	else \
+		{ \
+		errno=0; \
+		while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \
+			{ \
+			if( errno != EINTR) \
+				{ \
+				YY_FATAL_ERROR( "input in flex scanner failed" ); \
+				break; \
+				} \
+			errno=0; \
+			clearerr(yyin); \
+			} \
+		}\
+\
+/* %if-c++-only C++ definition \ */\
+/* %endif */
+
+#endif
+
+/* No semi-colon after return; correct usage is to write "yyterminate();" -
+ * we don't want an extra ';' after the "return" because that will cause
+ * some compilers to complain about unreachable statements.
+ */
+#ifndef yyterminate
+#define yyterminate() return YY_NULL
+#endif
+
+/* Number of entries by which start-condition stack grows. */
+#ifndef YY_START_STACK_INCR
+#define YY_START_STACK_INCR 25
+#endif
+
+/* Report a fatal error. */
+#ifndef YY_FATAL_ERROR
+/* %if-c-only */
+#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+#endif
+
+/* %if-tables-serialization structures and prototypes */
+/* %not-for-header */
+/* %ok-for-header */
+
+/* %not-for-header */
+/* %tables-yydmap generated elements */
+/* %endif */
+/* end tables serialization structures and prototypes */
+
+/* %ok-for-header */
+
+/* Default declaration of generated scanner - a define so the user can
+ * easily add parameters.
+ */
+#ifndef YY_DECL
+#define YY_DECL_IS_OURS 1
+/* %if-c-only Standard (non-C++) definition */
+
+extern int yylex (void);
+
+#define YY_DECL int yylex (void)
+/* %endif */
+/* %if-c++-only C++ definition */
+/* %endif */
+#endif /* !YY_DECL */
+
+/* Code executed at the beginning of each rule, after yytext and yyleng
+ * have been set up.
+ */
+#ifndef YY_USER_ACTION
+#define YY_USER_ACTION
+#endif
+
+/* Code executed at the end of each rule. */
+#ifndef YY_BREAK
+#define YY_BREAK /*LINTED*/break;
+#endif
+
+/* %% [6.0] YY_RULE_SETUP definition goes here */
+#define YY_RULE_SETUP \
+	YY_USER_ACTION
+
+/* %not-for-header */
+/** The main scanner function which does all the work.
+ */
+YY_DECL
+{
+	yy_state_type yy_current_state;
+	char *yy_cp, *yy_bp;
+	int yy_act;
+    
+	if ( !(yy_init) )
+		{
+		(yy_init) = 1;
+
+#ifdef YY_USER_INIT
+		YY_USER_INIT;
+#endif
+
+		if ( ! (yy_start) )
+			(yy_start) = 1;	/* first start state */
+
+		if ( ! yyin )
+/* %if-c-only */
+			yyin = stdin;
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+
+		if ( ! yyout )
+/* %if-c-only */
+			yyout = stdout;
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+
+		if ( ! YY_CURRENT_BUFFER ) {
+			yyensure_buffer_stack ();
+			YY_CURRENT_BUFFER_LVALUE =
+				yy_create_buffer( yyin, YY_BUF_SIZE );
+		}
+
+		yy_load_buffer_state(  );
+		}
+
+	{
+/* %% [7.0] user's declarations go here */
+#line 103 "netconf_lexer.ll"
+
+
+
+#line 107 "netconf_lexer.ll"
+    /* This part of the code is copied over to the verbatim to the top
+       of the generated yylex function. Explanation:
+       http://www.gnu.org/software/bison/manual/html_node/Multiple-start_002dsymbols.html */
+
+    /* Code run each time yylex is called. */
+    driver.loc_.step();
+
+    /* We currently have 3 points of entries defined:
+       START_JSON - which expects any valid JSON
+       START_NETCONF - which expects full configuration (with outer map and Netconf
+                     object in it.
+       START_SUB_NETCONF - which expects only content of the Netconf, this is
+                         primarily useful for testing. */
+    if (start_token_flag) {
+        start_token_flag = false;
+        switch (start_token_value) {
+        case ParserContext::PARSER_JSON:
+        default:
+            return NetconfParser::make_START_JSON(driver.loc_);
+        case ParserContext::PARSER_NETCONF:
+            return NetconfParser::make_START_NETCONF(driver.loc_);
+        case ParserContext::PARSER_SUB_NETCONF:
+            return NetconfParser::make_START_SUB_NETCONF(driver.loc_);
+        }
+    }
+
+
+#line 1846 "netconf_lexer.cc"
+
+	while ( /*CONSTCOND*/1 )		/* loops until end-of-file is reached */
+		{
+/* %% [8.0] yymore()-related code goes here */
+		yy_cp = (yy_c_buf_p);
+
+		/* Support of yytext. */
+		*yy_cp = (yy_hold_char);
+
+		/* yy_bp points to the position in yy_ch_buf of the start of
+		 * the current run.
+		 */
+		yy_bp = yy_cp;
+
+/* %% [9.0] code to set up and find next match goes here */
+		yy_current_state = (yy_start);
+yy_match:
+		do
+			{
+			YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)] ;
+			if ( yy_accept[yy_current_state] )
+				{
+				(yy_last_accepting_state) = yy_current_state;
+				(yy_last_accepting_cpos) = yy_cp;
+				}
+			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+				{
+				yy_current_state = (int) yy_def[yy_current_state];
+				if ( yy_current_state >= 362 )
+					yy_c = yy_meta[yy_c];
+				}
+			yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+			++yy_cp;
+			}
+		while ( yy_current_state != 361 );
+		yy_cp = (yy_last_accepting_cpos);
+		yy_current_state = (yy_last_accepting_state);
+
+yy_find_action:
+/* %% [10.0] code to find the action number goes here */
+		yy_act = yy_accept[yy_current_state];
+
+		YY_DO_BEFORE_ACTION;
+
+/* %% [11.0] code for yylineno update goes here */
+
+do_action:	/* This label is used only to access EOF actions. */
+
+/* %% [12.0] debug code goes here */
+		if ( yy_flex_debug )
+			{
+			if ( yy_act == 0 )
+				fprintf( stderr, "--scanner backing up\n" );
+			else if ( yy_act < 63 )
+				fprintf( stderr, "--accepting rule at line %ld (\"%s\")\n",
+				         (long)yy_rule_linenum[yy_act], yytext );
+			else if ( yy_act == 63 )
+				fprintf( stderr, "--accepting default rule (\"%s\")\n",
+				         yytext );
+			else if ( yy_act == 64 )
+				fprintf( stderr, "--(end of buffer or a NUL)\n" );
+			else
+				fprintf( stderr, "--EOF (start condition %d)\n", YY_START );
+			}
+
+		switch ( yy_act )
+	{ /* beginning of action switch */
+/* %% [13.0] actions go here */
+			case 0: /* must back up */
+			/* undo the effects of YY_DO_BEFORE_ACTION */
+			*yy_cp = (yy_hold_char);
+			yy_cp = (yy_last_accepting_cpos);
+			yy_current_state = (yy_last_accepting_state);
+			goto yy_find_action;
+
+case 1:
+YY_RULE_SETUP
+#line 134 "netconf_lexer.ll"
+;
+	YY_BREAK
+case 2:
+YY_RULE_SETUP
+#line 136 "netconf_lexer.ll"
+;
+	YY_BREAK
+case 3:
+YY_RULE_SETUP
+#line 138 "netconf_lexer.ll"
+{
+  BEGIN(COMMENT);
+  comment_start_line = driver.loc_.end.line;;
+}
+	YY_BREAK
+case 4:
+YY_RULE_SETUP
+#line 143 "netconf_lexer.ll"
+BEGIN(INITIAL);
+	YY_BREAK
+case 5:
+YY_RULE_SETUP
+#line 144 "netconf_lexer.ll"
+;
+	YY_BREAK
+case YY_STATE_EOF(COMMENT):
+#line 145 "netconf_lexer.ll"
+{
+    isc_throw(ParseError, "Comment not closed. (/* in line " << comment_start_line);
+}
+	YY_BREAK
+case 6:
+YY_RULE_SETUP
+#line 149 "netconf_lexer.ll"
+BEGIN(DIR_ENTER);
+	YY_BREAK
+case 7:
+YY_RULE_SETUP
+#line 150 "netconf_lexer.ll"
+BEGIN(DIR_INCLUDE);
+	YY_BREAK
+case 8:
+YY_RULE_SETUP
+#line 151 "netconf_lexer.ll"
+{
+    /* Include directive. */
+
+    /* Extract the filename. */
+    std::string tmp(yytext+1);
+    tmp.resize(tmp.size() - 1);
+
+    driver.includeFile(tmp);
+}
+	YY_BREAK
+case YY_STATE_EOF(DIR_ENTER):
+case YY_STATE_EOF(DIR_INCLUDE):
+case YY_STATE_EOF(DIR_EXIT):
+#line 160 "netconf_lexer.ll"
+{
+    isc_throw(ParseError, "Directive not closed.");
+}
+	YY_BREAK
+case 9:
+YY_RULE_SETUP
+#line 163 "netconf_lexer.ll"
+BEGIN(INITIAL);
+	YY_BREAK
+case 10:
+YY_RULE_SETUP
+#line 166 "netconf_lexer.ll"
+{
+    /* Ok, we found a with space. Let's ignore it and update loc variable. */
+    driver.loc_.step();
+}
+	YY_BREAK
+case 11:
+/* rule 11 can match eol */
+YY_RULE_SETUP
+#line 171 "netconf_lexer.ll"
+{
+    /* Newline found. Let's update the location and continue. */
+    driver.loc_.lines(yyleng);
+    driver.loc_.step();
+}
+	YY_BREAK
+case 12:
+YY_RULE_SETUP
+#line 178 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::CONFIG:
+        return NetconfParser::make_NETCONF(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("Netconf", driver.loc_);
+    }
+}
+	YY_BREAK
+case 13:
+YY_RULE_SETUP
+#line 187 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+    case ParserContext::SERVER:
+    case ParserContext::CONTROL_SOCKET:
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_USER_CONTEXT(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("user-context", driver.loc_);
+    }
+}
+	YY_BREAK
+case 14:
+YY_RULE_SETUP
+#line 199 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+    case ParserContext::SERVER:
+    case ParserContext::CONTROL_SOCKET:
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_COMMENT(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("comment", driver.loc_);
+    }
+}
+	YY_BREAK
+case 15:
+YY_RULE_SETUP
+#line 211 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+    case ParserContext::SERVER:
+        return NetconfParser::make_BOOT_UPDATE(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("boot-update", driver.loc_);
+    }
+}
+	YY_BREAK
+case 16:
+YY_RULE_SETUP
+#line 221 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+    case ParserContext::SERVER:
+        return NetconfParser::make_SUBSCRIBE_CHANGES(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("subscribe-changes", driver.loc_);
+    }
+}
+	YY_BREAK
+case 17:
+YY_RULE_SETUP
+#line 231 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+    case ParserContext::SERVER:
+        return NetconfParser::make_VALIDATE_CHANGES(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("validate-changes", driver.loc_);
+    }
+}
+	YY_BREAK
+case 18:
+YY_RULE_SETUP
+#line 241 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+        return NetconfParser::make_MANAGED_SERVERS(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("managed-servers", driver.loc_);
+    }
+}
+	YY_BREAK
+case 19:
+YY_RULE_SETUP
+#line 250 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::MANAGED_SERVERS:
+        return NetconfParser::make_DHCP4_SERVER(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("dhcp4", driver.loc_);
+    }
+}
+	YY_BREAK
+case 20:
+YY_RULE_SETUP
+#line 259 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::MANAGED_SERVERS:
+        return NetconfParser::make_DHCP6_SERVER(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("dhcp6", driver.loc_);
+    }
+}
+	YY_BREAK
+case 21:
+YY_RULE_SETUP
+#line 268 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::MANAGED_SERVERS:
+        return NetconfParser::make_D2_SERVER(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("d2", driver.loc_);
+    }
+}
+	YY_BREAK
+case 22:
+YY_RULE_SETUP
+#line 277 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::MANAGED_SERVERS:
+        return NetconfParser::make_CA_SERVER(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("ca", driver.loc_);
+    }
+}
+	YY_BREAK
+case 23:
+YY_RULE_SETUP
+#line 286 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::SERVER:
+        return NetconfParser::make_MODEL(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("model", driver.loc_);
+    }
+}
+	YY_BREAK
+case 24:
+YY_RULE_SETUP
+#line 295 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::SERVER:
+        return NetconfParser::make_CONTROL_SOCKET(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("control-socket", driver.loc_);
+    }
+}
+	YY_BREAK
+case 25:
+YY_RULE_SETUP
+#line 304 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::SOCKET_TYPE:
+        return NetconfParser::make_UNIX(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("unix", driver.loc_);
+    }
+}
+	YY_BREAK
+case 26:
+YY_RULE_SETUP
+#line 313 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::SOCKET_TYPE:
+        return NetconfParser::make_HTTP(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("http", driver.loc_);
+    }
+}
+	YY_BREAK
+case 27:
+YY_RULE_SETUP
+#line 322 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::SOCKET_TYPE:
+        return NetconfParser::make_STDOUT(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("stdout", driver.loc_);
+    }
+}
+	YY_BREAK
+case 28:
+YY_RULE_SETUP
+#line 331 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::CONTROL_SOCKET:
+        return NetconfParser::make_SOCKET_TYPE(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("socket-type", driver.loc_);
+    }
+}
+	YY_BREAK
+case 29:
+YY_RULE_SETUP
+#line 340 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::CONTROL_SOCKET:
+        return NetconfParser::make_SOCKET_NAME(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("socket-name", driver.loc_);
+    }
+}
+	YY_BREAK
+case 30:
+YY_RULE_SETUP
+#line 349 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::CONTROL_SOCKET:
+        return NetconfParser::make_SOCKET_URL(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("socket-url", driver.loc_);
+    }
+}
+	YY_BREAK
+case 31:
+YY_RULE_SETUP
+#line 358 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+        return NetconfParser::make_HOOKS_LIBRARIES(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("hooks-libraries", driver.loc_);
+    }
+}
+	YY_BREAK
+case 32:
+YY_RULE_SETUP
+#line 367 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::HOOKS_LIBRARIES:
+        return NetconfParser::make_LIBRARY(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("library", driver.loc_);
+    }
+}
+	YY_BREAK
+case 33:
+YY_RULE_SETUP
+#line 376 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::HOOKS_LIBRARIES:
+        return NetconfParser::make_PARAMETERS(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("parameters", driver.loc_);
+    }
+}
+	YY_BREAK
+case 34:
+YY_RULE_SETUP
+#line 385 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+        return NetconfParser::make_LOGGERS(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("loggers", driver.loc_);
+    }
+}
+	YY_BREAK
+case 35:
+YY_RULE_SETUP
+#line 394 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_NAME(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("name", driver.loc_);
+    }
+}
+	YY_BREAK
+case 36:
+YY_RULE_SETUP
+#line 403 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_OUTPUT_OPTIONS(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("output_options", driver.loc_);
+    }
+}
+	YY_BREAK
+case 37:
+YY_RULE_SETUP
+#line 412 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::OUTPUT_OPTIONS:
+        return NetconfParser::make_OUTPUT(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("output", driver.loc_);
+    }
+}
+	YY_BREAK
+case 38:
+YY_RULE_SETUP
+#line 421 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::OUTPUT_OPTIONS:
+        return NetconfParser::make_FLUSH(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("flush", driver.loc_);
+    }
+}
+	YY_BREAK
+case 39:
+YY_RULE_SETUP
+#line 430 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::OUTPUT_OPTIONS:
+        return NetconfParser::make_MAXSIZE(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("maxsize", driver.loc_);
+    }
+}
+	YY_BREAK
+case 40:
+YY_RULE_SETUP
+#line 439 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::OUTPUT_OPTIONS:
+        return NetconfParser::make_MAXVER(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("maxver", driver.loc_);
+    }
+}
+	YY_BREAK
+case 41:
+YY_RULE_SETUP
+#line 448 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::OUTPUT_OPTIONS:
+        return NetconfParser::make_PATTERN(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("pattern", driver.loc_);
+    }
+}
+	YY_BREAK
+case 42:
+YY_RULE_SETUP
+#line 457 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_DEBUGLEVEL(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("debuglevel", driver.loc_);
+    }
+}
+	YY_BREAK
+case 43:
+YY_RULE_SETUP
+#line 466 "netconf_lexer.ll"
+{
+    switch(driver.ctx_) {
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_SEVERITY(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("severity", driver.loc_);
+    }
+}
+	YY_BREAK
+case 44:
+YY_RULE_SETUP
+#line 475 "netconf_lexer.ll"
+{
+    /* A string has been matched. It contains the actual string and single quotes.
+       We need to get those quotes out of the way and just use its content, e.g.
+       for 'foo' we should get foo */
+    std::string raw(yytext+1);
+    size_t len = raw.size() - 1;
+    raw.resize(len);
+    std::string decoded;
+    decoded.reserve(len);
+    for (size_t pos = 0; pos < len; ++pos) {
+        int b = 0;
+        char c = raw[pos];
+        switch (c) {
+        case '"':
+            /* impossible condition */
+            driver.error(driver.loc_, "Bad quote in \"" + raw + "\"");
+            break;
+        case '\\':
+            ++pos;
+            if (pos >= len) {
+                /* impossible condition */
+                driver.error(driver.loc_, "Overflow escape in \"" + raw + "\"");
+            }
+            c = raw[pos];
+            switch (c) {
+            case '"':
+            case '\\':
+            case '/':
+                decoded.push_back(c);
+                break;
+            case 'b':
+                decoded.push_back('\b');
+                break;
+            case 'f':
+                decoded.push_back('\f');
+                break;
+            case 'n':
+                decoded.push_back('\n');
+                break;
+            case 'r':
+                decoded.push_back('\r');
+                break;
+            case 't':
+                decoded.push_back('\t');
+                break;
+            case 'u':
+                /* support only \u0000 to \u00ff */
+                ++pos;
+                if (pos + 4 > len) {
+                    /* impossible condition */
+                    driver.error(driver.loc_,
+                                 "Overflow unicode escape in \"" + raw + "\"");
+                }
+                if ((raw[pos] != '0') || (raw[pos + 1] != '0')) {
+                    driver.error(driver.loc_,
+                    "Unsupported unicode escape in \"" + raw + "\"",
+                    pos + 1);
+                }
+                pos += 2;
+                c = raw[pos];
+                if ((c >= '0') && (c <= '9')) {
+                    b = (c - '0') << 4;
+                } else if ((c >= 'A') && (c <= 'F')) {
+                    b = (c - 'A' + 10) << 4;
+                } else if ((c >= 'a') && (c <= 'f')) {
+                    b = (c - 'a' + 10) << 4;
+                } else {
+                    /* impossible condition */
+                    driver.error(driver.loc_, "Not hexadecimal in unicode escape in \"" + raw + "\"");
+                }
+                pos++;
+                c = raw[pos];
+                if ((c >= '0') && (c <= '9')) {
+                    b |= c - '0';
+                } else if ((c >= 'A') && (c <= 'F')) {
+                    b |= c - 'A' + 10;
+                } else if ((c >= 'a') && (c <= 'f')) {
+                    b |= c - 'a' + 10;
+                } else {
+                    /* impossible condition */
+                    driver.error(driver.loc_, "Not hexadecimal in unicode escape in \"" + raw + "\"");
+                }
+                decoded.push_back(static_cast<char>(b & 0xff));
+                break;
+            default:
+                /* impossible condition */
+                driver.error(driver.loc_, "Bad escape in \"" + raw + "\"");
+            }
+            break;
+        default:
+            if ((c >= 0) && (c < 0x20)) {
+                /* impossible condition */
+                driver.error(driver.loc_, "Invalid control in \"" + raw + "\"");
+            }
+            decoded.push_back(c);
+        }
+    }
+
+    return NetconfParser::make_STRING(decoded, driver.loc_);
+}
+	YY_BREAK
+case 45:
+/* rule 45 can match eol */
+YY_RULE_SETUP
+#line 576 "netconf_lexer.ll"
+{
+    /* Bad string with a forbidden control character inside */
+    std::string raw(yytext+1);
+    size_t len = raw.size() - 1;
+    size_t pos = 0;
+    for (; pos < len; ++pos) {
+        char c = raw[pos];
+        if ((c >= 0) && (c < 0x20)) {
+            break;
+        }
+    }
+    driver.error(driver.loc_,
+                 "Invalid control in " + std::string(yytext),
+                 pos + 1);
+}
+	YY_BREAK
+case 46:
+/* rule 46 can match eol */
+YY_RULE_SETUP
+#line 592 "netconf_lexer.ll"
+{
+    /* Bad string with a bad escape inside */
+    std::string raw(yytext+1);
+    size_t len = raw.size() - 1;
+    size_t pos = 0;
+    bool found = false;
+    for (; pos < len; ++pos) {
+        if (found) {
+            break;
+        }
+        char c = raw[pos];
+        if (c == '\\') {
+            ++pos;
+            c = raw[pos];
+            switch (c) {
+            case '"':
+            case '\\':
+            case '/':
+            case 'b':
+            case 'f':
+            case 'n':
+            case 'r':
+            case 't':
+                break;
+            case 'u':
+                if ((pos + 4 > len) ||
+                    !std::isxdigit(raw[pos + 1]) ||
+                    !std::isxdigit(raw[pos + 2]) ||
+                    !std::isxdigit(raw[pos + 3]) ||
+                    !std::isxdigit(raw[pos + 4])) {
+                    found = true;
+                }
+                break;
+            default:
+                found = true;
+                break;
+            }
+        }
+    }
+    /* The rule stops on the first " including on \" so add ... in this case */
+    std::string trailer = "";
+    if (raw[len - 1] == '\\') {
+        trailer = "...";
+    }
+    driver.error(driver.loc_,
+                 "Bad escape in " + std::string(yytext) + trailer,
+                 pos);
+}
+	YY_BREAK
+case 47:
+YY_RULE_SETUP
+#line 641 "netconf_lexer.ll"
+{
+    /* Bad string with an open escape at the end */
+    std::string raw(yytext+1);
+    driver.error(driver.loc_,
+                 "Overflow escape in " + std::string(yytext),
+                 raw.size() + 1);
+}
+	YY_BREAK
+case 48:
+YY_RULE_SETUP
+#line 649 "netconf_lexer.ll"
+{
+    /* Bad string with an open unicode escape at the end */
+    std::string raw(yytext+1);
+    size_t pos = raw.size() - 1;
+    for (; pos > 0; --pos) {
+        char c = raw[pos];
+        if (c == 'u') {
+            break;
+        }
+    }
+    driver.error(driver.loc_,
+                 "Overflow unicode escape in " + std::string(yytext),
+                 pos + 1);
+}
+	YY_BREAK
+case 49:
+YY_RULE_SETUP
+#line 664 "netconf_lexer.ll"
+{ return NetconfParser::make_LSQUARE_BRACKET(driver.loc_); }
+	YY_BREAK
+case 50:
+YY_RULE_SETUP
+#line 665 "netconf_lexer.ll"
+{ return NetconfParser::make_RSQUARE_BRACKET(driver.loc_); }
+	YY_BREAK
+case 51:
+YY_RULE_SETUP
+#line 666 "netconf_lexer.ll"
+{ return NetconfParser::make_LCURLY_BRACKET(driver.loc_); }
+	YY_BREAK
+case 52:
+YY_RULE_SETUP
+#line 667 "netconf_lexer.ll"
+{ return NetconfParser::make_RCURLY_BRACKET(driver.loc_); }
+	YY_BREAK
+case 53:
+YY_RULE_SETUP
+#line 668 "netconf_lexer.ll"
+{ return NetconfParser::make_COMMA(driver.loc_); }
+	YY_BREAK
+case 54:
+YY_RULE_SETUP
+#line 669 "netconf_lexer.ll"
+{ return NetconfParser::make_COLON(driver.loc_); }
+	YY_BREAK
+case 55:
+YY_RULE_SETUP
+#line 671 "netconf_lexer.ll"
+{
+    /* An integer was found. */
+    std::string tmp(yytext);
+    int64_t integer = 0;
+    try {
+        /* In substring we want to use negative values (e.g. -1).
+           In enterprise-id we need to use values up to 0xffffffff.
+           To cover both of those use cases, we need at least
+           int64_t. */
+        integer = boost::lexical_cast<int64_t>(tmp);
+    } catch (const boost::bad_lexical_cast &) {
+        driver.error(driver.loc_, "Failed to convert " + tmp + " to an integer.");
+    }
+
+    /* The parser needs the string form as double conversion is no lossless */
+    return NetconfParser::make_INTEGER(integer, driver.loc_);
+}
+	YY_BREAK
+case 56:
+YY_RULE_SETUP
+#line 689 "netconf_lexer.ll"
+{
+    /* A floating point was found. */
+    std::string tmp(yytext);
+    double fp = 0.0;
+    try {
+        fp = boost::lexical_cast<double>(tmp);
+    } catch (const boost::bad_lexical_cast &) {
+        driver.error(driver.loc_, "Failed to convert " + tmp + " to a floating point.");
+    }
+
+    return NetconfParser::make_FLOAT(fp, driver.loc_);
+}
+	YY_BREAK
+case 57:
+YY_RULE_SETUP
+#line 702 "netconf_lexer.ll"
+{
+    string tmp(yytext);
+    return NetconfParser::make_BOOLEAN(tmp == "true", driver.loc_);
+}
+	YY_BREAK
+case 58:
+YY_RULE_SETUP
+#line 707 "netconf_lexer.ll"
+{
+   return NetconfParser::make_NULL_TYPE(driver.loc_);
+}
+	YY_BREAK
+case 59:
+YY_RULE_SETUP
+#line 711 "netconf_lexer.ll"
+driver.error (driver.loc_, "JSON true reserved keyword is lower case only");
+	YY_BREAK
+case 60:
+YY_RULE_SETUP
+#line 713 "netconf_lexer.ll"
+driver.error (driver.loc_, "JSON false reserved keyword is lower case only");
+	YY_BREAK
+case 61:
+YY_RULE_SETUP
+#line 715 "netconf_lexer.ll"
+driver.error (driver.loc_, "JSON null reserved keyword is lower case only");
+	YY_BREAK
+case 62:
+YY_RULE_SETUP
+#line 717 "netconf_lexer.ll"
+driver.error (driver.loc_, "Invalid character: " + std::string(yytext));
+	YY_BREAK
+case YY_STATE_EOF(INITIAL):
+#line 719 "netconf_lexer.ll"
+{
+    if (driver.states_.empty()) {
+        return NetconfParser::make_END(driver.loc_);
+    }
+    driver.loc_ = driver.locs_.back();
+    driver.locs_.pop_back();
+    driver.file_ = driver.files_.back();
+    driver.files_.pop_back();
+    if (driver.sfile_) {
+        fclose(driver.sfile_);
+        driver.sfile_ = 0;
+    }
+    if (!driver.sfiles_.empty()) {
+        driver.sfile_ = driver.sfiles_.back();
+        driver.sfiles_.pop_back();
+    }
+    netconf__delete_buffer(YY_CURRENT_BUFFER);
+    netconf__switch_to_buffer(driver.states_.back());
+    driver.states_.pop_back();
+
+    BEGIN(DIR_EXIT);
+}
+	YY_BREAK
+case 63:
+YY_RULE_SETUP
+#line 742 "netconf_lexer.ll"
+ECHO;
+	YY_BREAK
+#line 2741 "netconf_lexer.cc"
+
+	case YY_END_OF_BUFFER:
+		{
+		/* Amount of text matched not including the EOB char. */
+		int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1;
+
+		/* Undo the effects of YY_DO_BEFORE_ACTION. */
+		*yy_cp = (yy_hold_char);
+		YY_RESTORE_YY_MORE_OFFSET
+
+		if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
+			{
+			/* We're scanning a new file or input source.  It's
+			 * possible that this happened because the user
+			 * just pointed yyin at a new source and called
+			 * yylex().  If so, then we have to assure
+			 * consistency between YY_CURRENT_BUFFER and our
+			 * globals.  Here is the right place to do so, because
+			 * this is the first action (other than possibly a
+			 * back-up) that will match for the new input source.
+			 */
+			(yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+/* %if-c-only */
+			YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+			YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
+			}
+
+		/* Note that here we test for yy_c_buf_p "<=" to the position
+		 * of the first EOB in the buffer, since yy_c_buf_p will
+		 * already have been incremented past the NUL character
+		 * (since all states make transitions on EOB to the
+		 * end-of-buffer state).  Contrast this with the test
+		 * in input().
+		 */
+		if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
+			{ /* This was really a NUL. */
+			yy_state_type yy_next_state;
+
+			(yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text;
+
+			yy_current_state = yy_get_previous_state(  );
+
+			/* Okay, we're now positioned to make the NUL
+			 * transition.  We couldn't have
+			 * yy_get_previous_state() go ahead and do it
+			 * for us because it doesn't know how to deal
+			 * with the possibility of jamming (and we don't
+			 * want to build jamming into it because then it
+			 * will run more slowly).
+			 */
+
+			yy_next_state = yy_try_NUL_trans( yy_current_state );
+
+			yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+
+			if ( yy_next_state )
+				{
+				/* Consume the NUL. */
+				yy_cp = ++(yy_c_buf_p);
+				yy_current_state = yy_next_state;
+				goto yy_match;
+				}
+
+			else
+				{
+/* %% [14.0] code to do back-up for compressed tables and set up yy_cp goes here */
+				yy_cp = (yy_last_accepting_cpos);
+				yy_current_state = (yy_last_accepting_state);
+				goto yy_find_action;
+				}
+			}
+
+		else switch ( yy_get_next_buffer(  ) )
+			{
+			case EOB_ACT_END_OF_FILE:
+				{
+				(yy_did_buffer_switch_on_eof) = 0;
+
+				if ( yywrap(  ) )
+					{
+					/* Note: because we've taken care in
+					 * yy_get_next_buffer() to have set up
+					 * yytext, we can now set up
+					 * yy_c_buf_p so that if some total
+					 * hoser (like flex itself) wants to
+					 * call the scanner after we return the
+					 * YY_NULL, it'll still work - another
+					 * YY_NULL will get returned.
+					 */
+					(yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ;
+
+					yy_act = YY_STATE_EOF(YY_START);
+					goto do_action;
+					}
+
+				else
+					{
+					if ( ! (yy_did_buffer_switch_on_eof) )
+						YY_NEW_FILE;
+					}
+				break;
+				}
+
+			case EOB_ACT_CONTINUE_SCAN:
+				(yy_c_buf_p) =
+					(yytext_ptr) + yy_amount_of_matched_text;
+
+				yy_current_state = yy_get_previous_state(  );
+
+				yy_cp = (yy_c_buf_p);
+				yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+				goto yy_match;
+
+			case EOB_ACT_LAST_MATCH:
+				(yy_c_buf_p) =
+				&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)];
+
+				yy_current_state = yy_get_previous_state(  );
+
+				yy_cp = (yy_c_buf_p);
+				yy_bp = (yytext_ptr) + YY_MORE_ADJ;
+				goto yy_find_action;
+			}
+		break;
+		}
+
+	default:
+		YY_FATAL_ERROR(
+			"fatal flex scanner internal error--no action found" );
+	} /* end of action switch */
+		} /* end of scanning one token */
+	} /* end of user's declarations */
+} /* end of yylex */
+/* %ok-for-header */
+
+/* %if-c++-only */
+/* %not-for-header */
+/* %ok-for-header */
+
+/* %endif */
+
+/* yy_get_next_buffer - try to read in a new buffer
+ *
+ * Returns a code representing an action:
+ *	EOB_ACT_LAST_MATCH -
+ *	EOB_ACT_CONTINUE_SCAN - continue scanning from current position
+ *	EOB_ACT_END_OF_FILE - end of file
+ */
+/* %if-c-only */
+static int yy_get_next_buffer (void)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    	char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
+	char *source = (yytext_ptr);
+	int number_to_move, i;
+	int ret_val;
+
+	if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] )
+		YY_FATAL_ERROR(
+		"fatal flex scanner internal error--end of buffer missed" );
+
+	if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
+		{ /* Don't try to fill the buffer, so this is an EOF. */
+		if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 )
+			{
+			/* We matched a single character, the EOB, so
+			 * treat this as a final EOF.
+			 */
+			return EOB_ACT_END_OF_FILE;
+			}
+
+		else
+			{
+			/* We matched some text prior to the EOB, first
+			 * process it.
+			 */
+			return EOB_ACT_LAST_MATCH;
+			}
+		}
+
+	/* Try to read more data. */
+
+	/* First move last chars to start of buffer. */
+	number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr) - 1);
+
+	for ( i = 0; i < number_to_move; ++i )
+		*(dest++) = *(source++);
+
+	if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
+		/* don't do the read, it's not guaranteed to return an EOF,
+		 * just force an EOF
+		 */
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0;
+
+	else
+		{
+			int num_to_read =
+			YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
+
+		while ( num_to_read <= 0 )
+			{ /* Not enough room in the buffer - grow it. */
+
+			/* just a shorter name for the current buffer */
+			YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE;
+
+			int yy_c_buf_p_offset =
+				(int) ((yy_c_buf_p) - b->yy_ch_buf);
+
+			if ( b->yy_is_our_buffer )
+				{
+				int new_size = b->yy_buf_size * 2;
+
+				if ( new_size <= 0 )
+					b->yy_buf_size += b->yy_buf_size / 8;
+				else
+					b->yy_buf_size *= 2;
+
+				b->yy_ch_buf = (char *)
+					/* Include room in for 2 EOB chars. */
+					yyrealloc( (void *) b->yy_ch_buf,
+							 (yy_size_t) (b->yy_buf_size + 2)  );
+				}
+			else
+				/* Can't grow it, we don't own it. */
+				b->yy_ch_buf = NULL;
+
+			if ( ! b->yy_ch_buf )
+				YY_FATAL_ERROR(
+				"fatal error - scanner input buffer overflow" );
+
+			(yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset];
+
+			num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
+						number_to_move - 1;
+
+			}
+
+		if ( num_to_read > YY_READ_BUF_SIZE )
+			num_to_read = YY_READ_BUF_SIZE;
+
+		/* Read in more data. */
+		YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
+			(yy_n_chars), num_to_read );
+
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+		}
+
+	if ( (yy_n_chars) == 0 )
+		{
+		if ( number_to_move == YY_MORE_ADJ )
+			{
+			ret_val = EOB_ACT_END_OF_FILE;
+			yyrestart( yyin  );
+			}
+
+		else
+			{
+			ret_val = EOB_ACT_LAST_MATCH;
+			YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
+				YY_BUFFER_EOF_PENDING;
+			}
+		}
+
+	else
+		ret_val = EOB_ACT_CONTINUE_SCAN;
+
+	if (((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+		/* Extend the array by 50%, plus the number we really need. */
+		int new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1);
+		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
+			(void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size  );
+		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
+			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+		/* "- 2" to take care of EOB's */
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
+	}
+
+	(yy_n_chars) += number_to_move;
+	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR;
+	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR;
+
+	(yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0];
+
+	return ret_val;
+}
+
+/* yy_get_previous_state - get the state just before the EOB char was reached */
+
+/* %if-c-only */
+/* %not-for-header */
+    static yy_state_type yy_get_previous_state (void)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	yy_state_type yy_current_state;
+	char *yy_cp;
+    
+/* %% [15.0] code to get the start state into yy_current_state goes here */
+	yy_current_state = (yy_start);
+
+	for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp )
+		{
+/* %% [16.0] code to find the next state goes here */
+		YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+		if ( yy_accept[yy_current_state] )
+			{
+			(yy_last_accepting_state) = yy_current_state;
+			(yy_last_accepting_cpos) = yy_cp;
+			}
+		while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+			{
+			yy_current_state = (int) yy_def[yy_current_state];
+			if ( yy_current_state >= 362 )
+				yy_c = yy_meta[yy_c];
+			}
+		yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+		}
+
+	return yy_current_state;
+}
+
+/* yy_try_NUL_trans - try to make a transition on the NUL character
+ *
+ * synopsis
+ *	next_state = yy_try_NUL_trans( current_state );
+ */
+/* %if-c-only */
+    static yy_state_type yy_try_NUL_trans  (yy_state_type yy_current_state )
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	int yy_is_jam;
+    /* %% [17.0] code to find the next state, and perhaps do backing up, goes here */
+	char *yy_cp = (yy_c_buf_p);
+
+	YY_CHAR yy_c = 1;
+	if ( yy_accept[yy_current_state] )
+		{
+		(yy_last_accepting_state) = yy_current_state;
+		(yy_last_accepting_cpos) = yy_cp;
+		}
+	while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+		{
+		yy_current_state = (int) yy_def[yy_current_state];
+		if ( yy_current_state >= 362 )
+			yy_c = yy_meta[yy_c];
+		}
+	yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+	yy_is_jam = (yy_current_state == 361);
+
+		return yy_is_jam ? 0 : yy_current_state;
+}
+
+#ifndef YY_NO_UNPUT
+/* %if-c-only */
+
+/* %endif */
+#endif
+
+/* %if-c-only */
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+    static int yyinput (void)
+#else
+    static int input  (void)
+#endif
+
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	int c;
+    
+	*(yy_c_buf_p) = (yy_hold_char);
+
+	if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR )
+		{
+		/* yy_c_buf_p now points to the character we want to return.
+		 * If this occurs *before* the EOB characters, then it's a
+		 * valid NUL; if not, then we've hit the end of the buffer.
+		 */
+		if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
+			/* This was really a NUL. */
+			*(yy_c_buf_p) = '\0';
+
+		else
+			{ /* need more input */
+			int offset = (int) ((yy_c_buf_p) - (yytext_ptr));
+			++(yy_c_buf_p);
+
+			switch ( yy_get_next_buffer(  ) )
+				{
+				case EOB_ACT_LAST_MATCH:
+					/* This happens because yy_g_n_b()
+					 * sees that we've accumulated a
+					 * token and flags that we need to
+					 * try matching the token before
+					 * proceeding.  But for input(),
+					 * there's no matching to consider.
+					 * So convert the EOB_ACT_LAST_MATCH
+					 * to EOB_ACT_END_OF_FILE.
+					 */
+
+					/* Reset buffer status. */
+					yyrestart( yyin );
+
+					/*FALLTHROUGH*/
+
+				case EOB_ACT_END_OF_FILE:
+					{
+					if ( yywrap(  ) )
+						return 0;
+
+					if ( ! (yy_did_buffer_switch_on_eof) )
+						YY_NEW_FILE;
+#ifdef __cplusplus
+					return yyinput();
+#else
+					return input();
+#endif
+					}
+
+				case EOB_ACT_CONTINUE_SCAN:
+					(yy_c_buf_p) = (yytext_ptr) + offset;
+					break;
+				}
+			}
+		}
+
+	c = *(unsigned char *) (yy_c_buf_p);	/* cast for 8-bit char's */
+	*(yy_c_buf_p) = '\0';	/* preserve yytext */
+	(yy_hold_char) = *++(yy_c_buf_p);
+
+/* %% [19.0] update BOL and yylineno */
+
+	return c;
+}
+/* %if-c-only */
+#endif	/* ifndef YY_NO_INPUT */
+/* %endif */
+
+/** Immediately switch to a different input stream.
+ * @param input_file A readable stream.
+ * 
+ * @note This function does not reset the start condition to @c INITIAL .
+ */
+/* %if-c-only */
+    void yyrestart  (FILE * input_file )
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    
+	if ( ! YY_CURRENT_BUFFER ){
+        yyensure_buffer_stack ();
+		YY_CURRENT_BUFFER_LVALUE =
+            yy_create_buffer( yyin, YY_BUF_SIZE );
+	}
+
+	yy_init_buffer( YY_CURRENT_BUFFER, input_file );
+	yy_load_buffer_state(  );
+}
+
+/* %if-c++-only */
+/* %endif */
+
+/** Switch to a different input buffer.
+ * @param new_buffer The new input buffer.
+ * 
+ */
+/* %if-c-only */
+    void yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer )
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    
+	/* TODO. We should be able to replace this entire function body
+	 * with
+	 *		yypop_buffer_state();
+	 *		yypush_buffer_state(new_buffer);
+     */
+	yyensure_buffer_stack ();
+	if ( YY_CURRENT_BUFFER == new_buffer )
+		return;
+
+	if ( YY_CURRENT_BUFFER )
+		{
+		/* Flush out information for old buffer. */
+		*(yy_c_buf_p) = (yy_hold_char);
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+		}
+
+	YY_CURRENT_BUFFER_LVALUE = new_buffer;
+	yy_load_buffer_state(  );
+
+	/* We don't actually know whether we did this switch during
+	 * EOF (yywrap()) processing, but the only time this flag
+	 * is looked at is after yywrap() is called, so it's safe
+	 * to go ahead and always set it.
+	 */
+	(yy_did_buffer_switch_on_eof) = 1;
+}
+
+/* %if-c-only */
+static void yy_load_buffer_state  (void)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    	(yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+	(yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
+/* %if-c-only */
+	yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+	(yy_hold_char) = *(yy_c_buf_p);
+}
+
+/** Allocate and initialize an input buffer state.
+ * @param file A readable stream.
+ * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
+ * 
+ * @return the allocated buffer state.
+ */
+/* %if-c-only */
+    YY_BUFFER_STATE yy_create_buffer  (FILE * file, int  size )
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	YY_BUFFER_STATE b;
+    
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state )  );
+	if ( ! b )
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+	b->yy_buf_size = size;
+
+	/* yy_ch_buf has to be 2 characters longer than the size given because
+	 * we need to put in 2 end-of-buffer characters.
+	 */
+	b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2)  );
+	if ( ! b->yy_ch_buf )
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+	b->yy_is_our_buffer = 1;
+
+	yy_init_buffer( b, file );
+
+	return b;
+}
+
+/* %if-c++-only */
+/* %endif */
+
+/** Destroy the buffer.
+ * @param b a buffer created with yy_create_buffer()
+ * 
+ */
+/* %if-c-only */
+    void yy_delete_buffer (YY_BUFFER_STATE  b )
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    
+	if ( ! b )
+		return;
+
+	if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
+		YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
+
+	if ( b->yy_is_our_buffer )
+		yyfree( (void *) b->yy_ch_buf  );
+
+	yyfree( (void *) b  );
+}
+
+/* Initializes or reinitializes a buffer.
+ * This function is sometimes called more than once on the same buffer,
+ * such as during a yyrestart() or at EOF.
+ */
+/* %if-c-only */
+    static void yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file )
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+
+{
+	int oerrno = errno;
+    
+	yy_flush_buffer( b );
+
+/* %if-c-only */
+	b->yy_input_file = file;
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+	b->yy_fill_buffer = 1;
+
+    /* If b is the current buffer, then yy_init_buffer was _probably_
+     * called from yyrestart() or through yy_get_next_buffer.
+     * In that case, we don't want to reset the lineno or column.
+     */
+    if (b != YY_CURRENT_BUFFER){
+        b->yy_bs_lineno = 1;
+        b->yy_bs_column = 0;
+    }
+
+/* %if-c-only */
+
+        b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
+    
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+	errno = oerrno;
+}
+
+/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
+ * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
+ * 
+ */
+/* %if-c-only */
+    void yy_flush_buffer (YY_BUFFER_STATE  b )
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    	if ( ! b )
+		return;
+
+	b->yy_n_chars = 0;
+
+	/* We always need two end-of-buffer characters.  The first causes
+	 * a transition to the end-of-buffer state.  The second causes
+	 * a jam in that state.
+	 */
+	b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
+	b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
+
+	b->yy_buf_pos = &b->yy_ch_buf[0];
+
+	b->yy_at_bol = 1;
+	b->yy_buffer_status = YY_BUFFER_NEW;
+
+	if ( b == YY_CURRENT_BUFFER )
+		yy_load_buffer_state(  );
+}
+
+/* %if-c-or-c++ */
+/** Pushes the new state onto the stack. The new state becomes
+ *  the current state. This function will allocate the stack
+ *  if necessary.
+ *  @param new_buffer The new state.
+ *  
+ */
+/* %if-c-only */
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer )
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    	if (new_buffer == NULL)
+		return;
+
+	yyensure_buffer_stack();
+
+	/* This block is copied from yy_switch_to_buffer. */
+	if ( YY_CURRENT_BUFFER )
+		{
+		/* Flush out information for old buffer. */
+		*(yy_c_buf_p) = (yy_hold_char);
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
+		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
+		}
+
+	/* Only push if top exists. Otherwise, replace top. */
+	if (YY_CURRENT_BUFFER)
+		(yy_buffer_stack_top)++;
+	YY_CURRENT_BUFFER_LVALUE = new_buffer;
+
+	/* copied from yy_switch_to_buffer. */
+	yy_load_buffer_state(  );
+	(yy_did_buffer_switch_on_eof) = 1;
+}
+/* %endif */
+
+/* %if-c-or-c++ */
+/** Removes and deletes the top of the stack, if present.
+ *  The next element becomes the new top.
+ *  
+ */
+/* %if-c-only */
+void yypop_buffer_state (void)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+    	if (!YY_CURRENT_BUFFER)
+		return;
+
+	yy_delete_buffer(YY_CURRENT_BUFFER );
+	YY_CURRENT_BUFFER_LVALUE = NULL;
+	if ((yy_buffer_stack_top) > 0)
+		--(yy_buffer_stack_top);
+
+	if (YY_CURRENT_BUFFER) {
+		yy_load_buffer_state(  );
+		(yy_did_buffer_switch_on_eof) = 1;
+	}
+}
+/* %endif */
+
+/* %if-c-or-c++ */
+/* Allocates the stack if it does not exist.
+ *  Guarantees space for at least one push.
+ */
+/* %if-c-only */
+static void yyensure_buffer_stack (void)
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+{
+	yy_size_t num_to_alloc;
+    
+	if (!(yy_buffer_stack)) {
+
+		/* First allocation is just for 2 elements, since we don't know if this
+		 * scanner will even need a stack. We use 2 instead of 1 to avoid an
+		 * immediate realloc on the next call.
+         */
+      num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
+		(yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
+								(num_to_alloc * sizeof(struct yy_buffer_state*)
+								);
+		if ( ! (yy_buffer_stack) )
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
+
+		memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));
+
+		(yy_buffer_stack_max) = num_to_alloc;
+		(yy_buffer_stack_top) = 0;
+		return;
+	}
+
+	if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){
+
+		/* Increase the buffer to prepare for a possible push. */
+		yy_size_t grow_size = 8 /* arbitrary grow size */;
+
+		num_to_alloc = (yy_buffer_stack_max) + grow_size;
+		(yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
+								((yy_buffer_stack),
+								num_to_alloc * sizeof(struct yy_buffer_state*)
+								);
+		if ( ! (yy_buffer_stack) )
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
+
+		/* zero only the new slots.*/
+		memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*));
+		(yy_buffer_stack_max) = num_to_alloc;
+	}
+}
+/* %endif */
+
+/* %if-c-only */
+/** Setup the input buffer state to scan directly from a user-specified character buffer.
+ * @param base the character buffer
+ * @param size the size in bytes of the character buffer
+ * 
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE yy_scan_buffer  (char * base, yy_size_t  size )
+{
+	YY_BUFFER_STATE b;
+    
+	if ( size < 2 ||
+	     base[size-2] != YY_END_OF_BUFFER_CHAR ||
+	     base[size-1] != YY_END_OF_BUFFER_CHAR )
+		/* They forgot to leave room for the EOB's. */
+		return NULL;
+
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state )  );
+	if ( ! b )
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
+
+	b->yy_buf_size = (int) (size - 2);	/* "- 2" to take care of EOB's */
+	b->yy_buf_pos = b->yy_ch_buf = base;
+	b->yy_is_our_buffer = 0;
+	b->yy_input_file = NULL;
+	b->yy_n_chars = b->yy_buf_size;
+	b->yy_is_interactive = 0;
+	b->yy_at_bol = 1;
+	b->yy_fill_buffer = 0;
+	b->yy_buffer_status = YY_BUFFER_NEW;
+
+	yy_switch_to_buffer( b  );
+
+	return b;
+}
+/* %endif */
+
+/* %if-c-only */
+/** Setup the input buffer state to scan a string. The next call to yylex() will
+ * scan from a @e copy of @a str.
+ * @param yystr a NUL-terminated string to scan
+ * 
+ * @return the newly allocated buffer state object.
+ * @note If you want to scan bytes that may contain NUL values, then use
+ *       yy_scan_bytes() instead.
+ */
+YY_BUFFER_STATE yy_scan_string (const char * yystr )
+{
+    
+	return yy_scan_bytes( yystr, (int) strlen(yystr) );
+}
+/* %endif */
+
+/* %if-c-only */
+/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
+ * scan from a @e copy of @a bytes.
+ * @param yybytes the byte buffer to scan
+ * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes.
+ * 
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE yy_scan_bytes  (const char * yybytes, int  _yybytes_len )
+{
+	YY_BUFFER_STATE b;
+	char *buf;
+	yy_size_t n;
+	int i;
+    
+	/* Get memory for full buffer, including space for trailing EOB's. */
+	n = (yy_size_t) (_yybytes_len + 2);
+	buf = (char *) yyalloc( n  );
+	if ( ! buf )
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
+
+	for ( i = 0; i < _yybytes_len; ++i )
+		buf[i] = yybytes[i];
+
+	buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
+
+	b = yy_scan_buffer( buf, n );
+	if ( ! b )
+		YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
+
+	/* It's okay to grow etc. this buffer, and we should throw it
+	 * away when we're done.
+	 */
+	b->yy_is_our_buffer = 1;
+
+	return b;
+}
+/* %endif */
+
+#ifndef YY_EXIT_FAILURE
+#define YY_EXIT_FAILURE 2
+#endif
+
+/* %if-c-only */
+static void yynoreturn yy_fatal_error (const char* msg )
+{
+			fprintf( stderr, "%s\n", msg );
+	exit( YY_EXIT_FAILURE );
+}
+/* %endif */
+/* %if-c++-only */
+/* %endif */
+
+/* Redefine yyless() so it works in section 3 code. */
+
+#undef yyless
+#define yyless(n) \
+	do \
+		{ \
+		/* Undo effects of setting up yytext. */ \
+        int yyless_macro_arg = (n); \
+        YY_LESS_LINENO(yyless_macro_arg);\
+		yytext[yyleng] = (yy_hold_char); \
+		(yy_c_buf_p) = yytext + yyless_macro_arg; \
+		(yy_hold_char) = *(yy_c_buf_p); \
+		*(yy_c_buf_p) = '\0'; \
+		yyleng = yyless_macro_arg; \
+		} \
+	while ( 0 )
+
+/* Accessor  methods (get/set functions) to struct members. */
+
+/* %if-c-only */
+/* %if-reentrant */
+/* %endif */
+
+/** Get the current line number.
+ * 
+ */
+int yyget_lineno  (void)
+{
+    
+    return yylineno;
+}
+
+/** Get the input stream.
+ * 
+ */
+FILE *yyget_in  (void)
+{
+        return yyin;
+}
+
+/** Get the output stream.
+ * 
+ */
+FILE *yyget_out  (void)
+{
+        return yyout;
+}
+
+/** Get the length of the current token.
+ * 
+ */
+int yyget_leng  (void)
+{
+        return yyleng;
+}
+
+/** Get the current token.
+ * 
+ */
+
+char *yyget_text  (void)
+{
+        return yytext;
+}
+
+/* %if-reentrant */
+/* %endif */
+
+/** Set the current line number.
+ * @param _line_number line number
+ * 
+ */
+void yyset_lineno (int  _line_number )
+{
+    
+    yylineno = _line_number;
+}
+
+/** Set the input stream. This does not discard the current
+ * input buffer.
+ * @param _in_str A readable stream.
+ * 
+ * @see yy_switch_to_buffer
+ */
+void yyset_in (FILE *  _in_str )
+{
+        yyin = _in_str ;
+}
+
+void yyset_out (FILE *  _out_str )
+{
+        yyout = _out_str ;
+}
+
+int yyget_debug  (void)
+{
+        return yy_flex_debug;
+}
+
+void yyset_debug (int  _bdebug )
+{
+        yy_flex_debug = _bdebug ;
+}
+
+/* %endif */
+
+/* %if-reentrant */
+/* %if-bison-bridge */
+/* %endif */
+/* %endif if-c-only */
+
+/* %if-c-only */
+static int yy_init_globals (void)
+{
+        /* Initialization is the same as for the non-reentrant scanner.
+     * This function is called from yylex_destroy(), so don't allocate here.
+     */
+
+    (yy_buffer_stack) = NULL;
+    (yy_buffer_stack_top) = 0;
+    (yy_buffer_stack_max) = 0;
+    (yy_c_buf_p) = NULL;
+    (yy_init) = 0;
+    (yy_start) = 0;
+
+/* Defined in main.c */
+#ifdef YY_STDINIT
+    yyin = stdin;
+    yyout = stdout;
+#else
+    yyin = NULL;
+    yyout = NULL;
+#endif
+
+    /* For future reference: Set errno on error, since we are called by
+     * yylex_init()
+     */
+    return 0;
+}
+/* %endif */
+
+/* %if-c-only SNIP! this currently causes conflicts with the c++ scanner */
+/* yylex_destroy is for both reentrant and non-reentrant scanners. */
+int yylex_destroy  (void)
+{
+    
+    /* Pop the buffer stack, destroying each element. */
+	while(YY_CURRENT_BUFFER){
+		yy_delete_buffer( YY_CURRENT_BUFFER  );
+		YY_CURRENT_BUFFER_LVALUE = NULL;
+		yypop_buffer_state();
+	}
+
+	/* Destroy the stack itself. */
+	yyfree((yy_buffer_stack) );
+	(yy_buffer_stack) = NULL;
+
+    /* Reset the globals. This is important in a non-reentrant scanner so the next time
+     * yylex() is called, initialization will occur. */
+    yy_init_globals( );
+
+/* %if-reentrant */
+/* %endif */
+    return 0;
+}
+/* %endif */
+
+/*
+ * Internal utility routines.
+ */
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char* s1, const char * s2, int n )
+{
+		
+	int i;
+	for ( i = 0; i < n; ++i )
+		s1[i] = s2[i];
+}
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (const char * s )
+{
+	int n;
+	for ( n = 0; s[n]; ++n )
+		;
+
+	return n;
+}
+#endif
+
+void *yyalloc (yy_size_t  size )
+{
+			return malloc(size);
+}
+
+void *yyrealloc  (void * ptr, yy_size_t  size )
+{
+		
+	/* The cast to (char *) in the following accommodates both
+	 * implementations that use char* generic pointers, and those
+	 * that use void* generic pointers.  It works with the latter
+	 * because both ANSI C and C++ allow castless assignment from
+	 * any pointer type to void*, and deal with argument conversions
+	 * as though doing an assignment.
+	 */
+	return realloc(ptr, size);
+}
+
+void yyfree (void * ptr )
+{
+			free( (char *) ptr );	/* see yyrealloc() for (char *) cast */
+}
+
+/* %if-tables-serialization definitions */
+/* %define-yytables   The name for this specific scanner's tables. */
+#define YYTABLES_NAME "yytables"
+/* %endif */
+
+/* %ok-for-header */
+
+#line 742 "netconf_lexer.ll"
+
+
+using namespace isc::dhcp;
+
+void
+ParserContext::scanStringBegin(const std::string& str, ParserType parser_type)
+{
+    start_token_flag = true;
+    start_token_value = parser_type;
+
+    file_ = "<string>";
+    sfile_ = 0;
+    loc_.initialize(&file_);
+    yy_flex_debug = trace_scanning_;
+    YY_BUFFER_STATE buffer;
+    buffer = netconf__scan_bytes(str.c_str(), str.size());
+    if (!buffer) {
+        fatal("cannot scan string");
+        /* fatal() throws an exception so this can't be reached */
+    }
+}
+
+void
+ParserContext::scanFileBegin(FILE * f,
+                             const std::string& filename,
+                             ParserType parser_type)
+{
+    start_token_flag = true;
+    start_token_value = parser_type;
+
+    file_ = filename;
+    sfile_ = f;
+    loc_.initialize(&file_);
+    yy_flex_debug = trace_scanning_;
+    YY_BUFFER_STATE buffer;
+
+    /* See netconf_lexer.cc header for available definitions */
+    buffer = netconf__create_buffer(f, 65536 /*buffer size*/);
+    if (!buffer) {
+        fatal("cannot scan file " + filename);
+    }
+    netconf__switch_to_buffer(buffer);
+}
+
+void
+ParserContext::scanEnd() {
+    if (sfile_)
+        fclose(sfile_);
+    sfile_ = 0;
+    static_cast<void>(netconf_lex_destroy());
+    /* Close files */
+    while (!sfiles_.empty()) {
+        FILE* f = sfiles_.back();
+        if (f) {
+            fclose(f);
+        }
+        sfiles_.pop_back();
+    }
+    /* Delete states */
+    while (!states_.empty()) {
+        netconf__delete_buffer(states_.back());
+        states_.pop_back();
+    }
+}
+
+void
+ParserContext::includeFile(const std::string& filename) {
+    if (states_.size() > 10) {
+        fatal("Too many nested include.");
+    }
+
+    FILE* f = fopen(filename.c_str(), "r");
+    if (!f) {
+        fatal("Can't open include file " + filename);
+    }
+    if (sfile_) {
+        sfiles_.push_back(sfile_);
+    }
+    sfile_ = f;
+    states_.push_back(YY_CURRENT_BUFFER);
+    YY_BUFFER_STATE buffer;
+    buffer = netconf__create_buffer(f, 65536 /*buffer size*/);
+    if (!buffer) {
+        fatal( "Can't scan include file " + filename);
+    }
+    netconf__switch_to_buffer(buffer);
+    files_.push_back(file_);
+    file_ = filename;
+    locs_.push_back(loc_);
+    loc_.initialize(&file_);
+
+    BEGIN(INITIAL);
+}
+
+namespace {
+/** To avoid unused function error */
+class Dummy {
+    /* cppcheck-suppress unusedPrivateFunction */
+    void dummy() { yy_fatal_error("Fix me: how to disable its definition?"); }
+};
+}
+#endif /* !__clang_analyzer__ */
+
diff --git a/src/bin/netconf/netconf_lexer.ll b/src/bin/netconf/netconf_lexer.ll
new file mode 100644
index 0000000..5f056a6
--- /dev/null
+++ b/src/bin/netconf/netconf_lexer.ll
@@ -0,0 +1,842 @@
+/* Copyright (C) 2018-2020 Internet Systems Consortium, Inc. ("ISC")
+
+   This Source Code Form is subject to the terms of the Mozilla Public
+   License, v. 2.0. If a copy of the MPL was not distributed with this
+   file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+%{ /* -*- C++ -*- */
+
+/* Generated files do not make clang static analyser so happy */
+#ifndef __clang_analyzer__
+
+#include <cctype>
+#include <cerrno>
+#include <climits>
+#include <cstdlib>
+#include <string>
+#include <netconf/parser_context.h>
+#include <asiolink/io_address.h>
+#include <boost/lexical_cast.hpp>
+#include <exceptions/exceptions.h>
+#include <cc/dhcp_config_error.h>
+
+/* Please avoid C++ style comments (// ... eol) as they break flex 2.6.2 */
+
+/* Work around an incompatibility in flex (at least versions
+   2.5.31 through 2.5.33): it generates code that does
+   not conform to C89.  See Debian bug 333231
+   <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=333231>. */
+# undef yywrap
+# define yywrap() 1
+
+namespace {
+
+bool start_token_flag = false;
+
+isc::netconf::ParserContext::ParserType start_token_value;
+unsigned int comment_start_line = 0;
+
+using namespace isc;
+using isc::netconf::NetconfParser;
+
+};
+
+/* To avoid the call to exit... oops! */
+#define YY_FATAL_ERROR(msg) isc::netconf::ParserContext::fatal(msg)
+%}
+
+/* noyywrap disables automatic rewinding for the next file to parse. Since we
+   always parse only a single string, there's no need to do any wraps. And
+   using yywrap requires linking with -lfl, which provides the default yywrap
+   implementation that always returns 1 anyway. */
+%option noyywrap
+
+/* nounput simplifies the lexer, by removing support for putting a character
+   back into the input stream. We never use such capability anyway. */
+%option nounput
+
+/* batch means that we'll never use the generated lexer interactively. */
+%option batch
+
+/* avoid to get static global variables to remain with C++. */
+/* in last resort %option reentrant */
+
+/* Enables debug mode. To see the debug messages, one needs to also set
+   yy_flex_debug to 1, then the debug messages will be printed on stderr. */
+%option debug
+
+/* I have no idea what this option does, except it was specified in the bison
+   examples and Postgres folks added it to remove gcc 4.3 warnings. Let's
+   be on the safe side and keep it. */
+%option noinput
+
+%x COMMENT
+%x DIR_ENTER DIR_INCLUDE DIR_EXIT
+
+/* These are not token expressions yet, just convenience expressions that
+   can be used during actual token definitions. Note some can match
+   incorrect inputs (e.g., IP addresses) which must be checked. */
+int   \-?[0-9]+
+blank [ \t\r]
+
+UnicodeEscapeSequence           u[0-9A-Fa-f]{4}
+JSONEscapeCharacter             ["\\/bfnrt]
+JSONEscapeSequence              {JSONEscapeCharacter}|{UnicodeEscapeSequence}
+JSONStandardCharacter           [^\x00-\x1f"\\]
+JSONStringCharacter             {JSONStandardCharacter}|\\{JSONEscapeSequence}
+JSONString                      \"{JSONStringCharacter}*\"
+
+/* for errors */
+
+BadUnicodeEscapeSequence        u[0-9A-Fa-f]{0,3}[^0-9A-Fa-f"]
+BadJSONEscapeSequence           [^"\\/bfnrtu]|{BadUnicodeEscapeSequence}
+ControlCharacter                [\x00-\x1f]
+ControlCharacterFill            [^"\\]|\\["\\/bfnrtu]
+
+%{
+/* This code run each time a pattern is matched. It updates the location
+   by moving it ahead by yyleng bytes. yyleng specifies the length of the
+   currently matched token. */
+#define YY_USER_ACTION  driver.loc_.columns(yyleng);
+%}
+
+%%
+
+%{
+    /* This part of the code is copied over to the verbatim to the top
+       of the generated yylex function. Explanation:
+       http://www.gnu.org/software/bison/manual/html_node/Multiple-start_002dsymbols.html */
+
+    /* Code run each time yylex is called. */
+    driver.loc_.step();
+
+    /* We currently have 3 points of entries defined:
+       START_JSON - which expects any valid JSON
+       START_NETCONF - which expects full configuration (with outer map and Netconf
+                     object in it.
+       START_SUB_NETCONF - which expects only content of the Netconf, this is
+                         primarily useful for testing. */
+    if (start_token_flag) {
+        start_token_flag = false;
+        switch (start_token_value) {
+        case ParserContext::PARSER_JSON:
+        default:
+            return NetconfParser::make_START_JSON(driver.loc_);
+        case ParserContext::PARSER_NETCONF:
+            return NetconfParser::make_START_NETCONF(driver.loc_);
+        case ParserContext::PARSER_SUB_NETCONF:
+            return NetconfParser::make_START_SUB_NETCONF(driver.loc_);
+        }
+    }
+%}
+
+#.* ;
+
+"//"(.*) ;
+
+"/*" {
+  BEGIN(COMMENT);
+  comment_start_line = driver.loc_.end.line;;
+}
+
+<COMMENT>"*/" BEGIN(INITIAL);
+<COMMENT>. ;
+<COMMENT><<EOF>> {
+    isc_throw(ParseError, "Comment not closed. (/* in line " << comment_start_line);
+}
+
+"<?" BEGIN(DIR_ENTER);
+<DIR_ENTER>"include" BEGIN(DIR_INCLUDE);
+<DIR_INCLUDE>\"([^\"\n])+\" {
+    /* Include directive. */
+
+    /* Extract the filename. */
+    std::string tmp(yytext+1);
+    tmp.resize(tmp.size() - 1);
+
+    driver.includeFile(tmp);
+}
+<DIR_ENTER,DIR_INCLUDE,DIR_EXIT><<EOF>> {
+    isc_throw(ParseError, "Directive not closed.");
+}
+<DIR_EXIT>"?>" BEGIN(INITIAL);
+
+
+<*>{blank}+   {
+    /* Ok, we found a with space. Let's ignore it and update loc variable. */
+    driver.loc_.step();
+}
+
+<*>[\n]+      {
+    /* Newline found. Let's update the location and continue. */
+    driver.loc_.lines(yyleng);
+    driver.loc_.step();
+}
+
+
+\"Netconf\" {
+    switch(driver.ctx_) {
+    case ParserContext::CONFIG:
+        return NetconfParser::make_NETCONF(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("Netconf", driver.loc_);
+    }
+}
+
+\"user-context\" {
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+    case ParserContext::SERVER:
+    case ParserContext::CONTROL_SOCKET:
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_USER_CONTEXT(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("user-context", driver.loc_);
+    }
+}
+
+\"comment\" {
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+    case ParserContext::SERVER:
+    case ParserContext::CONTROL_SOCKET:
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_COMMENT(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("comment", driver.loc_);
+    }
+}
+
+\"boot-update\" {
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+    case ParserContext::SERVER:
+        return NetconfParser::make_BOOT_UPDATE(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("boot-update", driver.loc_);
+    }
+}
+
+\"subscribe-changes\" {
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+    case ParserContext::SERVER:
+        return NetconfParser::make_SUBSCRIBE_CHANGES(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("subscribe-changes", driver.loc_);
+    }
+}
+
+\"validate-changes\" {
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+    case ParserContext::SERVER:
+        return NetconfParser::make_VALIDATE_CHANGES(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("validate-changes", driver.loc_);
+    }
+}
+
+\"managed-servers\" {
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+        return NetconfParser::make_MANAGED_SERVERS(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("managed-servers", driver.loc_);
+    }
+}
+
+\"dhcp4\" {
+    switch(driver.ctx_) {
+    case ParserContext::MANAGED_SERVERS:
+        return NetconfParser::make_DHCP4_SERVER(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("dhcp4", driver.loc_);
+    }
+}
+
+\"dhcp6\" {
+    switch(driver.ctx_) {
+    case ParserContext::MANAGED_SERVERS:
+        return NetconfParser::make_DHCP6_SERVER(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("dhcp6", driver.loc_);
+    }
+}
+
+\"d2\" {
+    switch(driver.ctx_) {
+    case ParserContext::MANAGED_SERVERS:
+        return NetconfParser::make_D2_SERVER(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("d2", driver.loc_);
+    }
+}
+
+\"ca\" {
+    switch(driver.ctx_) {
+    case ParserContext::MANAGED_SERVERS:
+        return NetconfParser::make_CA_SERVER(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("ca", driver.loc_);
+    }
+}
+
+\"model\" {
+    switch(driver.ctx_) {
+    case ParserContext::SERVER:
+        return NetconfParser::make_MODEL(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("model", driver.loc_);
+    }
+}
+
+\"control-socket\" {
+    switch(driver.ctx_) {
+    case ParserContext::SERVER:
+        return NetconfParser::make_CONTROL_SOCKET(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("control-socket", driver.loc_);
+    }
+}
+
+\"unix\" {
+    switch(driver.ctx_) {
+    case ParserContext::SOCKET_TYPE:
+        return NetconfParser::make_UNIX(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("unix", driver.loc_);
+    }
+}
+
+\"http\" {
+    switch(driver.ctx_) {
+    case ParserContext::SOCKET_TYPE:
+        return NetconfParser::make_HTTP(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("http", driver.loc_);
+    }
+}
+
+\"stdout\" {
+    switch(driver.ctx_) {
+    case ParserContext::SOCKET_TYPE:
+        return NetconfParser::make_STDOUT(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("stdout", driver.loc_);
+    }
+}
+
+\"socket-type\" {
+    switch(driver.ctx_) {
+    case ParserContext::CONTROL_SOCKET:
+        return NetconfParser::make_SOCKET_TYPE(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("socket-type", driver.loc_);
+    }
+}
+
+\"socket-name\" {
+    switch(driver.ctx_) {
+    case ParserContext::CONTROL_SOCKET:
+        return NetconfParser::make_SOCKET_NAME(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("socket-name", driver.loc_);
+    }
+}
+
+\"socket-url\" {
+    switch(driver.ctx_) {
+    case ParserContext::CONTROL_SOCKET:
+        return NetconfParser::make_SOCKET_URL(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("socket-url", driver.loc_);
+    }
+}
+
+\"hooks-libraries\" {
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+        return NetconfParser::make_HOOKS_LIBRARIES(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("hooks-libraries", driver.loc_);
+    }
+}
+
+\"library\" {
+    switch(driver.ctx_) {
+    case ParserContext::HOOKS_LIBRARIES:
+        return NetconfParser::make_LIBRARY(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("library", driver.loc_);
+    }
+}
+
+\"parameters\" {
+    switch(driver.ctx_) {
+    case ParserContext::HOOKS_LIBRARIES:
+        return NetconfParser::make_PARAMETERS(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("parameters", driver.loc_);
+    }
+}
+
+\"loggers\" {
+    switch(driver.ctx_) {
+    case ParserContext::NETCONF:
+        return NetconfParser::make_LOGGERS(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("loggers", driver.loc_);
+    }
+}
+
+\"name\" {
+    switch(driver.ctx_) {
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_NAME(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("name", driver.loc_);
+    }
+}
+
+\"output_options\" {
+    switch(driver.ctx_) {
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_OUTPUT_OPTIONS(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("output_options", driver.loc_);
+    }
+}
+
+\"output\" {
+    switch(driver.ctx_) {
+    case ParserContext::OUTPUT_OPTIONS:
+        return NetconfParser::make_OUTPUT(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("output", driver.loc_);
+    }
+}
+
+\"flush\" {
+    switch(driver.ctx_) {
+    case ParserContext::OUTPUT_OPTIONS:
+        return NetconfParser::make_FLUSH(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("flush", driver.loc_);
+    }
+}
+
+\"maxsize\" {
+    switch(driver.ctx_) {
+    case ParserContext::OUTPUT_OPTIONS:
+        return NetconfParser::make_MAXSIZE(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("maxsize", driver.loc_);
+    }
+}
+
+\"maxver\" {
+    switch(driver.ctx_) {
+    case ParserContext::OUTPUT_OPTIONS:
+        return NetconfParser::make_MAXVER(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("maxver", driver.loc_);
+    }
+}
+
+\"pattern\" {
+    switch(driver.ctx_) {
+    case ParserContext::OUTPUT_OPTIONS:
+        return NetconfParser::make_PATTERN(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("pattern", driver.loc_);
+    }
+}
+
+\"debuglevel\" {
+    switch(driver.ctx_) {
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_DEBUGLEVEL(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("debuglevel", driver.loc_);
+    }
+}
+
+\"severity\" {
+    switch(driver.ctx_) {
+    case ParserContext::LOGGERS:
+        return NetconfParser::make_SEVERITY(driver.loc_);
+    default:
+        return NetconfParser::make_STRING("severity", driver.loc_);
+    }
+}
+
+{JSONString} {
+    /* A string has been matched. It contains the actual string and single quotes.
+       We need to get those quotes out of the way and just use its content, e.g.
+       for 'foo' we should get foo */
+    std::string raw(yytext+1);
+    size_t len = raw.size() - 1;
+    raw.resize(len);
+    std::string decoded;
+    decoded.reserve(len);
+    for (size_t pos = 0; pos < len; ++pos) {
+        int b = 0;
+        char c = raw[pos];
+        switch (c) {
+        case '"':
+            /* impossible condition */
+            driver.error(driver.loc_, "Bad quote in \"" + raw + "\"");
+            break;
+        case '\\':
+            ++pos;
+            if (pos >= len) {
+                /* impossible condition */
+                driver.error(driver.loc_, "Overflow escape in \"" + raw + "\"");
+            }
+            c = raw[pos];
+            switch (c) {
+            case '"':
+            case '\\':
+            case '/':
+                decoded.push_back(c);
+                break;
+            case 'b':
+                decoded.push_back('\b');
+                break;
+            case 'f':
+                decoded.push_back('\f');
+                break;
+            case 'n':
+                decoded.push_back('\n');
+                break;
+            case 'r':
+                decoded.push_back('\r');
+                break;
+            case 't':
+                decoded.push_back('\t');
+                break;
+            case 'u':
+                /* support only \u0000 to \u00ff */
+                ++pos;
+                if (pos + 4 > len) {
+                    /* impossible condition */
+                    driver.error(driver.loc_,
+                                 "Overflow unicode escape in \"" + raw + "\"");
+                }
+                if ((raw[pos] != '0') || (raw[pos + 1] != '0')) {
+                    driver.error(driver.loc_,
+                    "Unsupported unicode escape in \"" + raw + "\"",
+                    pos + 1);
+                }
+                pos += 2;
+                c = raw[pos];
+                if ((c >= '0') && (c <= '9')) {
+                    b = (c - '0') << 4;
+                } else if ((c >= 'A') && (c <= 'F')) {
+                    b = (c - 'A' + 10) << 4;
+                } else if ((c >= 'a') && (c <= 'f')) {
+                    b = (c - 'a' + 10) << 4;
+                } else {
+                    /* impossible condition */
+                    driver.error(driver.loc_, "Not hexadecimal in unicode escape in \"" + raw + "\"");
+                }
+                pos++;
+                c = raw[pos];
+                if ((c >= '0') && (c <= '9')) {
+                    b |= c - '0';
+                } else if ((c >= 'A') && (c <= 'F')) {
+                    b |= c - 'A' + 10;
+                } else if ((c >= 'a') && (c <= 'f')) {
+                    b |= c - 'a' + 10;
+                } else {
+                    /* impossible condition */
+                    driver.error(driver.loc_, "Not hexadecimal in unicode escape in \"" + raw + "\"");
+                }
+                decoded.push_back(static_cast<char>(b & 0xff));
+                break;
+            default:
+                /* impossible condition */
+                driver.error(driver.loc_, "Bad escape in \"" + raw + "\"");
+            }
+            break;
+        default:
+            if ((c >= 0) && (c < 0x20)) {
+                /* impossible condition */
+                driver.error(driver.loc_, "Invalid control in \"" + raw + "\"");
+            }
+            decoded.push_back(c);
+        }
+    }
+
+    return NetconfParser::make_STRING(decoded, driver.loc_);
+}
+
+\"{JSONStringCharacter}*{ControlCharacter}{ControlCharacterFill}*\" {
+    /* Bad string with a forbidden control character inside */
+    std::string raw(yytext+1);
+    size_t len = raw.size() - 1;
+    size_t pos = 0;
+    for (; pos < len; ++pos) {
+        char c = raw[pos];
+        if ((c >= 0) && (c < 0x20)) {
+            break;
+        }
+    }
+    driver.error(driver.loc_,
+                 "Invalid control in " + std::string(yytext),
+                 pos + 1);
+}
+
+\"{JSONStringCharacter}*\\{BadJSONEscapeSequence}[^"]*\" {
+    /* Bad string with a bad escape inside */
+    std::string raw(yytext+1);
+    size_t len = raw.size() - 1;
+    size_t pos = 0;
+    bool found = false;
+    for (; pos < len; ++pos) {
+        if (found) {
+            break;
+        }
+        char c = raw[pos];
+        if (c == '\\') {
+            ++pos;
+            c = raw[pos];
+            switch (c) {
+            case '"':
+            case '\\':
+            case '/':
+            case 'b':
+            case 'f':
+            case 'n':
+            case 'r':
+            case 't':
+                break;
+            case 'u':
+                if ((pos + 4 > len) ||
+                    !std::isxdigit(raw[pos + 1]) ||
+                    !std::isxdigit(raw[pos + 2]) ||
+                    !std::isxdigit(raw[pos + 3]) ||
+                    !std::isxdigit(raw[pos + 4])) {
+                    found = true;
+                }
+                break;
+            default:
+                found = true;
+                break;
+            }
+        }
+    }
+    /* The rule stops on the first " including on \" so add ... in this case */
+    std::string trailer = "";
+    if (raw[len - 1] == '\\') {
+        trailer = "...";
+    }
+    driver.error(driver.loc_,
+                 "Bad escape in " + std::string(yytext) + trailer,
+                 pos);
+}
+
+\"{JSONStringCharacter}*\\\" {
+    /* Bad string with an open escape at the end */
+    std::string raw(yytext+1);
+    driver.error(driver.loc_,
+                 "Overflow escape in " + std::string(yytext),
+                 raw.size() + 1);
+}
+
+\"{JSONStringCharacter}*\\u[0-9A-Fa-f]{0,3}\" {
+    /* Bad string with an open unicode escape at the end */
+    std::string raw(yytext+1);
+    size_t pos = raw.size() - 1;
+    for (; pos > 0; --pos) {
+        char c = raw[pos];
+        if (c == 'u') {
+            break;
+        }
+    }
+    driver.error(driver.loc_,
+                 "Overflow unicode escape in " + std::string(yytext),
+                 pos + 1);
+}
+
+"["    { return NetconfParser::make_LSQUARE_BRACKET(driver.loc_); }
+"]"    { return NetconfParser::make_RSQUARE_BRACKET(driver.loc_); }
+"{"    { return NetconfParser::make_LCURLY_BRACKET(driver.loc_); }
+"}"    { return NetconfParser::make_RCURLY_BRACKET(driver.loc_); }
+","    { return NetconfParser::make_COMMA(driver.loc_); }
+":"    { return NetconfParser::make_COLON(driver.loc_); }
+
+{int} {
+    /* An integer was found. */
+    std::string tmp(yytext);
+    int64_t integer = 0;
+    try {
+        /* In substring we want to use negative values (e.g. -1).
+           In enterprise-id we need to use values up to 0xffffffff.
+           To cover both of those use cases, we need at least
+           int64_t. */
+        integer = boost::lexical_cast<int64_t>(tmp);
+    } catch (const boost::bad_lexical_cast &) {
+        driver.error(driver.loc_, "Failed to convert " + tmp + " to an integer.");
+    }
+
+    /* The parser needs the string form as double conversion is no lossless */
+    return NetconfParser::make_INTEGER(integer, driver.loc_);
+}
+
+[-+]?[0-9]*\.?[0-9]*([eE][-+]?[0-9]+)? {
+    /* A floating point was found. */
+    std::string tmp(yytext);
+    double fp = 0.0;
+    try {
+        fp = boost::lexical_cast<double>(tmp);
+    } catch (const boost::bad_lexical_cast &) {
+        driver.error(driver.loc_, "Failed to convert " + tmp + " to a floating point.");
+    }
+
+    return NetconfParser::make_FLOAT(fp, driver.loc_);
+}
+
+true|false {
+    string tmp(yytext);
+    return NetconfParser::make_BOOLEAN(tmp == "true", driver.loc_);
+}
+
+null {
+   return NetconfParser::make_NULL_TYPE(driver.loc_);
+}
+
+(?i:true) driver.error (driver.loc_, "JSON true reserved keyword is lower case only");
+
+(?i:false) driver.error (driver.loc_, "JSON false reserved keyword is lower case only");
+
+(?i:null) driver.error (driver.loc_, "JSON null reserved keyword is lower case only");
+
+<*>.   driver.error (driver.loc_, "Invalid character: " + std::string(yytext));
+
+<<EOF>> {
+    if (driver.states_.empty()) {
+        return NetconfParser::make_END(driver.loc_);
+    }
+    driver.loc_ = driver.locs_.back();
+    driver.locs_.pop_back();
+    driver.file_ = driver.files_.back();
+    driver.files_.pop_back();
+    if (driver.sfile_) {
+        fclose(driver.sfile_);
+        driver.sfile_ = 0;
+    }
+    if (!driver.sfiles_.empty()) {
+        driver.sfile_ = driver.sfiles_.back();
+        driver.sfiles_.pop_back();
+    }
+    netconf__delete_buffer(YY_CURRENT_BUFFER);
+    netconf__switch_to_buffer(driver.states_.back());
+    driver.states_.pop_back();
+
+    BEGIN(DIR_EXIT);
+}
+
+%%
+
+using namespace isc::dhcp;
+
+void
+ParserContext::scanStringBegin(const std::string& str, ParserType parser_type)
+{
+    start_token_flag = true;
+    start_token_value = parser_type;
+
+    file_ = "<string>";
+    sfile_ = 0;
+    loc_.initialize(&file_);
+    yy_flex_debug = trace_scanning_;
+    YY_BUFFER_STATE buffer;
+    buffer = netconf__scan_bytes(str.c_str(), str.size());
+    if (!buffer) {
+        fatal("cannot scan string");
+        /* fatal() throws an exception so this can't be reached */
+    }
+}
+
+void
+ParserContext::scanFileBegin(FILE * f,
+                             const std::string& filename,
+                             ParserType parser_type)
+{
+    start_token_flag = true;
+    start_token_value = parser_type;
+
+    file_ = filename;
+    sfile_ = f;
+    loc_.initialize(&file_);
+    yy_flex_debug = trace_scanning_;
+    YY_BUFFER_STATE buffer;
+
+    /* See netconf_lexer.cc header for available definitions */
+    buffer = netconf__create_buffer(f, 65536 /*buffer size*/);
+    if (!buffer) {
+        fatal("cannot scan file " + filename);
+    }
+    netconf__switch_to_buffer(buffer);
+}
+
+void
+ParserContext::scanEnd() {
+    if (sfile_)
+        fclose(sfile_);
+    sfile_ = 0;
+    static_cast<void>(netconf_lex_destroy());
+    /* Close files */
+    while (!sfiles_.empty()) {
+        FILE* f = sfiles_.back();
+        if (f) {
+            fclose(f);
+        }
+        sfiles_.pop_back();
+    }
+    /* Delete states */
+    while (!states_.empty()) {
+        netconf__delete_buffer(states_.back());
+        states_.pop_back();
+    }
+}
+
+void
+ParserContext::includeFile(const std::string& filename) {
+    if (states_.size() > 10) {
+        fatal("Too many nested include.");
+    }
+
+    FILE* f = fopen(filename.c_str(), "r");
+    if (!f) {
+        fatal("Can't open include file " + filename);
+    }
+    if (sfile_) {
+        sfiles_.push_back(sfile_);
+    }
+    sfile_ = f;
+    states_.push_back(YY_CURRENT_BUFFER);
+    YY_BUFFER_STATE buffer;
+    buffer = netconf__create_buffer(f, 65536 /*buffer size*/);
+    if (!buffer) {
+        fatal( "Can't scan include file " + filename);
+    }
+    netconf__switch_to_buffer(buffer);
+    files_.push_back(file_);
+    file_ = filename;
+    locs_.push_back(loc_);
+    loc_.initialize(&file_);
+
+    BEGIN(INITIAL);
+}
+
+namespace {
+/** To avoid unused function error */
+class Dummy {
+    /* cppcheck-suppress unusedPrivateFunction */
+    void dummy() { yy_fatal_error("Fix me: how to disable its definition?"); }
+};
+}
+#endif /* !__clang_analyzer__ */
diff --git a/src/bin/netconf/netconf_log.cc b/src/bin/netconf/netconf_log.cc
new file mode 100644
index 0000000..d44463e
--- /dev/null
+++ b/src/bin/netconf/netconf_log.cc
@@ -0,0 +1,28 @@
+// Copyright (C) 2018 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file netconf_log.cc
+/// Contains the loggers used by the netconf agent.
+
+#include <config.h>
+
+#include <netconf/netconf_log.h>
+
+namespace isc {
+namespace netconf {
+
+extern const int NETCONF_DBG_TRACE = isc::log::DBGLVL_TRACE_BASIC;
+extern const int NETCONF_DBG_RESULTS = isc::log::DBGLVL_TRACE_BASIC_DATA;
+extern const int NETCONF_DBG_TRACE_DETAIL_DATA =
+    isc::log::DBGLVL_TRACE_DETAIL_DATA;
+
+const char* NETCONF_LOGGER_NAME = "netconf";
+
+isc::log::Logger netconf_logger(NETCONF_LOGGER_NAME);
+
+} // namespace netconf
+} // namespace isc
+
diff --git a/src/bin/netconf/netconf_log.h b/src/bin/netconf/netconf_log.h
new file mode 100644
index 0000000..72a51d0
--- /dev/null
+++ b/src/bin/netconf/netconf_log.h
@@ -0,0 +1,54 @@
+// Copyright (C) 2018 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file netconf_log.h
+/// Contains declarations for loggers used by the Kea netconf agent.
+
+#ifndef NETCONF_LOG_H
+#define NETCONF_LOG_H
+
+#include <log/logger_support.h>
+#include <log/macros.h>
+#include <netconf/netconf_messages.h>
+
+namespace isc {
+namespace netconf {
+
+///@{
+/// \brief Netconf agent logging levels.
+///
+/// Defines the levels used to output debug messages in the Netconf agent.
+/// Note that higher numbers equate to more verbose (and detailed) output.
+
+/// @brief Traces normal operations.
+///
+/// E.g. sending a command to a server etc.
+extern const int NETCONF_DBG_TRACE;
+
+/// @brief Records the results of the commands.
+///
+/// Using the example of tracing commands to a server, this will just record
+/// the summary results.
+extern const int NETCONF_DBG_RESULTS;
+
+/// @brief Additional information.
+///
+/// Record detailed tracing. This is generally reserved for tracing
+/// configurations from or to a server.
+extern const int NETCONF_DBG_TRACE_DETAIL_DATA;
+
+///@}
+
+/// @brief Defines the name of the root level (default) logger.
+extern const char* NETCONF_LOGGER_NAME;
+
+/// @brief Base logger for the netconf agent
+extern isc::log::Logger netconf_logger;
+
+} // namespace netconf
+} // namespace isc
+
+#endif // NETCONF_LOG_H
diff --git a/src/bin/netconf/netconf_messages.cc b/src/bin/netconf/netconf_messages.cc
new file mode 100644
index 0000000..883e2ee
--- /dev/null
+++ b/src/bin/netconf/netconf_messages.cc
@@ -0,0 +1,91 @@
+// File created from ../../../src/bin/netconf/netconf_messages.mes
+
+#include <cstddef>
+#include <log/message_types.h>
+#include <log/message_initializer.h>
+
+namespace isc {
+namespace netconf {
+
+extern const isc::log::MessageID NETCONF_BOOT_UPDATE_COMPLETED = "NETCONF_BOOT_UPDATE_COMPLETED";
+extern const isc::log::MessageID NETCONF_CONFIG_CHANGED_DETAIL = "NETCONF_CONFIG_CHANGED_DETAIL";
+extern const isc::log::MessageID NETCONF_CONFIG_CHANGE_EVENT = "NETCONF_CONFIG_CHANGE_EVENT";
+extern const isc::log::MessageID NETCONF_CONFIG_CHECK_FAIL = "NETCONF_CONFIG_CHECK_FAIL";
+extern const isc::log::MessageID NETCONF_CONFIG_FAIL = "NETCONF_CONFIG_FAIL";
+extern const isc::log::MessageID NETCONF_CONFIG_SYNTAX_WARNING = "NETCONF_CONFIG_SYNTAX_WARNING";
+extern const isc::log::MessageID NETCONF_FAILED = "NETCONF_FAILED";
+extern const isc::log::MessageID NETCONF_GET_CONFIG = "NETCONF_GET_CONFIG";
+extern const isc::log::MessageID NETCONF_GET_CONFIG_FAILED = "NETCONF_GET_CONFIG_FAILED";
+extern const isc::log::MessageID NETCONF_GET_CONFIG_STARTED = "NETCONF_GET_CONFIG_STARTED";
+extern const isc::log::MessageID NETCONF_LOG_CHANGE_FAIL = "NETCONF_LOG_CHANGE_FAIL";
+extern const isc::log::MessageID NETCONF_MODULE_MISSING_ERR = "NETCONF_MODULE_MISSING_ERR";
+extern const isc::log::MessageID NETCONF_MODULE_MISSING_WARN = "NETCONF_MODULE_MISSING_WARN";
+extern const isc::log::MessageID NETCONF_MODULE_REVISION_ERR = "NETCONF_MODULE_REVISION_ERR";
+extern const isc::log::MessageID NETCONF_MODULE_REVISION_WARN = "NETCONF_MODULE_REVISION_WARN";
+extern const isc::log::MessageID NETCONF_NOTIFICATION_RECEIVED = "NETCONF_NOTIFICATION_RECEIVED";
+extern const isc::log::MessageID NETCONF_RUN_EXIT = "NETCONF_RUN_EXIT";
+extern const isc::log::MessageID NETCONF_SET_CONFIG = "NETCONF_SET_CONFIG";
+extern const isc::log::MessageID NETCONF_SET_CONFIG_FAILED = "NETCONF_SET_CONFIG_FAILED";
+extern const isc::log::MessageID NETCONF_SET_CONFIG_STARTED = "NETCONF_SET_CONFIG_STARTED";
+extern const isc::log::MessageID NETCONF_STARTED = "NETCONF_STARTED";
+extern const isc::log::MessageID NETCONF_SUBSCRIBE_CONFIG = "NETCONF_SUBSCRIBE_CONFIG";
+extern const isc::log::MessageID NETCONF_SUBSCRIBE_CONFIG_FAILED = "NETCONF_SUBSCRIBE_CONFIG_FAILED";
+extern const isc::log::MessageID NETCONF_SUBSCRIBE_NOTIFICATIONS = "NETCONF_SUBSCRIBE_NOTIFICATIONS";
+extern const isc::log::MessageID NETCONF_SUBSCRIBE_NOTIFICATIONS_FAILED = "NETCONF_SUBSCRIBE_NOTIFICATIONS_FAILED";
+extern const isc::log::MessageID NETCONF_UPDATE_CONFIG = "NETCONF_UPDATE_CONFIG";
+extern const isc::log::MessageID NETCONF_UPDATE_CONFIG_COMPLETED = "NETCONF_UPDATE_CONFIG_COMPLETED";
+extern const isc::log::MessageID NETCONF_UPDATE_CONFIG_FAILED = "NETCONF_UPDATE_CONFIG_FAILED";
+extern const isc::log::MessageID NETCONF_UPDATE_CONFIG_STARTED = "NETCONF_UPDATE_CONFIG_STARTED";
+extern const isc::log::MessageID NETCONF_VALIDATE_CONFIG = "NETCONF_VALIDATE_CONFIG";
+extern const isc::log::MessageID NETCONF_VALIDATE_CONFIG_COMPLETED = "NETCONF_VALIDATE_CONFIG_COMPLETED";
+extern const isc::log::MessageID NETCONF_VALIDATE_CONFIG_FAILED = "NETCONF_VALIDATE_CONFIG_FAILED";
+extern const isc::log::MessageID NETCONF_VALIDATE_CONFIG_REJECTED = "NETCONF_VALIDATE_CONFIG_REJECTED";
+extern const isc::log::MessageID NETCONF_VALIDATE_CONFIG_STARTED = "NETCONF_VALIDATE_CONFIG_STARTED";
+
+} // namespace netconf
+} // namespace isc
+
+namespace {
+
+const char* values[] = {
+    "NETCONF_BOOT_UPDATE_COMPLETED", "Boot-update configuration completed for server %1",
+    "NETCONF_CONFIG_CHANGED_DETAIL", "YANG configuration changed: %1",
+    "NETCONF_CONFIG_CHANGE_EVENT", "Received YANG configuration change %1 event",
+    "NETCONF_CONFIG_CHECK_FAIL", "Netconf configuration check failed: %1",
+    "NETCONF_CONFIG_FAIL", "Netconf configuration failed: %1",
+    "NETCONF_CONFIG_SYNTAX_WARNING", "Netconf configuration syntax warning: %1",
+    "NETCONF_FAILED", "application experienced a fatal error: %1",
+    "NETCONF_GET_CONFIG", "got configuration from %1 server: %2",
+    "NETCONF_GET_CONFIG_FAILED", "getting configuration from %1 server failed: %2",
+    "NETCONF_GET_CONFIG_STARTED", "getting configuration from %1 server",
+    "NETCONF_LOG_CHANGE_FAIL", "Netconf configuration change logging failed: %1",
+    "NETCONF_MODULE_MISSING_ERR", "Missing essential module %1 in sysrepo",
+    "NETCONF_MODULE_MISSING_WARN", "Missing module %1 in sysrepo",
+    "NETCONF_MODULE_REVISION_ERR", "Essential module %1 does NOT have the right revision: expected %2, got %3",
+    "NETCONF_MODULE_REVISION_WARN", "Module %1 does NOT have the right revision: expected %2, got %3",
+    "NETCONF_NOTIFICATION_RECEIVED", "Received notification of type %1 for module %1: %2",
+    "NETCONF_RUN_EXIT", "application is exiting the event loop",
+    "NETCONF_SET_CONFIG", "set configuration to %1 server: %2",
+    "NETCONF_SET_CONFIG_FAILED", "setting configuration to %1 server failed: %2",
+    "NETCONF_SET_CONFIG_STARTED", "setting configuration to %1 server",
+    "NETCONF_STARTED", "Netconf (version %1) started",
+    "NETCONF_SUBSCRIBE_CONFIG", "subscribing configuration changes for %1 server with %2 module",
+    "NETCONF_SUBSCRIBE_CONFIG_FAILED", "subscribe configuration changes for %1 server with %2 module failed: %3",
+    "NETCONF_SUBSCRIBE_NOTIFICATIONS", "subscribing to notifications for %1 server with %2 module",
+    "NETCONF_SUBSCRIBE_NOTIFICATIONS_FAILED", "subscribing to notifications for %1 server with %2 module failed: %3",
+    "NETCONF_UPDATE_CONFIG", "updating configuration with %1 server: %2",
+    "NETCONF_UPDATE_CONFIG_COMPLETED", "completed updating configuration for %1 server",
+    "NETCONF_UPDATE_CONFIG_FAILED", "updating configuration with %1 server: %2",
+    "NETCONF_UPDATE_CONFIG_STARTED", "started updating configuration for %1 server",
+    "NETCONF_VALIDATE_CONFIG", "validating configuration with %1 server: %2",
+    "NETCONF_VALIDATE_CONFIG_COMPLETED", "completed validating configuration for %1 server",
+    "NETCONF_VALIDATE_CONFIG_FAILED", "validating configuration with %1 server got an error: %2",
+    "NETCONF_VALIDATE_CONFIG_REJECTED", "validating configuration with %1 server was rejected: %2",
+    "NETCONF_VALIDATE_CONFIG_STARTED", "started validating configuration for %1 server",
+    NULL
+};
+
+const isc::log::MessageInitializer initializer(values);
+
+} // Anonymous namespace
+
diff --git a/src/bin/netconf/netconf_messages.h b/src/bin/netconf/netconf_messages.h
new file mode 100644
index 0000000..df290bb
--- /dev/null
+++ b/src/bin/netconf/netconf_messages.h
@@ -0,0 +1,49 @@
+// File created from ../../../src/bin/netconf/netconf_messages.mes
+
+#ifndef NETCONF_MESSAGES_H
+#define NETCONF_MESSAGES_H
+
+#include <log/message_types.h>
+
+namespace isc {
+namespace netconf {
+
+extern const isc::log::MessageID NETCONF_BOOT_UPDATE_COMPLETED;
+extern const isc::log::MessageID NETCONF_CONFIG_CHANGED_DETAIL;
+extern const isc::log::MessageID NETCONF_CONFIG_CHANGE_EVENT;
+extern const isc::log::MessageID NETCONF_CONFIG_CHECK_FAIL;
+extern const isc::log::MessageID NETCONF_CONFIG_FAIL;
+extern const isc::log::MessageID NETCONF_CONFIG_SYNTAX_WARNING;
+extern const isc::log::MessageID NETCONF_FAILED;
+extern const isc::log::MessageID NETCONF_GET_CONFIG;
+extern const isc::log::MessageID NETCONF_GET_CONFIG_FAILED;
+extern const isc::log::MessageID NETCONF_GET_CONFIG_STARTED;
+extern const isc::log::MessageID NETCONF_LOG_CHANGE_FAIL;
+extern const isc::log::MessageID NETCONF_MODULE_MISSING_ERR;
+extern const isc::log::MessageID NETCONF_MODULE_MISSING_WARN;
+extern const isc::log::MessageID NETCONF_MODULE_REVISION_ERR;
+extern const isc::log::MessageID NETCONF_MODULE_REVISION_WARN;
+extern const isc::log::MessageID NETCONF_NOTIFICATION_RECEIVED;
+extern const isc::log::MessageID NETCONF_RUN_EXIT;
+extern const isc::log::MessageID NETCONF_SET_CONFIG;
+extern const isc::log::MessageID NETCONF_SET_CONFIG_FAILED;
+extern const isc::log::MessageID NETCONF_SET_CONFIG_STARTED;
+extern const isc::log::MessageID NETCONF_STARTED;
+extern const isc::log::MessageID NETCONF_SUBSCRIBE_CONFIG;
+extern const isc::log::MessageID NETCONF_SUBSCRIBE_CONFIG_FAILED;
+extern const isc::log::MessageID NETCONF_SUBSCRIBE_NOTIFICATIONS;
+extern const isc::log::MessageID NETCONF_SUBSCRIBE_NOTIFICATIONS_FAILED;
+extern const isc::log::MessageID NETCONF_UPDATE_CONFIG;
+extern const isc::log::MessageID NETCONF_UPDATE_CONFIG_COMPLETED;
+extern const isc::log::MessageID NETCONF_UPDATE_CONFIG_FAILED;
+extern const isc::log::MessageID NETCONF_UPDATE_CONFIG_STARTED;
+extern const isc::log::MessageID NETCONF_VALIDATE_CONFIG;
+extern const isc::log::MessageID NETCONF_VALIDATE_CONFIG_COMPLETED;
+extern const isc::log::MessageID NETCONF_VALIDATE_CONFIG_FAILED;
+extern const isc::log::MessageID NETCONF_VALIDATE_CONFIG_REJECTED;
+extern const isc::log::MessageID NETCONF_VALIDATE_CONFIG_STARTED;
+
+} // namespace netconf
+} // namespace isc
+
+#endif // NETCONF_MESSAGES_H
diff --git a/src/bin/netconf/netconf_messages.mes b/src/bin/netconf/netconf_messages.mes
new file mode 100644
index 0000000..7883c1d
--- /dev/null
+++ b/src/bin/netconf/netconf_messages.mes
@@ -0,0 +1,173 @@
+# Copyright (C) 2012-2021 Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+$NAMESPACE isc::netconf
+
+% NETCONF_BOOT_UPDATE_COMPLETED Boot-update configuration completed for server %1
+This informational message is issued when the initial configuration
+was retrieved from Netconf and successfully applied to Kea server.
+
+% NETCONF_CONFIG_CHANGED_DETAIL YANG configuration changed: %1
+This debug message indicates a YANG configuration change. The format
+is the change operation (created, modified, deleted or moved) followed
+by xpaths and values of old and new nodes.
+
+% NETCONF_CONFIG_CHANGE_EVENT Received YANG configuration change %1 event
+This informational message is issued when Netconf receives a YANG
+configuration change event. The type of event is printed.
+
+% NETCONF_CONFIG_CHECK_FAIL Netconf configuration check failed: %1
+This error message indicates that Netconf had failed configuration
+check. Details are provided. Additional details may be available
+in earlier log entries, possibly on lower levels.
+
+% NETCONF_CONFIG_FAIL Netconf configuration failed: %1
+This error message indicates that Netconf had failed configuration
+attempt. Details are provided. Additional details may be available
+in earlier log entries, possibly on lower levels.
+
+% NETCONF_CONFIG_SYNTAX_WARNING Netconf configuration syntax warning: %1
+This warning message indicates that the Netconf configuration had a minor
+syntax error. The error was displayed and the configuration parsing resumed.
+
+% NETCONF_FAILED application experienced a fatal error: %1
+This is a fatal error message issued when the Netconf application
+got an unrecoverable error from within the event loop.
+
+% NETCONF_GET_CONFIG got configuration from %1 server: %2
+This debug message indicates that Netconf got the configuration from a
+Kea server. The server name and the retrieved configuration are printed.
+
+% NETCONF_GET_CONFIG_FAILED getting configuration from %1 server failed: %2
+The error message indicates that Netconf got an error getting the
+configuration from a Kea server. Make sure that the server is up and
+running, has appropriate control socket defined and that the controls
+socket configuration on the server matches that of kea-netconf. The
+name of the server and the error are printed.
+
+% NETCONF_GET_CONFIG_STARTED getting configuration from %1 server
+This informational message indicates that Netconf is trying to get the
+configuration from a Kea server.
+
+% NETCONF_LOG_CHANGE_FAIL Netconf configuration change logging failed: %1
+The warning message indicates that the configuration change logging
+encountered an unexpected condition. Details of it will be logged.
+
+% NETCONF_MODULE_MISSING_ERR Missing essential module %1 in sysrepo
+This fatal error message indicates that a module required by Netconf
+configuration is not available in the sysrepo repository.  The name of
+the module is printed.
+
+% NETCONF_MODULE_MISSING_WARN Missing module %1 in sysrepo
+This warning message indicates that a module used by Kea is not
+available in the sysrepo repository. The name of the module is printed.
+
+% NETCONF_MODULE_REVISION_ERR Essential module %1 does NOT have the right revision: expected %2, got %3
+This fatal error message indicates that a module required by Netconf
+configuration is not at the right revision in the sysrepo repository.
+The name, expected and available revisions of the module are printed.
+
+% NETCONF_MODULE_REVISION_WARN Module %1 does NOT have the right revision: expected %2, got %3
+This warning message indicates that a module used by Kea is not at the
+right revision in the sysrepo repository. The name, expected and
+available revisions of the module are printed.
+
+% NETCONF_NOTIFICATION_RECEIVED Received notification of type %1 for module %1: %2
+This informational message logs any YANG notification that has been signaled
+by the server, sent to kea-netconf which then was forwarded to subscribed
+clients. To achieve this, kea-netconf subscribes itself as a client to all
+notifications for the configured module.
+
+% NETCONF_RUN_EXIT application is exiting the event loop
+This is a debug message issued when the Netconf application exits its
+event loop. This is a normal step during kea-netconf shutdown.
+
+% NETCONF_SET_CONFIG set configuration to %1 server: %2
+This debug message indicates that Netconf set the configuration to a
+Kea server. The server name and the applied configuration are printed.
+
+% NETCONF_SET_CONFIG_FAILED setting configuration to %1 server failed: %2
+The error message indicates that Netconf got an error setting the
+configuration to a Kea server. Make sure that the server is up and
+running, has appropriate control socket defined and that the controls
+socket configuration on the server matches that of kea-netconf. The
+name of the server and the error are printed.
+
+% NETCONF_SET_CONFIG_STARTED setting configuration to %1 server
+This informational message indicates that Netconf is trying to set the
+configuration to a Kea server.
+
+% NETCONF_STARTED Netconf (version %1) started
+This informational message indicates that Netconf has processed
+all configuration information and is ready to begin processing.
+The version is also printed.
+
+% NETCONF_SUBSCRIBE_CONFIG subscribing configuration changes for %1 server with %2 module
+This information message indicates that Netconf is trying to subscribe
+configuration changes for a Kea server. The names of the server and
+the module are printed.
+
+% NETCONF_SUBSCRIBE_CONFIG_FAILED subscribe configuration changes for %1 server with %2 module failed: %3
+The error message indicates that Netconf got an error subscribing
+configuration changes for a Kea server. The names of the server and
+the module, and the error are printed.
+
+% NETCONF_SUBSCRIBE_NOTIFICATIONS subscribing to notifications for %1 server with %2 module
+This information message indicates that Netconf is trying to subscribe to
+notifications for a Kea server. The server name and module name are printed.
+
+% NETCONF_SUBSCRIBE_NOTIFICATIONS_FAILED subscribing to notifications for %1 server with %2 module failed: %3
+The error message indicates that Netconf got an error subscribing to
+notifications for a Kea server. The server name, module name and the error are
+printed.
+
+% NETCONF_UPDATE_CONFIG updating configuration with %1 server: %2
+This debug message indicates that Netconf update the configuration
+of a Kea server. The server name and the updated configuration are
+printed.
+
+% NETCONF_UPDATE_CONFIG_COMPLETED completed updating configuration for %1 server
+This informational message indicates that Netconf updated with success the
+configuration of a Kea server.
+
+% NETCONF_UPDATE_CONFIG_FAILED updating configuration with %1 server: %2
+The error message indicates that Netconf got an error updating the
+configuration of a Kea server. This includes a configuration rejected
+by a Kea server when it tried to apply it. The name of the server and
+the error are printed.
+
+% NETCONF_UPDATE_CONFIG_STARTED started updating configuration for %1 server
+This informational message indicates that Netconf is trying to update the
+configuration of a Kea server.
+
+% NETCONF_VALIDATE_CONFIG validating configuration with %1 server: %2
+This debug message indicates that Netconf is validating the configuration
+with a Kea server. The server name and the validated configuration are
+printed.
+
+% NETCONF_VALIDATE_CONFIG_COMPLETED completed validating configuration for %1 server
+This informational message indicates that Netconf validated with success the
+configuration with a Kea server.
+
+% NETCONF_VALIDATE_CONFIG_FAILED validating configuration with %1 server got an error: %2
+The error message indicates that Netconf got an error validating the
+configuration with a Kea server. This message is produced when
+exception is thrown during an attempt to validate received
+configuration. Additional explanation may be provided as a
+parameter. You may also take a look at earlier log messages.  The name
+of the server and the error are printed.
+
+% NETCONF_VALIDATE_CONFIG_REJECTED validating configuration with %1 server was rejected: %2
+The warning message indicates that Netconf got an error validating the
+configuration with a Kea server. This message is printed when the
+configuration was rejected during normal processing. Additional
+explanation may be provided as a parameter. You may also take a look
+at earlier log messages.  The name of the server and the error are
+printed.
+
+% NETCONF_VALIDATE_CONFIG_STARTED started validating configuration for %1 server
+This informational message indicates that Netconf is trying to validate the
+configuration with a Kea server.
diff --git a/src/bin/netconf/netconf_parser.cc b/src/bin/netconf/netconf_parser.cc
new file mode 100644
index 0000000..8fe964d
--- /dev/null
+++ b/src/bin/netconf/netconf_parser.cc
@@ -0,0 +1,2312 @@
+// A Bison parser, made by GNU Bison 3.8.2.
+
+// Skeleton implementation for Bison LALR(1) parsers in C++
+
+// Copyright (C) 2002-2015, 2018-2021 Free Software Foundation, Inc.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+// As a special exception, you may create a larger work that contains
+// part or all of the Bison parser skeleton and distribute that work
+// under terms of your choice, so long as that work isn't itself a
+// parser generator using the skeleton or a modified version thereof
+// as a parser skeleton.  Alternatively, if you modify or redistribute
+// the parser skeleton itself, you may (at your option) remove this
+// special exception, which will cause the skeleton and the resulting
+// Bison output files to be licensed under the GNU General Public
+// License without this special exception.
+
+// This special exception was added by the Free Software Foundation in
+// version 2.2 of Bison.
+
+// DO NOT RELY ON FEATURES THAT ARE NOT DOCUMENTED in the manual,
+// especially those whose name start with YY_ or yy_.  They are
+// private implementation details that can be changed or removed.
+
+
+// Take the name prefix into account.
+#define yylex   netconf_lex
+
+
+
+#include "netconf_parser.h"
+
+
+// Unqualified %code blocks.
+#line 33 "netconf_parser.yy"
+
+#include <netconf/parser_context.h>
+
+#line 52 "netconf_parser.cc"
+
+
+#ifndef YY_
+# if defined YYENABLE_NLS && YYENABLE_NLS
+#  if ENABLE_NLS
+#   include <libintl.h> // FIXME: INFRINGES ON USER NAME SPACE.
+#   define YY_(msgid) dgettext ("bison-runtime", msgid)
+#  endif
+# endif
+# ifndef YY_
+#  define YY_(msgid) msgid
+# endif
+#endif
+
+
+// Whether we are compiled with exception support.
+#ifndef YY_EXCEPTIONS
+# if defined __GNUC__ && !defined __EXCEPTIONS
+#  define YY_EXCEPTIONS 0
+# else
+#  define YY_EXCEPTIONS 1
+# endif
+#endif
+
+#define YYRHSLOC(Rhs, K) ((Rhs)[K].location)
+/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
+   If N is 0, then set CURRENT to the empty location which ends
+   the previous symbol: RHS[0] (always defined).  */
+
+# ifndef YYLLOC_DEFAULT
+#  define YYLLOC_DEFAULT(Current, Rhs, N)                               \
+    do                                                                  \
+      if (N)                                                            \
+        {                                                               \
+          (Current).begin  = YYRHSLOC (Rhs, 1).begin;                   \
+          (Current).end    = YYRHSLOC (Rhs, N).end;                     \
+        }                                                               \
+      else                                                              \
+        {                                                               \
+          (Current).begin = (Current).end = YYRHSLOC (Rhs, 0).end;      \
+        }                                                               \
+    while (false)
+# endif
+
+
+// Enable debugging if requested.
+#if NETCONF_DEBUG
+
+// A pseudo ostream that takes yydebug_ into account.
+# define YYCDEBUG if (yydebug_) (*yycdebug_)
+
+# define YY_SYMBOL_PRINT(Title, Symbol)         \
+  do {                                          \
+    if (yydebug_)                               \
+    {                                           \
+      *yycdebug_ << Title << ' ';               \
+      yy_print_ (*yycdebug_, Symbol);           \
+      *yycdebug_ << '\n';                       \
+    }                                           \
+  } while (false)
+
+# define YY_REDUCE_PRINT(Rule)          \
+  do {                                  \
+    if (yydebug_)                       \
+      yy_reduce_print_ (Rule);          \
+  } while (false)
+
+# define YY_STACK_PRINT()               \
+  do {                                  \
+    if (yydebug_)                       \
+      yy_stack_print_ ();                \
+  } while (false)
+
+#else // !NETCONF_DEBUG
+
+# define YYCDEBUG if (false) std::cerr
+# define YY_SYMBOL_PRINT(Title, Symbol)  YY_USE (Symbol)
+# define YY_REDUCE_PRINT(Rule)           static_cast<void> (0)
+# define YY_STACK_PRINT()                static_cast<void> (0)
+
+#endif // !NETCONF_DEBUG
+
+#define yyerrok         (yyerrstatus_ = 0)
+#define yyclearin       (yyla.clear ())
+
+#define YYACCEPT        goto yyacceptlab
+#define YYABORT         goto yyabortlab
+#define YYERROR         goto yyerrorlab
+#define YYRECOVERING()  (!!yyerrstatus_)
+
+#line 14 "netconf_parser.yy"
+namespace isc { namespace netconf {
+#line 145 "netconf_parser.cc"
+
+  /// Build a parser object.
+  NetconfParser::NetconfParser (isc::netconf::ParserContext& ctx_yyarg)
+#if NETCONF_DEBUG
+    : yydebug_ (false),
+      yycdebug_ (&std::cerr),
+#else
+    :
+#endif
+      ctx (ctx_yyarg)
+  {}
+
+  NetconfParser::~NetconfParser ()
+  {}
+
+  NetconfParser::syntax_error::~syntax_error () YY_NOEXCEPT YY_NOTHROW
+  {}
+
+  /*---------.
+  | symbol.  |
+  `---------*/
+
+
+
+  // by_state.
+  NetconfParser::by_state::by_state () YY_NOEXCEPT
+    : state (empty_state)
+  {}
+
+  NetconfParser::by_state::by_state (const by_state& that) YY_NOEXCEPT
+    : state (that.state)
+  {}
+
+  void
+  NetconfParser::by_state::clear () YY_NOEXCEPT
+  {
+    state = empty_state;
+  }
+
+  void
+  NetconfParser::by_state::move (by_state& that)
+  {
+    state = that.state;
+    that.clear ();
+  }
+
+  NetconfParser::by_state::by_state (state_type s) YY_NOEXCEPT
+    : state (s)
+  {}
+
+  NetconfParser::symbol_kind_type
+  NetconfParser::by_state::kind () const YY_NOEXCEPT
+  {
+    if (state == empty_state)
+      return symbol_kind::S_YYEMPTY;
+    else
+      return YY_CAST (symbol_kind_type, yystos_[+state]);
+  }
+
+  NetconfParser::stack_symbol_type::stack_symbol_type ()
+  {}
+
+  NetconfParser::stack_symbol_type::stack_symbol_type (YY_RVREF (stack_symbol_type) that)
+    : super_type (YY_MOVE (that.state), YY_MOVE (that.location))
+  {
+    switch (that.kind ())
+    {
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_map_value: // map_value
+      case symbol_kind::S_socket_type_value: // socket_type_value
+        value.YY_MOVE_OR_COPY< ElementPtr > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_BOOLEAN: // "boolean"
+        value.YY_MOVE_OR_COPY< bool > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_FLOAT: // "floating point"
+        value.YY_MOVE_OR_COPY< double > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_INTEGER: // "integer"
+        value.YY_MOVE_OR_COPY< int64_t > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_STRING: // "constant string"
+        value.YY_MOVE_OR_COPY< std::string > (YY_MOVE (that.value));
+        break;
+
+      default:
+        break;
+    }
+
+#if 201103L <= YY_CPLUSPLUS
+    // that is emptied.
+    that.state = empty_state;
+#endif
+  }
+
+  NetconfParser::stack_symbol_type::stack_symbol_type (state_type s, YY_MOVE_REF (symbol_type) that)
+    : super_type (s, YY_MOVE (that.location))
+  {
+    switch (that.kind ())
+    {
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_map_value: // map_value
+      case symbol_kind::S_socket_type_value: // socket_type_value
+        value.move< ElementPtr > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_BOOLEAN: // "boolean"
+        value.move< bool > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_FLOAT: // "floating point"
+        value.move< double > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_INTEGER: // "integer"
+        value.move< int64_t > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_STRING: // "constant string"
+        value.move< std::string > (YY_MOVE (that.value));
+        break;
+
+      default:
+        break;
+    }
+
+    // that is emptied.
+    that.kind_ = symbol_kind::S_YYEMPTY;
+  }
+
+#if YY_CPLUSPLUS < 201103L
+  NetconfParser::stack_symbol_type&
+  NetconfParser::stack_symbol_type::operator= (const stack_symbol_type& that)
+  {
+    state = that.state;
+    switch (that.kind ())
+    {
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_map_value: // map_value
+      case symbol_kind::S_socket_type_value: // socket_type_value
+        value.copy< ElementPtr > (that.value);
+        break;
+
+      case symbol_kind::S_BOOLEAN: // "boolean"
+        value.copy< bool > (that.value);
+        break;
+
+      case symbol_kind::S_FLOAT: // "floating point"
+        value.copy< double > (that.value);
+        break;
+
+      case symbol_kind::S_INTEGER: // "integer"
+        value.copy< int64_t > (that.value);
+        break;
+
+      case symbol_kind::S_STRING: // "constant string"
+        value.copy< std::string > (that.value);
+        break;
+
+      default:
+        break;
+    }
+
+    location = that.location;
+    return *this;
+  }
+
+  NetconfParser::stack_symbol_type&
+  NetconfParser::stack_symbol_type::operator= (stack_symbol_type& that)
+  {
+    state = that.state;
+    switch (that.kind ())
+    {
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_map_value: // map_value
+      case symbol_kind::S_socket_type_value: // socket_type_value
+        value.move< ElementPtr > (that.value);
+        break;
+
+      case symbol_kind::S_BOOLEAN: // "boolean"
+        value.move< bool > (that.value);
+        break;
+
+      case symbol_kind::S_FLOAT: // "floating point"
+        value.move< double > (that.value);
+        break;
+
+      case symbol_kind::S_INTEGER: // "integer"
+        value.move< int64_t > (that.value);
+        break;
+
+      case symbol_kind::S_STRING: // "constant string"
+        value.move< std::string > (that.value);
+        break;
+
+      default:
+        break;
+    }
+
+    location = that.location;
+    // that is emptied.
+    that.state = empty_state;
+    return *this;
+  }
+#endif
+
+  template <typename Base>
+  void
+  NetconfParser::yy_destroy_ (const char* yymsg, basic_symbol<Base>& yysym) const
+  {
+    if (yymsg)
+      YY_SYMBOL_PRINT (yymsg, yysym);
+  }
+
+#if NETCONF_DEBUG
+  template <typename Base>
+  void
+  NetconfParser::yy_print_ (std::ostream& yyo, const basic_symbol<Base>& yysym) const
+  {
+    std::ostream& yyoutput = yyo;
+    YY_USE (yyoutput);
+    if (yysym.empty ())
+      yyo << "empty symbol";
+    else
+      {
+        symbol_kind_type yykind = yysym.kind ();
+        yyo << (yykind < YYNTOKENS ? "token" : "nterm")
+            << ' ' << yysym.name () << " ("
+            << yysym.location << ": ";
+        switch (yykind)
+    {
+      case symbol_kind::S_STRING: // "constant string"
+#line 107 "netconf_parser.yy"
+                 { yyoutput << yysym.value.template as < std::string > (); }
+#line 384 "netconf_parser.cc"
+        break;
+
+      case symbol_kind::S_INTEGER: // "integer"
+#line 107 "netconf_parser.yy"
+                 { yyoutput << yysym.value.template as < int64_t > (); }
+#line 390 "netconf_parser.cc"
+        break;
+
+      case symbol_kind::S_FLOAT: // "floating point"
+#line 107 "netconf_parser.yy"
+                 { yyoutput << yysym.value.template as < double > (); }
+#line 396 "netconf_parser.cc"
+        break;
+
+      case symbol_kind::S_BOOLEAN: // "boolean"
+#line 107 "netconf_parser.yy"
+                 { yyoutput << yysym.value.template as < bool > (); }
+#line 402 "netconf_parser.cc"
+        break;
+
+      case symbol_kind::S_value: // value
+#line 107 "netconf_parser.yy"
+                 { yyoutput << yysym.value.template as < ElementPtr > (); }
+#line 408 "netconf_parser.cc"
+        break;
+
+      case symbol_kind::S_map_value: // map_value
+#line 107 "netconf_parser.yy"
+                 { yyoutput << yysym.value.template as < ElementPtr > (); }
+#line 414 "netconf_parser.cc"
+        break;
+
+      case symbol_kind::S_socket_type_value: // socket_type_value
+#line 107 "netconf_parser.yy"
+                 { yyoutput << yysym.value.template as < ElementPtr > (); }
+#line 420 "netconf_parser.cc"
+        break;
+
+      default:
+        break;
+    }
+        yyo << ')';
+      }
+  }
+#endif
+
+  void
+  NetconfParser::yypush_ (const char* m, YY_MOVE_REF (stack_symbol_type) sym)
+  {
+    if (m)
+      YY_SYMBOL_PRINT (m, sym);
+    yystack_.push (YY_MOVE (sym));
+  }
+
+  void
+  NetconfParser::yypush_ (const char* m, state_type s, YY_MOVE_REF (symbol_type) sym)
+  {
+#if 201103L <= YY_CPLUSPLUS
+    yypush_ (m, stack_symbol_type (s, std::move (sym)));
+#else
+    stack_symbol_type ss (s, sym);
+    yypush_ (m, ss);
+#endif
+  }
+
+  void
+  NetconfParser::yypop_ (int n) YY_NOEXCEPT
+  {
+    yystack_.pop (n);
+  }
+
+#if NETCONF_DEBUG
+  std::ostream&
+  NetconfParser::debug_stream () const
+  {
+    return *yycdebug_;
+  }
+
+  void
+  NetconfParser::set_debug_stream (std::ostream& o)
+  {
+    yycdebug_ = &o;
+  }
+
+
+  NetconfParser::debug_level_type
+  NetconfParser::debug_level () const
+  {
+    return yydebug_;
+  }
+
+  void
+  NetconfParser::set_debug_level (debug_level_type l)
+  {
+    yydebug_ = l;
+  }
+#endif // NETCONF_DEBUG
+
+  NetconfParser::state_type
+  NetconfParser::yy_lr_goto_state_ (state_type yystate, int yysym)
+  {
+    int yyr = yypgoto_[yysym - YYNTOKENS] + yystate;
+    if (0 <= yyr && yyr <= yylast_ && yycheck_[yyr] == yystate)
+      return yytable_[yyr];
+    else
+      return yydefgoto_[yysym - YYNTOKENS];
+  }
+
+  bool
+  NetconfParser::yy_pact_value_is_default_ (int yyvalue) YY_NOEXCEPT
+  {
+    return yyvalue == yypact_ninf_;
+  }
+
+  bool
+  NetconfParser::yy_table_value_is_error_ (int yyvalue) YY_NOEXCEPT
+  {
+    return yyvalue == yytable_ninf_;
+  }
+
+  int
+  NetconfParser::operator() ()
+  {
+    return parse ();
+  }
+
+  int
+  NetconfParser::parse ()
+  {
+    int yyn;
+    /// Length of the RHS of the rule being reduced.
+    int yylen = 0;
+
+    // Error handling.
+    int yynerrs_ = 0;
+    int yyerrstatus_ = 0;
+
+    /// The lookahead symbol.
+    symbol_type yyla;
+
+    /// The locations where the error started and ended.
+    stack_symbol_type yyerror_range[3];
+
+    /// The return value of parse ().
+    int yyresult;
+
+#if YY_EXCEPTIONS
+    try
+#endif // YY_EXCEPTIONS
+      {
+    YYCDEBUG << "Starting parse\n";
+
+
+    /* Initialize the stack.  The initial state will be set in
+       yynewstate, since the latter expects the semantical and the
+       location values to have been already stored, initialize these
+       stacks with a primary value.  */
+    yystack_.clear ();
+    yypush_ (YY_NULLPTR, 0, YY_MOVE (yyla));
+
+  /*-----------------------------------------------.
+  | yynewstate -- push a new symbol on the stack.  |
+  `-----------------------------------------------*/
+  yynewstate:
+    YYCDEBUG << "Entering state " << int (yystack_[0].state) << '\n';
+    YY_STACK_PRINT ();
+
+    // Accept?
+    if (yystack_[0].state == yyfinal_)
+      YYACCEPT;
+
+    goto yybackup;
+
+
+  /*-----------.
+  | yybackup.  |
+  `-----------*/
+  yybackup:
+    // Try to take a decision without lookahead.
+    yyn = yypact_[+yystack_[0].state];
+    if (yy_pact_value_is_default_ (yyn))
+      goto yydefault;
+
+    // Read a lookahead token.
+    if (yyla.empty ())
+      {
+        YYCDEBUG << "Reading a token\n";
+#if YY_EXCEPTIONS
+        try
+#endif // YY_EXCEPTIONS
+          {
+            symbol_type yylookahead (yylex (ctx));
+            yyla.move (yylookahead);
+          }
+#if YY_EXCEPTIONS
+        catch (const syntax_error& yyexc)
+          {
+            YYCDEBUG << "Caught exception: " << yyexc.what() << '\n';
+            error (yyexc);
+            goto yyerrlab1;
+          }
+#endif // YY_EXCEPTIONS
+      }
+    YY_SYMBOL_PRINT ("Next token is", yyla);
+
+    if (yyla.kind () == symbol_kind::S_YYerror)
+    {
+      // The scanner already issued an error message, process directly
+      // to error recovery.  But do not keep the error token as
+      // lookahead, it is too special and may lead us to an endless
+      // loop in error recovery. */
+      yyla.kind_ = symbol_kind::S_YYUNDEF;
+      goto yyerrlab1;
+    }
+
+    /* If the proper action on seeing token YYLA.TYPE is to reduce or
+       to detect an error, take that action.  */
+    yyn += yyla.kind ();
+    if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yyla.kind ())
+      {
+        goto yydefault;
+      }
+
+    // Reduce or error.
+    yyn = yytable_[yyn];
+    if (yyn <= 0)
+      {
+        if (yy_table_value_is_error_ (yyn))
+          goto yyerrlab;
+        yyn = -yyn;
+        goto yyreduce;
+      }
+
+    // Count tokens shifted since error; after three, turn off error status.
+    if (yyerrstatus_)
+      --yyerrstatus_;
+
+    // Shift the lookahead token.
+    yypush_ ("Shifting", state_type (yyn), YY_MOVE (yyla));
+    goto yynewstate;
+
+
+  /*-----------------------------------------------------------.
+  | yydefault -- do the default action for the current state.  |
+  `-----------------------------------------------------------*/
+  yydefault:
+    yyn = yydefact_[+yystack_[0].state];
+    if (yyn == 0)
+      goto yyerrlab;
+    goto yyreduce;
+
+
+  /*-----------------------------.
+  | yyreduce -- do a reduction.  |
+  `-----------------------------*/
+  yyreduce:
+    yylen = yyr2_[yyn];
+    {
+      stack_symbol_type yylhs;
+      yylhs.state = yy_lr_goto_state_ (yystack_[yylen].state, yyr1_[yyn]);
+      /* Variants are always initialized to an empty instance of the
+         correct type. The default '$$ = $1' action is NOT applied
+         when using variants.  */
+      switch (yyr1_[yyn])
+    {
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_map_value: // map_value
+      case symbol_kind::S_socket_type_value: // socket_type_value
+        yylhs.value.emplace< ElementPtr > ();
+        break;
+
+      case symbol_kind::S_BOOLEAN: // "boolean"
+        yylhs.value.emplace< bool > ();
+        break;
+
+      case symbol_kind::S_FLOAT: // "floating point"
+        yylhs.value.emplace< double > ();
+        break;
+
+      case symbol_kind::S_INTEGER: // "integer"
+        yylhs.value.emplace< int64_t > ();
+        break;
+
+      case symbol_kind::S_STRING: // "constant string"
+        yylhs.value.emplace< std::string > ();
+        break;
+
+      default:
+        break;
+    }
+
+
+      // Default location.
+      {
+        stack_type::slice range (yystack_, yylen);
+        YYLLOC_DEFAULT (yylhs.location, range, yylen);
+        yyerror_range[1].location = yylhs.location;
+      }
+
+      // Perform the reduction.
+      YY_REDUCE_PRINT (yyn);
+#if YY_EXCEPTIONS
+      try
+#endif // YY_EXCEPTIONS
+        {
+          switch (yyn)
+            {
+  case 2: // $@1: %empty
+#line 118 "netconf_parser.yy"
+                       { ctx.ctx_ = ctx.NO_KEYWORDS; }
+#line 695 "netconf_parser.cc"
+    break;
+
+  case 4: // $@2: %empty
+#line 119 "netconf_parser.yy"
+                         { ctx.ctx_ = ctx.CONFIG; }
+#line 701 "netconf_parser.cc"
+    break;
+
+  case 6: // $@3: %empty
+#line 120 "netconf_parser.yy"
+                         { ctx.ctx_ = ctx.NETCONF; }
+#line 707 "netconf_parser.cc"
+    break;
+
+  case 8: // $@4: %empty
+#line 128 "netconf_parser.yy"
+                            {
+    // Parse the Netconf map
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.push_back(m);
+}
+#line 717 "netconf_parser.cc"
+    break;
+
+  case 9: // sub_netconf: "{" $@4 global_params "}"
+#line 132 "netconf_parser.yy"
+                               {
+    // parsing completed
+}
+#line 725 "netconf_parser.cc"
+    break;
+
+  case 10: // json: value
+#line 139 "netconf_parser.yy"
+            {
+    // Push back the JSON value on the stack
+    ctx.stack_.push_back(yystack_[0].value.as < ElementPtr > ());
+}
+#line 734 "netconf_parser.cc"
+    break;
+
+  case 11: // value: "integer"
+#line 145 "netconf_parser.yy"
+               { yylhs.value.as < ElementPtr > () = ElementPtr(new IntElement(yystack_[0].value.as < int64_t > (), ctx.loc2pos(yystack_[0].location))); }
+#line 740 "netconf_parser.cc"
+    break;
+
+  case 12: // value: "floating point"
+#line 146 "netconf_parser.yy"
+             { yylhs.value.as < ElementPtr > () = ElementPtr(new DoubleElement(yystack_[0].value.as < double > (), ctx.loc2pos(yystack_[0].location))); }
+#line 746 "netconf_parser.cc"
+    break;
+
+  case 13: // value: "boolean"
+#line 147 "netconf_parser.yy"
+               { yylhs.value.as < ElementPtr > () = ElementPtr(new BoolElement(yystack_[0].value.as < bool > (), ctx.loc2pos(yystack_[0].location))); }
+#line 752 "netconf_parser.cc"
+    break;
+
+  case 14: // value: "constant string"
+#line 148 "netconf_parser.yy"
+              { yylhs.value.as < ElementPtr > () = ElementPtr(new StringElement(yystack_[0].value.as < std::string > (), ctx.loc2pos(yystack_[0].location))); }
+#line 758 "netconf_parser.cc"
+    break;
+
+  case 15: // value: "null"
+#line 149 "netconf_parser.yy"
+                 { yylhs.value.as < ElementPtr > () = ElementPtr(new NullElement(ctx.loc2pos(yystack_[0].location))); }
+#line 764 "netconf_parser.cc"
+    break;
+
+  case 16: // value: map
+#line 150 "netconf_parser.yy"
+           { yylhs.value.as < ElementPtr > () = ctx.stack_.back(); ctx.stack_.pop_back(); }
+#line 770 "netconf_parser.cc"
+    break;
+
+  case 17: // value: list_generic
+#line 151 "netconf_parser.yy"
+                    { yylhs.value.as < ElementPtr > () = ctx.stack_.back(); ctx.stack_.pop_back(); }
+#line 776 "netconf_parser.cc"
+    break;
+
+  case 18: // $@5: %empty
+#line 155 "netconf_parser.yy"
+                    {
+    // This code is executed when we're about to start parsing
+    // the content of the map
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.push_back(m);
+}
+#line 787 "netconf_parser.cc"
+    break;
+
+  case 19: // map: "{" $@5 map_content "}"
+#line 160 "netconf_parser.yy"
+                             {
+    // map parsing completed. If we ever want to do any wrap up
+    // (maybe some sanity checking), this would be the best place
+    // for it.
+}
+#line 797 "netconf_parser.cc"
+    break;
+
+  case 20: // map_value: map
+#line 166 "netconf_parser.yy"
+               { yylhs.value.as < ElementPtr > () = ctx.stack_.back(); ctx.stack_.pop_back(); }
+#line 803 "netconf_parser.cc"
+    break;
+
+  case 23: // not_empty_map: "constant string" ":" value
+#line 180 "netconf_parser.yy"
+                                  {
+                  // map containing a single entry
+                  ctx.unique(yystack_[2].value.as < std::string > (), ctx.loc2pos(yystack_[2].location));
+                  ctx.stack_.back()->set(yystack_[2].value.as < std::string > (), yystack_[0].value.as < ElementPtr > ());
+                  }
+#line 813 "netconf_parser.cc"
+    break;
+
+  case 24: // not_empty_map: not_empty_map "," "constant string" ":" value
+#line 185 "netconf_parser.yy"
+                                                      {
+                  // map consisting of a shorter map followed by
+                  // comma and string:value
+                  ctx.unique(yystack_[2].value.as < std::string > (), ctx.loc2pos(yystack_[2].location));
+                  ctx.stack_.back()->set(yystack_[2].value.as < std::string > (), yystack_[0].value.as < ElementPtr > ());
+                  }
+#line 824 "netconf_parser.cc"
+    break;
+
+  case 25: // not_empty_map: not_empty_map ","
+#line 191 "netconf_parser.yy"
+                                   {
+                 ctx.warnAboutExtraCommas(yystack_[0].location);
+                 }
+#line 832 "netconf_parser.cc"
+    break;
+
+  case 26: // $@6: %empty
+#line 196 "netconf_parser.yy"
+                              {
+    ElementPtr l(new ListElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.push_back(l);
+}
+#line 841 "netconf_parser.cc"
+    break;
+
+  case 27: // list_generic: "[" $@6 list_content "]"
+#line 199 "netconf_parser.yy"
+                               {
+}
+#line 848 "netconf_parser.cc"
+    break;
+
+  case 30: // not_empty_list: value
+#line 206 "netconf_parser.yy"
+                      {
+                  // List consisting of a single element.
+                  ctx.stack_.back()->add(yystack_[0].value.as < ElementPtr > ());
+                  }
+#line 857 "netconf_parser.cc"
+    break;
+
+  case 31: // not_empty_list: not_empty_list "," value
+#line 210 "netconf_parser.yy"
+                                           {
+                  // List ending with , and a value.
+                  ctx.stack_.back()->add(yystack_[0].value.as < ElementPtr > ());
+                  }
+#line 866 "netconf_parser.cc"
+    break;
+
+  case 32: // not_empty_list: not_empty_list ","
+#line 214 "netconf_parser.yy"
+                                     {
+                  ctx.warnAboutExtraCommas(yystack_[0].location);
+                  }
+#line 874 "netconf_parser.cc"
+    break;
+
+  case 33: // unknown_map_entry: "constant string" ":"
+#line 226 "netconf_parser.yy"
+                                {
+    const std::string& where = ctx.contextName();
+    const std::string& keyword = yystack_[1].value.as < std::string > ();
+    error(yystack_[1].location,
+          "got unexpected keyword \"" + keyword + "\" in " + where + " map.");
+}
+#line 885 "netconf_parser.cc"
+    break;
+
+  case 34: // $@7: %empty
+#line 234 "netconf_parser.yy"
+                                   {
+    // This code is executed when we're about to start parsing
+    // the content of the map
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.push_back(m);
+}
+#line 896 "netconf_parser.cc"
+    break;
+
+  case 35: // netconf_syntax_map: "{" $@7 global_object "}"
+#line 239 "netconf_parser.yy"
+                               {
+    // map parsing completed. If we ever want to do any wrap up
+    // (maybe some sanity checking), this would be the best place
+    // for it.
+}
+#line 906 "netconf_parser.cc"
+    break;
+
+  case 36: // $@8: %empty
+#line 246 "netconf_parser.yy"
+                       {
+    // Let's create a MapElement that will represent it, add it to the
+    // top level map (that's already on the stack) and put the new map
+    // on the stack as well, so child elements will be able to add
+    // themselves to it.
+
+    // Prevent against duplicate.
+    ctx.unique("Netconf", ctx.loc2pos(yystack_[0].location));
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("Netconf", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.NETCONF);
+}
+#line 924 "netconf_parser.cc"
+    break;
+
+  case 37: // global_object: "Netconf" $@8 ":" "{" global_params "}"
+#line 258 "netconf_parser.yy"
+                                                    {
+    // Ok, we're done with parsing Netconf. Let's take the map
+    // off the stack.
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+#line 935 "netconf_parser.cc"
+    break;
+
+  case 39: // global_object_comma: global_object ","
+#line 267 "netconf_parser.yy"
+                                         {
+    ctx.warnAboutExtraCommas(yystack_[0].location);
+}
+#line 943 "netconf_parser.cc"
+    break;
+
+  case 44: // not_empty_global_params: not_empty_global_params ","
+#line 278 "netconf_parser.yy"
+                                                       {
+                           ctx.warnAboutExtraCommas(yystack_[0].location);
+                           }
+#line 951 "netconf_parser.cc"
+    break;
+
+  case 54: // boot_update: "boot-update" ":" "boolean"
+#line 296 "netconf_parser.yy"
+                                       {
+    ctx.unique("boot-update", ctx.loc2pos(yystack_[2].location));
+    ElementPtr flag(new BoolElement(yystack_[0].value.as < bool > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("boot-update", flag);
+}
+#line 961 "netconf_parser.cc"
+    break;
+
+  case 55: // subscribe_changes: "subscribe-changes" ":" "boolean"
+#line 302 "netconf_parser.yy"
+                                                   {
+    ctx.unique("subscribe-changes", ctx.loc2pos(yystack_[2].location));
+    ElementPtr flag(new BoolElement(yystack_[0].value.as < bool > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("subscribe-changes", flag);
+}
+#line 971 "netconf_parser.cc"
+    break;
+
+  case 56: // validate_changes: "validate-changes" ":" "boolean"
+#line 308 "netconf_parser.yy"
+                                                 {
+    ctx.unique("validate-changes", ctx.loc2pos(yystack_[2].location));
+    ElementPtr flag(new BoolElement(yystack_[0].value.as < bool > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("validate-changes", flag);
+}
+#line 981 "netconf_parser.cc"
+    break;
+
+  case 57: // $@9: %empty
+#line 314 "netconf_parser.yy"
+                           {
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 989 "netconf_parser.cc"
+    break;
+
+  case 58: // user_context: "user-context" $@9 ":" map_value
+#line 316 "netconf_parser.yy"
+                  {
+    ElementPtr parent = ctx.stack_.back();
+    ElementPtr user_context = yystack_[0].value.as < ElementPtr > ();
+    ConstElementPtr old = parent->get("user-context");
+
+    // Handle already existing user context
+    if (old) {
+        // Check if it was a comment or a duplicate
+        if ((old->size() != 1) || !old->contains("comment")) {
+            std::stringstream msg;
+            msg << "duplicate user-context entries (previous at "
+                << old->getPosition().str() << ")";
+            error(yystack_[3].location, msg.str());
+        }
+        // Merge the comment
+        user_context->set("comment", old->get("comment"));
+    }
+
+    // Set the user context
+    parent->set("user-context", user_context);
+    ctx.leave();
+}
+#line 1016 "netconf_parser.cc"
+    break;
+
+  case 59: // $@10: %empty
+#line 339 "netconf_parser.yy"
+                 {
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 1024 "netconf_parser.cc"
+    break;
+
+  case 60: // comment: "comment" $@10 ":" "constant string"
+#line 341 "netconf_parser.yy"
+               {
+    ElementPtr parent = ctx.stack_.back();
+    ElementPtr user_context(new MapElement(ctx.loc2pos(yystack_[3].location)));
+    ElementPtr comment(new StringElement(yystack_[0].value.as < std::string > (), ctx.loc2pos(yystack_[0].location)));
+    user_context->set("comment", comment);
+
+    // Handle already existing user context
+    ConstElementPtr old = parent->get("user-context");
+    if (old) {
+        // Check for duplicate comment
+        if (old->contains("comment")) {
+            std::stringstream msg;
+            msg << "duplicate user-context/comment entries (previous at "
+                << old->getPosition().str() << ")";
+            error(yystack_[3].location, msg.str());
+        }
+        // Merge the user context in the comment
+        merge(user_context, old);
+    }
+
+    // Set the user context
+    parent->set("user-context", user_context);
+    ctx.leave();
+}
+#line 1053 "netconf_parser.cc"
+    break;
+
+  case 61: // $@11: %empty
+#line 367 "netconf_parser.yy"
+                                 {
+    ctx.unique("hooks-libraries", ctx.loc2pos(yystack_[0].location));
+    ElementPtr l(new ListElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("hooks-libraries", l);
+    ctx.stack_.push_back(l);
+    ctx.enter(ctx.HOOKS_LIBRARIES);
+}
+#line 1065 "netconf_parser.cc"
+    break;
+
+  case 62: // hooks_libraries: "hooks-libraries" $@11 ":" "[" hooks_libraries_list "]"
+#line 373 "netconf_parser.yy"
+                                                             {
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+#line 1074 "netconf_parser.cc"
+    break;
+
+  case 67: // not_empty_hooks_libraries_list: not_empty_hooks_libraries_list ","
+#line 384 "netconf_parser.yy"
+                                           {
+        ctx.warnAboutExtraCommas(yystack_[0].location);
+        }
+#line 1082 "netconf_parser.cc"
+    break;
+
+  case 68: // $@12: %empty
+#line 389 "netconf_parser.yy"
+                              {
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->add(m);
+    ctx.stack_.push_back(m);
+}
+#line 1092 "netconf_parser.cc"
+    break;
+
+  case 69: // hooks_library: "{" $@12 hooks_params "}"
+#line 393 "netconf_parser.yy"
+                              {
+    ctx.stack_.pop_back();
+}
+#line 1100 "netconf_parser.cc"
+    break;
+
+  case 72: // hooks_params: hooks_params ","
+#line 399 "netconf_parser.yy"
+                                 {
+              ctx.warnAboutExtraCommas(yystack_[0].location);
+              }
+#line 1108 "netconf_parser.cc"
+    break;
+
+  case 76: // $@13: %empty
+#line 409 "netconf_parser.yy"
+                 {
+    ctx.unique("library", ctx.loc2pos(yystack_[0].location));
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 1117 "netconf_parser.cc"
+    break;
+
+  case 77: // library: "library" $@13 ":" "constant string"
+#line 412 "netconf_parser.yy"
+               {
+    ElementPtr lib(new StringElement(yystack_[0].value.as < std::string > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("library", lib);
+    ctx.leave();
+}
+#line 1127 "netconf_parser.cc"
+    break;
+
+  case 78: // $@14: %empty
+#line 418 "netconf_parser.yy"
+                       {
+    ctx.unique("parameters", ctx.loc2pos(yystack_[0].location));
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 1136 "netconf_parser.cc"
+    break;
+
+  case 79: // parameters: "parameters" $@14 ":" map_value
+#line 421 "netconf_parser.yy"
+                  {
+    ctx.stack_.back()->set("parameters", yystack_[0].value.as < ElementPtr > ());
+    ctx.leave();
+}
+#line 1145 "netconf_parser.cc"
+    break;
+
+  case 80: // $@15: %empty
+#line 429 "netconf_parser.yy"
+                                                      {
+    ctx.unique("managed-servers", ctx.loc2pos(yystack_[2].location));
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[2].location)));
+    ctx.stack_.back()->set("managed-servers", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.MANAGED_SERVERS);
+}
+#line 1157 "netconf_parser.cc"
+    break;
+
+  case 81: // managed_servers: "managed-servers" ":" "{" $@15 servers_entries "}"
+#line 435 "netconf_parser.yy"
+                                 {
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+#line 1166 "netconf_parser.cc"
+    break;
+
+  case 86: // not_empty_servers_entries: not_empty_servers_entries ","
+#line 446 "netconf_parser.yy"
+                                                           {
+                             ctx.warnAboutExtraCommas(yystack_[0].location);
+                             }
+#line 1174 "netconf_parser.cc"
+    break;
+
+  case 92: // $@16: %empty
+#line 462 "netconf_parser.yy"
+                           {
+    ctx.unique("dhcp4", ctx.loc2pos(yystack_[0].location));
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("dhcp4", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.SERVER);
+}
+#line 1186 "netconf_parser.cc"
+    break;
+
+  case 93: // dhcp4_server: "dhcp4" $@16 ":" "{" managed_server_params "}"
+#line 468 "netconf_parser.yy"
+                                                            {
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+#line 1195 "netconf_parser.cc"
+    break;
+
+  case 94: // $@17: %empty
+#line 474 "netconf_parser.yy"
+                           {
+    ctx.unique("dhcp6", ctx.loc2pos(yystack_[0].location));
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("dhcp6", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.SERVER);
+}
+#line 1207 "netconf_parser.cc"
+    break;
+
+  case 95: // dhcp6_server: "dhcp6" $@17 ":" "{" managed_server_params "}"
+#line 480 "netconf_parser.yy"
+                                                            {
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+#line 1216 "netconf_parser.cc"
+    break;
+
+  case 96: // $@18: %empty
+#line 486 "netconf_parser.yy"
+                     {
+    ctx.unique("d2", ctx.loc2pos(yystack_[0].location));
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("d2", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.SERVER);
+}
+#line 1228 "netconf_parser.cc"
+    break;
+
+  case 97: // d2_server: "d2" $@18 ":" "{" managed_server_params "}"
+#line 492 "netconf_parser.yy"
+                                                            {
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+#line 1237 "netconf_parser.cc"
+    break;
+
+  case 98: // $@19: %empty
+#line 498 "netconf_parser.yy"
+                     {
+    ctx.unique("ca", ctx.loc2pos(yystack_[0].location));
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("ca", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.SERVER);
+}
+#line 1249 "netconf_parser.cc"
+    break;
+
+  case 99: // ca_server: "ca" $@19 ":" "{" managed_server_params "}"
+#line 504 "netconf_parser.yy"
+                                                            {
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+#line 1258 "netconf_parser.cc"
+    break;
+
+  case 102: // managed_server_params: managed_server_params ","
+#line 512 "netconf_parser.yy"
+                                                   {
+                         ctx.warnAboutExtraCommas(yystack_[0].location);
+                         }
+#line 1266 "netconf_parser.cc"
+    break;
+
+  case 111: // $@20: %empty
+#line 529 "netconf_parser.yy"
+             {
+    ctx.unique("model", ctx.loc2pos(yystack_[0].location));
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 1275 "netconf_parser.cc"
+    break;
+
+  case 112: // model: "model" $@20 ":" "constant string"
+#line 532 "netconf_parser.yy"
+               {
+    ElementPtr model(new StringElement(yystack_[0].value.as < std::string > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("model", model);
+    ctx.leave();
+}
+#line 1285 "netconf_parser.cc"
+    break;
+
+  case 113: // $@21: %empty
+#line 539 "netconf_parser.yy"
+                               {
+    ctx.unique("control-socket", ctx.loc2pos(yystack_[0].location));
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("control-socket", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.CONTROL_SOCKET);
+}
+#line 1297 "netconf_parser.cc"
+    break;
+
+  case 114: // control_socket: "control-socket" $@21 ":" "{" control_socket_params "}"
+#line 545 "netconf_parser.yy"
+                                                            {
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+#line 1306 "netconf_parser.cc"
+    break;
+
+  case 117: // control_socket_params: control_socket_params ","
+#line 553 "netconf_parser.yy"
+                                                   {
+                         ctx.warnAboutExtraCommas(yystack_[0].location);
+                         }
+#line 1314 "netconf_parser.cc"
+    break;
+
+  case 124: // $@22: %empty
+#line 566 "netconf_parser.yy"
+                         {
+    ctx.unique("socket-type", ctx.loc2pos(yystack_[0].location));
+    ctx.enter(ctx.SOCKET_TYPE);
+}
+#line 1323 "netconf_parser.cc"
+    break;
+
+  case 125: // socket_type: "socket-type" $@22 ":" socket_type_value
+#line 569 "netconf_parser.yy"
+                          {
+    ctx.stack_.back()->set("socket-type", yystack_[0].value.as < ElementPtr > ());
+    ctx.leave();
+}
+#line 1332 "netconf_parser.cc"
+    break;
+
+  case 126: // socket_type_value: "unix"
+#line 575 "netconf_parser.yy"
+                         { yylhs.value.as < ElementPtr > () = ElementPtr(new StringElement("unix", ctx.loc2pos(yystack_[0].location))); }
+#line 1338 "netconf_parser.cc"
+    break;
+
+  case 127: // socket_type_value: "http"
+#line 576 "netconf_parser.yy"
+                         { yylhs.value.as < ElementPtr > () = ElementPtr(new StringElement("http", ctx.loc2pos(yystack_[0].location))); }
+#line 1344 "netconf_parser.cc"
+    break;
+
+  case 128: // socket_type_value: "stdout"
+#line 577 "netconf_parser.yy"
+                           { yylhs.value.as < ElementPtr > () = ElementPtr(new StringElement("stdout", ctx.loc2pos(yystack_[0].location))); }
+#line 1350 "netconf_parser.cc"
+    break;
+
+  case 129: // $@23: %empty
+#line 580 "netconf_parser.yy"
+                         {
+    ctx.unique("socket-name", ctx.loc2pos(yystack_[0].location));
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 1359 "netconf_parser.cc"
+    break;
+
+  case 130: // socket_name: "socket-name" $@23 ":" "constant string"
+#line 583 "netconf_parser.yy"
+               {
+    ElementPtr name(new StringElement(yystack_[0].value.as < std::string > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("socket-name", name);
+    ctx.leave();
+}
+#line 1369 "netconf_parser.cc"
+    break;
+
+  case 131: // $@24: %empty
+#line 590 "netconf_parser.yy"
+                       {
+    ctx.unique("socket-url", ctx.loc2pos(yystack_[0].location));
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 1378 "netconf_parser.cc"
+    break;
+
+  case 132: // socket_url: "socket-url" $@24 ":" "constant string"
+#line 593 "netconf_parser.yy"
+               {
+    ElementPtr url(new StringElement(yystack_[0].value.as < std::string > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("socket-url", url);
+    ctx.leave();
+}
+#line 1388 "netconf_parser.cc"
+    break;
+
+  case 133: // $@25: %empty
+#line 603 "netconf_parser.yy"
+                 {
+    ctx.unique("loggers", ctx.loc2pos(yystack_[0].location));
+    ElementPtr l(new ListElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("loggers", l);
+    ctx.stack_.push_back(l);
+    ctx.enter(ctx.LOGGERS);
+}
+#line 1400 "netconf_parser.cc"
+    break;
+
+  case 134: // loggers: "loggers" $@25 ":" "[" loggers_entries "]"
+#line 609 "netconf_parser.yy"
+                                                         {
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+#line 1409 "netconf_parser.cc"
+    break;
+
+  case 137: // loggers_entries: loggers_entries ","
+#line 618 "netconf_parser.yy"
+                                       {
+                   ctx.warnAboutExtraCommas(yystack_[0].location);
+                   }
+#line 1417 "netconf_parser.cc"
+    break;
+
+  case 138: // $@26: %empty
+#line 624 "netconf_parser.yy"
+                             {
+    ElementPtr l(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->add(l);
+    ctx.stack_.push_back(l);
+}
+#line 1427 "netconf_parser.cc"
+    break;
+
+  case 139: // logger_entry: "{" $@26 logger_params "}"
+#line 628 "netconf_parser.yy"
+                               {
+    ctx.stack_.pop_back();
+}
+#line 1435 "netconf_parser.cc"
+    break;
+
+  case 142: // logger_params: logger_params ","
+#line 634 "netconf_parser.yy"
+                                   {
+                 ctx.warnAboutExtraCommas(yystack_[0].location);
+                 }
+#line 1443 "netconf_parser.cc"
+    break;
+
+  case 150: // $@27: %empty
+#line 648 "netconf_parser.yy"
+           {
+    ctx.unique("name", ctx.loc2pos(yystack_[0].location));
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 1452 "netconf_parser.cc"
+    break;
+
+  case 151: // name: "name" $@27 ":" "constant string"
+#line 651 "netconf_parser.yy"
+               {
+    ElementPtr name(new StringElement(yystack_[0].value.as < std::string > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("name", name);
+    ctx.leave();
+}
+#line 1462 "netconf_parser.cc"
+    break;
+
+  case 152: // debuglevel: "debuglevel" ":" "integer"
+#line 657 "netconf_parser.yy"
+                                     {
+    ctx.unique("debuglevel", ctx.loc2pos(yystack_[2].location));
+    ElementPtr dl(new IntElement(yystack_[0].value.as < int64_t > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("debuglevel", dl);
+}
+#line 1472 "netconf_parser.cc"
+    break;
+
+  case 153: // $@28: %empty
+#line 663 "netconf_parser.yy"
+                   {
+    ctx.unique("severity", ctx.loc2pos(yystack_[0].location));
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 1481 "netconf_parser.cc"
+    break;
+
+  case 154: // severity: "severity" $@28 ":" "constant string"
+#line 666 "netconf_parser.yy"
+               {
+    ElementPtr sev(new StringElement(yystack_[0].value.as < std::string > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("severity", sev);
+    ctx.leave();
+}
+#line 1491 "netconf_parser.cc"
+    break;
+
+  case 155: // $@29: %empty
+#line 672 "netconf_parser.yy"
+                                    {
+    ctx.unique("output_options", ctx.loc2pos(yystack_[0].location));
+    ElementPtr l(new ListElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("output_options", l);
+    ctx.stack_.push_back(l);
+    ctx.enter(ctx.OUTPUT_OPTIONS);
+}
+#line 1503 "netconf_parser.cc"
+    break;
+
+  case 156: // output_options_list: "output_options" $@29 ":" "[" output_options_list_content "]"
+#line 678 "netconf_parser.yy"
+                                                                    {
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+#line 1512 "netconf_parser.cc"
+    break;
+
+  case 159: // output_options_list_content: output_options_list_content ","
+#line 685 "netconf_parser.yy"
+                                                               {
+                               ctx.warnAboutExtraCommas(yystack_[0].location);
+                               }
+#line 1520 "netconf_parser.cc"
+    break;
+
+  case 160: // $@30: %empty
+#line 690 "netconf_parser.yy"
+                             {
+    ElementPtr m(new MapElement(ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->add(m);
+    ctx.stack_.push_back(m);
+}
+#line 1530 "netconf_parser.cc"
+    break;
+
+  case 161: // output_entry: "{" $@30 output_params_list "}"
+#line 694 "netconf_parser.yy"
+                                    {
+    ctx.stack_.pop_back();
+}
+#line 1538 "netconf_parser.cc"
+    break;
+
+  case 164: // output_params_list: output_params_list ","
+#line 700 "netconf_parser.yy"
+                                        {
+                 ctx.warnAboutExtraCommas(yystack_[0].location);
+                 }
+#line 1546 "netconf_parser.cc"
+    break;
+
+  case 170: // $@31: %empty
+#line 712 "netconf_parser.yy"
+               {
+    ctx.unique("output", ctx.loc2pos(yystack_[0].location));
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 1555 "netconf_parser.cc"
+    break;
+
+  case 171: // output: "output" $@31 ":" "constant string"
+#line 715 "netconf_parser.yy"
+               {
+    ElementPtr sev(new StringElement(yystack_[0].value.as < std::string > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("output", sev);
+    ctx.leave();
+}
+#line 1565 "netconf_parser.cc"
+    break;
+
+  case 172: // flush: "flush" ":" "boolean"
+#line 721 "netconf_parser.yy"
+                           {
+    ctx.unique("flush", ctx.loc2pos(yystack_[2].location));
+    ElementPtr flush(new BoolElement(yystack_[0].value.as < bool > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("flush", flush);
+}
+#line 1575 "netconf_parser.cc"
+    break;
+
+  case 173: // maxsize: "maxsize" ":" "integer"
+#line 727 "netconf_parser.yy"
+                               {
+    ctx.unique("maxsize", ctx.loc2pos(yystack_[2].location));
+    ElementPtr maxsize(new IntElement(yystack_[0].value.as < int64_t > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("maxsize", maxsize);
+}
+#line 1585 "netconf_parser.cc"
+    break;
+
+  case 174: // maxver: "maxver" ":" "integer"
+#line 733 "netconf_parser.yy"
+                             {
+    ctx.unique("maxver", ctx.loc2pos(yystack_[2].location));
+    ElementPtr maxver(new IntElement(yystack_[0].value.as < int64_t > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("maxver", maxver);
+}
+#line 1595 "netconf_parser.cc"
+    break;
+
+  case 175: // $@32: %empty
+#line 739 "netconf_parser.yy"
+                 {
+    ctx.unique("pattern", ctx.loc2pos(yystack_[0].location));
+    ctx.enter(ctx.NO_KEYWORDS);
+}
+#line 1604 "netconf_parser.cc"
+    break;
+
+  case 176: // pattern: "pattern" $@32 ":" "constant string"
+#line 742 "netconf_parser.yy"
+               {
+    ElementPtr sev(new StringElement(yystack_[0].value.as < std::string > (), ctx.loc2pos(yystack_[0].location)));
+    ctx.stack_.back()->set("pattern", sev);
+    ctx.leave();
+}
+#line 1614 "netconf_parser.cc"
+    break;
+
+
+#line 1618 "netconf_parser.cc"
+
+            default:
+              break;
+            }
+        }
+#if YY_EXCEPTIONS
+      catch (const syntax_error& yyexc)
+        {
+          YYCDEBUG << "Caught exception: " << yyexc.what() << '\n';
+          error (yyexc);
+          YYERROR;
+        }
+#endif // YY_EXCEPTIONS
+      YY_SYMBOL_PRINT ("-> $$ =", yylhs);
+      yypop_ (yylen);
+      yylen = 0;
+
+      // Shift the result of the reduction.
+      yypush_ (YY_NULLPTR, YY_MOVE (yylhs));
+    }
+    goto yynewstate;
+
+
+  /*--------------------------------------.
+  | yyerrlab -- here on detecting error.  |
+  `--------------------------------------*/
+  yyerrlab:
+    // If not already recovering from an error, report this error.
+    if (!yyerrstatus_)
+      {
+        ++yynerrs_;
+        context yyctx (*this, yyla);
+        std::string msg = yysyntax_error_ (yyctx);
+        error (yyla.location, YY_MOVE (msg));
+      }
+
+
+    yyerror_range[1].location = yyla.location;
+    if (yyerrstatus_ == 3)
+      {
+        /* If just tried and failed to reuse lookahead token after an
+           error, discard it.  */
+
+        // Return failure if at end of input.
+        if (yyla.kind () == symbol_kind::S_YYEOF)
+          YYABORT;
+        else if (!yyla.empty ())
+          {
+            yy_destroy_ ("Error: discarding", yyla);
+            yyla.clear ();
+          }
+      }
+
+    // Else will try to reuse lookahead token after shifting the error token.
+    goto yyerrlab1;
+
+
+  /*---------------------------------------------------.
+  | yyerrorlab -- error raised explicitly by YYERROR.  |
+  `---------------------------------------------------*/
+  yyerrorlab:
+    /* Pacify compilers when the user code never invokes YYERROR and
+       the label yyerrorlab therefore never appears in user code.  */
+    if (false)
+      YYERROR;
+
+    /* Do not reclaim the symbols of the rule whose action triggered
+       this YYERROR.  */
+    yypop_ (yylen);
+    yylen = 0;
+    YY_STACK_PRINT ();
+    goto yyerrlab1;
+
+
+  /*-------------------------------------------------------------.
+  | yyerrlab1 -- common code for both syntax error and YYERROR.  |
+  `-------------------------------------------------------------*/
+  yyerrlab1:
+    yyerrstatus_ = 3;   // Each real token shifted decrements this.
+    // Pop stack until we find a state that shifts the error token.
+    for (;;)
+      {
+        yyn = yypact_[+yystack_[0].state];
+        if (!yy_pact_value_is_default_ (yyn))
+          {
+            yyn += symbol_kind::S_YYerror;
+            if (0 <= yyn && yyn <= yylast_
+                && yycheck_[yyn] == symbol_kind::S_YYerror)
+              {
+                yyn = yytable_[yyn];
+                if (0 < yyn)
+                  break;
+              }
+          }
+
+        // Pop the current state because it cannot handle the error token.
+        if (yystack_.size () == 1)
+          YYABORT;
+
+        yyerror_range[1].location = yystack_[0].location;
+        yy_destroy_ ("Error: popping", yystack_[0]);
+        yypop_ ();
+        YY_STACK_PRINT ();
+      }
+    {
+      stack_symbol_type error_token;
+
+      yyerror_range[2].location = yyla.location;
+      YYLLOC_DEFAULT (error_token.location, yyerror_range, 2);
+
+      // Shift the error token.
+      error_token.state = state_type (yyn);
+      yypush_ ("Shifting", YY_MOVE (error_token));
+    }
+    goto yynewstate;
+
+
+  /*-------------------------------------.
+  | yyacceptlab -- YYACCEPT comes here.  |
+  `-------------------------------------*/
+  yyacceptlab:
+    yyresult = 0;
+    goto yyreturn;
+
+
+  /*-----------------------------------.
+  | yyabortlab -- YYABORT comes here.  |
+  `-----------------------------------*/
+  yyabortlab:
+    yyresult = 1;
+    goto yyreturn;
+
+
+  /*-----------------------------------------------------.
+  | yyreturn -- parsing is finished, return the result.  |
+  `-----------------------------------------------------*/
+  yyreturn:
+    if (!yyla.empty ())
+      yy_destroy_ ("Cleanup: discarding lookahead", yyla);
+
+    /* Do not reclaim the symbols of the rule whose action triggered
+       this YYABORT or YYACCEPT.  */
+    yypop_ (yylen);
+    YY_STACK_PRINT ();
+    while (1 < yystack_.size ())
+      {
+        yy_destroy_ ("Cleanup: popping", yystack_[0]);
+        yypop_ ();
+      }
+
+    return yyresult;
+  }
+#if YY_EXCEPTIONS
+    catch (...)
+      {
+        YYCDEBUG << "Exception caught: cleaning lookahead and stack\n";
+        // Do not try to display the values of the reclaimed symbols,
+        // as their printers might throw an exception.
+        if (!yyla.empty ())
+          yy_destroy_ (YY_NULLPTR, yyla);
+
+        while (1 < yystack_.size ())
+          {
+            yy_destroy_ (YY_NULLPTR, yystack_[0]);
+            yypop_ ();
+          }
+        throw;
+      }
+#endif // YY_EXCEPTIONS
+  }
+
+  void
+  NetconfParser::error (const syntax_error& yyexc)
+  {
+    error (yyexc.location, yyexc.what ());
+  }
+
+  /* Return YYSTR after stripping away unnecessary quotes and
+     backslashes, so that it's suitable for yyerror.  The heuristic is
+     that double-quoting is unnecessary unless the string contains an
+     apostrophe, a comma, or backslash (other than backslash-backslash).
+     YYSTR is taken from yytname.  */
+  std::string
+  NetconfParser::yytnamerr_ (const char *yystr)
+  {
+    if (*yystr == '"')
+      {
+        std::string yyr;
+        char const *yyp = yystr;
+
+        for (;;)
+          switch (*++yyp)
+            {
+            case '\'':
+            case ',':
+              goto do_not_strip_quotes;
+
+            case '\\':
+              if (*++yyp != '\\')
+                goto do_not_strip_quotes;
+              else
+                goto append;
+
+            append:
+            default:
+              yyr += *yyp;
+              break;
+
+            case '"':
+              return yyr;
+            }
+      do_not_strip_quotes: ;
+      }
+
+    return yystr;
+  }
+
+  std::string
+  NetconfParser::symbol_name (symbol_kind_type yysymbol)
+  {
+    return yytnamerr_ (yytname_[yysymbol]);
+  }
+
+
+
+  // NetconfParser::context.
+  NetconfParser::context::context (const NetconfParser& yyparser, const symbol_type& yyla)
+    : yyparser_ (yyparser)
+    , yyla_ (yyla)
+  {}
+
+  int
+  NetconfParser::context::expected_tokens (symbol_kind_type yyarg[], int yyargn) const
+  {
+    // Actual number of expected tokens
+    int yycount = 0;
+
+    const int yyn = yypact_[+yyparser_.yystack_[0].state];
+    if (!yy_pact_value_is_default_ (yyn))
+      {
+        /* Start YYX at -YYN if negative to avoid negative indexes in
+           YYCHECK.  In other words, skip the first -YYN actions for
+           this state because they are default actions.  */
+        const int yyxbegin = yyn < 0 ? -yyn : 0;
+        // Stay within bounds of both yycheck and yytname.
+        const int yychecklim = yylast_ - yyn + 1;
+        const int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
+        for (int yyx = yyxbegin; yyx < yyxend; ++yyx)
+          if (yycheck_[yyx + yyn] == yyx && yyx != symbol_kind::S_YYerror
+              && !yy_table_value_is_error_ (yytable_[yyx + yyn]))
+            {
+              if (!yyarg)
+                ++yycount;
+              else if (yycount == yyargn)
+                return 0;
+              else
+                yyarg[yycount++] = YY_CAST (symbol_kind_type, yyx);
+            }
+      }
+
+    if (yyarg && yycount == 0 && 0 < yyargn)
+      yyarg[0] = symbol_kind::S_YYEMPTY;
+    return yycount;
+  }
+
+
+
+
+
+
+  int
+  NetconfParser::yy_syntax_error_arguments_ (const context& yyctx,
+                                                 symbol_kind_type yyarg[], int yyargn) const
+  {
+    /* There are many possibilities here to consider:
+       - If this state is a consistent state with a default action, then
+         the only way this function was invoked is if the default action
+         is an error action.  In that case, don't check for expected
+         tokens because there are none.
+       - The only way there can be no lookahead present (in yyla) is
+         if this state is a consistent state with a default action.
+         Thus, detecting the absence of a lookahead is sufficient to
+         determine that there is no unexpected or expected token to
+         report.  In that case, just report a simple "syntax error".
+       - Don't assume there isn't a lookahead just because this state is
+         a consistent state with a default action.  There might have
+         been a previous inconsistent state, consistent state with a
+         non-default action, or user semantic action that manipulated
+         yyla.  (However, yyla is currently not documented for users.)
+       - Of course, the expected token list depends on states to have
+         correct lookahead information, and it depends on the parser not
+         to perform extra reductions after fetching a lookahead from the
+         scanner and before detecting a syntax error.  Thus, state merging
+         (from LALR or IELR) and default reductions corrupt the expected
+         token list.  However, the list is correct for canonical LR with
+         one exception: it will still contain any token that will not be
+         accepted due to an error action in a later state.
+    */
+
+    if (!yyctx.lookahead ().empty ())
+      {
+        if (yyarg)
+          yyarg[0] = yyctx.token ();
+        int yyn = yyctx.expected_tokens (yyarg ? yyarg + 1 : yyarg, yyargn - 1);
+        return yyn + 1;
+      }
+    return 0;
+  }
+
+  // Generate an error message.
+  std::string
+  NetconfParser::yysyntax_error_ (const context& yyctx) const
+  {
+    // Its maximum.
+    enum { YYARGS_MAX = 5 };
+    // Arguments of yyformat.
+    symbol_kind_type yyarg[YYARGS_MAX];
+    int yycount = yy_syntax_error_arguments_ (yyctx, yyarg, YYARGS_MAX);
+
+    char const* yyformat = YY_NULLPTR;
+    switch (yycount)
+      {
+#define YYCASE_(N, S)                         \
+        case N:                               \
+          yyformat = S;                       \
+        break
+      default: // Avoid compiler warnings.
+        YYCASE_ (0, YY_("syntax error"));
+        YYCASE_ (1, YY_("syntax error, unexpected %s"));
+        YYCASE_ (2, YY_("syntax error, unexpected %s, expecting %s"));
+        YYCASE_ (3, YY_("syntax error, unexpected %s, expecting %s or %s"));
+        YYCASE_ (4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
+        YYCASE_ (5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
+#undef YYCASE_
+      }
+
+    std::string yyres;
+    // Argument number.
+    std::ptrdiff_t yyi = 0;
+    for (char const* yyp = yyformat; *yyp; ++yyp)
+      if (yyp[0] == '%' && yyp[1] == 's' && yyi < yycount)
+        {
+          yyres += symbol_name (yyarg[yyi++]);
+          ++yyp;
+        }
+      else
+        yyres += *yyp;
+    return yyres;
+  }
+
+
+  const signed char NetconfParser::yypact_ninf_ = -79;
+
+  const signed char NetconfParser::yytable_ninf_ = -1;
+
+  const short
+  NetconfParser::yypact_[] =
+  {
+      -8,   -79,   -79,   -79,    16,    14,    13,    15,   -79,   -79,
+     -79,   -79,   -79,   -79,   -79,   -79,   -79,   -79,   -79,   -79,
+     -79,   -79,   -79,   -79,    14,     2,    45,    -1,   -79,    61,
+      68,    75,    73,    79,   -79,    30,   -79,   -79,   -79,    89,
+      90,   123,   124,   -79,   -79,   125,   -79,   108,    94,   -79,
+     -79,   -79,   -79,   -79,   -79,   -79,   -79,   -79,   -79,    14,
+      14,   -79,    85,   127,   -79,   -79,   128,   129,    86,    87,
+      88,   130,   134,   135,   -79,   -79,    -1,   -79,   -79,   136,
+     140,   141,    96,   -79,   -79,   -79,   -79,   137,   138,   -79,
+      14,    -1,   -79,   -79,   -79,     7,   142,   143,   -79,   144,
+     -79,   -79,   -79,   -79,   -79,   145,   148,   -79,   -79,   -79,
+     -79,   -79,   -79,   149,   151,   -79,   -79,    50,   -79,   -79,
+     152,   153,   154,   155,   -79,     7,   -13,   -79,   142,    76,
+     143,   -79,   156,   157,   158,   159,   -79,   -79,   -79,   -79,
+      34,   -79,   -79,   -79,   -79,   -79,   -79,   163,   -79,   -79,
+     -79,   -79,    40,   -79,   -79,   -79,   -79,   -79,   -79,    63,
+      63,    63,    63,   164,   165,   -24,   -79,   166,   167,   116,
+     168,    76,   -79,   -79,   -79,   -79,   -79,   -79,   -79,   -79,
+     -79,    92,   -79,   -79,   -79,    93,   111,   112,   131,   141,
+     -79,   132,   169,   -79,   133,   -79,   171,   175,    63,   -79,
+     -79,   -79,   -79,   -79,   -79,   -79,   173,   -79,   139,   174,
+     -79,   -79,    77,   -79,   -79,    18,    51,   173,   -79,   -79,
+     -79,   -79,   -79,   -79,   -79,   114,   -79,   -79,   -79,   -79,
+     -79,   178,   179,   181,   -79,   115,   -79,   -79,   -79,   -79,
+     -79,   -79,   -79,   182,   183,   187,    18,   -79,   188,   113,
+     147,   150,   190,    51,   -79,    81,   160,   161,   -79,   162,
+     -79,   -79,   -79,   170,   -79,   -79,   -79,   -79,   -79,   -79,
+     -79,   -79,   -79
+  };
+
+  const unsigned char
+  NetconfParser::yydefact_[] =
+  {
+       0,     2,     4,     6,     0,     0,     0,     0,     1,    26,
+      18,    15,    14,    11,    12,    13,     3,    10,    16,    17,
+      34,     5,     8,     7,    28,    21,     0,    40,    30,     0,
+      29,     0,     0,    22,    36,     0,    38,    57,    59,     0,
+       0,     0,     0,    61,   133,     0,    53,     0,    41,    42,
+      45,    46,    47,    51,    52,    49,    48,    50,    27,    32,
+       0,    19,    25,     0,    39,    35,     0,     0,     0,     0,
+       0,     0,     0,     0,    33,     9,    44,    31,    23,     0,
+       0,     0,     0,    54,    55,    56,    80,     0,     0,    43,
+       0,    40,    20,    58,    60,    82,    63,     0,    24,     0,
+      92,    94,    96,    98,    91,     0,    83,    84,    87,    88,
+      89,    90,    68,     0,    64,    65,   138,     0,   135,    37,
+       0,     0,     0,     0,    81,    86,     0,    62,    67,     0,
+     137,   134,     0,     0,     0,     0,    85,    76,    78,    73,
+       0,    70,    74,    75,    66,   150,   155,     0,   153,   149,
+     147,   148,     0,   140,   143,   145,   146,   144,   136,     0,
+       0,     0,     0,     0,     0,    72,    69,     0,     0,     0,
+       0,   142,   139,   111,   113,   110,   104,   105,   106,   108,
+     109,     0,   100,   103,   107,     0,     0,     0,     0,     0,
+      71,     0,     0,   152,     0,   141,     0,     0,   102,    93,
+      95,    97,    99,    77,    79,   151,     0,   154,     0,     0,
+     101,   160,     0,   157,   112,     0,     0,   159,   156,   124,
+     129,   131,   123,   121,   122,     0,   115,   118,   119,   120,
+     170,     0,     0,     0,   175,     0,   162,   165,   166,   167,
+     168,   169,   158,     0,     0,     0,   117,   114,     0,     0,
+       0,     0,     0,   164,   161,     0,     0,     0,   116,     0,
+     172,   173,   174,     0,   163,   126,   127,   128,   125,   130,
+     132,   171,   176
+  };
+
+  const signed char
+  NetconfParser::yypgoto_[] =
+  {
+     -79,   -79,   -79,   -79,   -79,   -79,   -79,   -79,   -20,   -78,
+     -79,   -29,   -79,   -79,   -79,   -79,   -79,   -79,   -27,   -79,
+     -79,   -79,   -79,   -79,    82,   -79,   119,   -22,   -19,   -18,
+     -26,   -79,   -25,   -79,   -79,   -79,   -79,   -79,    69,   -79,
+     -79,    33,   -79,   -79,   -79,   -79,   -79,   -79,   -79,   -79,
+      74,   -79,   -79,   -79,   -79,   -79,   -79,   -79,   -79,   -36,
+       3,   -79,   -79,   -79,   -79,   -79,   -46,   -79,   -79,   -79,
+     -79,   -79,   -79,   -79,   -79,   -79,   -79,    72,   -79,   -79,
+      32,   -79,   -79,   -79,   -79,   -79,   -79,   -79,   -79,    -9,
+     -79,   -79,   -49,   -79,   -79,   -79,   -79,   -79,   -79,   -79
+  };
+
+  const short
+  NetconfParser::yydefgoto_[] =
+  {
+       0,     4,     5,     6,     7,    23,    27,    16,    17,    18,
+      25,    93,    32,    33,    19,    24,    29,    30,   175,    21,
+      26,    35,    63,    36,    47,    48,    49,   176,   177,   178,
+     179,    66,   180,    67,    55,    72,   113,   114,   115,   126,
+     140,   141,   142,   163,   143,   164,    56,    95,   105,   106,
+     107,   108,   120,   109,   121,   110,   122,   111,   123,   181,
+     182,   183,   196,   184,   197,   225,   226,   227,   243,   268,
+     228,   244,   229,   245,    57,    73,   117,   118,   129,   152,
+     153,   154,   167,   155,   156,   170,   157,   168,   212,   213,
+     216,   235,   236,   237,   248,   238,   239,   240,   241,   252
+  };
+
+  const short
+  NetconfParser::yytable_[] =
+  {
+      46,    53,    54,    92,    28,    50,   137,   138,    51,    52,
+      37,    38,    39,    40,    41,    42,     8,   137,   138,     9,
+      20,    10,    22,    11,   100,   101,   102,   103,    43,    37,
+      38,    44,    45,    64,     1,     2,     3,   165,    65,    77,
+      78,   219,   166,   171,    45,   220,   221,    31,   172,    46,
+      53,    54,    45,   130,    50,    34,   131,    51,    52,    12,
+      13,    14,    15,    45,    46,    53,    54,    58,   104,    50,
+      98,    59,    51,    52,    37,    38,    39,    40,    41,    60,
+     217,    61,    62,   218,   173,   174,   230,    37,    38,   231,
+     232,   233,   234,    68,    69,   198,   198,    76,   104,   139,
+     199,   200,   149,   150,   151,   265,   266,   267,    45,   145,
+     146,    92,   147,   148,   198,   198,    75,   246,   253,   201,
+     202,    45,   247,   254,   185,   186,   187,    70,    71,    74,
+      79,    80,    81,    82,    83,    84,    85,    86,    87,    88,
+      90,    94,    96,    97,   149,   150,   151,    91,    10,   112,
+     116,   125,   119,   124,   128,   127,   132,   133,   134,   135,
+     204,   260,   193,   159,   160,   161,   162,   169,   188,   189,
+     191,   192,   194,    99,   206,   208,   203,   205,   207,   209,
+     211,   215,   249,   250,   214,   251,   255,   256,   222,   223,
+     224,   257,   259,   261,   263,    89,   262,   144,   190,   136,
+     258,   210,   158,   195,   264,   269,   270,   271,   242,     0,
+       0,     0,     0,     0,     0,   272,     0,     0,     0,   222,
+     223,   224
+  };
+
+  const short
+  NetconfParser::yycheck_[] =
+  {
+      27,    27,    27,    81,    24,    27,    30,    31,    27,    27,
+      11,    12,    13,    14,    15,    16,     0,    30,    31,     5,
+       7,     7,     7,     9,    17,    18,    19,    20,    29,    11,
+      12,    32,    45,     3,    42,    43,    44,     3,     8,    59,
+      60,    23,     8,     3,    45,    27,    28,    45,     8,    76,
+      76,    76,    45,     3,    76,    10,     6,    76,    76,    45,
+      46,    47,    48,    45,    91,    91,    91,     6,    95,    91,
+      90,     3,    91,    91,    11,    12,    13,    14,    15,     4,
+       3,     8,     3,     6,    21,    22,    35,    11,    12,    38,
+      39,    40,    41,     4,     4,     3,     3,     3,   125,   126,
+       8,     8,   129,   129,   129,    24,    25,    26,    45,    33,
+      34,   189,    36,    37,     3,     3,     8,     3,     3,     8,
+       8,    45,     8,     8,   160,   161,   162,     4,     4,     4,
+      45,     4,     4,     4,    48,    48,    48,     7,     4,     4,
+       4,    45,     5,     5,   171,   171,   171,     7,     7,     7,
+       7,     3,     8,     8,     3,     6,     4,     4,     4,     4,
+     189,    48,    46,     7,     7,     7,     7,     4,     4,     4,
+       4,     4,     4,    91,     5,     4,    45,    45,    45,     4,
+       7,     7,     4,     4,    45,     4,     4,     4,   215,   215,
+     215,     4,     4,    46,     4,    76,    46,   128,   165,   125,
+     246,   198,   130,   171,   253,    45,    45,    45,   217,    -1,
+      -1,    -1,    -1,    -1,    -1,    45,    -1,    -1,    -1,   246,
+     246,   246
+  };
+
+  const unsigned char
+  NetconfParser::yystos_[] =
+  {
+       0,    42,    43,    44,    50,    51,    52,    53,     0,     5,
+       7,     9,    45,    46,    47,    48,    56,    57,    58,    63,
+       7,    68,     7,    54,    64,    59,    69,    55,    57,    65,
+      66,    45,    61,    62,    10,    70,    72,    11,    12,    13,
+      14,    15,    16,    29,    32,    45,    67,    73,    74,    75,
+      76,    77,    78,    79,    81,    83,    95,   123,     6,     3,
+       4,     8,     3,    71,     3,     8,    80,    82,     4,     4,
+       4,     4,    84,   124,     4,     8,     3,    57,    57,    45,
+       4,     4,     4,    48,    48,    48,     7,     4,     4,    75,
+       4,     7,    58,    60,    45,    96,     5,     5,    57,    73,
+      17,    18,    19,    20,    67,    97,    98,    99,   100,   102,
+     104,   106,     7,    85,    86,    87,     7,   125,   126,     8,
+     101,   103,   105,   107,     8,     3,    88,     6,     3,   127,
+       3,     6,     4,     4,     4,     4,    99,    30,    31,    67,
+      89,    90,    91,    93,    87,    33,    34,    36,    37,    67,
+      79,    81,   128,   129,   130,   132,   133,   135,   126,     7,
+       7,     7,     7,    92,    94,     3,     8,   131,   136,     4,
+     134,     3,     8,    21,    22,    67,    76,    77,    78,    79,
+      81,   108,   109,   110,   112,   108,   108,   108,     4,     4,
+      90,     4,     4,    46,     4,   129,   111,   113,     3,     8,
+       8,     8,     8,    45,    60,    45,     5,    45,     4,     4,
+     109,     7,   137,   138,    45,     7,   139,     3,     6,    23,
+      27,    28,    67,    79,    81,   114,   115,   116,   119,   121,
+      35,    38,    39,    40,    41,   140,   141,   142,   144,   145,
+     146,   147,   138,   117,   120,   122,     3,     8,   143,     4,
+       4,     4,   148,     3,     8,     4,     4,     4,   115,     4,
+      48,    46,    46,     4,   141,    24,    25,    26,   118,    45,
+      45,    45,    45
+  };
+
+  const unsigned char
+  NetconfParser::yyr1_[] =
+  {
+       0,    49,    51,    50,    52,    50,    53,    50,    55,    54,
+      56,    57,    57,    57,    57,    57,    57,    57,    59,    58,
+      60,    61,    61,    62,    62,    62,    64,    63,    65,    65,
+      66,    66,    66,    67,    69,    68,    71,    70,    70,    72,
+      73,    73,    74,    74,    74,    75,    75,    75,    75,    75,
+      75,    75,    75,    75,    76,    77,    78,    80,    79,    82,
+      81,    84,    83,    85,    85,    86,    86,    86,    88,    87,
+      89,    89,    89,    89,    90,    90,    92,    91,    94,    93,
+      96,    95,    97,    97,    98,    98,    98,    99,    99,    99,
+      99,    99,   101,   100,   103,   102,   105,   104,   107,   106,
+     108,   108,   108,   109,   109,   109,   109,   109,   109,   109,
+     109,   111,   110,   113,   112,   114,   114,   114,   115,   115,
+     115,   115,   115,   115,   117,   116,   118,   118,   118,   120,
+     119,   122,   121,   124,   123,   125,   125,   125,   127,   126,
+     128,   128,   128,   129,   129,   129,   129,   129,   129,   129,
+     131,   130,   132,   134,   133,   136,   135,   137,   137,   137,
+     139,   138,   140,   140,   140,   141,   141,   141,   141,   141,
+     143,   142,   144,   145,   146,   148,   147
+  };
+
+  const signed char
+  NetconfParser::yyr2_[] =
+  {
+       0,     2,     0,     3,     0,     3,     0,     3,     0,     4,
+       1,     1,     1,     1,     1,     1,     1,     1,     0,     4,
+       1,     0,     1,     3,     5,     2,     0,     4,     0,     1,
+       1,     3,     2,     2,     0,     4,     0,     6,     1,     2,
+       0,     1,     1,     3,     2,     1,     1,     1,     1,     1,
+       1,     1,     1,     1,     3,     3,     3,     0,     4,     0,
+       4,     0,     6,     0,     1,     1,     3,     2,     0,     4,
+       1,     3,     2,     1,     1,     1,     0,     4,     0,     4,
+       0,     6,     0,     1,     1,     3,     2,     1,     1,     1,
+       1,     1,     0,     6,     0,     6,     0,     6,     0,     6,
+       1,     3,     2,     1,     1,     1,     1,     1,     1,     1,
+       1,     0,     4,     0,     6,     1,     3,     2,     1,     1,
+       1,     1,     1,     1,     0,     4,     1,     1,     1,     0,
+       4,     0,     4,     0,     6,     1,     3,     2,     0,     4,
+       1,     3,     2,     1,     1,     1,     1,     1,     1,     1,
+       0,     4,     3,     0,     4,     0,     6,     1,     3,     2,
+       0,     4,     1,     3,     2,     1,     1,     1,     1,     1,
+       0,     4,     3,     3,     3,     0,     4
+  };
+
+
+#if NETCONF_DEBUG || 1
+  // YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+  // First, the terminals, then, starting at \a YYNTOKENS, nonterminals.
+  const char*
+  const NetconfParser::yytname_[] =
+  {
+  "\"end of file\"", "error", "\"invalid token\"", "\",\"", "\":\"",
+  "\"[\"", "\"]\"", "\"{\"", "\"}\"", "\"null\"", "\"Netconf\"",
+  "\"user-context\"", "\"comment\"", "\"boot-update\"",
+  "\"subscribe-changes\"", "\"validate-changes\"", "\"managed-servers\"",
+  "\"dhcp4\"", "\"dhcp6\"", "\"d2\"", "\"ca\"", "\"model\"",
+  "\"control-socket\"", "\"socket-type\"", "\"unix\"", "\"http\"",
+  "\"stdout\"", "\"socket-name\"", "\"socket-url\"", "\"hooks-libraries\"",
+  "\"library\"", "\"parameters\"", "\"loggers\"", "\"name\"",
+  "\"output_options\"", "\"output\"", "\"debuglevel\"", "\"severity\"",
+  "\"flush\"", "\"maxsize\"", "\"maxver\"", "\"pattern\"", "START_JSON",
+  "START_NETCONF", "START_SUB_NETCONF", "\"constant string\"",
+  "\"integer\"", "\"floating point\"", "\"boolean\"", "$accept", "start",
+  "$@1", "$@2", "$@3", "sub_netconf", "$@4", "json", "value", "map", "$@5",
+  "map_value", "map_content", "not_empty_map", "list_generic", "$@6",
+  "list_content", "not_empty_list", "unknown_map_entry",
+  "netconf_syntax_map", "$@7", "global_object", "$@8",
+  "global_object_comma", "global_params", "not_empty_global_params",
+  "global_param", "boot_update", "subscribe_changes", "validate_changes",
+  "user_context", "$@9", "comment", "$@10", "hooks_libraries", "$@11",
+  "hooks_libraries_list", "not_empty_hooks_libraries_list",
+  "hooks_library", "$@12", "hooks_params", "hooks_param", "library",
+  "$@13", "parameters", "$@14", "managed_servers", "$@15",
+  "servers_entries", "not_empty_servers_entries", "server_entry",
+  "dhcp4_server", "$@16", "dhcp6_server", "$@17", "d2_server", "$@18",
+  "ca_server", "$@19", "managed_server_params", "managed_server_param",
+  "model", "$@20", "control_socket", "$@21", "control_socket_params",
+  "control_socket_param", "socket_type", "$@22", "socket_type_value",
+  "socket_name", "$@23", "socket_url", "$@24", "loggers", "$@25",
+  "loggers_entries", "logger_entry", "$@26", "logger_params",
+  "logger_param", "name", "$@27", "debuglevel", "severity", "$@28",
+  "output_options_list", "$@29", "output_options_list_content",
+  "output_entry", "$@30", "output_params_list", "output_params", "output",
+  "$@31", "flush", "maxsize", "maxver", "pattern", "$@32", YY_NULLPTR
+  };
+#endif
+
+
+#if NETCONF_DEBUG
+  const short
+  NetconfParser::yyrline_[] =
+  {
+       0,   118,   118,   118,   119,   119,   120,   120,   128,   128,
+     139,   145,   146,   147,   148,   149,   150,   151,   155,   155,
+     166,   171,   172,   180,   185,   191,   196,   196,   202,   203,
+     206,   210,   214,   226,   234,   234,   246,   246,   264,   267,
+     272,   273,   276,   277,   278,   285,   286,   287,   288,   289,
+     290,   291,   292,   293,   296,   302,   308,   314,   314,   339,
+     339,   367,   367,   378,   379,   382,   383,   384,   389,   389,
+     397,   398,   399,   402,   405,   406,   409,   409,   418,   418,
+     429,   429,   440,   441,   444,   445,   446,   454,   455,   456,
+     457,   458,   462,   462,   474,   474,   486,   486,   498,   498,
+     510,   511,   512,   518,   519,   520,   521,   522,   523,   524,
+     525,   529,   529,   539,   539,   551,   552,   553,   558,   559,
+     560,   561,   562,   563,   566,   566,   575,   576,   577,   580,
+     580,   590,   590,   603,   603,   616,   617,   618,   624,   624,
+     632,   633,   634,   639,   640,   641,   642,   643,   644,   645,
+     648,   648,   657,   663,   663,   672,   672,   683,   684,   685,
+     690,   690,   698,   699,   700,   705,   706,   707,   708,   709,
+     712,   712,   721,   727,   733,   739,   739
+  };
+
+  void
+  NetconfParser::yy_stack_print_ () const
+  {
+    *yycdebug_ << "Stack now";
+    for (stack_type::const_iterator
+           i = yystack_.begin (),
+           i_end = yystack_.end ();
+         i != i_end; ++i)
+      *yycdebug_ << ' ' << int (i->state);
+    *yycdebug_ << '\n';
+  }
+
+  void
+  NetconfParser::yy_reduce_print_ (int yyrule) const
+  {
+    int yylno = yyrline_[yyrule];
+    int yynrhs = yyr2_[yyrule];
+    // Print the symbols being reduced, and their result.
+    *yycdebug_ << "Reducing stack by rule " << yyrule - 1
+               << " (line " << yylno << "):\n";
+    // The symbols being reduced.
+    for (int yyi = 0; yyi < yynrhs; yyi++)
+      YY_SYMBOL_PRINT ("   $" << yyi + 1 << " =",
+                       yystack_[(yynrhs) - (yyi + 1)]);
+  }
+#endif // NETCONF_DEBUG
+
+
+#line 14 "netconf_parser.yy"
+} } // isc::netconf
+#line 2303 "netconf_parser.cc"
+
+#line 748 "netconf_parser.yy"
+
+
+void
+isc::netconf::NetconfParser::error(const location_type& loc,
+                               const std::string& what)
+{
+    ctx.error(loc, what);
+}
diff --git a/src/bin/netconf/netconf_parser.h b/src/bin/netconf/netconf_parser.h
new file mode 100644
index 0000000..3b8e258
--- /dev/null
+++ b/src/bin/netconf/netconf_parser.h
@@ -0,0 +1,2387 @@
+// A Bison parser, made by GNU Bison 3.8.2.
+
+// Skeleton interface for Bison LALR(1) parsers in C++
+
+// Copyright (C) 2002-2015, 2018-2021 Free Software Foundation, Inc.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+// As a special exception, you may create a larger work that contains
+// part or all of the Bison parser skeleton and distribute that work
+// under terms of your choice, so long as that work isn't itself a
+// parser generator using the skeleton or a modified version thereof
+// as a parser skeleton.  Alternatively, if you modify or redistribute
+// the parser skeleton itself, you may (at your option) remove this
+// special exception, which will cause the skeleton and the resulting
+// Bison output files to be licensed under the GNU General Public
+// License without this special exception.
+
+// This special exception was added by the Free Software Foundation in
+// version 2.2 of Bison.
+
+
+/**
+ ** \file netconf_parser.h
+ ** Define the isc::netconf::parser class.
+ */
+
+// C++ LALR(1) parser skeleton written by Akim Demaille.
+
+// DO NOT RELY ON FEATURES THAT ARE NOT DOCUMENTED in the manual,
+// especially those whose name start with YY_ or yy_.  They are
+// private implementation details that can be changed or removed.
+
+#ifndef YY_NETCONF_NETCONF_PARSER_H_INCLUDED
+# define YY_NETCONF_NETCONF_PARSER_H_INCLUDED
+// "%code requires" blocks.
+#line 17 "netconf_parser.yy"
+
+#include <string>
+#include <cc/data.h>
+#include <boost/lexical_cast.hpp>
+#include <netconf/parser_context_decl.h>
+
+using namespace isc::netconf;
+using namespace isc::data;
+using namespace std;
+
+#line 60 "netconf_parser.h"
+
+# include <cassert>
+# include <cstdlib> // std::abort
+# include <iostream>
+# include <stdexcept>
+# include <string>
+# include <vector>
+
+#if defined __cplusplus
+# define YY_CPLUSPLUS __cplusplus
+#else
+# define YY_CPLUSPLUS 199711L
+#endif
+
+// Support move semantics when possible.
+#if 201103L <= YY_CPLUSPLUS
+# define YY_MOVE           std::move
+# define YY_MOVE_OR_COPY   move
+# define YY_MOVE_REF(Type) Type&&
+# define YY_RVREF(Type)    Type&&
+# define YY_COPY(Type)     Type
+#else
+# define YY_MOVE
+# define YY_MOVE_OR_COPY   copy
+# define YY_MOVE_REF(Type) Type&
+# define YY_RVREF(Type)    const Type&
+# define YY_COPY(Type)     const Type&
+#endif
+
+// Support noexcept when possible.
+#if 201103L <= YY_CPLUSPLUS
+# define YY_NOEXCEPT noexcept
+# define YY_NOTHROW
+#else
+# define YY_NOEXCEPT
+# define YY_NOTHROW throw ()
+#endif
+
+// Support constexpr when possible.
+#if 201703 <= YY_CPLUSPLUS
+# define YY_CONSTEXPR constexpr
+#else
+# define YY_CONSTEXPR
+#endif
+# include "location.hh"
+#include <typeinfo>
+#ifndef NETCONF__ASSERT
+# include <cassert>
+# define NETCONF__ASSERT assert
+#endif
+
+
+#ifndef YY_ATTRIBUTE_PURE
+# if defined __GNUC__ && 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
+#  define YY_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+#  define YY_ATTRIBUTE_PURE
+# endif
+#endif
+
+#ifndef YY_ATTRIBUTE_UNUSED
+# if defined __GNUC__ && 2 < __GNUC__ + (7 <= __GNUC_MINOR__)
+#  define YY_ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+# else
+#  define YY_ATTRIBUTE_UNUSED
+# endif
+#endif
+
+/* Suppress unused-variable warnings by "using" E.  */
+#if ! defined lint || defined __GNUC__
+# define YY_USE(E) ((void) (E))
+#else
+# define YY_USE(E) /* empty */
+#endif
+
+/* Suppress an incorrect diagnostic about yylval being uninitialized.  */
+#if defined __GNUC__ && ! defined __ICC && 406 <= __GNUC__ * 100 + __GNUC_MINOR__
+# if __GNUC__ * 100 + __GNUC_MINOR__ < 407
+#  define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN                           \
+    _Pragma ("GCC diagnostic push")                                     \
+    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")
+# else
+#  define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN                           \
+    _Pragma ("GCC diagnostic push")                                     \
+    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")              \
+    _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
+# endif
+# define YY_IGNORE_MAYBE_UNINITIALIZED_END      \
+    _Pragma ("GCC diagnostic pop")
+#else
+# define YY_INITIAL_VALUE(Value) Value
+#endif
+#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+# define YY_IGNORE_MAYBE_UNINITIALIZED_END
+#endif
+#ifndef YY_INITIAL_VALUE
+# define YY_INITIAL_VALUE(Value) /* Nothing. */
+#endif
+
+#if defined __cplusplus && defined __GNUC__ && ! defined __ICC && 6 <= __GNUC__
+# define YY_IGNORE_USELESS_CAST_BEGIN                          \
+    _Pragma ("GCC diagnostic push")                            \
+    _Pragma ("GCC diagnostic ignored \"-Wuseless-cast\"")
+# define YY_IGNORE_USELESS_CAST_END            \
+    _Pragma ("GCC diagnostic pop")
+#endif
+#ifndef YY_IGNORE_USELESS_CAST_BEGIN
+# define YY_IGNORE_USELESS_CAST_BEGIN
+# define YY_IGNORE_USELESS_CAST_END
+#endif
+
+# ifndef YY_CAST
+#  ifdef __cplusplus
+#   define YY_CAST(Type, Val) static_cast<Type> (Val)
+#   define YY_REINTERPRET_CAST(Type, Val) reinterpret_cast<Type> (Val)
+#  else
+#   define YY_CAST(Type, Val) ((Type) (Val))
+#   define YY_REINTERPRET_CAST(Type, Val) ((Type) (Val))
+#  endif
+# endif
+# ifndef YY_NULLPTR
+#  if defined __cplusplus
+#   if 201103L <= __cplusplus
+#    define YY_NULLPTR nullptr
+#   else
+#    define YY_NULLPTR 0
+#   endif
+#  else
+#   define YY_NULLPTR ((void*)0)
+#  endif
+# endif
+
+/* Debug traces.  */
+#ifndef NETCONF_DEBUG
+# if defined YYDEBUG
+#if YYDEBUG
+#   define NETCONF_DEBUG 1
+#  else
+#   define NETCONF_DEBUG 0
+#  endif
+# else /* ! defined YYDEBUG */
+#  define NETCONF_DEBUG 1
+# endif /* ! defined YYDEBUG */
+#endif  /* ! defined NETCONF_DEBUG */
+
+#line 14 "netconf_parser.yy"
+namespace isc { namespace netconf {
+#line 209 "netconf_parser.h"
+
+
+
+
+  /// A Bison parser.
+  class NetconfParser
+  {
+  public:
+#ifdef NETCONF_STYPE
+# ifdef __GNUC__
+#  pragma GCC message "bison: do not #define NETCONF_STYPE in C++, use %define api.value.type"
+# endif
+    typedef NETCONF_STYPE value_type;
+#else
+  /// A buffer to store and retrieve objects.
+  ///
+  /// Sort of a variant, but does not keep track of the nature
+  /// of the stored data, since that knowledge is available
+  /// via the current parser state.
+  class value_type
+  {
+  public:
+    /// Type of *this.
+    typedef value_type self_type;
+
+    /// Empty construction.
+    value_type () YY_NOEXCEPT
+      : yyraw_ ()
+      , yytypeid_ (YY_NULLPTR)
+    {}
+
+    /// Construct and fill.
+    template <typename T>
+    value_type (YY_RVREF (T) t)
+      : yytypeid_ (&typeid (T))
+    {
+      NETCONF__ASSERT (sizeof (T) <= size);
+      new (yyas_<T> ()) T (YY_MOVE (t));
+    }
+
+#if 201103L <= YY_CPLUSPLUS
+    /// Non copyable.
+    value_type (const self_type&) = delete;
+    /// Non copyable.
+    self_type& operator= (const self_type&) = delete;
+#endif
+
+    /// Destruction, allowed only if empty.
+    ~value_type () YY_NOEXCEPT
+    {
+      NETCONF__ASSERT (!yytypeid_);
+    }
+
+# if 201103L <= YY_CPLUSPLUS
+    /// Instantiate a \a T in here from \a t.
+    template <typename T, typename... U>
+    T&
+    emplace (U&&... u)
+    {
+      NETCONF__ASSERT (!yytypeid_);
+      NETCONF__ASSERT (sizeof (T) <= size);
+      yytypeid_ = & typeid (T);
+      return *new (yyas_<T> ()) T (std::forward <U>(u)...);
+    }
+# else
+    /// Instantiate an empty \a T in here.
+    template <typename T>
+    T&
+    emplace ()
+    {
+      NETCONF__ASSERT (!yytypeid_);
+      NETCONF__ASSERT (sizeof (T) <= size);
+      yytypeid_ = & typeid (T);
+      return *new (yyas_<T> ()) T ();
+    }
+
+    /// Instantiate a \a T in here from \a t.
+    template <typename T>
+    T&
+    emplace (const T& t)
+    {
+      NETCONF__ASSERT (!yytypeid_);
+      NETCONF__ASSERT (sizeof (T) <= size);
+      yytypeid_ = & typeid (T);
+      return *new (yyas_<T> ()) T (t);
+    }
+# endif
+
+    /// Instantiate an empty \a T in here.
+    /// Obsolete, use emplace.
+    template <typename T>
+    T&
+    build ()
+    {
+      return emplace<T> ();
+    }
+
+    /// Instantiate a \a T in here from \a t.
+    /// Obsolete, use emplace.
+    template <typename T>
+    T&
+    build (const T& t)
+    {
+      return emplace<T> (t);
+    }
+
+    /// Accessor to a built \a T.
+    template <typename T>
+    T&
+    as () YY_NOEXCEPT
+    {
+      NETCONF__ASSERT (yytypeid_);
+      NETCONF__ASSERT (*yytypeid_ == typeid (T));
+      NETCONF__ASSERT (sizeof (T) <= size);
+      return *yyas_<T> ();
+    }
+
+    /// Const accessor to a built \a T (for %printer).
+    template <typename T>
+    const T&
+    as () const YY_NOEXCEPT
+    {
+      NETCONF__ASSERT (yytypeid_);
+      NETCONF__ASSERT (*yytypeid_ == typeid (T));
+      NETCONF__ASSERT (sizeof (T) <= size);
+      return *yyas_<T> ();
+    }
+
+    /// Swap the content with \a that, of same type.
+    ///
+    /// Both variants must be built beforehand, because swapping the actual
+    /// data requires reading it (with as()), and this is not possible on
+    /// unconstructed variants: it would require some dynamic testing, which
+    /// should not be the variant's responsibility.
+    /// Swapping between built and (possibly) non-built is done with
+    /// self_type::move ().
+    template <typename T>
+    void
+    swap (self_type& that) YY_NOEXCEPT
+    {
+      NETCONF__ASSERT (yytypeid_);
+      NETCONF__ASSERT (*yytypeid_ == *that.yytypeid_);
+      std::swap (as<T> (), that.as<T> ());
+    }
+
+    /// Move the content of \a that to this.
+    ///
+    /// Destroys \a that.
+    template <typename T>
+    void
+    move (self_type& that)
+    {
+# if 201103L <= YY_CPLUSPLUS
+      emplace<T> (std::move (that.as<T> ()));
+# else
+      emplace<T> ();
+      swap<T> (that);
+# endif
+      that.destroy<T> ();
+    }
+
+# if 201103L <= YY_CPLUSPLUS
+    /// Move the content of \a that to this.
+    template <typename T>
+    void
+    move (self_type&& that)
+    {
+      emplace<T> (std::move (that.as<T> ()));
+      that.destroy<T> ();
+    }
+#endif
+
+    /// Copy the content of \a that to this.
+    template <typename T>
+    void
+    copy (const self_type& that)
+    {
+      emplace<T> (that.as<T> ());
+    }
+
+    /// Destroy the stored \a T.
+    template <typename T>
+    void
+    destroy ()
+    {
+      as<T> ().~T ();
+      yytypeid_ = YY_NULLPTR;
+    }
+
+  private:
+#if YY_CPLUSPLUS < 201103L
+    /// Non copyable.
+    value_type (const self_type&);
+    /// Non copyable.
+    self_type& operator= (const self_type&);
+#endif
+
+    /// Accessor to raw memory as \a T.
+    template <typename T>
+    T*
+    yyas_ () YY_NOEXCEPT
+    {
+      void *yyp = yyraw_;
+      return static_cast<T*> (yyp);
+     }
+
+    /// Const accessor to raw memory as \a T.
+    template <typename T>
+    const T*
+    yyas_ () const YY_NOEXCEPT
+    {
+      const void *yyp = yyraw_;
+      return static_cast<const T*> (yyp);
+     }
+
+    /// An auxiliary type to compute the largest semantic type.
+    union union_type
+    {
+      // value
+      // map_value
+      // socket_type_value
+      char dummy1[sizeof (ElementPtr)];
+
+      // "boolean"
+      char dummy2[sizeof (bool)];
+
+      // "floating point"
+      char dummy3[sizeof (double)];
+
+      // "integer"
+      char dummy4[sizeof (int64_t)];
+
+      // "constant string"
+      char dummy5[sizeof (std::string)];
+    };
+
+    /// The size of the largest semantic type.
+    enum { size = sizeof (union_type) };
+
+    /// A buffer to store semantic values.
+    union
+    {
+      /// Strongest alignment constraints.
+      long double yyalign_me_;
+      /// A buffer large enough to store any of the semantic values.
+      char yyraw_[size];
+    };
+
+    /// Whether the content is built: if defined, the name of the stored type.
+    const std::type_info *yytypeid_;
+  };
+
+#endif
+    /// Backward compatibility (Bison 3.8).
+    typedef value_type semantic_type;
+
+    /// Symbol locations.
+    typedef location location_type;
+
+    /// Syntax errors thrown from user actions.
+    struct syntax_error : std::runtime_error
+    {
+      syntax_error (const location_type& l, const std::string& m)
+        : std::runtime_error (m)
+        , location (l)
+      {}
+
+      syntax_error (const syntax_error& s)
+        : std::runtime_error (s.what ())
+        , location (s.location)
+      {}
+
+      ~syntax_error () YY_NOEXCEPT YY_NOTHROW;
+
+      location_type location;
+    };
+
+    /// Token kinds.
+    struct token
+    {
+      enum token_kind_type
+      {
+        TOKEN_NETCONF_EMPTY = -2,
+    TOKEN_END = 0,                 // "end of file"
+    TOKEN_NETCONF_error = 256,     // error
+    TOKEN_NETCONF_UNDEF = 257,     // "invalid token"
+    TOKEN_COMMA = 258,             // ","
+    TOKEN_COLON = 259,             // ":"
+    TOKEN_LSQUARE_BRACKET = 260,   // "["
+    TOKEN_RSQUARE_BRACKET = 261,   // "]"
+    TOKEN_LCURLY_BRACKET = 262,    // "{"
+    TOKEN_RCURLY_BRACKET = 263,    // "}"
+    TOKEN_NULL_TYPE = 264,         // "null"
+    TOKEN_NETCONF = 265,           // "Netconf"
+    TOKEN_USER_CONTEXT = 266,      // "user-context"
+    TOKEN_COMMENT = 267,           // "comment"
+    TOKEN_BOOT_UPDATE = 268,       // "boot-update"
+    TOKEN_SUBSCRIBE_CHANGES = 269, // "subscribe-changes"
+    TOKEN_VALIDATE_CHANGES = 270,  // "validate-changes"
+    TOKEN_MANAGED_SERVERS = 271,   // "managed-servers"
+    TOKEN_DHCP4_SERVER = 272,      // "dhcp4"
+    TOKEN_DHCP6_SERVER = 273,      // "dhcp6"
+    TOKEN_D2_SERVER = 274,         // "d2"
+    TOKEN_CA_SERVER = 275,         // "ca"
+    TOKEN_MODEL = 276,             // "model"
+    TOKEN_CONTROL_SOCKET = 277,    // "control-socket"
+    TOKEN_SOCKET_TYPE = 278,       // "socket-type"
+    TOKEN_UNIX = 279,              // "unix"
+    TOKEN_HTTP = 280,              // "http"
+    TOKEN_STDOUT = 281,            // "stdout"
+    TOKEN_SOCKET_NAME = 282,       // "socket-name"
+    TOKEN_SOCKET_URL = 283,        // "socket-url"
+    TOKEN_HOOKS_LIBRARIES = 284,   // "hooks-libraries"
+    TOKEN_LIBRARY = 285,           // "library"
+    TOKEN_PARAMETERS = 286,        // "parameters"
+    TOKEN_LOGGERS = 287,           // "loggers"
+    TOKEN_NAME = 288,              // "name"
+    TOKEN_OUTPUT_OPTIONS = 289,    // "output_options"
+    TOKEN_OUTPUT = 290,            // "output"
+    TOKEN_DEBUGLEVEL = 291,        // "debuglevel"
+    TOKEN_SEVERITY = 292,          // "severity"
+    TOKEN_FLUSH = 293,             // "flush"
+    TOKEN_MAXSIZE = 294,           // "maxsize"
+    TOKEN_MAXVER = 295,            // "maxver"
+    TOKEN_PATTERN = 296,           // "pattern"
+    TOKEN_START_JSON = 297,        // START_JSON
+    TOKEN_START_NETCONF = 298,     // START_NETCONF
+    TOKEN_START_SUB_NETCONF = 299, // START_SUB_NETCONF
+    TOKEN_STRING = 300,            // "constant string"
+    TOKEN_INTEGER = 301,           // "integer"
+    TOKEN_FLOAT = 302,             // "floating point"
+    TOKEN_BOOLEAN = 303            // "boolean"
+      };
+      /// Backward compatibility alias (Bison 3.6).
+      typedef token_kind_type yytokentype;
+    };
+
+    /// Token kind, as returned by yylex.
+    typedef token::token_kind_type token_kind_type;
+
+    /// Backward compatibility alias (Bison 3.6).
+    typedef token_kind_type token_type;
+
+    /// Symbol kinds.
+    struct symbol_kind
+    {
+      enum symbol_kind_type
+      {
+        YYNTOKENS = 49, ///< Number of tokens.
+        S_YYEMPTY = -2,
+        S_YYEOF = 0,                             // "end of file"
+        S_YYerror = 1,                           // error
+        S_YYUNDEF = 2,                           // "invalid token"
+        S_COMMA = 3,                             // ","
+        S_COLON = 4,                             // ":"
+        S_LSQUARE_BRACKET = 5,                   // "["
+        S_RSQUARE_BRACKET = 6,                   // "]"
+        S_LCURLY_BRACKET = 7,                    // "{"
+        S_RCURLY_BRACKET = 8,                    // "}"
+        S_NULL_TYPE = 9,                         // "null"
+        S_NETCONF = 10,                          // "Netconf"
+        S_USER_CONTEXT = 11,                     // "user-context"
+        S_COMMENT = 12,                          // "comment"
+        S_BOOT_UPDATE = 13,                      // "boot-update"
+        S_SUBSCRIBE_CHANGES = 14,                // "subscribe-changes"
+        S_VALIDATE_CHANGES = 15,                 // "validate-changes"
+        S_MANAGED_SERVERS = 16,                  // "managed-servers"
+        S_DHCP4_SERVER = 17,                     // "dhcp4"
+        S_DHCP6_SERVER = 18,                     // "dhcp6"
+        S_D2_SERVER = 19,                        // "d2"
+        S_CA_SERVER = 20,                        // "ca"
+        S_MODEL = 21,                            // "model"
+        S_CONTROL_SOCKET = 22,                   // "control-socket"
+        S_SOCKET_TYPE = 23,                      // "socket-type"
+        S_UNIX = 24,                             // "unix"
+        S_HTTP = 25,                             // "http"
+        S_STDOUT = 26,                           // "stdout"
+        S_SOCKET_NAME = 27,                      // "socket-name"
+        S_SOCKET_URL = 28,                       // "socket-url"
+        S_HOOKS_LIBRARIES = 29,                  // "hooks-libraries"
+        S_LIBRARY = 30,                          // "library"
+        S_PARAMETERS = 31,                       // "parameters"
+        S_LOGGERS = 32,                          // "loggers"
+        S_NAME = 33,                             // "name"
+        S_OUTPUT_OPTIONS = 34,                   // "output_options"
+        S_OUTPUT = 35,                           // "output"
+        S_DEBUGLEVEL = 36,                       // "debuglevel"
+        S_SEVERITY = 37,                         // "severity"
+        S_FLUSH = 38,                            // "flush"
+        S_MAXSIZE = 39,                          // "maxsize"
+        S_MAXVER = 40,                           // "maxver"
+        S_PATTERN = 41,                          // "pattern"
+        S_START_JSON = 42,                       // START_JSON
+        S_START_NETCONF = 43,                    // START_NETCONF
+        S_START_SUB_NETCONF = 44,                // START_SUB_NETCONF
+        S_STRING = 45,                           // "constant string"
+        S_INTEGER = 46,                          // "integer"
+        S_FLOAT = 47,                            // "floating point"
+        S_BOOLEAN = 48,                          // "boolean"
+        S_YYACCEPT = 49,                         // $accept
+        S_start = 50,                            // start
+        S_51_1 = 51,                             // $@1
+        S_52_2 = 52,                             // $@2
+        S_53_3 = 53,                             // $@3
+        S_sub_netconf = 54,                      // sub_netconf
+        S_55_4 = 55,                             // $@4
+        S_json = 56,                             // json
+        S_value = 57,                            // value
+        S_map = 58,                              // map
+        S_59_5 = 59,                             // $@5
+        S_map_value = 60,                        // map_value
+        S_map_content = 61,                      // map_content
+        S_not_empty_map = 62,                    // not_empty_map
+        S_list_generic = 63,                     // list_generic
+        S_64_6 = 64,                             // $@6
+        S_list_content = 65,                     // list_content
+        S_not_empty_list = 66,                   // not_empty_list
+        S_unknown_map_entry = 67,                // unknown_map_entry
+        S_netconf_syntax_map = 68,               // netconf_syntax_map
+        S_69_7 = 69,                             // $@7
+        S_global_object = 70,                    // global_object
+        S_71_8 = 71,                             // $@8
+        S_global_object_comma = 72,              // global_object_comma
+        S_global_params = 73,                    // global_params
+        S_not_empty_global_params = 74,          // not_empty_global_params
+        S_global_param = 75,                     // global_param
+        S_boot_update = 76,                      // boot_update
+        S_subscribe_changes = 77,                // subscribe_changes
+        S_validate_changes = 78,                 // validate_changes
+        S_user_context = 79,                     // user_context
+        S_80_9 = 80,                             // $@9
+        S_comment = 81,                          // comment
+        S_82_10 = 82,                            // $@10
+        S_hooks_libraries = 83,                  // hooks_libraries
+        S_84_11 = 84,                            // $@11
+        S_hooks_libraries_list = 85,             // hooks_libraries_list
+        S_not_empty_hooks_libraries_list = 86,   // not_empty_hooks_libraries_list
+        S_hooks_library = 87,                    // hooks_library
+        S_88_12 = 88,                            // $@12
+        S_hooks_params = 89,                     // hooks_params
+        S_hooks_param = 90,                      // hooks_param
+        S_library = 91,                          // library
+        S_92_13 = 92,                            // $@13
+        S_parameters = 93,                       // parameters
+        S_94_14 = 94,                            // $@14
+        S_managed_servers = 95,                  // managed_servers
+        S_96_15 = 96,                            // $@15
+        S_servers_entries = 97,                  // servers_entries
+        S_not_empty_servers_entries = 98,        // not_empty_servers_entries
+        S_server_entry = 99,                     // server_entry
+        S_dhcp4_server = 100,                    // dhcp4_server
+        S_101_16 = 101,                          // $@16
+        S_dhcp6_server = 102,                    // dhcp6_server
+        S_103_17 = 103,                          // $@17
+        S_d2_server = 104,                       // d2_server
+        S_105_18 = 105,                          // $@18
+        S_ca_server = 106,                       // ca_server
+        S_107_19 = 107,                          // $@19
+        S_managed_server_params = 108,           // managed_server_params
+        S_managed_server_param = 109,            // managed_server_param
+        S_model = 110,                           // model
+        S_111_20 = 111,                          // $@20
+        S_control_socket = 112,                  // control_socket
+        S_113_21 = 113,                          // $@21
+        S_control_socket_params = 114,           // control_socket_params
+        S_control_socket_param = 115,            // control_socket_param
+        S_socket_type = 116,                     // socket_type
+        S_117_22 = 117,                          // $@22
+        S_socket_type_value = 118,               // socket_type_value
+        S_socket_name = 119,                     // socket_name
+        S_120_23 = 120,                          // $@23
+        S_socket_url = 121,                      // socket_url
+        S_122_24 = 122,                          // $@24
+        S_loggers = 123,                         // loggers
+        S_124_25 = 124,                          // $@25
+        S_loggers_entries = 125,                 // loggers_entries
+        S_logger_entry = 126,                    // logger_entry
+        S_127_26 = 127,                          // $@26
+        S_logger_params = 128,                   // logger_params
+        S_logger_param = 129,                    // logger_param
+        S_name = 130,                            // name
+        S_131_27 = 131,                          // $@27
+        S_debuglevel = 132,                      // debuglevel
+        S_severity = 133,                        // severity
+        S_134_28 = 134,                          // $@28
+        S_output_options_list = 135,             // output_options_list
+        S_136_29 = 136,                          // $@29
+        S_output_options_list_content = 137,     // output_options_list_content
+        S_output_entry = 138,                    // output_entry
+        S_139_30 = 139,                          // $@30
+        S_output_params_list = 140,              // output_params_list
+        S_output_params = 141,                   // output_params
+        S_output = 142,                          // output
+        S_143_31 = 143,                          // $@31
+        S_flush = 144,                           // flush
+        S_maxsize = 145,                         // maxsize
+        S_maxver = 146,                          // maxver
+        S_pattern = 147,                         // pattern
+        S_148_32 = 148                           // $@32
+      };
+    };
+
+    /// (Internal) symbol kind.
+    typedef symbol_kind::symbol_kind_type symbol_kind_type;
+
+    /// The number of tokens.
+    static const symbol_kind_type YYNTOKENS = symbol_kind::YYNTOKENS;
+
+    /// A complete symbol.
+    ///
+    /// Expects its Base type to provide access to the symbol kind
+    /// via kind ().
+    ///
+    /// Provide access to semantic value and location.
+    template <typename Base>
+    struct basic_symbol : Base
+    {
+      /// Alias to Base.
+      typedef Base super_type;
+
+      /// Default constructor.
+      basic_symbol () YY_NOEXCEPT
+        : value ()
+        , location ()
+      {}
+
+#if 201103L <= YY_CPLUSPLUS
+      /// Move constructor.
+      basic_symbol (basic_symbol&& that)
+        : Base (std::move (that))
+        , value ()
+        , location (std::move (that.location))
+      {
+        switch (this->kind ())
+    {
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_map_value: // map_value
+      case symbol_kind::S_socket_type_value: // socket_type_value
+        value.move< ElementPtr > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_BOOLEAN: // "boolean"
+        value.move< bool > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_FLOAT: // "floating point"
+        value.move< double > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_INTEGER: // "integer"
+        value.move< int64_t > (std::move (that.value));
+        break;
+
+      case symbol_kind::S_STRING: // "constant string"
+        value.move< std::string > (std::move (that.value));
+        break;
+
+      default:
+        break;
+    }
+
+      }
+#endif
+
+      /// Copy constructor.
+      basic_symbol (const basic_symbol& that);
+
+      /// Constructors for typed symbols.
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, location_type&& l)
+        : Base (t)
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const location_type& l)
+        : Base (t)
+        , location (l)
+      {}
+#endif
+
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, ElementPtr&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const ElementPtr& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, bool&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const bool& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, double&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const double& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, int64_t&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const int64_t& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+
+#if 201103L <= YY_CPLUSPLUS
+      basic_symbol (typename Base::kind_type t, std::string&& v, location_type&& l)
+        : Base (t)
+        , value (std::move (v))
+        , location (std::move (l))
+      {}
+#else
+      basic_symbol (typename Base::kind_type t, const std::string& v, const location_type& l)
+        : Base (t)
+        , value (v)
+        , location (l)
+      {}
+#endif
+
+      /// Destroy the symbol.
+      ~basic_symbol ()
+      {
+        clear ();
+      }
+
+
+
+      /// Destroy contents, and record that is empty.
+      void clear () YY_NOEXCEPT
+      {
+        // User destructor.
+        symbol_kind_type yykind = this->kind ();
+        basic_symbol<Base>& yysym = *this;
+        (void) yysym;
+        switch (yykind)
+        {
+       default:
+          break;
+        }
+
+        // Value type destructor.
+switch (yykind)
+    {
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_map_value: // map_value
+      case symbol_kind::S_socket_type_value: // socket_type_value
+        value.template destroy< ElementPtr > ();
+        break;
+
+      case symbol_kind::S_BOOLEAN: // "boolean"
+        value.template destroy< bool > ();
+        break;
+
+      case symbol_kind::S_FLOAT: // "floating point"
+        value.template destroy< double > ();
+        break;
+
+      case symbol_kind::S_INTEGER: // "integer"
+        value.template destroy< int64_t > ();
+        break;
+
+      case symbol_kind::S_STRING: // "constant string"
+        value.template destroy< std::string > ();
+        break;
+
+      default:
+        break;
+    }
+
+        Base::clear ();
+      }
+
+      /// The user-facing name of this symbol.
+      std::string name () const YY_NOEXCEPT
+      {
+        return NetconfParser::symbol_name (this->kind ());
+      }
+
+      /// Backward compatibility (Bison 3.6).
+      symbol_kind_type type_get () const YY_NOEXCEPT;
+
+      /// Whether empty.
+      bool empty () const YY_NOEXCEPT;
+
+      /// Destructive move, \a s is emptied into this.
+      void move (basic_symbol& s);
+
+      /// The semantic value.
+      value_type value;
+
+      /// The location.
+      location_type location;
+
+    private:
+#if YY_CPLUSPLUS < 201103L
+      /// Assignment operator.
+      basic_symbol& operator= (const basic_symbol& that);
+#endif
+    };
+
+    /// Type access provider for token (enum) based symbols.
+    struct by_kind
+    {
+      /// The symbol kind as needed by the constructor.
+      typedef token_kind_type kind_type;
+
+      /// Default constructor.
+      by_kind () YY_NOEXCEPT;
+
+#if 201103L <= YY_CPLUSPLUS
+      /// Move constructor.
+      by_kind (by_kind&& that) YY_NOEXCEPT;
+#endif
+
+      /// Copy constructor.
+      by_kind (const by_kind& that) YY_NOEXCEPT;
+
+      /// Constructor from (external) token numbers.
+      by_kind (kind_type t) YY_NOEXCEPT;
+
+
+
+      /// Record that this symbol is empty.
+      void clear () YY_NOEXCEPT;
+
+      /// Steal the symbol kind from \a that.
+      void move (by_kind& that);
+
+      /// The (internal) type number (corresponding to \a type).
+      /// \a empty when empty.
+      symbol_kind_type kind () const YY_NOEXCEPT;
+
+      /// Backward compatibility (Bison 3.6).
+      symbol_kind_type type_get () const YY_NOEXCEPT;
+
+      /// The symbol kind.
+      /// \a S_YYEMPTY when empty.
+      symbol_kind_type kind_;
+    };
+
+    /// Backward compatibility for a private implementation detail (Bison 3.6).
+    typedef by_kind by_type;
+
+    /// "External" symbols: returned by the scanner.
+    struct symbol_type : basic_symbol<by_kind>
+    {
+      /// Superclass.
+      typedef basic_symbol<by_kind> super_type;
+
+      /// Empty symbol.
+      symbol_type () YY_NOEXCEPT {}
+
+      /// Constructor for valueless symbols, and symbols from each type.
+#if 201103L <= YY_CPLUSPLUS
+      symbol_type (int tok, location_type l)
+        : super_type (token_kind_type (tok), std::move (l))
+#else
+      symbol_type (int tok, const location_type& l)
+        : super_type (token_kind_type (tok), l)
+#endif
+      {
+#if !defined _MSC_VER || defined __clang__
+        NETCONF__ASSERT (tok == token::TOKEN_END
+                   || (token::TOKEN_NETCONF_error <= tok && tok <= token::TOKEN_START_SUB_NETCONF));
+#endif
+      }
+#if 201103L <= YY_CPLUSPLUS
+      symbol_type (int tok, bool v, location_type l)
+        : super_type (token_kind_type (tok), std::move (v), std::move (l))
+#else
+      symbol_type (int tok, const bool& v, const location_type& l)
+        : super_type (token_kind_type (tok), v, l)
+#endif
+      {
+#if !defined _MSC_VER || defined __clang__
+        NETCONF__ASSERT (tok == token::TOKEN_BOOLEAN);
+#endif
+      }
+#if 201103L <= YY_CPLUSPLUS
+      symbol_type (int tok, double v, location_type l)
+        : super_type (token_kind_type (tok), std::move (v), std::move (l))
+#else
+      symbol_type (int tok, const double& v, const location_type& l)
+        : super_type (token_kind_type (tok), v, l)
+#endif
+      {
+#if !defined _MSC_VER || defined __clang__
+        NETCONF__ASSERT (tok == token::TOKEN_FLOAT);
+#endif
+      }
+#if 201103L <= YY_CPLUSPLUS
+      symbol_type (int tok, int64_t v, location_type l)
+        : super_type (token_kind_type (tok), std::move (v), std::move (l))
+#else
+      symbol_type (int tok, const int64_t& v, const location_type& l)
+        : super_type (token_kind_type (tok), v, l)
+#endif
+      {
+#if !defined _MSC_VER || defined __clang__
+        NETCONF__ASSERT (tok == token::TOKEN_INTEGER);
+#endif
+      }
+#if 201103L <= YY_CPLUSPLUS
+      symbol_type (int tok, std::string v, location_type l)
+        : super_type (token_kind_type (tok), std::move (v), std::move (l))
+#else
+      symbol_type (int tok, const std::string& v, const location_type& l)
+        : super_type (token_kind_type (tok), v, l)
+#endif
+      {
+#if !defined _MSC_VER || defined __clang__
+        NETCONF__ASSERT (tok == token::TOKEN_STRING);
+#endif
+      }
+    };
+
+    /// Build a parser object.
+    NetconfParser (isc::netconf::ParserContext& ctx_yyarg);
+    virtual ~NetconfParser ();
+
+#if 201103L <= YY_CPLUSPLUS
+    /// Non copyable.
+    NetconfParser (const NetconfParser&) = delete;
+    /// Non copyable.
+    NetconfParser& operator= (const NetconfParser&) = delete;
+#endif
+
+    /// Parse.  An alias for parse ().
+    /// \returns  0 iff parsing succeeded.
+    int operator() ();
+
+    /// Parse.
+    /// \returns  0 iff parsing succeeded.
+    virtual int parse ();
+
+#if NETCONF_DEBUG
+    /// The current debugging stream.
+    std::ostream& debug_stream () const YY_ATTRIBUTE_PURE;
+    /// Set the current debugging stream.
+    void set_debug_stream (std::ostream &);
+
+    /// Type for debugging levels.
+    typedef int debug_level_type;
+    /// The current debugging level.
+    debug_level_type debug_level () const YY_ATTRIBUTE_PURE;
+    /// Set the current debugging level.
+    void set_debug_level (debug_level_type l);
+#endif
+
+    /// Report a syntax error.
+    /// \param loc    where the syntax error is found.
+    /// \param msg    a description of the syntax error.
+    virtual void error (const location_type& loc, const std::string& msg);
+
+    /// Report a syntax error.
+    void error (const syntax_error& err);
+
+    /// The user-facing name of the symbol whose (internal) number is
+    /// YYSYMBOL.  No bounds checking.
+    static std::string symbol_name (symbol_kind_type yysymbol);
+
+    // Implementation of make_symbol for each token kind.
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_END (location_type l)
+      {
+        return symbol_type (token::TOKEN_END, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_END (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_END, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NETCONF_error (location_type l)
+      {
+        return symbol_type (token::TOKEN_NETCONF_error, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NETCONF_error (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_NETCONF_error, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NETCONF_UNDEF (location_type l)
+      {
+        return symbol_type (token::TOKEN_NETCONF_UNDEF, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NETCONF_UNDEF (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_NETCONF_UNDEF, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_COMMA (location_type l)
+      {
+        return symbol_type (token::TOKEN_COMMA, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_COMMA (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_COMMA, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_COLON (location_type l)
+      {
+        return symbol_type (token::TOKEN_COLON, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_COLON (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_COLON, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_LSQUARE_BRACKET (location_type l)
+      {
+        return symbol_type (token::TOKEN_LSQUARE_BRACKET, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_LSQUARE_BRACKET (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_LSQUARE_BRACKET, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_RSQUARE_BRACKET (location_type l)
+      {
+        return symbol_type (token::TOKEN_RSQUARE_BRACKET, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_RSQUARE_BRACKET (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_RSQUARE_BRACKET, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_LCURLY_BRACKET (location_type l)
+      {
+        return symbol_type (token::TOKEN_LCURLY_BRACKET, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_LCURLY_BRACKET (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_LCURLY_BRACKET, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_RCURLY_BRACKET (location_type l)
+      {
+        return symbol_type (token::TOKEN_RCURLY_BRACKET, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_RCURLY_BRACKET (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_RCURLY_BRACKET, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NULL_TYPE (location_type l)
+      {
+        return symbol_type (token::TOKEN_NULL_TYPE, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NULL_TYPE (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_NULL_TYPE, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NETCONF (location_type l)
+      {
+        return symbol_type (token::TOKEN_NETCONF, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NETCONF (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_NETCONF, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_USER_CONTEXT (location_type l)
+      {
+        return symbol_type (token::TOKEN_USER_CONTEXT, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_USER_CONTEXT (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_USER_CONTEXT, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_COMMENT (location_type l)
+      {
+        return symbol_type (token::TOKEN_COMMENT, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_COMMENT (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_COMMENT, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_BOOT_UPDATE (location_type l)
+      {
+        return symbol_type (token::TOKEN_BOOT_UPDATE, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_BOOT_UPDATE (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_BOOT_UPDATE, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_SUBSCRIBE_CHANGES (location_type l)
+      {
+        return symbol_type (token::TOKEN_SUBSCRIBE_CHANGES, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_SUBSCRIBE_CHANGES (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_SUBSCRIBE_CHANGES, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_VALIDATE_CHANGES (location_type l)
+      {
+        return symbol_type (token::TOKEN_VALIDATE_CHANGES, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_VALIDATE_CHANGES (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_VALIDATE_CHANGES, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_MANAGED_SERVERS (location_type l)
+      {
+        return symbol_type (token::TOKEN_MANAGED_SERVERS, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_MANAGED_SERVERS (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_MANAGED_SERVERS, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_DHCP4_SERVER (location_type l)
+      {
+        return symbol_type (token::TOKEN_DHCP4_SERVER, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_DHCP4_SERVER (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_DHCP4_SERVER, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_DHCP6_SERVER (location_type l)
+      {
+        return symbol_type (token::TOKEN_DHCP6_SERVER, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_DHCP6_SERVER (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_DHCP6_SERVER, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_D2_SERVER (location_type l)
+      {
+        return symbol_type (token::TOKEN_D2_SERVER, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_D2_SERVER (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_D2_SERVER, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_CA_SERVER (location_type l)
+      {
+        return symbol_type (token::TOKEN_CA_SERVER, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_CA_SERVER (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_CA_SERVER, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_MODEL (location_type l)
+      {
+        return symbol_type (token::TOKEN_MODEL, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_MODEL (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_MODEL, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_CONTROL_SOCKET (location_type l)
+      {
+        return symbol_type (token::TOKEN_CONTROL_SOCKET, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_CONTROL_SOCKET (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_CONTROL_SOCKET, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_SOCKET_TYPE (location_type l)
+      {
+        return symbol_type (token::TOKEN_SOCKET_TYPE, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_SOCKET_TYPE (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_SOCKET_TYPE, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_UNIX (location_type l)
+      {
+        return symbol_type (token::TOKEN_UNIX, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_UNIX (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_UNIX, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_HTTP (location_type l)
+      {
+        return symbol_type (token::TOKEN_HTTP, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_HTTP (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_HTTP, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_STDOUT (location_type l)
+      {
+        return symbol_type (token::TOKEN_STDOUT, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_STDOUT (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_STDOUT, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_SOCKET_NAME (location_type l)
+      {
+        return symbol_type (token::TOKEN_SOCKET_NAME, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_SOCKET_NAME (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_SOCKET_NAME, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_SOCKET_URL (location_type l)
+      {
+        return symbol_type (token::TOKEN_SOCKET_URL, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_SOCKET_URL (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_SOCKET_URL, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_HOOKS_LIBRARIES (location_type l)
+      {
+        return symbol_type (token::TOKEN_HOOKS_LIBRARIES, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_HOOKS_LIBRARIES (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_HOOKS_LIBRARIES, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_LIBRARY (location_type l)
+      {
+        return symbol_type (token::TOKEN_LIBRARY, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_LIBRARY (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_LIBRARY, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PARAMETERS (location_type l)
+      {
+        return symbol_type (token::TOKEN_PARAMETERS, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PARAMETERS (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_PARAMETERS, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_LOGGERS (location_type l)
+      {
+        return symbol_type (token::TOKEN_LOGGERS, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_LOGGERS (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_LOGGERS, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_NAME (location_type l)
+      {
+        return symbol_type (token::TOKEN_NAME, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_NAME (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_NAME, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_OUTPUT_OPTIONS (location_type l)
+      {
+        return symbol_type (token::TOKEN_OUTPUT_OPTIONS, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_OUTPUT_OPTIONS (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_OUTPUT_OPTIONS, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_OUTPUT (location_type l)
+      {
+        return symbol_type (token::TOKEN_OUTPUT, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_OUTPUT (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_OUTPUT, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_DEBUGLEVEL (location_type l)
+      {
+        return symbol_type (token::TOKEN_DEBUGLEVEL, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_DEBUGLEVEL (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_DEBUGLEVEL, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_SEVERITY (location_type l)
+      {
+        return symbol_type (token::TOKEN_SEVERITY, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_SEVERITY (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_SEVERITY, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_FLUSH (location_type l)
+      {
+        return symbol_type (token::TOKEN_FLUSH, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_FLUSH (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_FLUSH, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_MAXSIZE (location_type l)
+      {
+        return symbol_type (token::TOKEN_MAXSIZE, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_MAXSIZE (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_MAXSIZE, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_MAXVER (location_type l)
+      {
+        return symbol_type (token::TOKEN_MAXVER, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_MAXVER (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_MAXVER, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_PATTERN (location_type l)
+      {
+        return symbol_type (token::TOKEN_PATTERN, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_PATTERN (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_PATTERN, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_START_JSON (location_type l)
+      {
+        return symbol_type (token::TOKEN_START_JSON, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_START_JSON (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_START_JSON, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_START_NETCONF (location_type l)
+      {
+        return symbol_type (token::TOKEN_START_NETCONF, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_START_NETCONF (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_START_NETCONF, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_START_SUB_NETCONF (location_type l)
+      {
+        return symbol_type (token::TOKEN_START_SUB_NETCONF, std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_START_SUB_NETCONF (const location_type& l)
+      {
+        return symbol_type (token::TOKEN_START_SUB_NETCONF, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_STRING (std::string v, location_type l)
+      {
+        return symbol_type (token::TOKEN_STRING, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_STRING (const std::string& v, const location_type& l)
+      {
+        return symbol_type (token::TOKEN_STRING, v, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_INTEGER (int64_t v, location_type l)
+      {
+        return symbol_type (token::TOKEN_INTEGER, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_INTEGER (const int64_t& v, const location_type& l)
+      {
+        return symbol_type (token::TOKEN_INTEGER, v, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_FLOAT (double v, location_type l)
+      {
+        return symbol_type (token::TOKEN_FLOAT, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_FLOAT (const double& v, const location_type& l)
+      {
+        return symbol_type (token::TOKEN_FLOAT, v, l);
+      }
+#endif
+#if 201103L <= YY_CPLUSPLUS
+      static
+      symbol_type
+      make_BOOLEAN (bool v, location_type l)
+      {
+        return symbol_type (token::TOKEN_BOOLEAN, std::move (v), std::move (l));
+      }
+#else
+      static
+      symbol_type
+      make_BOOLEAN (const bool& v, const location_type& l)
+      {
+        return symbol_type (token::TOKEN_BOOLEAN, v, l);
+      }
+#endif
+
+
+    class context
+    {
+    public:
+      context (const NetconfParser& yyparser, const symbol_type& yyla);
+      const symbol_type& lookahead () const YY_NOEXCEPT { return yyla_; }
+      symbol_kind_type token () const YY_NOEXCEPT { return yyla_.kind (); }
+      const location_type& location () const YY_NOEXCEPT { return yyla_.location; }
+
+      /// Put in YYARG at most YYARGN of the expected tokens, and return the
+      /// number of tokens stored in YYARG.  If YYARG is null, return the
+      /// number of expected tokens (guaranteed to be less than YYNTOKENS).
+      int expected_tokens (symbol_kind_type yyarg[], int yyargn) const;
+
+    private:
+      const NetconfParser& yyparser_;
+      const symbol_type& yyla_;
+    };
+
+  private:
+#if YY_CPLUSPLUS < 201103L
+    /// Non copyable.
+    NetconfParser (const NetconfParser&);
+    /// Non copyable.
+    NetconfParser& operator= (const NetconfParser&);
+#endif
+
+
+    /// Stored state numbers (used for stacks).
+    typedef short state_type;
+
+    /// The arguments of the error message.
+    int yy_syntax_error_arguments_ (const context& yyctx,
+                                    symbol_kind_type yyarg[], int yyargn) const;
+
+    /// Generate an error message.
+    /// \param yyctx     the context in which the error occurred.
+    virtual std::string yysyntax_error_ (const context& yyctx) const;
+    /// Compute post-reduction state.
+    /// \param yystate   the current state
+    /// \param yysym     the nonterminal to push on the stack
+    static state_type yy_lr_goto_state_ (state_type yystate, int yysym);
+
+    /// Whether the given \c yypact_ value indicates a defaulted state.
+    /// \param yyvalue   the value to check
+    static bool yy_pact_value_is_default_ (int yyvalue) YY_NOEXCEPT;
+
+    /// Whether the given \c yytable_ value indicates a syntax error.
+    /// \param yyvalue   the value to check
+    static bool yy_table_value_is_error_ (int yyvalue) YY_NOEXCEPT;
+
+    static const signed char yypact_ninf_;
+    static const signed char yytable_ninf_;
+
+    /// Convert a scanner token kind \a t to a symbol kind.
+    /// In theory \a t should be a token_kind_type, but character literals
+    /// are valid, yet not members of the token_kind_type enum.
+    static symbol_kind_type yytranslate_ (int t) YY_NOEXCEPT;
+
+    /// Convert the symbol name \a n to a form suitable for a diagnostic.
+    static std::string yytnamerr_ (const char *yystr);
+
+    /// For a symbol, its name in clear.
+    static const char* const yytname_[];
+
+
+    // Tables.
+    // YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
+    // STATE-NUM.
+    static const short yypact_[];
+
+    // YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM.
+    // Performed when YYTABLE does not specify something else to do.  Zero
+    // means the default is an error.
+    static const unsigned char yydefact_[];
+
+    // YYPGOTO[NTERM-NUM].
+    static const signed char yypgoto_[];
+
+    // YYDEFGOTO[NTERM-NUM].
+    static const short yydefgoto_[];
+
+    // YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM.  If
+    // positive, shift that token.  If negative, reduce the rule whose
+    // number is the opposite.  If YYTABLE_NINF, syntax error.
+    static const short yytable_[];
+
+    static const short yycheck_[];
+
+    // YYSTOS[STATE-NUM] -- The symbol kind of the accessing symbol of
+    // state STATE-NUM.
+    static const unsigned char yystos_[];
+
+    // YYR1[RULE-NUM] -- Symbol kind of the left-hand side of rule RULE-NUM.
+    static const unsigned char yyr1_[];
+
+    // YYR2[RULE-NUM] -- Number of symbols on the right-hand side of rule RULE-NUM.
+    static const signed char yyr2_[];
+
+
+#if NETCONF_DEBUG
+    // YYRLINE[YYN] -- Source line where rule number YYN was defined.
+    static const short yyrline_[];
+    /// Report on the debug stream that the rule \a r is going to be reduced.
+    virtual void yy_reduce_print_ (int r) const;
+    /// Print the state stack on the debug stream.
+    virtual void yy_stack_print_ () const;
+
+    /// Debugging level.
+    int yydebug_;
+    /// Debug stream.
+    std::ostream* yycdebug_;
+
+    /// \brief Display a symbol kind, value and location.
+    /// \param yyo    The output stream.
+    /// \param yysym  The symbol.
+    template <typename Base>
+    void yy_print_ (std::ostream& yyo, const basic_symbol<Base>& yysym) const;
+#endif
+
+    /// \brief Reclaim the memory associated to a symbol.
+    /// \param yymsg     Why this token is reclaimed.
+    ///                  If null, print nothing.
+    /// \param yysym     The symbol.
+    template <typename Base>
+    void yy_destroy_ (const char* yymsg, basic_symbol<Base>& yysym) const;
+
+  private:
+    /// Type access provider for state based symbols.
+    struct by_state
+    {
+      /// Default constructor.
+      by_state () YY_NOEXCEPT;
+
+      /// The symbol kind as needed by the constructor.
+      typedef state_type kind_type;
+
+      /// Constructor.
+      by_state (kind_type s) YY_NOEXCEPT;
+
+      /// Copy constructor.
+      by_state (const by_state& that) YY_NOEXCEPT;
+
+      /// Record that this symbol is empty.
+      void clear () YY_NOEXCEPT;
+
+      /// Steal the symbol kind from \a that.
+      void move (by_state& that);
+
+      /// The symbol kind (corresponding to \a state).
+      /// \a symbol_kind::S_YYEMPTY when empty.
+      symbol_kind_type kind () const YY_NOEXCEPT;
+
+      /// The state number used to denote an empty symbol.
+      /// We use the initial state, as it does not have a value.
+      enum { empty_state = 0 };
+
+      /// The state.
+      /// \a empty when empty.
+      state_type state;
+    };
+
+    /// "Internal" symbol: element of the stack.
+    struct stack_symbol_type : basic_symbol<by_state>
+    {
+      /// Superclass.
+      typedef basic_symbol<by_state> super_type;
+      /// Construct an empty symbol.
+      stack_symbol_type ();
+      /// Move or copy construction.
+      stack_symbol_type (YY_RVREF (stack_symbol_type) that);
+      /// Steal the contents from \a sym to build this.
+      stack_symbol_type (state_type s, YY_MOVE_REF (symbol_type) sym);
+#if YY_CPLUSPLUS < 201103L
+      /// Assignment, needed by push_back by some old implementations.
+      /// Moves the contents of that.
+      stack_symbol_type& operator= (stack_symbol_type& that);
+
+      /// Assignment, needed by push_back by other implementations.
+      /// Needed by some other old implementations.
+      stack_symbol_type& operator= (const stack_symbol_type& that);
+#endif
+    };
+
+    /// A stack with random access from its top.
+    template <typename T, typename S = std::vector<T> >
+    class stack
+    {
+    public:
+      // Hide our reversed order.
+      typedef typename S::iterator iterator;
+      typedef typename S::const_iterator const_iterator;
+      typedef typename S::size_type size_type;
+      typedef typename std::ptrdiff_t index_type;
+
+      stack (size_type n = 200) YY_NOEXCEPT
+        : seq_ (n)
+      {}
+
+#if 201103L <= YY_CPLUSPLUS
+      /// Non copyable.
+      stack (const stack&) = delete;
+      /// Non copyable.
+      stack& operator= (const stack&) = delete;
+#endif
+
+      /// Random access.
+      ///
+      /// Index 0 returns the topmost element.
+      const T&
+      operator[] (index_type i) const
+      {
+        return seq_[size_type (size () - 1 - i)];
+      }
+
+      /// Random access.
+      ///
+      /// Index 0 returns the topmost element.
+      T&
+      operator[] (index_type i)
+      {
+        return seq_[size_type (size () - 1 - i)];
+      }
+
+      /// Steal the contents of \a t.
+      ///
+      /// Close to move-semantics.
+      void
+      push (YY_MOVE_REF (T) t)
+      {
+        seq_.push_back (T ());
+        operator[] (0).move (t);
+      }
+
+      /// Pop elements from the stack.
+      void
+      pop (std::ptrdiff_t n = 1) YY_NOEXCEPT
+      {
+        for (; 0 < n; --n)
+          seq_.pop_back ();
+      }
+
+      /// Pop all elements from the stack.
+      void
+      clear () YY_NOEXCEPT
+      {
+        seq_.clear ();
+      }
+
+      /// Number of elements on the stack.
+      index_type
+      size () const YY_NOEXCEPT
+      {
+        return index_type (seq_.size ());
+      }
+
+      /// Iterator on top of the stack (going downwards).
+      const_iterator
+      begin () const YY_NOEXCEPT
+      {
+        return seq_.begin ();
+      }
+
+      /// Bottom of the stack.
+      const_iterator
+      end () const YY_NOEXCEPT
+      {
+        return seq_.end ();
+      }
+
+      /// Present a slice of the top of a stack.
+      class slice
+      {
+      public:
+        slice (const stack& stack, index_type range) YY_NOEXCEPT
+          : stack_ (stack)
+          , range_ (range)
+        {}
+
+        const T&
+        operator[] (index_type i) const
+        {
+          return stack_[range_ - i];
+        }
+
+      private:
+        const stack& stack_;
+        index_type range_;
+      };
+
+    private:
+#if YY_CPLUSPLUS < 201103L
+      /// Non copyable.
+      stack (const stack&);
+      /// Non copyable.
+      stack& operator= (const stack&);
+#endif
+      /// The wrapped container.
+      S seq_;
+    };
+
+
+    /// Stack type.
+    typedef stack<stack_symbol_type> stack_type;
+
+    /// The stack.
+    stack_type yystack_;
+
+    /// Push a new state on the stack.
+    /// \param m    a debug message to display
+    ///             if null, no trace is output.
+    /// \param sym  the symbol
+    /// \warning the contents of \a s.value is stolen.
+    void yypush_ (const char* m, YY_MOVE_REF (stack_symbol_type) sym);
+
+    /// Push a new look ahead token on the state on the stack.
+    /// \param m    a debug message to display
+    ///             if null, no trace is output.
+    /// \param s    the state
+    /// \param sym  the symbol (for its value and location).
+    /// \warning the contents of \a sym.value is stolen.
+    void yypush_ (const char* m, state_type s, YY_MOVE_REF (symbol_type) sym);
+
+    /// Pop \a n symbols from the stack.
+    void yypop_ (int n = 1) YY_NOEXCEPT;
+
+    /// Constants.
+    enum
+    {
+      yylast_ = 221,     ///< Last index in yytable_.
+      yynnts_ = 100,  ///< Number of nonterminal symbols.
+      yyfinal_ = 8 ///< Termination state number.
+    };
+
+
+    // User arguments.
+    isc::netconf::ParserContext& ctx;
+
+  };
+
+  inline
+  NetconfParser::symbol_kind_type
+  NetconfParser::yytranslate_ (int t) YY_NOEXCEPT
+  {
+    // YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to
+    // TOKEN-NUM as returned by yylex.
+    static
+    const signed char
+    translate_table[] =
+    {
+       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
+       5,     6,     7,     8,     9,    10,    11,    12,    13,    14,
+      15,    16,    17,    18,    19,    20,    21,    22,    23,    24,
+      25,    26,    27,    28,    29,    30,    31,    32,    33,    34,
+      35,    36,    37,    38,    39,    40,    41,    42,    43,    44,
+      45,    46,    47,    48
+    };
+    // Last valid token kind.
+    const int code_max = 303;
+
+    if (t <= 0)
+      return symbol_kind::S_YYEOF;
+    else if (t <= code_max)
+      return static_cast <symbol_kind_type> (translate_table[t]);
+    else
+      return symbol_kind::S_YYUNDEF;
+  }
+
+  // basic_symbol.
+  template <typename Base>
+  NetconfParser::basic_symbol<Base>::basic_symbol (const basic_symbol& that)
+    : Base (that)
+    , value ()
+    , location (that.location)
+  {
+    switch (this->kind ())
+    {
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_map_value: // map_value
+      case symbol_kind::S_socket_type_value: // socket_type_value
+        value.copy< ElementPtr > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_BOOLEAN: // "boolean"
+        value.copy< bool > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_FLOAT: // "floating point"
+        value.copy< double > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_INTEGER: // "integer"
+        value.copy< int64_t > (YY_MOVE (that.value));
+        break;
+
+      case symbol_kind::S_STRING: // "constant string"
+        value.copy< std::string > (YY_MOVE (that.value));
+        break;
+
+      default:
+        break;
+    }
+
+  }
+
+
+
+
+  template <typename Base>
+  NetconfParser::symbol_kind_type
+  NetconfParser::basic_symbol<Base>::type_get () const YY_NOEXCEPT
+  {
+    return this->kind ();
+  }
+
+
+  template <typename Base>
+  bool
+  NetconfParser::basic_symbol<Base>::empty () const YY_NOEXCEPT
+  {
+    return this->kind () == symbol_kind::S_YYEMPTY;
+  }
+
+  template <typename Base>
+  void
+  NetconfParser::basic_symbol<Base>::move (basic_symbol& s)
+  {
+    super_type::move (s);
+    switch (this->kind ())
+    {
+      case symbol_kind::S_value: // value
+      case symbol_kind::S_map_value: // map_value
+      case symbol_kind::S_socket_type_value: // socket_type_value
+        value.move< ElementPtr > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_BOOLEAN: // "boolean"
+        value.move< bool > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_FLOAT: // "floating point"
+        value.move< double > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_INTEGER: // "integer"
+        value.move< int64_t > (YY_MOVE (s.value));
+        break;
+
+      case symbol_kind::S_STRING: // "constant string"
+        value.move< std::string > (YY_MOVE (s.value));
+        break;
+
+      default:
+        break;
+    }
+
+    location = YY_MOVE (s.location);
+  }
+
+  // by_kind.
+  inline
+  NetconfParser::by_kind::by_kind () YY_NOEXCEPT
+    : kind_ (symbol_kind::S_YYEMPTY)
+  {}
+
+#if 201103L <= YY_CPLUSPLUS
+  inline
+  NetconfParser::by_kind::by_kind (by_kind&& that) YY_NOEXCEPT
+    : kind_ (that.kind_)
+  {
+    that.clear ();
+  }
+#endif
+
+  inline
+  NetconfParser::by_kind::by_kind (const by_kind& that) YY_NOEXCEPT
+    : kind_ (that.kind_)
+  {}
+
+  inline
+  NetconfParser::by_kind::by_kind (token_kind_type t) YY_NOEXCEPT
+    : kind_ (yytranslate_ (t))
+  {}
+
+
+
+  inline
+  void
+  NetconfParser::by_kind::clear () YY_NOEXCEPT
+  {
+    kind_ = symbol_kind::S_YYEMPTY;
+  }
+
+  inline
+  void
+  NetconfParser::by_kind::move (by_kind& that)
+  {
+    kind_ = that.kind_;
+    that.clear ();
+  }
+
+  inline
+  NetconfParser::symbol_kind_type
+  NetconfParser::by_kind::kind () const YY_NOEXCEPT
+  {
+    return kind_;
+  }
+
+
+  inline
+  NetconfParser::symbol_kind_type
+  NetconfParser::by_kind::type_get () const YY_NOEXCEPT
+  {
+    return this->kind ();
+  }
+
+
+#line 14 "netconf_parser.yy"
+} } // isc::netconf
+#line 2383 "netconf_parser.h"
+
+
+
+
+#endif // !YY_NETCONF_NETCONF_PARSER_H_INCLUDED
diff --git a/src/bin/netconf/netconf_parser.yy b/src/bin/netconf/netconf_parser.yy
new file mode 100644
index 0000000..10048de
--- /dev/null
+++ b/src/bin/netconf/netconf_parser.yy
@@ -0,0 +1,755 @@
+/* Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+
+   This Source Code Form is subject to the terms of the Mozilla Public
+   License, v. 2.0. If a copy of the MPL was not distributed with this
+   file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+%skeleton "lalr1.cc" /* -*- C++ -*- */
+%require "3.3.0"
+%defines
+%define api.parser.class {NetconfParser}
+%define api.prefix {netconf_}
+%define api.token.constructor
+%define api.value.type variant
+%define api.namespace {isc::netconf}
+%define parse.assert
+%code requires
+{
+#include <string>
+#include <cc/data.h>
+#include <boost/lexical_cast.hpp>
+#include <netconf/parser_context_decl.h>
+
+using namespace isc::netconf;
+using namespace isc::data;
+using namespace std;
+}
+// The parsing context.
+%param { isc::netconf::ParserContext& ctx }
+%locations
+%define parse.trace
+%define parse.error verbose
+%code
+{
+#include <netconf/parser_context.h>
+}
+
+
+%define api.token.prefix {TOKEN_}
+// Tokens in an order which makes sense and related to the intended use.
+// Actual regexps for tokens are defined in netconf_lexer.ll.
+%token
+  END  0  "end of file"
+  COMMA ","
+  COLON ":"
+  LSQUARE_BRACKET "["
+  RSQUARE_BRACKET "]"
+  LCURLY_BRACKET "{"
+  RCURLY_BRACKET "}"
+  NULL_TYPE "null"
+
+  NETCONF "Netconf"
+
+  USER_CONTEXT "user-context"
+  COMMENT "comment"
+
+  BOOT_UPDATE "boot-update"
+  SUBSCRIBE_CHANGES "subscribe-changes"
+  VALIDATE_CHANGES "validate-changes"
+
+  MANAGED_SERVERS "managed-servers"
+  DHCP4_SERVER "dhcp4"
+  DHCP6_SERVER "dhcp6"
+  D2_SERVER "d2"
+  CA_SERVER "ca"
+  MODEL "model"
+  CONTROL_SOCKET "control-socket"
+  SOCKET_TYPE "socket-type"
+  UNIX "unix"
+  HTTP "http"
+  STDOUT "stdout"
+  SOCKET_NAME "socket-name"
+  SOCKET_URL "socket-url"
+
+  HOOKS_LIBRARIES "hooks-libraries"
+  LIBRARY "library"
+  PARAMETERS "parameters"
+
+  LOGGERS "loggers"
+  NAME "name"
+  OUTPUT_OPTIONS "output_options"
+  OUTPUT "output"
+  DEBUGLEVEL "debuglevel"
+  SEVERITY "severity"
+  FLUSH "flush"
+  MAXSIZE "maxsize"
+  MAXVER "maxver"
+  PATTERN "pattern"
+
+  // Not real tokens, just a way to signal what the parser is expected to
+  // parse. This define the starting point. It either can be full grammar
+  // (START_NETCONF), part of the grammar related to Netconf (START_SUB_NETCONF)
+  // or can be any valid JSON (START_JSON)
+  START_JSON
+  START_NETCONF
+  START_SUB_NETCONF
+;
+
+%token <std::string> STRING "constant string"
+%token <int64_t> INTEGER "integer"
+%token <double> FLOAT "floating point"
+%token <bool> BOOLEAN "boolean"
+
+%type <ElementPtr> value
+%type <ElementPtr> map_value
+%type <ElementPtr> socket_type_value
+
+%printer { yyoutput << $$; } <*>;
+
+%%
+
+// The whole grammar starts with a map, because the config file
+// consists of Netconf, DhcpX, Logger and DhcpDdns entries in one big { }.
+%start start;
+
+// The starting token can be one of those listed below. Note these are
+// "fake" tokens. They're produced by the lexer before any input text
+// is parsed.
+start: START_JSON      { ctx.ctx_ = ctx.NO_KEYWORDS; } json
+     | START_NETCONF     { ctx.ctx_ = ctx.CONFIG; } netconf_syntax_map
+     | START_SUB_NETCONF { ctx.ctx_ = ctx.NETCONF; } sub_netconf
+     ;
+
+// This rule defines a "shortcut". Instead of specifying the whole structure
+// expected by full grammar, we can tell the parser to start from content of
+// the Netconf. This is very useful for unit-testing, so we don't need
+// to repeat the outer map and "Netconf" map. We can simply provide
+// the contents of that map.
+sub_netconf: LCURLY_BRACKET {
+    // Parse the Netconf map
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.push_back(m);
+} global_params RCURLY_BRACKET {
+    // parsing completed
+};
+
+// --- generic JSON parser -----------------------------------------------------
+
+// json expression can be a value. What value means is defined below.
+json: value {
+    // Push back the JSON value on the stack
+    ctx.stack_.push_back($1);
+};
+
+// Rules for value. This can be one of the primary types allowed in JSON.
+value: INTEGER { $$ = ElementPtr(new IntElement($1, ctx.loc2pos(@1))); }
+     | FLOAT { $$ = ElementPtr(new DoubleElement($1, ctx.loc2pos(@1))); }
+     | BOOLEAN { $$ = ElementPtr(new BoolElement($1, ctx.loc2pos(@1))); }
+     | STRING { $$ = ElementPtr(new StringElement($1, ctx.loc2pos(@1))); }
+     | NULL_TYPE { $$ = ElementPtr(new NullElement(ctx.loc2pos(@1))); }
+     | map { $$ = ctx.stack_.back(); ctx.stack_.pop_back(); }
+     | list_generic { $$ = ctx.stack_.back(); ctx.stack_.pop_back(); }
+     ;
+
+// Rule for map. It will start with {, have some content and will end with }.
+map: LCURLY_BRACKET {
+    // This code is executed when we're about to start parsing
+    // the content of the map
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.push_back(m);
+} map_content RCURLY_BRACKET {
+    // map parsing completed. If we ever want to do any wrap up
+    // (maybe some sanity checking), this would be the best place
+    // for it.
+};
+
+map_value: map { $$ = ctx.stack_.back(); ctx.stack_.pop_back(); };
+
+// Rule for map content. In some cases it is allowed to have an empty map,
+// so we should say that explicitly. In most cases, though, there will
+// be some actual content inside. That's defined by not_empty_map
+map_content: %empty // empty map
+           | not_empty_map
+           ;
+
+// Rule for content of the map. It can have one of two formats:
+// 1) string: value
+// 2) non_empty_map , string: value
+// The first case covers a single entry, while the second case
+// covers all longer lists recursively.
+not_empty_map: STRING COLON value {
+                  // map containing a single entry
+                  ctx.unique($1, ctx.loc2pos(@1));
+                  ctx.stack_.back()->set($1, $3);
+                  }
+             | not_empty_map COMMA STRING COLON value {
+                  // map consisting of a shorter map followed by
+                  // comma and string:value
+                  ctx.unique($3, ctx.loc2pos(@3));
+                  ctx.stack_.back()->set($3, $5);
+                  }
+             | not_empty_map COMMA {
+                 ctx.warnAboutExtraCommas(@2);
+                 }
+             ;
+
+list_generic: LSQUARE_BRACKET {
+    ElementPtr l(new ListElement(ctx.loc2pos(@1)));
+    ctx.stack_.push_back(l);
+} list_content RSQUARE_BRACKET {
+};
+
+list_content: %empty // Empty list
+            | not_empty_list
+            ;
+
+not_empty_list: value {
+                  // List consisting of a single element.
+                  ctx.stack_.back()->add($1);
+                  }
+              | not_empty_list COMMA value {
+                  // List ending with , and a value.
+                  ctx.stack_.back()->add($3);
+                  }
+              | not_empty_list COMMA {
+                  ctx.warnAboutExtraCommas(@2);
+                  }
+              ;
+
+// --- generic JSON parser ends here -------------------------------------------
+
+// --- syntax checking parser starts here --------------------------------------
+
+// Unknown keyword in a map. This clever rule can be added to any map
+// if you want to have a nice expression printed when unknown (mistyped?)
+// parameter is found.
+unknown_map_entry: STRING COLON {
+    const std::string& where = ctx.contextName();
+    const std::string& keyword = $1;
+    error(@1,
+          "got unexpected keyword \"" + keyword + "\" in " + where + " map.");
+};
+
+// This defines the top-level { } that holds Netconf object.
+netconf_syntax_map: LCURLY_BRACKET {
+    // This code is executed when we're about to start parsing
+    // the content of the map
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.push_back(m);
+} global_object RCURLY_BRACKET {
+    // map parsing completed. If we ever want to do any wrap up
+    // (maybe some sanity checking), this would be the best place
+    // for it.
+};
+
+// This represents the single top level entry, e.g. Netconf.
+global_object: NETCONF {
+    // Let's create a MapElement that will represent it, add it to the
+    // top level map (that's already on the stack) and put the new map
+    // on the stack as well, so child elements will be able to add
+    // themselves to it.
+
+    // Prevent against duplicate.
+    ctx.unique("Netconf", ctx.loc2pos(@1));
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->set("Netconf", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.NETCONF);
+} COLON LCURLY_BRACKET global_params RCURLY_BRACKET {
+    // Ok, we're done with parsing Netconf. Let's take the map
+    // off the stack.
+    ctx.stack_.pop_back();
+    ctx.leave();
+}
+             | global_object_comma
+             ;
+
+global_object_comma: global_object COMMA {
+    ctx.warnAboutExtraCommas(@2);
+};
+
+
+global_params: %empty
+             | not_empty_global_params
+             ;
+
+not_empty_global_params: global_param
+                       | not_empty_global_params COMMA global_param
+                       | not_empty_global_params COMMA {
+                           ctx.warnAboutExtraCommas(@2);
+                           }
+                       ;
+
+// These are the parameters that are allowed in the top-level for
+// Netconf.
+global_param: boot_update
+            | subscribe_changes
+            | validate_changes
+            | managed_servers
+            | hooks_libraries
+            | loggers
+            | user_context
+            | comment
+            | unknown_map_entry
+            ;
+
+boot_update: BOOT_UPDATE COLON BOOLEAN {
+    ctx.unique("boot-update", ctx.loc2pos(@1));
+    ElementPtr flag(new BoolElement($3, ctx.loc2pos(@3)));
+    ctx.stack_.back()->set("boot-update", flag);
+};
+
+subscribe_changes: SUBSCRIBE_CHANGES COLON BOOLEAN {
+    ctx.unique("subscribe-changes", ctx.loc2pos(@1));
+    ElementPtr flag(new BoolElement($3, ctx.loc2pos(@3)));
+    ctx.stack_.back()->set("subscribe-changes", flag);
+};
+
+validate_changes: VALIDATE_CHANGES COLON BOOLEAN {
+    ctx.unique("validate-changes", ctx.loc2pos(@1));
+    ElementPtr flag(new BoolElement($3, ctx.loc2pos(@3)));
+    ctx.stack_.back()->set("validate-changes", flag);
+};
+
+user_context: USER_CONTEXT {
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON map_value {
+    ElementPtr parent = ctx.stack_.back();
+    ElementPtr user_context = $4;
+    ConstElementPtr old = parent->get("user-context");
+
+    // Handle already existing user context
+    if (old) {
+        // Check if it was a comment or a duplicate
+        if ((old->size() != 1) || !old->contains("comment")) {
+            std::stringstream msg;
+            msg << "duplicate user-context entries (previous at "
+                << old->getPosition().str() << ")";
+            error(@1, msg.str());
+        }
+        // Merge the comment
+        user_context->set("comment", old->get("comment"));
+    }
+
+    // Set the user context
+    parent->set("user-context", user_context);
+    ctx.leave();
+};
+
+comment: COMMENT {
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON STRING {
+    ElementPtr parent = ctx.stack_.back();
+    ElementPtr user_context(new MapElement(ctx.loc2pos(@1)));
+    ElementPtr comment(new StringElement($4, ctx.loc2pos(@4)));
+    user_context->set("comment", comment);
+
+    // Handle already existing user context
+    ConstElementPtr old = parent->get("user-context");
+    if (old) {
+        // Check for duplicate comment
+        if (old->contains("comment")) {
+            std::stringstream msg;
+            msg << "duplicate user-context/comment entries (previous at "
+                << old->getPosition().str() << ")";
+            error(@1, msg.str());
+        }
+        // Merge the user context in the comment
+        merge(user_context, old);
+    }
+
+    // Set the user context
+    parent->set("user-context", user_context);
+    ctx.leave();
+};
+
+// --- hooks-libraries ---------------------------------------------------------
+hooks_libraries: HOOKS_LIBRARIES {
+    ctx.unique("hooks-libraries", ctx.loc2pos(@1));
+    ElementPtr l(new ListElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->set("hooks-libraries", l);
+    ctx.stack_.push_back(l);
+    ctx.enter(ctx.HOOKS_LIBRARIES);
+} COLON LSQUARE_BRACKET hooks_libraries_list RSQUARE_BRACKET {
+    ctx.stack_.pop_back();
+    ctx.leave();
+};
+
+hooks_libraries_list: %empty
+                    | not_empty_hooks_libraries_list
+                    ;
+
+not_empty_hooks_libraries_list: hooks_library
+    | not_empty_hooks_libraries_list COMMA hooks_library
+    | not_empty_hooks_libraries_list COMMA {
+        ctx.warnAboutExtraCommas(@2);
+        }
+    ;
+
+hooks_library: LCURLY_BRACKET {
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->add(m);
+    ctx.stack_.push_back(m);
+} hooks_params RCURLY_BRACKET {
+    ctx.stack_.pop_back();
+};
+
+hooks_params: hooks_param
+            | hooks_params COMMA hooks_param
+            | hooks_params COMMA {
+              ctx.warnAboutExtraCommas(@2);
+              }
+            | unknown_map_entry
+            ;
+
+hooks_param: library
+           | parameters
+           ;
+
+library: LIBRARY {
+    ctx.unique("library", ctx.loc2pos(@1));
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON STRING {
+    ElementPtr lib(new StringElement($4, ctx.loc2pos(@4)));
+    ctx.stack_.back()->set("library", lib);
+    ctx.leave();
+};
+
+parameters: PARAMETERS {
+    ctx.unique("parameters", ctx.loc2pos(@1));
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON map_value {
+    ctx.stack_.back()->set("parameters", $4);
+    ctx.leave();
+};
+
+// --- hooks-libraries end here ------------------------------------------------
+
+// --- managed-servers starts here ---------------------------------------------
+managed_servers: MANAGED_SERVERS COLON LCURLY_BRACKET {
+    ctx.unique("managed-servers", ctx.loc2pos(@1));
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->set("managed-servers", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.MANAGED_SERVERS);
+} servers_entries RCURLY_BRACKET {
+    ctx.stack_.pop_back();
+    ctx.leave();
+};
+
+servers_entries: %empty
+               | not_empty_servers_entries
+               ;
+
+not_empty_servers_entries: server_entry
+                         | not_empty_servers_entries COMMA server_entry
+                         | not_empty_servers_entries COMMA {
+                             ctx.warnAboutExtraCommas(@2);
+                             }
+                         ;
+
+
+// We currently support four types of servers: DHCPv4, DHCPv6, D2 and CA
+// (even though D2 socket support is not yet merged).
+server_entry: dhcp4_server
+            | dhcp6_server
+            | d2_server
+            | ca_server
+            | unknown_map_entry
+            ;
+
+// That's an entry for dhcp4 server.
+dhcp4_server: DHCP4_SERVER {
+    ctx.unique("dhcp4", ctx.loc2pos(@1));
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->set("dhcp4", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.SERVER);
+} COLON LCURLY_BRACKET managed_server_params RCURLY_BRACKET {
+    ctx.stack_.pop_back();
+    ctx.leave();
+};
+
+// That's an entry for dhcp6 server.
+dhcp6_server: DHCP6_SERVER {
+    ctx.unique("dhcp6", ctx.loc2pos(@1));
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->set("dhcp6", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.SERVER);
+} COLON LCURLY_BRACKET managed_server_params RCURLY_BRACKET {
+    ctx.stack_.pop_back();
+    ctx.leave();
+};
+
+// That's an entry for d2 server.
+d2_server: D2_SERVER {
+    ctx.unique("d2", ctx.loc2pos(@1));
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->set("d2", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.SERVER);
+} COLON LCURLY_BRACKET managed_server_params RCURLY_BRACKET {
+    ctx.stack_.pop_back();
+    ctx.leave();
+};
+
+// That's an entry for ca server.
+ca_server: CA_SERVER {
+    ctx.unique("ca", ctx.loc2pos(@1));
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->set("ca", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.SERVER);
+} COLON LCURLY_BRACKET managed_server_params RCURLY_BRACKET {
+    ctx.stack_.pop_back();
+    ctx.leave();
+};
+
+// Server parameters consist of one or more parameters.
+managed_server_params: managed_server_param
+                     | managed_server_params COMMA managed_server_param
+                     | managed_server_params COMMA {
+                         ctx.warnAboutExtraCommas(@2);
+                         }
+                     ;
+
+// We currently support two server parameters: model and control-socket.
+managed_server_param: model
+                    | boot_update
+                    | subscribe_changes
+                    | validate_changes
+                    | control_socket
+                    | user_context
+                    | comment
+                    | unknown_map_entry
+                    ;
+
+// YANG model
+model: MODEL {
+    ctx.unique("model", ctx.loc2pos(@1));
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON STRING {
+    ElementPtr model(new StringElement($4, ctx.loc2pos(@4)));
+    ctx.stack_.back()->set("model", model);
+    ctx.leave();
+};
+
+// Control socket.
+control_socket: CONTROL_SOCKET {
+    ctx.unique("control-socket", ctx.loc2pos(@1));
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->set("control-socket", m);
+    ctx.stack_.push_back(m);
+    ctx.enter(ctx.CONTROL_SOCKET);
+} COLON LCURLY_BRACKET control_socket_params RCURLY_BRACKET {
+    ctx.stack_.pop_back();
+    ctx.leave();
+};
+
+// control-socket parameters
+control_socket_params: control_socket_param
+                     | control_socket_params COMMA control_socket_param
+                     | control_socket_params COMMA {
+                         ctx.warnAboutExtraCommas(@2);
+                         }
+                     ;
+
+control_socket_param: socket_type
+                    | socket_name
+                    | socket_url
+                    | user_context
+                    | comment
+                    | unknown_map_entry
+                    ;
+
+socket_type: SOCKET_TYPE {
+    ctx.unique("socket-type", ctx.loc2pos(@1));
+    ctx.enter(ctx.SOCKET_TYPE);
+} COLON socket_type_value {
+    ctx.stack_.back()->set("socket-type", $4);
+    ctx.leave();
+};
+
+// We currently allow unix, http and stdout control socket types.
+socket_type_value : UNIX { $$ = ElementPtr(new StringElement("unix", ctx.loc2pos(@1))); }
+                  | HTTP { $$ = ElementPtr(new StringElement("http", ctx.loc2pos(@1))); }
+                  | STDOUT { $$ = ElementPtr(new StringElement("stdout", ctx.loc2pos(@1))); }
+                  ;
+// Unix name.
+socket_name: SOCKET_NAME {
+    ctx.unique("socket-name", ctx.loc2pos(@1));
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON STRING {
+    ElementPtr name(new StringElement($4, ctx.loc2pos(@4)));
+    ctx.stack_.back()->set("socket-name", name);
+    ctx.leave();
+};
+
+// HTTP url.
+socket_url: SOCKET_URL {
+    ctx.unique("socket-url", ctx.loc2pos(@1));
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON STRING {
+    ElementPtr url(new StringElement($4, ctx.loc2pos(@4)));
+    ctx.stack_.back()->set("socket-url", url);
+    ctx.leave();
+};
+
+// --- managed-servers end here ------------------------------------------------
+
+// --- Loggers starts here -----------------------------------------------------
+
+loggers: LOGGERS {
+    ctx.unique("loggers", ctx.loc2pos(@1));
+    ElementPtr l(new ListElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->set("loggers", l);
+    ctx.stack_.push_back(l);
+    ctx.enter(ctx.LOGGERS);
+}  COLON LSQUARE_BRACKET loggers_entries RSQUARE_BRACKET {
+    ctx.stack_.pop_back();
+    ctx.leave();
+};
+
+// These are the parameters allowed in loggers: either one logger
+// entry or multiple entries separate by commas.
+loggers_entries: logger_entry
+               | loggers_entries COMMA logger_entry
+               | loggers_entries COMMA {
+                   ctx.warnAboutExtraCommas(@2);
+                   }
+               ;
+
+// This defines a single entry defined in loggers.
+logger_entry: LCURLY_BRACKET {
+    ElementPtr l(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->add(l);
+    ctx.stack_.push_back(l);
+} logger_params RCURLY_BRACKET {
+    ctx.stack_.pop_back();
+};
+
+logger_params: logger_param
+             | logger_params COMMA logger_param
+             | logger_params COMMA {
+                 ctx.warnAboutExtraCommas(@2);
+                 }
+             ;
+
+logger_param: name
+            | output_options_list
+            | debuglevel
+            | severity
+            | user_context
+            | comment
+            | unknown_map_entry
+            ;
+
+name: NAME {
+    ctx.unique("name", ctx.loc2pos(@1));
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON STRING {
+    ElementPtr name(new StringElement($4, ctx.loc2pos(@4)));
+    ctx.stack_.back()->set("name", name);
+    ctx.leave();
+};
+
+debuglevel: DEBUGLEVEL COLON INTEGER {
+    ctx.unique("debuglevel", ctx.loc2pos(@1));
+    ElementPtr dl(new IntElement($3, ctx.loc2pos(@3)));
+    ctx.stack_.back()->set("debuglevel", dl);
+};
+
+severity: SEVERITY {
+    ctx.unique("severity", ctx.loc2pos(@1));
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON STRING {
+    ElementPtr sev(new StringElement($4, ctx.loc2pos(@4)));
+    ctx.stack_.back()->set("severity", sev);
+    ctx.leave();
+};
+
+output_options_list: OUTPUT_OPTIONS {
+    ctx.unique("output_options", ctx.loc2pos(@1));
+    ElementPtr l(new ListElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->set("output_options", l);
+    ctx.stack_.push_back(l);
+    ctx.enter(ctx.OUTPUT_OPTIONS);
+} COLON LSQUARE_BRACKET output_options_list_content RSQUARE_BRACKET {
+    ctx.stack_.pop_back();
+    ctx.leave();
+};
+
+output_options_list_content: output_entry
+                           | output_options_list_content COMMA output_entry
+                           | output_options_list_content COMMA {
+                               ctx.warnAboutExtraCommas(@2);
+                               }
+                           ;
+
+output_entry: LCURLY_BRACKET {
+    ElementPtr m(new MapElement(ctx.loc2pos(@1)));
+    ctx.stack_.back()->add(m);
+    ctx.stack_.push_back(m);
+} output_params_list RCURLY_BRACKET {
+    ctx.stack_.pop_back();
+};
+
+output_params_list: output_params
+             | output_params_list COMMA output_params
+             | output_params_list COMMA {
+                 ctx.warnAboutExtraCommas(@2);
+                 }
+             ;
+
+output_params: output
+             | flush
+             | maxsize
+             | maxver
+             | pattern
+             ;
+
+output: OUTPUT {
+    ctx.unique("output", ctx.loc2pos(@1));
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON STRING {
+    ElementPtr sev(new StringElement($4, ctx.loc2pos(@4)));
+    ctx.stack_.back()->set("output", sev);
+    ctx.leave();
+};
+
+flush: FLUSH COLON BOOLEAN {
+    ctx.unique("flush", ctx.loc2pos(@1));
+    ElementPtr flush(new BoolElement($3, ctx.loc2pos(@3)));
+    ctx.stack_.back()->set("flush", flush);
+};
+
+maxsize: MAXSIZE COLON INTEGER {
+    ctx.unique("maxsize", ctx.loc2pos(@1));
+    ElementPtr maxsize(new IntElement($3, ctx.loc2pos(@3)));
+    ctx.stack_.back()->set("maxsize", maxsize);
+};
+
+maxver: MAXVER COLON INTEGER {
+    ctx.unique("maxver", ctx.loc2pos(@1));
+    ElementPtr maxver(new IntElement($3, ctx.loc2pos(@3)));
+    ctx.stack_.back()->set("maxver", maxver);
+};
+
+pattern: PATTERN {
+    ctx.unique("pattern", ctx.loc2pos(@1));
+    ctx.enter(ctx.NO_KEYWORDS);
+} COLON STRING {
+    ElementPtr sev(new StringElement($4, ctx.loc2pos(@4)));
+    ctx.stack_.back()->set("pattern", sev);
+    ctx.leave();
+};
+
+%%
+
+void
+isc::netconf::NetconfParser::error(const location_type& loc,
+                               const std::string& what)
+{
+    ctx.error(loc, what);
+}
diff --git a/src/bin/netconf/netconf_process.cc b/src/bin/netconf/netconf_process.cc
new file mode 100644
index 0000000..f8430dd
--- /dev/null
+++ b/src/bin/netconf/netconf_process.cc
@@ -0,0 +1,99 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <asiolink/asio_wrapper.h>
+#include <netconf/netconf.h>
+#include <netconf/netconf_process.h>
+#include <netconf/netconf_controller.h>
+#include <netconf/netconf_log.h>
+#include <asiolink/io_address.h>
+#include <asiolink/io_error.h>
+#include <cc/command_interpreter.h>
+#include <config/timeouts.h>
+
+#include <boost/pointer_cast.hpp>
+
+using namespace isc::asiolink;
+using namespace isc::config;
+using namespace isc::data;
+using namespace isc::http;
+using namespace isc::process;
+
+namespace isc {
+namespace netconf {
+
+NetconfProcess::NetconfProcess(const char* name,
+                               const asiolink::IOServicePtr& io_service)
+    : DProcessBase(name, io_service, DCfgMgrBasePtr(new NetconfCfgMgr())) {
+}
+
+void
+NetconfProcess::init() {
+}
+
+void
+NetconfProcess::run() {
+    LOG_INFO(netconf_logger, NETCONF_STARTED).arg(VERSION);
+
+    try {
+        // Call init.
+        agent_.init(getNetconfCfgMgr());
+
+        // Let's process incoming data or expiring timers in a loop until
+        // shutdown condition is detected.
+        while (!shouldShutdown()) {
+            runIO();
+        }
+        stopIOService();
+
+    } catch (const std::exception& ex) {
+        LOG_FATAL(netconf_logger, NETCONF_FAILED).arg(ex.what());
+        try {
+            stopIOService();
+        } catch (...) {
+            // Ignore double errors
+        }
+        isc_throw(DProcessBaseError,
+                  "Process run method failed: " << ex.what());
+    }
+
+    LOG_DEBUG(netconf_logger, isc::log::DBGLVL_START_SHUT, NETCONF_RUN_EXIT);
+}
+
+size_t
+NetconfProcess::runIO() {
+    size_t cnt = getIoService()->get_io_service().poll();
+    if (!cnt) {
+        cnt = getIoService()->get_io_service().run_one();
+    }
+    return (cnt);
+}
+
+isc::data::ConstElementPtr
+NetconfProcess::shutdown(isc::data::ConstElementPtr /*args*/) {
+    setShutdownFlag(true);
+    return (isc::config::createAnswer(0, "Netconf is shutting down"));
+}
+
+isc::data::ConstElementPtr
+NetconfProcess::configure(isc::data::ConstElementPtr config_set,
+                          bool check_only) {
+    ConstElementPtr answer =
+        getCfgMgr()->simpleParseConfig(config_set, check_only);
+    int rcode = 0;
+    config::parseAnswer(rcode, answer);
+    return (answer);
+}
+
+NetconfCfgMgrPtr
+NetconfProcess::getNetconfCfgMgr() {
+    return (boost::dynamic_pointer_cast<NetconfCfgMgr>(getCfgMgr()));
+}
+
+} // namespace isc::netconf
+} // namespace isc
diff --git a/src/bin/netconf/netconf_process.h b/src/bin/netconf/netconf_process.h
new file mode 100644
index 0000000..e8b24b1
--- /dev/null
+++ b/src/bin/netconf/netconf_process.h
@@ -0,0 +1,106 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef NETCONF_PROCESS_H
+#define NETCONF_PROCESS_H
+
+#include <netconf/netconf.h>
+#include <process/d_process.h>
+
+#include <vector>
+
+namespace isc {
+namespace netconf {
+
+/// @brief Kea Netconf Application Process
+///
+/// NetconfProcess provides top level application logic for the Netconf,
+/// a process managing Kea servers using YANG / NETCONF.
+///
+/// The Netconf receives YANG configuration change events, converts them
+/// to JSON commands sent to the respective Kea servers.
+class NetconfProcess : public process::DProcessBase {
+public:
+    /// @brief Constructor
+    ///
+    /// @param name name is a text label for the process. Generally used
+    /// in log statements, but otherwise arbitrary.
+    /// @param io_service is the io_service used by the caller for
+    /// asynchronous event handling.
+    NetconfProcess(const char* name, const asiolink::IOServicePtr& io_service);
+
+    /// @brief Destructor
+    virtual ~NetconfProcess() = default;
+
+    /// @brief Initialize the Netconf process.
+    ///
+    /// This is invoked by the controller after command line arguments but
+    /// prior to configuration reception. The base class provides this method
+    /// as a place to perform any derivation-specific initialization steps
+    /// that are inappropriate for the constructor but necessary prior to
+    /// launch.
+    virtual void init();
+
+    /// @brief Implements the process's event loop.
+    ///
+    /// @throw DProcessBaseError if an operational error is encountered.
+    virtual void run();
+
+    /// @brief Initiates the process's shutdown process.
+    ///
+    /// This is last step in the shutdown event callback chain, that is
+    /// intended to notify the process it is to begin its shutdown process.
+    ///
+    /// @param args an Element set of shutdown arguments (if any) that are
+    /// supported by the process derivation.
+    ///
+    /// @return an Element that contains the results of argument processing,
+    /// consisting of an integer status value (0 means successful,
+    /// non-zero means failure), and a string explanation of the outcome.
+    ///
+    /// @throw DProcessBaseError if an operational error is encountered.
+    virtual isc::data::ConstElementPtr
+    shutdown(isc::data::ConstElementPtr args);
+
+    /// @brief Processes the given configuration.
+    ///
+    /// This method may be called multiple times during the process lifetime.
+    /// Certainly once during process startup, and possibly later if the user
+    /// alters configuration. This method must not throw, it should catch any
+    /// processing errors and return a success or failure answer as described
+    /// below.
+    ///
+    /// @param config_set a new configuration (JSON) for the process
+    /// @param check_only true if configuration is to be verified only, not applied
+    /// @return an Element that contains the results of configuration composed
+    /// of an integer status value (0 means successful, non-zero means failure),
+    /// and a string explanation of the outcome.
+    virtual isc::data::ConstElementPtr
+    configure(isc::data::ConstElementPtr config_set,
+              bool check_only = false);
+
+    /// @brief Returns a pointer to the configuration manager.
+    NetconfCfgMgrPtr getNetconfCfgMgr();
+
+private:
+
+    /// @brief Polls all ready handlers and then runs one handler if none
+    /// handlers have been executed as a result of polling.
+    ///
+    /// @return Number of executed handlers.
+    size_t runIO();
+
+    /// @brief Netconf agent.
+    NetconfAgent agent_;
+};
+
+/// @brief Defines a shared pointer to NetconfProcess.
+typedef boost::shared_ptr<NetconfProcess> NetconfProcessPtr;
+
+}; // namespace isc::netconf
+}; // namespace isc
+
+#endif // NETCONF_PROCESS_H
diff --git a/src/bin/netconf/parser_context.cc b/src/bin/netconf/parser_context.cc
new file mode 100644
index 0000000..d84e194
--- /dev/null
+++ b/src/bin/netconf/parser_context.cc
@@ -0,0 +1,200 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <netconf/parser_context.h>
+#include <netconf/netconf_parser.h>
+#include <netconf/netconf_log.h>
+#include <exceptions/exceptions.h>
+//#include <cc/dhcp_config_error.h>
+#include <cc/data.h>
+#include <fstream>
+#include <sstream>
+#include <limits>
+
+namespace isc {
+namespace netconf {
+
+ParserContext::ParserContext()
+  : sfile_(0), ctx_(NO_KEYWORDS), trace_scanning_(false), trace_parsing_(false)
+{
+}
+
+ParserContext::~ParserContext()
+{
+}
+
+isc::data::ElementPtr
+ParserContext::parseString(const std::string& str, ParserType parser_type)
+{
+    scanStringBegin(str, parser_type);
+    return (parseCommon());
+}
+
+isc::data::ElementPtr
+ParserContext::parseFile(const std::string& filename, ParserType parser_type) {
+    FILE* f = fopen(filename.c_str(), "r");
+    if (!f) {
+        isc_throw(ParseError, "Unable to open file " << filename);
+    }
+    scanFileBegin(f, filename, parser_type);
+    return (parseCommon());
+}
+
+isc::data::ElementPtr
+ParserContext::parseCommon() {
+    isc::netconf::NetconfParser parser(*this);
+    // Uncomment this to get detailed parser logs.
+    // trace_parsing_ = true;
+    parser.set_debug_level(trace_parsing_);
+    try {
+        int res = parser.parse();
+        if (res != 0) {
+            isc_throw(ParseError, "Parser abort");
+        }
+        scanEnd();
+    }
+    catch (...) {
+        scanEnd();
+        throw;
+    }
+    if (stack_.size() == 1) {
+        return (stack_[0]);
+    } else {
+        isc_throw(ParseError, "Expected exactly one terminal Element expected, found "
+                  << stack_.size());
+    }
+}
+
+void
+ParserContext::error(const isc::netconf::location& loc,
+                     const std::string& what,
+                     size_t pos)
+{
+    if (pos == 0) {
+        isc_throw(ParseError, loc << ": " << what);
+    } else {
+        isc_throw(ParseError, loc << " (near " << pos << "): " << what);
+    }
+}
+
+void
+ParserContext::error(const std::string& what)
+{
+    isc_throw(ParseError, what);
+}
+
+void
+ParserContext::fatal(const std::string& what)
+{
+    isc_throw(ParseError, what);
+}
+
+isc::data::Element::Position
+ParserContext::loc2pos(isc::netconf::location& loc)
+{
+    const std::string& file = *loc.begin.filename;
+    const uint32_t line = loc.begin.line;
+    const uint32_t pos = loc.begin.column;
+    return (isc::data::Element::Position(file, line, pos));
+}
+
+void
+ParserContext::require(const std::string& name,
+                       isc::data::Element::Position open_loc,
+                       isc::data::Element::Position close_loc)
+{
+    ConstElementPtr value = stack_.back()->get(name);
+    if (!value) {
+        isc_throw(ParseError,
+                  "missing parameter '" << name << "' ("
+                  << stack_.back()->getPosition() << ") ["
+                  << contextName() << " map between "
+                  << open_loc << " and " << close_loc << "]");
+    }
+}
+
+void
+ParserContext::unique(const std::string& name,
+                      isc::data::Element::Position loc)
+{
+    ConstElementPtr value = stack_.back()->get(name);
+    if (value) {
+        if (ctx_ != NO_KEYWORDS) {
+            isc_throw(ParseError, loc << ": duplicate " << name
+                      << " entries in " << contextName()
+                      << " map (previous at " << value->getPosition() << ")");
+        } else {
+            isc_throw(ParseError, loc << ": duplicate " << name
+                      << " entries in JSON"
+                      << " map (previous at " << value->getPosition() << ")");
+        }
+    }
+}
+
+void
+ParserContext::enter(const LexerContext& ctx)
+{
+    cstack_.push_back(ctx_);
+    ctx_ = ctx;
+}
+
+void
+ParserContext::leave()
+{
+    if (cstack_.empty()) {
+        fatal("unbalanced syntactic context");
+    }
+    ctx_ = cstack_.back();
+    cstack_.pop_back();
+}
+
+const std::string
+ParserContext::contextName()
+{
+    switch (ctx_) {
+    case NO_KEYWORDS:
+        return ("__no keywords__");
+    case CONFIG:
+        return ("toplevel");
+    case NETCONF:
+        return ("Netconf");
+    case MANAGED_SERVERS:
+        return ("managed-servers");
+    case SERVER:
+        return ("managed-servers entry");
+    case CONTROL_SOCKET:
+        return ("control-socket");
+    case SOCKET_TYPE:
+        return ("socket-type");
+    case HOOKS_LIBRARIES:
+        return ("hooks-libraries");
+    case LOGGERS:
+        return ("loggers");
+    case OUTPUT_OPTIONS:
+        return ("output-options");
+    default:
+        return ("__unknown__");
+    }
+}
+
+void
+ParserContext::warning(const isc::netconf::location& loc,
+                       const std::string& what) {
+    std::ostringstream msg;
+    msg << loc << ": " << what;
+    LOG_WARN(netconf_logger, NETCONF_CONFIG_SYNTAX_WARNING)
+        .arg(msg.str());
+}
+
+void
+ParserContext::warnAboutExtraCommas(const isc::netconf::location& loc) {
+    warning(loc, "Extraneous comma. A piece of configuration may have been omitted.");
+}
+
+}  // namespace netconf
+}  // namespace isc
diff --git a/src/bin/netconf/parser_context.h b/src/bin/netconf/parser_context.h
new file mode 100644
index 0000000..2498f83
--- /dev/null
+++ b/src/bin/netconf/parser_context.h
@@ -0,0 +1,313 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef NETCONF_PARSER_CONTEXT_H
+#define NETCONF_PARSER_CONTEXT_H
+#include <string>
+#include <map>
+#include <vector>
+#include <netconf/netconf_parser.h>
+#include <netconf/parser_context_decl.h>
+#include <cc/dhcp_config_error.h>
+#include <exceptions/exceptions.h>
+
+// Tell Flex the lexer's prototype ...
+#define YY_DECL isc::netconf::NetconfParser::symbol_type netconf_lex (ParserContext& driver)
+
+// ... and declare it for the parser's sake.
+YY_DECL;
+
+namespace isc {
+namespace netconf {
+
+/// @brief Parser context is a wrapper around flex/bison instances dedicated to
+///        Netconf-agent config file parser.
+///
+/// It follows the same principle as other components. The primary interface
+/// are @ref parseString and @ref parseFile methods. All other methods are
+/// public for testing purposes only. This interface allows parsing the
+/// whole configuration with syntactic checking (which is by far the most
+/// frequent use), but it also allows parsing input as generic JSON or
+/// parse only content of the Netconf-agent object, which is a subset
+/// of full grammar (this will be very useful for unit-tests to not duplicate
+/// unnecessary parts of the config file).
+class ParserContext
+{
+public:
+
+    /// @brief Defines currently supported scopes
+    ///
+    /// NetconfParser is able to parse several types of scope. Usually,
+    /// when it parses a config file, it expects the data to have a map
+    /// with Netconf-agent in it and all the parameters within that map.
+    /// However, sometimes the parser is expected to parse only a subset
+    /// of that information.
+    typedef enum {
+        /// This parser will parse the content as generic JSON.
+        PARSER_JSON,
+
+        /// This parser will expect the content as Netconf config wrapped
+        /// in a map (that's the regular config file)
+        PARSER_NETCONF,
+
+        /// This parser will expect only the content of Netconf.
+        PARSER_SUB_NETCONF
+    } ParserType;
+
+    /// @brief Default constructor.
+    ParserContext();
+
+    /// @brief destructor
+    virtual ~ParserContext();
+
+    /// @brief JSON elements being parsed.
+    std::vector<isc::data::ElementPtr> stack_;
+
+    /// @brief Method called before scanning starts on a string.
+    ///
+    /// @param str string to be parsed
+    /// @param type specifies expected content
+    void scanStringBegin(const std::string& str, ParserType type);
+
+    /// @brief Method called before scanning starts on a file.
+    ///
+    /// @param f stdio FILE pointer
+    /// @param filename file to be parsed
+    /// @param type specifies expected content
+    void scanFileBegin(FILE* f, const std::string& filename, ParserType type);
+
+    /// @brief Method called after the last tokens are scanned.
+    void scanEnd();
+
+    /// @brief Divert input to an include file.
+    ///
+    /// @param filename file to be included
+    void includeFile(const std::string& filename);
+
+    /// @brief Run the parser on the string specified.
+    ///
+    /// This method parses specified string. Depending on the value of
+    /// parser_type, parser may either check only that the input is valid
+    /// JSON, or may do more specific syntax checking. See @ref ParserType
+    /// for supported syntax checkers.
+    ///
+    /// @param str string to be parsed
+    /// @param parser_type specifies expected content (usually NETCONF or generic JSON)
+    /// @return Element structure representing parsed text.
+    isc::data::ElementPtr parseString(const std::string& str,
+                                      ParserType parser_type);
+
+    /// @brief Run the parser on the file specified.
+    ///
+    /// This method parses specified file. Depending on the value of
+    /// parser_type, parser may either check only that the input is valid
+    /// JSON, or may do more specific syntax checking. See @ref ParserType
+    /// for supported syntax checkers.
+    ///
+    /// @param filename file to be parsed
+    /// @param parser_type specifies expected content (usually PARSER_NETCONF
+    ///                                                or PARSER_JSON)
+    /// @return Element structure representing parsed text.
+    isc::data::ElementPtr parseFile(const std::string& filename,
+                                    ParserType parser_type);
+
+    /// @brief Error handler
+    ///
+    /// @note The optional position for an error in a string begins by 1
+    /// so the caller should add 1 to the position of the C++ string.
+    ///
+    /// @param loc location within the parsed file where the problem was experienced.
+    /// @param what string explaining the nature of the error.
+    /// @param pos optional position for in string errors.
+    /// @throw ParseError
+    void error(const isc::netconf::location& loc,
+               const std::string& what,
+               size_t pos = 0);
+
+    /// @brief Error handler
+    ///
+    /// This is a simplified error reporting tool for possible future
+    /// cases when the NetconfParser is not able to handle the packet.
+    ///
+    /// @param what string explaining the nature of the error.
+    /// @throw ParseError
+    void error(const std::string& what);
+
+    /// @brief Fatal error handler
+    ///
+    /// This is for should not happen but fatal errors.
+    /// Used by YY_FATAL_ERROR macro so required to be static.
+    ///
+    /// @param what string explaining the nature of the error.
+    /// @throw ParseError
+    static void fatal(const std::string& what);
+
+    /// @brief Converts bison's position to one understandable by isc::data::Element
+    ///
+    /// Convert a bison location into an element position
+    /// (take the begin, the end is lost)
+    ///
+    /// @param loc location in bison format
+    /// @return Position in format accepted by Element
+    isc::data::Element::Position loc2pos(isc::netconf::location& loc);
+
+    /// @brief Check if a required parameter is present
+    ///
+    /// Check if a required parameter is present in the map at the top
+    /// of the stack and raise an error when it is not.
+    ///
+    /// @param name name of the parameter to check
+    /// @param open_loc location of the opening curly bracket
+    /// @param close_loc location of the closing curly bracket
+    /// @throw ParseError
+    void require(const std::string& name,
+                 isc::data::Element::Position open_loc,
+                 isc::data::Element::Position close_loc);
+
+    /// @brief Check if a parameter is already present
+    ///
+    /// Check if a parameter is already present in the map at the top
+    /// of the stack and raise an error when it is.
+    ///
+    /// @param name name of the parameter to check
+    /// @param loc location of the current parameter
+    /// @throw ParseError
+    void unique(const std::string& name,
+                isc::data::Element::Position loc);
+
+    /// @brief Warning handler
+    ///
+    /// @param loc location within the parsed file where the problem was experienced
+    /// @param what string explaining the nature of the error
+    ///
+    /// @throw ParseError
+    void warning(const isc::netconf::location& loc, const std::string& what);
+
+    /// @brief Warning for extra commas
+    ///
+    /// @param loc location within the parsed file of the extra comma
+    ///
+    /// @throw ParseError
+    void warnAboutExtraCommas(const isc::netconf::location& loc);
+
+    /// @brief Defines syntactic contexts for lexical tie-ins
+    typedef enum {
+        ///< This one is used in pure JSON mode.
+        NO_KEYWORDS,
+
+        ///< Used while parsing top level (that contains Netconf)
+        CONFIG,
+
+        ///< Used while parsing content of Netconf.
+        NETCONF,
+
+        /// Used while parsing Netconf/managed-servers.
+        MANAGED_SERVERS,
+
+        ///< Used while parsing Netconf/managed-servers/*.
+        SERVER,
+
+        ///< Used while parsing Netconf/manages-servers/*/control-socket
+        CONTROL_SOCKET,
+
+        ///< Used while parsing Netconf/managed-servers/*/control-socket/socket-type.
+        SOCKET_TYPE,
+
+        ///< Used while parsing Netconf/hooks-libraries.
+        HOOKS_LIBRARIES,
+
+        ///< Used while parsing Netconf/loggers structures.
+        LOGGERS,
+
+        ///< Used while parsing Netconf/loggers/output_options structures.
+        OUTPUT_OPTIONS
+
+    } LexerContext;
+
+    /// @brief File name
+    std::string file_;
+
+    /// @brief File name stack
+    std::vector<std::string> files_;
+
+    /// @brief Location of the current token
+    ///
+    /// The lexer will keep updating it. This variable will be useful
+    /// for logging errors.
+    isc::netconf::location loc_;
+
+    /// @brief Location stack
+    std::vector<isc::netconf::location> locs_;
+
+    /// @brief Lexer state stack
+    std::vector<struct yy_buffer_state*> states_;
+
+    /// @brief sFile (aka FILE)
+    FILE* sfile_;
+
+    /// @brief sFile (aka FILE) stack
+    ///
+    /// This is a stack of files. Typically there's only one file (the
+    /// one being currently parsed), but there may be more if one
+    /// file includes another.
+    std::vector<FILE*> sfiles_;
+
+    /// @brief Current syntactic context
+    LexerContext ctx_;
+
+    /// @brief Enter a new syntactic context
+    ///
+    /// Entering a new syntactic context is useful in several ways.
+    /// First, it allows the parser to avoid conflicts. Second, it
+    /// allows the lexer to return different tokens depending on
+    /// context (e.g. if "renew-timer" string is detected, the lexer
+    /// will return STRING token if in JSON mode or RENEW_TIMER if
+    /// in DHCP6 mode. Finally, the syntactic context allows the
+    /// error message to be more descriptive if the input string
+    /// does not parse properly. Netconf Agent parser uses simplified
+    /// contexts: either it recognizes keywords (value set to KEYWORDS)
+    /// or not (value set to NO_KEYWORDS).
+    ///
+    /// Make sure to call @ref leave() once the parsing of your
+    /// context is complete.
+    ///
+    /// @param ctx the syntactic context to enter into
+    void enter(const LexerContext& ctx);
+
+    /// @brief Leave a syntactic context
+    ///
+    /// @ref enter() must be called before (when entering a new scope
+    /// or context). Once you complete the parsing, this method
+    /// should be called.
+    ///
+    /// @throw isc::Unexpected if unbalanced (more leave() than enter() calls)
+    void leave();
+
+    /// @brief Get the syntactic context name
+    ///
+    /// @return printable name of the context.
+    const std::string contextName();
+
+ private:
+    /// @brief Flag determining scanner debugging.
+    bool trace_scanning_;
+
+    /// @brief Flag determining parser debugging.
+    bool trace_parsing_;
+
+    /// @brief Syntactic context stack
+    std::vector<LexerContext> cstack_;
+
+    /// @brief Common part of parseXXX
+    ///
+    /// @return Element structure representing parsed text.
+    isc::data::ElementPtr parseCommon();
+};
+
+} // end of isc::netconf namespace
+} // end of isc namespace
+
+#endif
diff --git a/src/bin/netconf/parser_context_decl.h b/src/bin/netconf/parser_context_decl.h
new file mode 100644
index 0000000..07c8c7a
--- /dev/null
+++ b/src/bin/netconf/parser_context_decl.h
@@ -0,0 +1,20 @@
+// Copyright (C) 2018 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef NETCONF_CONTEXT_DECL_H
+#define NETCONF_CONTEXT_DECL_H
+
+/// @file netconf/parser_context_decl.h Forward declaration of the ParserContext class
+
+namespace isc {
+namespace netconf {
+
+class ParserContext;
+
+}; // end of isc::dhcp namespace
+}; // end of isc namespace
+
+#endif
diff --git a/src/bin/netconf/simple_parser.cc b/src/bin/netconf/simple_parser.cc
new file mode 100644
index 0000000..1574ddf
--- /dev/null
+++ b/src/bin/netconf/simple_parser.cc
@@ -0,0 +1,194 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <netconf/simple_parser.h>
+#include <netconf/netconf_config.h>
+#include <cc/data.h>
+#include <cc/dhcp_config_error.h>
+#include <hooks/hooks_manager.h>
+#include <hooks/hooks_parser.h>
+#include <boost/foreach.hpp>
+
+using namespace isc::data;
+
+namespace isc {
+namespace netconf {
+/// @brief This sets of arrays define the default values in various scopes
+///        of the Netconf Configuration.
+///
+/// Each of those is documented in @file netconf/simple_parser.cc. This
+/// is different than most other comments in Kea code. The reason
+/// for placing those in .cc rather than .h file is that it
+/// is expected to be one centralized place to look at for
+/// the default values. This is expected to be looked at also by
+/// people who are not skilled in C or C++, so they may be
+/// confused with the differences between declaration and definition.
+/// As such, there's one file to look at that hopefully is readable
+/// without any C or C++ skills.
+///
+/// @{
+
+/// @brief This table defines default values for global options.
+///
+/// These are global Netconf parameters.
+const SimpleDefaults NetconfSimpleParser::NETCONF_DEFAULTS = {
+    { "boot-update",       Element::boolean, "true" },
+    { "subscribe-changes", Element::boolean, "true" },
+    { "validate-changes",  Element::boolean, "true" }
+};
+
+/// @brief Supplies defaults for control-socket elements
+const SimpleDefaults NetconfSimpleParser::CTRL_SOCK_DEFAULTS = {
+    { "socket-type", Element::string, "stdout" },
+    { "socket-name", Element::string, "" },
+    { "socket-url" , Element::string, "http://127.0.0.1:8000/" }
+};
+
+/// @brief Supplies defaults for dhcp4 managed server
+const SimpleDefaults NetconfSimpleParser::DHCP4_DEFAULTS = {
+    { "model", Element::string, "kea-dhcp4-server" }
+};
+
+/// @brief Supplies defaults for dhcp6 managed server
+const SimpleDefaults NetconfSimpleParser::DHCP6_DEFAULTS = {
+    { "model", Element::string, "kea-dhcp6-server" }
+};
+
+/// @brief Supplies defaults for d2 managed server
+const SimpleDefaults NetconfSimpleParser::D2_DEFAULTS = {
+    { "model", Element::string, "kea-dhcp-ddns" }
+};
+
+/// @brief Supplies defaults for ca managed server
+const SimpleDefaults NetconfSimpleParser::CA_DEFAULTS = {
+    { "model", Element::string, "kea-ctrl-agent" }
+};
+
+/// @brief List of parameters that can be inherited to managed-servers scope.
+///
+/// Some parameters may be defined on both global (directly in Netconf) and
+/// servers (Netconf/managed-servers/...) scope. If not defined in the
+/// managed-servers scope, the value is being inherited (derived) from
+/// the global scope. This array lists all of such parameters.
+const ParamsList NetconfSimpleParser::INHERIT_TO_SERVERS = {
+    "boot-update",
+    "subscribe-changes",
+    "validate-changes"
+};
+
+/// @}
+
+/// ---------------------------------------------------------------------------
+/// --- end of default values -------------------------------------------------
+/// ---------------------------------------------------------------------------
+
+size_t NetconfSimpleParser::setAllDefaults(const ElementPtr& global) {
+    size_t cnt = 0;
+
+    // Set global defaults first.
+    cnt = setDefaults(global, NETCONF_DEFAULTS);
+
+    ConstElementPtr servers = global->get("managed-servers");
+    if (servers) {
+        for (auto it : servers->mapValue()) {
+            cnt += setServerDefaults(it.first, it.second);
+        }
+    }
+
+    return (cnt);
+}
+
+size_t NetconfSimpleParser::deriveParameters(ConstElementPtr global) {
+    size_t cnt = 0;
+
+    // Now derive global parameters into managed-servers.
+    ConstElementPtr servers = global->get("managed-servers");
+    if (servers) {
+        for (auto it : servers->mapValue()) {
+            ElementPtr mutable_server =
+                boost::const_pointer_cast<Element>(it.second);
+            cnt += SimpleParser::deriveParams(global,
+                                              mutable_server,
+                                              INHERIT_TO_SERVERS);
+        }
+    }
+
+    return (cnt);
+}
+
+size_t
+NetconfSimpleParser::setServerDefaults(const std::string name,
+                                       ConstElementPtr server) {
+    size_t cnt = 0;
+
+    ElementPtr mutable_server =
+        boost::const_pointer_cast<Element>(server);
+    if (name == "dhcp4") {
+        cnt += setDefaults(mutable_server, DHCP4_DEFAULTS);
+    } else if (name == "dhcp6") {
+        cnt += setDefaults(mutable_server, DHCP6_DEFAULTS);
+    } else if (name == "d2") {
+        cnt += setDefaults(mutable_server, D2_DEFAULTS);
+    } else if (name == "ca") {
+        cnt += setDefaults(mutable_server, CA_DEFAULTS);
+    }
+
+    ConstElementPtr ctrl_sock = server->get("control-socket");
+    if (!ctrl_sock) {
+        return (cnt);
+    }
+    ElementPtr mutable_ctrl_sock =
+        boost::const_pointer_cast<Element>(ctrl_sock);
+    cnt += setDefaults(mutable_ctrl_sock, CTRL_SOCK_DEFAULTS);
+
+    return (cnt);
+}
+
+void
+NetconfSimpleParser::parse(const NetconfConfigPtr& ctx,
+                           const ConstElementPtr& config,
+                           bool check_only) {
+
+    // User context can be done at anytime.
+    ConstElementPtr user_context = config->get("user-context");
+    if (user_context) {
+        ctx->setContext(user_context);
+    }
+
+    // get managed servers.
+    ConstElementPtr servers = config->get("managed-servers");
+    if (servers) {
+        for (auto it : servers->mapValue()) {
+            ServerConfigParser server_parser;
+            CfgServerPtr server = server_parser.parse(it.second);
+            ctx->getCfgServersMap()->insert(make_pair(it.first, server));
+        }
+    }
+
+    // Finally, let's get the hook libs!
+    using namespace isc::hooks;
+    HooksConfig& libraries = ctx->getHooksConfig();
+    ConstElementPtr hooks = config->get("hooks-libraries");
+    if (hooks) {
+        HooksLibrariesParser hooks_parser;
+        hooks_parser.parse(libraries, hooks);
+        libraries.verifyLibraries(hooks->getPosition());
+    }
+
+    if (!check_only) {
+        // This occurs last as if it succeeds, there is no easy way
+        // revert it.  As a result, the failure to commit a subsequent
+        // change causes problems when trying to roll back.
+        HooksManager::prepareUnloadLibraries();
+        static_cast<void>(HooksManager::unloadLibraries());
+        libraries.loadLibraries();
+    }
+}
+
+}  // namespace netconf
+}  // namespace isc
diff --git a/src/bin/netconf/simple_parser.h b/src/bin/netconf/simple_parser.h
new file mode 100644
index 0000000..5c9324d
--- /dev/null
+++ b/src/bin/netconf/simple_parser.h
@@ -0,0 +1,74 @@
+// Copyright (C) 2018 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef NETCONF_SIMPLE_PARSER_H
+#define NETCONF_SIMPLE_PARSER_H
+
+#include <cc/simple_parser.h>
+#include <netconf/netconf_cfg_mgr.h>
+
+namespace isc {
+namespace netconf {
+
+/// @brief SimpleParser specialized for Netconf
+///
+/// This class is a @ref isc::data::SimpleParser dedicated to Netconf.
+/// In particular, it contains all the default values for the whole
+/// netconf defaults.
+///
+/// For the actual values, see @file netconf/simple_parser.cc
+class NetconfSimpleParser : public isc::data::SimpleParser {
+public:
+    /// @brief Sets all defaults for Netconf configuration
+    ///
+    /// This method sets global, option data and option definitions defaults.
+    ///
+    /// @param global scope to be filled in with defaults.
+    /// @return number of default values added
+    static size_t setAllDefaults(const isc::data::ElementPtr& global);
+
+    /// @brief Derives (inherits) all parameters from global to more specific scopes.
+    ///
+    /// This method currently does the following:
+    /// - derives global parameters to managed servers (flags for now)
+    /// @param global scope to be modified if needed
+    /// @return number of default values derived
+    static size_t deriveParameters(isc::data::ConstElementPtr global);
+
+    /// @brief Adds default values to a Managed server entry.
+    ///
+    /// Adds server specific defaults, e.g. the default model.
+    ///
+    /// @param name server name / entry key
+    /// @param server server element / entry value
+    /// @return returns the number of default values added
+    static size_t setServerDefaults(const std::string name,
+                                    isc::data::ConstElementPtr server);
+
+    /// @brief Parses the netconf configuration
+    ///
+    /// @param ctx - parsed information will be stored here
+    /// @param config - Element tree structure that holds configuration
+    /// @param check_only - if true the configuration is verified only, not applied
+    ///
+    /// @throw ConfigError if any issues are encountered.
+    void parse(const NetconfConfigPtr& ctx,
+               const isc::data::ConstElementPtr& config,
+               bool check_only);
+
+    // see simple_parser.cc for comments for those parameters
+    static const isc::data::SimpleDefaults NETCONF_DEFAULTS;
+    static const isc::data::SimpleDefaults CTRL_SOCK_DEFAULTS;
+    static const isc::data::SimpleDefaults DHCP4_DEFAULTS;
+    static const isc::data::SimpleDefaults DHCP6_DEFAULTS;
+    static const isc::data::SimpleDefaults D2_DEFAULTS;
+    static const isc::data::SimpleDefaults CA_DEFAULTS;
+    static const isc::data::ParamsList INHERIT_TO_SERVERS;
+};
+
+};
+};
+#endif
diff --git a/src/bin/netconf/stdout_control_socket.cc b/src/bin/netconf/stdout_control_socket.cc
new file mode 100644
index 0000000..8dc925b
--- /dev/null
+++ b/src/bin/netconf/stdout_control_socket.cc
@@ -0,0 +1,56 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file stdout_control_socket.cc
+/// Contains the stdout derived class for control socket communication.
+
+#include <config.h>
+
+#include <netconf/stdout_control_socket.h>
+#include <cc/command_interpreter.h>
+
+using namespace std;
+using namespace isc::config;
+using namespace isc::data;
+
+namespace isc {
+namespace netconf {
+
+template <> ControlSocketBasePtr
+createControlSocket<CfgControlSocket::Type::STDOUT>(CfgControlSocketPtr ctrl_sock) {
+    return (StdoutControlSocketPtr(new StdoutControlSocket(ctrl_sock)));
+}
+
+StdoutControlSocket::StdoutControlSocket(CfgControlSocketPtr ctrl_sock)
+    : ControlSocketBase(ctrl_sock), output_(cout) {
+}
+
+StdoutControlSocket::StdoutControlSocket(CfgControlSocketPtr ctrl_sock,
+                                         ostream& output)
+    : ControlSocketBase(ctrl_sock), output_(output) {
+}
+
+ConstElementPtr
+StdoutControlSocket::configGet(const string& /*service*/) {
+    isc_throw(NotImplemented, "No config-get for stdout control socket");
+}
+
+ConstElementPtr
+StdoutControlSocket::configTest(ConstElementPtr /*config*/,
+                                const string& /*service*/) {
+    return (createAnswer());
+}
+
+ConstElementPtr
+StdoutControlSocket::configSet(ConstElementPtr config,
+                               const string& /*service*/) {
+    prettyPrint(config, output_);
+    output_ << endl;
+    return (createAnswer());
+}
+
+} // namespace netconf
+} // namespace isc
diff --git a/src/bin/netconf/stdout_control_socket.h b/src/bin/netconf/stdout_control_socket.h
new file mode 100644
index 0000000..4bbd82f
--- /dev/null
+++ b/src/bin/netconf/stdout_control_socket.h
@@ -0,0 +1,90 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file stdout_control_socket.h
+/// Contains declarations for stdout control socket communication.
+
+#ifndef STDOUT_CONTROL_SOCKET_H
+#define STDOUT_CONTROL_SOCKET_H
+
+#include <netconf/control_socket.h>
+#include <iostream>
+
+namespace isc {
+namespace netconf {
+
+/// @brief Class for control socket communication over stdout.
+///
+/// This class is the derived class for control socket communication
+/// over stdout.
+/// This class implements config-test (always OK) and config-set.
+class StdoutControlSocket : public ControlSocketBase {
+public:
+
+    /// @brief Constructor.
+    ///
+    /// Use std::cout.
+    ///
+    /// @param ctrl_sock The control socket configuration.
+    StdoutControlSocket(CfgControlSocketPtr ctrl_sock);
+
+    /// @brief Destructor (does nothing).
+    virtual ~StdoutControlSocket() = default;
+
+    /// @brief Get configuration.
+    ///
+    /// Call config-get over the control socket.
+    ///
+    /// @param service The target service (ignored).
+    /// @return The JSON element answer of config-get.
+    /// @throw NotImplemented
+    virtual data::ConstElementPtr configGet(const std::string& service);
+
+    /// @brief Test configuration.
+    ///
+    /// Call config-test over the control socket.
+    ///
+    /// @param config The configuration to test (ignored).
+    /// @param service The target service (ignored).
+    /// @return The JSON element answer of config-test (fixed answer).
+    virtual data::ConstElementPtr configTest(data::ConstElementPtr config,
+                                             const std::string& service);
+
+    /// @brief Set configuration.
+    ///
+    /// Call config-set over the control socket.
+    ///
+    /// @param config The configuration to set.
+    /// @param service The target service.
+    /// @return The JSON element answer of config-set (fixed answer).
+    virtual data::ConstElementPtr configSet(data::ConstElementPtr config,
+                                            const std::string& service);
+
+protected:
+    /// @brief Alternative constructor for tests.
+    ///
+    /// @param ctrl_sock The control socket configuration.
+    /// @param output The output stream.
+    StdoutControlSocket(CfgControlSocketPtr ctrl_sock, std::ostream& output);
+
+    /// @brief The output stream (std::cout outside tests).
+    std::ostream& output_;
+};
+
+/// @brief Type definition for the pointer to the @c StdoutControlSocket.
+typedef boost::shared_ptr<StdoutControlSocket> StdoutControlSocketPtr;
+
+/// @brief Factory template specialization for stdout control sockets.
+///
+/// @param ctrl_sock The control socket configuration.
+/// @return A pointer to a stdout control socket communication object.
+template <> ControlSocketBasePtr
+createControlSocket<CfgControlSocket::Type::STDOUT>(CfgControlSocketPtr ctrl_sock);
+
+} // namespace netconf
+} // namespace isc
+
+#endif // STDOUT_CONTROL_SOCKET_H
diff --git a/src/bin/netconf/tests/Makefile.am b/src/bin/netconf/tests/Makefile.am
new file mode 100644
index 0000000..e25e62a
--- /dev/null
+++ b/src/bin/netconf/tests/Makefile.am
@@ -0,0 +1,91 @@
+SUBDIRS = . shtests
+
+EXTRA_DIST = testdata/get_config.json
+
+AM_CPPFLAGS = -I$(top_srcdir)/src/lib -I$(top_builddir)/src/lib
+AM_CPPFLAGS += -I$(top_srcdir)/src -I$(top_builddir)/src
+AM_CPPFLAGS += -I$(top_srcdir)/src/bin -I$(top_builddir)/src/bin
+AM_CPPFLAGS += -DTEST_DATA_BUILDDIR=\"$(abs_top_builddir)/src/bin/netconf/tests\"
+AM_CPPFLAGS += -DCFG_EXAMPLES=\"$(abs_top_srcdir)/doc/examples/netconf\"
+AM_CPPFLAGS += -DTEST_DATA_BUILDDIR=\"$(abs_top_builddir)/src/bin/netconf/tests\"
+AM_CPPFLAGS += -DSYNTAX_FILE=\"$(abs_srcdir)/../netconf_parser.yy\"
+AM_CPPFLAGS += $(BOOST_INCLUDES) $(CRYPTO_CFLAGS) $(CRYPTO_INCLUDES)
+AM_CPPFLAGS += $(SYSREPO_CPPFLAGS)
+AM_CPPFLAGS += $(SYSREPO_INCLUDEDIR)
+
+CLEANFILES = *.json *.log
+
+DISTCLEANFILES = test_data_files_config.h test_libraries.h
+
+AM_CXXFLAGS = $(KEA_CXXFLAGS)
+
+if USE_STATIC_LINK
+AM_LDFLAGS = -static
+endif
+
+TESTS_ENVIRONMENT = \
+        $(LIBTOOL) --mode=execute $(VALGRIND_COMMAND)
+
+TESTS =
+if HAVE_GTEST
+
+noinst_LTLIBRARIES = libbasic.la
+
+TESTS += netconf_unittests
+
+netconf_unittests_SOURCES  = control_socket_unittests.cc
+netconf_unittests_SOURCES += get_config_unittest.cc
+netconf_unittests_SOURCES += netconf_cfg_mgr_unittests.cc
+netconf_unittests_SOURCES += netconf_controller_unittests.cc
+netconf_unittests_SOURCES += netconf_process_unittests.cc
+netconf_unittests_SOURCES += netconf_unittests.cc
+netconf_unittests_SOURCES += parser_unittests.cc
+netconf_unittests_SOURCES += run_unittests.cc
+
+netconf_unittests_CPPFLAGS = $(AM_CPPFLAGS) $(GTEST_INCLUDES)
+netconf_unittests_LDFLAGS = $(AM_LDFLAGS) $(CRYPTO_LDFLAGS)
+
+
+netconf_unittests_LDADD = $(top_builddir)/src/bin/netconf/libnetconf.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/process/testutils/libprocesstest.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/process/libkea-process.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/cfgrpt/libcfgrpt.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/dhcpsrv/libkea-dhcpsrv.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/dhcpsrv/testutils/libdhcpsrvtest.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/eval/libkea-eval.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/dhcp_ddns/libkea-dhcp_ddns.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/yang/testutils/libyangtest.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/yang/libkea-yang.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/stats/libkea-stats.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/config/libkea-cfgclient.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/http/libkea-http.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/dhcp/tests/libdhcptest.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/dhcp/libkea-dhcp++.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/hooks/libkea-hooks.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/testutils/libkea-testutils.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/cc/libkea-cc.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/asiolink/libkea-asiolink.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/dns/libkea-dns++.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/cryptolink/libkea-cryptolink.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/log/libkea-log.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/util/unittests/libutil_unittests.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/util/libkea-util.la
+netconf_unittests_LDADD += $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
+netconf_unittests_LDADD += $(LOG4CPLUS_LIBS) $(CRYPTO_LIBS)
+netconf_unittests_LDADD += $(BOOST_LIBS) $(GTEST_LDADD) $(SYSREPO_LIBS)
+
+# The basic callout library - contains standard callouts
+libbasic_la_SOURCES  = basic_library.cc
+libbasic_la_CXXFLAGS = $(AM_CXXFLAGS)
+libbasic_la_CPPFLAGS = $(AM_CPPFLAGS)
+libbasic_la_LIBADD   = $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
+libbasic_la_LIBADD  += $(top_builddir)/src/lib/hooks/libkea-hooks.la
+libbasic_la_LIBADD  += $(top_builddir)/src/lib/log/libkea-log.la
+libbasic_la_LDFLAGS  = -avoid-version -export-dynamic -module -rpath /nowhere
+
+nodist_netconf_unittests_SOURCES = test_data_files_config.h test_libraries.h
+endif
+
+noinst_EXTRA_DIST = configs-list.txt
+
+noinst_PROGRAMS = $(TESTS)
diff --git a/src/bin/netconf/tests/Makefile.in b/src/bin/netconf/tests/Makefile.in
new file mode 100644
index 0000000..e2b84ae
--- /dev/null
+++ b/src/bin/netconf/tests/Makefile.in
@@ -0,0 +1,1224 @@
+# Makefile.in generated by automake 1.16.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2018 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
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+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
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+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
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+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
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+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
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+        $(LIBTOOL) --mode=execute $(VALGRIND_COMMAND)
+
+@HAVE_GTEST_TRUE@noinst_LTLIBRARIES = libbasic.la
+@HAVE_GTEST_TRUE@netconf_unittests_SOURCES =  \
+@HAVE_GTEST_TRUE@	control_socket_unittests.cc \
+@HAVE_GTEST_TRUE@	get_config_unittest.cc \
+@HAVE_GTEST_TRUE@	netconf_cfg_mgr_unittests.cc \
+@HAVE_GTEST_TRUE@	netconf_controller_unittests.cc \
+@HAVE_GTEST_TRUE@	netconf_process_unittests.cc \
+@HAVE_GTEST_TRUE@	netconf_unittests.cc parser_unittests.cc \
+@HAVE_GTEST_TRUE@	run_unittests.cc
+@HAVE_GTEST_TRUE@netconf_unittests_CPPFLAGS = $(AM_CPPFLAGS) $(GTEST_INCLUDES)
+@HAVE_GTEST_TRUE@netconf_unittests_LDFLAGS = $(AM_LDFLAGS) $(CRYPTO_LDFLAGS)
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/dhcpsrv/libkea-dhcpsrv.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/dhcpsrv/testutils/libdhcpsrvtest.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/eval/libkea-eval.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/dhcp_ddns/libkea-dhcp_ddns.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/stats/libkea-stats.la
+#netconf_unittests_LDADD += $(top_builddir)/src/lib/dhcp/tests/libdhcptest.la
+@HAVE_GTEST_TRUE@netconf_unittests_LDADD = $(top_builddir)/src/bin/netconf/libnetconf.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/process/testutils/libprocesstest.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/process/libkea-process.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/cfgrpt/libcfgrpt.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/yang/testutils/libyangtest.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/yang/libkea-yang.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/config/libkea-cfgclient.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/http/libkea-http.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/dhcp/libkea-dhcp++.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/hooks/libkea-hooks.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/testutils/libkea-testutils.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/cc/libkea-cc.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/asiolink/libkea-asiolink.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/dns/libkea-dns++.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/cryptolink/libkea-cryptolink.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/log/libkea-log.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/util/unittests/libutil_unittests.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/util/libkea-util.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/exceptions/libkea-exceptions.la \
+@HAVE_GTEST_TRUE@	$(LOG4CPLUS_LIBS) $(CRYPTO_LIBS) \
+@HAVE_GTEST_TRUE@	$(BOOST_LIBS) $(GTEST_LDADD) $(SYSREPO_LIBS)
+
+# The basic callout library - contains standard callouts
+@HAVE_GTEST_TRUE@libbasic_la_SOURCES = basic_library.cc
+@HAVE_GTEST_TRUE@libbasic_la_CXXFLAGS = $(AM_CXXFLAGS)
+@HAVE_GTEST_TRUE@libbasic_la_CPPFLAGS = $(AM_CPPFLAGS)
+@HAVE_GTEST_TRUE@libbasic_la_LIBADD = $(top_builddir)/src/lib/exceptions/libkea-exceptions.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/hooks/libkea-hooks.la \
+@HAVE_GTEST_TRUE@	$(top_builddir)/src/lib/log/libkea-log.la
+@HAVE_GTEST_TRUE@libbasic_la_LDFLAGS = -avoid-version -export-dynamic -module -rpath /nowhere
+@HAVE_GTEST_TRUE@nodist_netconf_unittests_SOURCES = test_data_files_config.h test_libraries.h
+noinst_EXTRA_DIST = configs-list.txt
+all: all-recursive
+
+.SUFFIXES:
+.SUFFIXES: .cc .lo .o .obj
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign src/bin/netconf/tests/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign src/bin/netconf/tests/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+test_data_files_config.h: $(top_builddir)/config.status $(srcdir)/test_data_files_config.h.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+test_libraries.h: $(top_builddir)/config.status $(srcdir)/test_libraries.h.in
+	cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
+
+clean-noinstPROGRAMS:
+	@list='$(noinst_PROGRAMS)'; test -n "$$list" || exit 0; \
+	echo " rm -f" $$list; \
+	rm -f $$list || exit $$?; \
+	test -n "$(EXEEXT)" || exit 0; \
+	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
+	echo " rm -f" $$list; \
+	rm -f $$list
+
+clean-noinstLTLIBRARIES:
+	-test -z "$(noinst_LTLIBRARIES)" || rm -f $(noinst_LTLIBRARIES)
+	@list='$(noinst_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+libbasic.la: $(libbasic_la_OBJECTS) $(libbasic_la_DEPENDENCIES) $(EXTRA_libbasic_la_DEPENDENCIES) 
+	$(AM_V_CXXLD)$(libbasic_la_LINK) $(am_libbasic_la_rpath) $(libbasic_la_OBJECTS) $(libbasic_la_LIBADD) $(LIBS)
+
+netconf_unittests$(EXEEXT): $(netconf_unittests_OBJECTS) $(netconf_unittests_DEPENDENCIES) $(EXTRA_netconf_unittests_DEPENDENCIES) 
+	@rm -f netconf_unittests$(EXEEXT)
+	$(AM_V_CXXLD)$(netconf_unittests_LINK) $(netconf_unittests_OBJECTS) $(netconf_unittests_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libbasic_la-basic_library.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_unittests-control_socket_unittests.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_unittests-get_config_unittest.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_unittests-netconf_cfg_mgr_unittests.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_unittests-netconf_controller_unittests.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_unittests-netconf_process_unittests.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_unittests-netconf_unittests.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_unittests-parser_unittests.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/netconf_unittests-run_unittests.Po@am__quote@ # am--include-marker
+
+$(am__depfiles_remade):
+	@$(MKDIR_P) $(@D)
+	@echo '# dummy' >$@-t && $(am__mv) $@-t $@
+
+am--depfiles: $(am__depfiles_remade)
+
+.cc.o:
+@am__fastdepCXX_TRUE@	$(AM_V_CXX)$(CXXCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCXX_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(CXXCOMPILE) -c -o $@ $<
+
+.cc.obj:
+@am__fastdepCXX_TRUE@	$(AM_V_CXX)$(CXXCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
+@am__fastdepCXX_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(CXXCOMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+.cc.lo:
+@am__fastdepCXX_TRUE@	$(AM_V_CXX)$(LTCXXCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCXX_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(LTCXXCOMPILE) -c -o $@ $<
+
+libbasic_la-basic_library.lo: basic_library.cc
+@am__fastdepCXX_TRUE@	$(AM_V_CXX)$(LIBTOOL) $(AM_V_lt) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libbasic_la_CPPFLAGS) $(CPPFLAGS) $(libbasic_la_CXXFLAGS) $(CXXFLAGS) -MT libbasic_la-basic_library.lo -MD -MP -MF $(DEPDIR)/libbasic_la-basic_library.Tpo -c -o libbasic_la-basic_library.lo `test -f 'basic_library.cc' || echo '$(srcdir)/'`basic_library.cc
+@am__fastdepCXX_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libbasic_la-basic_library.Tpo $(DEPDIR)/libbasic_la-basic_library.Plo
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='basic_library.cc' object='libbasic_la-basic_library.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libbasic_la_CPPFLAGS) $(CPPFLAGS) $(libbasic_la_CXXFLAGS) $(CXXFLAGS) -c -o libbasic_la-basic_library.lo `test -f 'basic_library.cc' || echo '$(srcdir)/'`basic_library.cc
+
+netconf_unittests-control_socket_unittests.o: control_socket_unittests.cc
+@am__fastdepCXX_TRUE@	$(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT netconf_unittests-control_socket_unittests.o -MD -MP -MF $(DEPDIR)/netconf_unittests-control_socket_unittests.Tpo -c -o netconf_unittests-control_socket_unittests.o `test -f 'control_socket_unittests.cc' || echo '$(srcdir)/'`control_socket_unittests.cc
+@am__fastdepCXX_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/netconf_unittests-control_socket_unittests.Tpo $(DEPDIR)/netconf_unittests-control_socket_unittests.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='control_socket_unittests.cc' object='netconf_unittests-control_socket_unittests.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o netconf_unittests-control_socket_unittests.o `test -f 'control_socket_unittests.cc' || echo '$(srcdir)/'`control_socket_unittests.cc
+
+netconf_unittests-control_socket_unittests.obj: control_socket_unittests.cc
+@am__fastdepCXX_TRUE@	$(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT netconf_unittests-control_socket_unittests.obj -MD -MP -MF $(DEPDIR)/netconf_unittests-control_socket_unittests.Tpo -c -o netconf_unittests-control_socket_unittests.obj `if test -f 'control_socket_unittests.cc'; then $(CYGPATH_W) 'control_socket_unittests.cc'; else $(CYGPATH_W) '$(srcdir)/control_socket_unittests.cc'; fi`
+@am__fastdepCXX_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/netconf_unittests-control_socket_unittests.Tpo $(DEPDIR)/netconf_unittests-control_socket_unittests.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='control_socket_unittests.cc' object='netconf_unittests-control_socket_unittests.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o netconf_unittests-control_socket_unittests.obj `if test -f 'control_socket_unittests.cc'; then $(CYGPATH_W) 'control_socket_unittests.cc'; else $(CYGPATH_W) '$(srcdir)/control_socket_unittests.cc'; fi`
+
+netconf_unittests-get_config_unittest.o: get_config_unittest.cc
+@am__fastdepCXX_TRUE@	$(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT netconf_unittests-get_config_unittest.o -MD -MP -MF $(DEPDIR)/netconf_unittests-get_config_unittest.Tpo -c -o netconf_unittests-get_config_unittest.o `test -f 'get_config_unittest.cc' || echo '$(srcdir)/'`get_config_unittest.cc
+@am__fastdepCXX_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/netconf_unittests-get_config_unittest.Tpo $(DEPDIR)/netconf_unittests-get_config_unittest.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='get_config_unittest.cc' object='netconf_unittests-get_config_unittest.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o netconf_unittests-get_config_unittest.o `test -f 'get_config_unittest.cc' || echo '$(srcdir)/'`get_config_unittest.cc
+
+netconf_unittests-get_config_unittest.obj: get_config_unittest.cc
+@am__fastdepCXX_TRUE@	$(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT netconf_unittests-get_config_unittest.obj -MD -MP -MF $(DEPDIR)/netconf_unittests-get_config_unittest.Tpo -c -o netconf_unittests-get_config_unittest.obj `if test -f 'get_config_unittest.cc'; then $(CYGPATH_W) 'get_config_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/get_config_unittest.cc'; fi`
+@am__fastdepCXX_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/netconf_unittests-get_config_unittest.Tpo $(DEPDIR)/netconf_unittests-get_config_unittest.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='get_config_unittest.cc' object='netconf_unittests-get_config_unittest.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o netconf_unittests-get_config_unittest.obj `if test -f 'get_config_unittest.cc'; then $(CYGPATH_W) 'get_config_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/get_config_unittest.cc'; fi`
+
+netconf_unittests-netconf_cfg_mgr_unittests.o: netconf_cfg_mgr_unittests.cc
+@am__fastdepCXX_TRUE@	$(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT netconf_unittests-netconf_cfg_mgr_unittests.o -MD -MP -MF $(DEPDIR)/netconf_unittests-netconf_cfg_mgr_unittests.Tpo -c -o netconf_unittests-netconf_cfg_mgr_unittests.o `test -f 'netconf_cfg_mgr_unittests.cc' || echo '$(srcdir)/'`netconf_cfg_mgr_unittests.cc
+@am__fastdepCXX_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/netconf_unittests-netconf_cfg_mgr_unittests.Tpo $(DEPDIR)/netconf_unittests-netconf_cfg_mgr_unittests.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='netconf_cfg_mgr_unittests.cc' object='netconf_unittests-netconf_cfg_mgr_unittests.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o netconf_unittests-netconf_cfg_mgr_unittests.o `test -f 'netconf_cfg_mgr_unittests.cc' || echo '$(srcdir)/'`netconf_cfg_mgr_unittests.cc
+
+netconf_unittests-netconf_cfg_mgr_unittests.obj: netconf_cfg_mgr_unittests.cc
+@am__fastdepCXX_TRUE@	$(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT netconf_unittests-netconf_cfg_mgr_unittests.obj -MD -MP -MF $(DEPDIR)/netconf_unittests-netconf_cfg_mgr_unittests.Tpo -c -o netconf_unittests-netconf_cfg_mgr_unittests.obj `if test -f 'netconf_cfg_mgr_unittests.cc'; then $(CYGPATH_W) 'netconf_cfg_mgr_unittests.cc'; else $(CYGPATH_W) '$(srcdir)/netconf_cfg_mgr_unittests.cc'; fi`
+@am__fastdepCXX_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/netconf_unittests-netconf_cfg_mgr_unittests.Tpo $(DEPDIR)/netconf_unittests-netconf_cfg_mgr_unittests.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	$(AM_V_CXX)source='netconf_cfg_mgr_unittests.cc' object='netconf_unittests-netconf_cfg_mgr_unittests.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(netconf_unittests_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o netconf_unittests-netconf_cfg_mgr_unittests.obj `if test -f 'netconf_cfg_mgr_unittests.cc'; then $(CYGPATH_W) 'netconf_cfg_mgr_unittests.cc'; else $(CYGPATH_W) '$(srcdir)/netconf_cfg_mgr_unittests.cc'; fi`
+
+netconf_unittests-netconf_controller_unittests.o: netconf_controller_unittests.cc
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+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
+	      || $(MKDIR_P) "$(distdir)/$$subdir" \
+	      || exit 1; \
+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+	$(MAKE) $(AM_MAKEFLAGS) check-TESTS
+check: check-recursive
+all-am: Makefile $(PROGRAMS) $(LTLIBRARIES)
+installdirs: installdirs-recursive
+installdirs-am:
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+	-test -z "$(DISTCLEANFILES)" || rm -f $(DISTCLEANFILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-recursive
+
+clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
+	clean-noinstPROGRAMS mostlyclean-am
+
+distclean: distclean-recursive
+		-rm -f ./$(DEPDIR)/libbasic_la-basic_library.Plo
+	-rm -f ./$(DEPDIR)/netconf_unittests-control_socket_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-get_config_unittest.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-netconf_cfg_mgr_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-netconf_controller_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-netconf_process_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-netconf_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-parser_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-run_unittests.Po
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info: info-recursive
+
+info-am:
+
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+
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+
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+
+install-ps: install-ps-recursive
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+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+		-rm -f ./$(DEPDIR)/libbasic_la-basic_library.Plo
+	-rm -f ./$(DEPDIR)/netconf_unittests-control_socket_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-get_config_unittest.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-netconf_cfg_mgr_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-netconf_controller_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-netconf_process_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-netconf_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-parser_unittests.Po
+	-rm -f ./$(DEPDIR)/netconf_unittests-run_unittests.Po
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(am__recursive_targets) check-am install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am \
+	am--depfiles check check-TESTS check-am clean clean-generic \
+	clean-libtool clean-noinstLTLIBRARIES clean-noinstPROGRAMS \
+	cscopelist-am ctags ctags-am distclean distclean-compile \
+	distclean-generic distclean-libtool distclean-tags distdir dvi \
+	dvi-am html html-am info info-am install install-am \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs installdirs-am \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/bin/netconf/tests/basic_library.cc b/src/bin/netconf/tests/basic_library.cc
new file mode 100644
index 0000000..f2186e0
--- /dev/null
+++ b/src/bin/netconf/tests/basic_library.cc
@@ -0,0 +1,72 @@
+// Copyright (C) 2018 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file
+/// @brief Basic callout library
+///
+/// This is source of a test library for Control Agent.
+///
+/// - Only the "version" framework function is supplied.
+///
+/// - hookpt_one callout is supplied.
+
+#include <config.h>
+#include <hooks/hooks.h>
+
+using namespace isc::hooks;
+using namespace std;
+
+namespace {
+
+extern "C" {
+
+// Callouts.  All return their result through the "result" argument.
+
+int
+context_create(CalloutHandle& handle) {
+    handle.setContext("result", static_cast<int>(10));
+    handle.setArgument("result", static_cast<int>(10));
+    return (0);
+}
+
+// First callout adds the passed "integer" argument to the initialized context
+// value of 10. (Note that the value set by context_create is accessed through
+// context and not the argument, so checking that context is correctly passed
+// between callouts in the same library.)
+
+int
+hookpt_one(CalloutHandle& handle) {
+    int data;
+    handle.getArgument("integer", data);
+
+    int result;
+    handle.getArgument("result", result);
+
+    result += data;
+    handle.setArgument("result", result);
+
+    return (0);
+}
+
+// Framework functions.
+
+int
+version() {
+    return (KEA_HOOKS_VERSION);
+}
+
+// load() initializes the user library if the main image was statically linked.
+int
+load(isc::hooks::LibraryHandle&) {
+#ifdef USE_STATIC_LINK
+    hooksStaticLinkInit();
+#endif
+    return (0);
+}
+
+}
+}
+
diff --git a/src/bin/netconf/tests/control_socket_unittests.cc b/src/bin/netconf/tests/control_socket_unittests.cc
new file mode 100644
index 0000000..fc4b35e
--- /dev/null
+++ b/src/bin/netconf/tests/control_socket_unittests.cc
@@ -0,0 +1,866 @@
+// Copyright (C) 2018-2022 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <netconf/netconf_config.h>
+#include <netconf/http_control_socket.h>
+#include <netconf/stdout_control_socket.h>
+#include <netconf/unix_control_socket.h>
+#include <asiolink/asio_wrapper.h>
+#include <asiolink/interval_timer.h>
+#include <asiolink/io_service.h>
+#include <http/listener.h>
+#include <http/post_request_json.h>
+#include <http/response_creator.h>
+#include <http/response_creator_factory.h>
+#include <http/response_json.h>
+#include <http/tests/response_test.h>
+#include <testutils/threaded_test.h>
+#include <testutils/sandbox.h>
+#include <yang/tests/sysrepo_setup.h>
+
+#include <gtest/gtest.h>
+
+#include <sstream>
+#include <thread>
+
+using namespace std;
+using namespace isc;
+using namespace isc::netconf;
+using namespace isc::asiolink;
+using namespace isc::data;
+using namespace isc::http;
+using namespace isc::http::test;
+using namespace isc::test;
+
+using isc::yang::test::SysrepoSetup;
+
+namespace {
+
+/// @brief Type definition for the pointer to Thread objects.
+typedef boost::shared_ptr<thread> ThreadPtr;
+
+//////////////////////////////// STDOUT ////////////////////////////////
+
+/// @brief Test derived StdoutControlSocket class.
+///
+/// This class exposes the constructor taking the output stream.
+class TestStdoutControlSocket : public StdoutControlSocket {
+public:
+    /// @brief Constructor.
+    ///
+    /// @param ctrl_sock The control socket configuration.
+    /// @param output The output stream.
+    TestStdoutControlSocket(CfgControlSocketPtr ctrl_sock, ostream& output)
+        : StdoutControlSocket(ctrl_sock, output) {
+    }
+
+    /// @brief Destructor.
+    virtual ~TestStdoutControlSocket() {
+    }
+};
+
+/// @brief Type definition for the pointer to the @c TestStdoutControlSocket.
+typedef boost::shared_ptr<TestStdoutControlSocket> TestStdoutControlSocketPtr;
+
+// Verifies that the createControlSocket template can create a stdout
+// control socket.
+TEST(StdoutControlSocketTest, createControlSocket) {
+    CfgControlSocketPtr cfg(new
+                    CfgControlSocket(CfgControlSocket::Type::STDOUT,
+                                     "",
+                                     Url("http://127.0.0.1:8000/")));
+    ASSERT_TRUE(cfg);
+    ControlSocketBasePtr cs = controlSocketFactory(cfg);
+    ASSERT_TRUE(cs);
+    StdoutControlSocketPtr scs =
+        boost::dynamic_pointer_cast<StdoutControlSocket>(cs);
+    EXPECT_TRUE(scs);
+}
+
+// Verifies that a stdout control socket does not implement configGet.
+TEST(StdoutControlSocketTest, configGet) {
+    CfgControlSocketPtr cfg(new
+                    CfgControlSocket(CfgControlSocket::Type::STDOUT,
+                                     "",
+                                     Url("http://127.0.0.1:8000/")));
+    ASSERT_TRUE(cfg);
+    StdoutControlSocketPtr scs(new StdoutControlSocket(cfg));
+    ASSERT_TRUE(scs);
+    EXPECT_THROW(scs->configGet("foo"), NotImplemented);
+}
+
+// Verifies that a stdout control socket does not nothing for configTest.
+TEST(StdoutControlSocketTest, configTest) {
+    CfgControlSocketPtr cfg(new
+                            CfgControlSocket(CfgControlSocket::Type::STDOUT,
+                                             "",
+                                             Url("http://127.0.0.1:8000/")));
+    ASSERT_TRUE(cfg);
+    StdoutControlSocketPtr scs(new StdoutControlSocket(cfg));
+    ASSERT_TRUE(scs);
+    ConstElementPtr answer;
+    ASSERT_NO_THROW_LOG(answer = scs->configTest(ConstElementPtr(), "foo"));
+
+    // Check answer.
+    ASSERT_TRUE(answer);
+    EXPECT_EQ("{ \"result\": 0 }", answer->str());
+}
+
+// Verifies that a stdout control socket outputs configSet argument.
+TEST(StdoutControlSocketTest, configSet) {
+    CfgControlSocketPtr cfg(new
+                            CfgControlSocket(CfgControlSocket::Type::STDOUT,
+                                             "",
+                                             Url("http://127.0.0.1:8000/")));
+    ASSERT_TRUE(cfg);
+    ostringstream os;
+    TestStdoutControlSocketPtr tscs(new TestStdoutControlSocket(cfg, os));
+    ASSERT_TRUE(tscs);
+    ConstElementPtr json = Element::fromJSON("{ \"bar\": 1 }");
+    ConstElementPtr answer;
+    ASSERT_NO_THROW_LOG(answer = tscs->configSet(json, "foo"));
+
+    // Check answer.
+    ASSERT_TRUE(answer);
+    EXPECT_EQ("{ \"result\": 0 }", answer->str());
+
+    // Check output.
+    string expected = "{\n  \"bar\": 1\n}\n";
+    EXPECT_EQ(expected, os.str());
+}
+
+//////////////////////////////// UNIX ////////////////////////////////
+
+/// @brief Test timeout in ms.
+const long TEST_TIMEOUT = 10000;
+
+/// @brief Test fixture class for unix control sockets.
+class UnixControlSocketTest : public ThreadedTest {
+public:
+    isc::test::Sandbox sandbox;
+
+    /// @brief Constructor.
+    UnixControlSocketTest()
+        : ThreadedTest(), io_service_() {
+    }
+
+
+    void SetUp() override {
+        SysrepoSetup::cleanSharedMemory();
+        removeUnixSocketFile();
+    }
+
+    void TearDown() override {
+        if (thread_) {
+            thread_->join();
+            thread_.reset();
+        }
+        // io_service must be stopped after the thread returns,
+        // otherwise the thread may never return if it is
+        // waiting for the completion of some asynchronous tasks.
+        io_service_.stop();
+        removeUnixSocketFile();
+    }
+
+    /// @brief Returns socket file path.
+    ///
+    /// If the KEA_SOCKET_TEST_DIR environment variable is specified, the
+    /// socket file is created in the location pointed to by this variable.
+    /// Otherwise, it is created in the build directory.
+    string unixSocketFilePath() {
+        std::string socket_path;
+        const char* env = getenv("KEA_SOCKET_TEST_DIR");
+        if (env) {
+            socket_path = std::string(env) + "/test-socket";
+        } else {
+            socket_path = sandbox.join("test-socket");
+        }
+        return (socket_path);
+    }
+
+    /// @brief Removes unix socket descriptor.
+    void removeUnixSocketFile() {
+        static_cast<void>(remove(unixSocketFilePath().c_str()));
+    }
+
+    /// @brief Create configuration of the control socket.
+    ///
+    /// @return a pointer to a control socket configuration.
+    CfgControlSocketPtr createCfgControlSocket() {
+        CfgControlSocketPtr cfg;
+        cfg.reset(new CfgControlSocket(CfgControlSocket::Type::UNIX,
+                                       unixSocketFilePath(),
+                                       Url("http://127.0.0.1:8000/")));
+        return (cfg);
+    }
+
+    /// @brief Thread reflecting server function.
+    void reflectServer();
+
+    /// @brief IOService object.
+    IOService io_service_;
+};
+
+/// @brief Server method running in a thread reflecting the command.
+///
+/// It creates the server socket, accepts client connection, read
+/// the command and send it back in a received JSON map.
+void
+UnixControlSocketTest::reflectServer() {
+    // Acceptor.
+    boost::asio::local::stream_protocol::acceptor
+        acceptor(io_service_.get_io_service());
+    EXPECT_NO_THROW(acceptor.open());
+    boost::asio::local::stream_protocol::endpoint
+        endpoint(unixSocketFilePath());
+    EXPECT_NO_THROW(acceptor.bind(endpoint));
+    EXPECT_NO_THROW(acceptor.listen());
+    boost::asio::local::stream_protocol::socket
+        socket(io_service_.get_io_service());
+
+    // Ready.
+    signalReady();
+
+    // Timeout.
+    IntervalTimer timer(io_service_);
+    bool timeout = false;
+    timer.setup([&timeout]() {
+            timeout = true;
+            FAIL() << "timeout";
+        }, 1500, IntervalTimer::ONE_SHOT);
+
+    // Accept.
+    bool accepted = false;
+    boost::system::error_code ec;
+    acceptor.async_accept(socket,
+                          [&ec, &accepted]
+                          (const boost::system::error_code& error) {
+                              ec = error;
+                              accepted = true;
+                          });
+    while (!accepted && !timeout) {
+        io_service_.run_one();
+    }
+    ASSERT_FALSE(ec);
+
+    // Receive command.
+    string rbuf(1024, ' ');
+    size_t received = 0;
+    socket.async_receive(boost::asio::buffer(&rbuf[0], rbuf.size()),
+                         [&ec, &received]
+                         (const boost::system::error_code& error, size_t cnt) {
+                             ec = error;
+                             received = cnt;
+                         });
+    while (!received && !timeout) {
+        io_service_.run_one();
+    }
+    ASSERT_FALSE(ec);
+    rbuf.resize(received);
+
+    // Reflect.
+    ElementPtr map = Element::createMap();
+    map->set("received", Element::create(rbuf));
+    string sbuf = map->str();
+
+    // Send back.
+    size_t sent = 0;
+    socket.async_send(boost::asio::buffer(&sbuf[0], sbuf.size()),
+                      [&ec, &sent]
+                      (const boost::system::error_code& error, size_t cnt) {
+                          ec = error;
+                          sent = cnt;
+                      });
+    while (!sent && !timeout) {
+        io_service_.run_one();
+    }
+    ASSERT_FALSE(ec);
+
+    // Stop timer.
+    timer.cancel();
+
+    // Close socket.
+    if (socket.is_open()) {
+        EXPECT_NO_THROW(socket.close());
+    }
+
+    EXPECT_FALSE(timeout);
+    EXPECT_TRUE(accepted);
+    EXPECT_TRUE(received);
+    EXPECT_TRUE(sent);
+    EXPECT_EQ(sent, sbuf.size());
+}
+
+// Verifies that the createControlSocket template can create an unix
+// control socket.
+TEST_F(UnixControlSocketTest, createControlSocket) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    ControlSocketBasePtr cs = controlSocketFactory(cfg);
+    ASSERT_TRUE(cs);
+    UnixControlSocketPtr ucs =
+        boost::dynamic_pointer_cast<UnixControlSocket>(cs);
+    EXPECT_TRUE(ucs);
+}
+
+// Verifies that unix control sockets handle configGet() as expected.
+TEST_F(UnixControlSocketTest, configGet) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    UnixControlSocketPtr ucs(new UnixControlSocket(cfg));
+    ASSERT_TRUE(ucs);
+
+    // Run a reflecting server in a thread.
+    thread_.reset(new thread([this]() { reflectServer(); }));
+
+    waitReady();
+
+    // Try configGet.
+    ConstElementPtr reflected;
+    EXPECT_NO_THROW(reflected = ucs->configGet("foo"));
+    ASSERT_TRUE(reflected);
+    ASSERT_EQ(Element::map, reflected->getType());
+    ConstElementPtr command = reflected->get("received");
+    ASSERT_TRUE(command);
+    ASSERT_EQ(Element::string, command->getType());
+    string expected = "{ \"command\": \"config-get\" }";
+    EXPECT_EQ(expected, command->stringValue());
+}
+
+// Verifies that unix control sockets handle configTest() as expected.
+TEST_F(UnixControlSocketTest, configTest) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    UnixControlSocketPtr ucs(new UnixControlSocket(cfg));
+    ASSERT_TRUE(ucs);
+
+    // Run a reflecting server in a thread.
+    thread_.reset(new thread([this]() { reflectServer(); }));
+
+    waitReady();
+
+    // Prepare a config to test.
+    ConstElementPtr json = Element::fromJSON("{ \"bar\": 1 }");
+
+    ConstElementPtr reflected;
+    EXPECT_NO_THROW(reflected = ucs->configTest(json, "foo"));
+    ASSERT_TRUE(reflected);
+    ASSERT_EQ(Element::map, reflected->getType());
+    ConstElementPtr command = reflected->get("received");
+    ASSERT_TRUE(command);
+    ASSERT_EQ(Element::string, command->getType());
+    string expected = "{ \"arguments\": { \"bar\": 1 }, "
+        "\"command\": \"config-test\" }";
+    EXPECT_EQ(expected, command->stringValue());
+}
+
+// Verifies that unix control sockets handle configSet() as expected.
+TEST_F(UnixControlSocketTest, configSet) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    UnixControlSocketPtr ucs(new UnixControlSocket(cfg));
+    ASSERT_TRUE(ucs);
+
+    // Run a reflecting server in a thread.
+    thread_.reset(new thread([this]() { reflectServer(); }));
+
+    waitReady();
+
+    // Prepare a config to set.
+    ConstElementPtr json = Element::fromJSON("{ \"bar\": 1 }");
+
+    ConstElementPtr reflected;
+    EXPECT_NO_THROW(reflected = ucs->configSet(json, "foo"));
+    ASSERT_TRUE(reflected);
+    ASSERT_EQ(Element::map, reflected->getType());
+    ConstElementPtr command = reflected->get("received");
+    ASSERT_TRUE(command);
+    ASSERT_EQ(Element::string, command->getType());
+    string expected = "{ \"arguments\": { \"bar\": 1 }, "
+        "\"command\": \"config-set\" }";
+    EXPECT_EQ(expected, command->stringValue());
+}
+
+// Verifies that unix control sockets handle timeouts.
+TEST_F(UnixControlSocketTest, timeout) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    UnixControlSocketPtr ucs(new UnixControlSocket(cfg));
+    ASSERT_TRUE(ucs);
+
+    // Run a timeout server in a thread.
+    thread_.reset(new thread([this]() { waitReady(); }));
+
+    // Try configGet: it should get a communication error,
+    EXPECT_THROW(ucs->configGet("foo"), ControlSocketError);
+    signalReady();
+}
+
+//////////////////////////////// HTTP ////////////////////////////////
+
+/// @brief IP address to which HTTP service is bound.
+const string SERVER_ADDRESS = "127.0.0.1";
+
+/// @brief Port number to which HTTP service is bound.
+const uint16_t SERVER_PORT = 18123;
+
+/// @brief Test HTTP JSON response.
+typedef TestHttpResponseBase<HttpResponseJson> Response;
+
+/// @brief Pointer to test HTTP JSON response.
+typedef boost::shared_ptr<Response> ResponsePtr;
+
+/// @brief Generic test HTTP response.
+typedef TestHttpResponseBase<HttpResponse> GenericResponse;
+
+/// @brief Pointer to generic test HTTP response.
+typedef boost::shared_ptr<GenericResponse> GenericResponsePtr;
+
+/// @brief Implementation of the HttpResponseCreator.
+///
+/// Send back the request in a received JSON map.
+class TestHttpResponseCreator : public HttpResponseCreator {
+public:
+    /// @brief Create a new request.
+    ///
+    /// @return Pointer to the new instance of the HttpRequest.
+    virtual HttpRequestPtr
+        createNewHttpRequest() const {
+        return (HttpRequestPtr(new PostHttpRequestJson()));
+    }
+
+protected:
+    /// @brief Creates HTTP response.
+    ///
+    /// @param request Pointer to the HTTP request.
+    /// @return Pointer to the generated HTTP response.
+    virtual HttpResponsePtr
+    createStockHttpResponse(const HttpRequestPtr& request,
+                            const HttpStatusCode& status_code) const {
+        // Data is in the request context.
+        HttpVersion http_version(request->context()->http_version_major_,
+                                 request->context()->http_version_minor_);
+        ResponsePtr response(new Response(http_version, status_code));
+        response->finalize();
+        return (response);
+    }
+
+    /// @brief Creates HTTP response.
+    ///
+    /// Build a response with reflected request in a received JSON map.
+    /// It can be told to respond with a partial JSON.
+    ///
+    /// @param request Pointer to the HTTP request.
+    /// @return Pointer to an object representing HTTP response.
+    virtual HttpResponsePtr
+    createDynamicHttpResponse(HttpRequestPtr request) {
+        // Request must always be JSON.
+        PostHttpRequestJsonPtr request_json =
+            boost::dynamic_pointer_cast<PostHttpRequestJson>(request);
+        if (!request_json) {
+            isc_throw(Unexpected, "request is not JSON");
+        }
+        ConstElementPtr body = request_json->getBodyAsJson();
+        if (!body) {
+            isc_throw(Unexpected, "can't get JSON from request");
+        }
+
+        // Check for the special partial JSON.
+        ConstElementPtr arguments = body->get("arguments");
+        if (arguments && (arguments->contains("want-partial"))) {
+            // Use a generic response.
+            GenericResponsePtr
+                response(new GenericResponse(request->getHttpVersion(),
+                                             HttpStatusCode::OK));
+            HttpResponseContextPtr ctx = response->context();
+            // Generate JSON response.
+            ctx->headers_.push_back(HttpHeaderContext("Content-Type",
+                                                      "application/json"));
+            // Not closed JSON map so it will fail.
+            ctx->body_ = "{";
+            response->finalize();
+            // Take into account the missing '}'.
+            response->setContentLength(2);
+            return (response);
+        }
+
+        // Reflect.
+        ResponsePtr response(new Response(request->getHttpVersion(),
+                                          HttpStatusCode::OK));
+        ElementPtr map = Element::createMap();
+        map->set("received", Element::create(body->str()));
+        response->setBodyAsJson(map);
+        response->finalize();
+        return (response);
+    }
+};
+
+/// @brief Implementation of the test HttpResponseCreatorFactory.
+class TestHttpResponseCreatorFactory : public HttpResponseCreatorFactory {
+public:
+
+    /// @brief Creates @ref TestHttpResponseCreator instance.
+    virtual HttpResponseCreatorPtr create() const {
+        HttpResponseCreatorPtr response_creator(new TestHttpResponseCreator());
+        return (response_creator);
+    }
+};
+
+/// @brief Test fixture class for http control sockets.
+class HttpControlSocketTest : public ThreadedTest {
+public:
+    void SetUp() override {
+        SysrepoSetup::cleanSharedMemory();
+    }
+
+    void TearDown() override {
+        SysrepoSetup::cleanSharedMemory();
+        if (thread_) {
+            thread_->join();
+            thread_.reset();
+        }
+        // io_service must be stopped after the thread returns,
+        // otherwise the thread may never return if it is
+        // waiting for the completion of some asynchronous tasks.
+        io_service_.stop();
+    }
+
+    /// @brief Returns socket URL.
+    static Url httpSocketUrl() {
+        ostringstream s;
+        s << "http://" << SERVER_ADDRESS << ":" << SERVER_PORT << "/";
+        return (Url(s.str()));
+    }
+
+    /// @brief Create configuration of the control socket.
+    ///
+    /// @return a pointer to a control socket configuration.
+    CfgControlSocketPtr createCfgControlSocket() {
+        CfgControlSocketPtr cfg;
+        cfg.reset(new CfgControlSocket(CfgControlSocket::Type::HTTP,
+                                       "", httpSocketUrl()));
+        return (cfg);
+    }
+
+    /// @brief Create the reflecting listener.
+    void createReflectListener();
+
+    /// @brief Start listener.
+    ///
+    /// Run IO in a thread.
+    void start() {
+        thread_.reset(new thread([this]() {
+            // The thread is ready to go. Signal it to the main
+            // thread so it can start the actual test.
+            signalReady();
+            // Until stop() is called run IO service.
+            while (!isStopping()) {
+                io_service_.run_one();
+            }
+            // Main thread signalled that the thread should
+            // terminate. Launch any outstanding IO service
+            // handlers.
+            io_service_.poll();
+            // Nothing more to do. Signal that the thread is
+            // done so as the main thread can close HTTP
+            // listener and clean up after the test.
+            signalStopped();
+        }));
+
+        // Main thread waits here for the thread to start.
+        waitReady();
+
+        // If the thread is ready to go, start the listener.
+        if (listener_) {
+            ASSERT_NO_THROW_LOG(listener_->start());
+        }
+    }
+
+    /// @brief Stop listener.
+    ///
+    /// Post an empty action to finish current run_one.
+    void stop() {
+        // Notify the thread that it should terminate.
+        signalStopping();
+        // If the thread is blocked on running the IO
+        // service, post the empty handler to cause
+        // run_one to return.
+        io_service_.post([]() { return; });
+        // We asked that the thread stops. Let's wait
+        // for it to signal that it has stopped.
+        waitStopped();
+
+        // Thread has terminated. We can stop the HTTP
+        // listener safely.
+        if (listener_) {
+            ASSERT_NO_THROW_LOG(listener_->stop());
+        }
+    }
+
+    /// @brief IOService object.
+    IOService io_service_;
+
+    /// @brief Pointer to listener.
+    HttpListenerPtr listener_;
+};
+
+/// @brief Create the reflecting listener.
+void
+HttpControlSocketTest::createReflectListener() {
+    HttpResponseCreatorFactoryPtr
+        factory(new TestHttpResponseCreatorFactory());
+    listener_.reset(new
+                HttpListener(io_service_,
+                             IOAddress(SERVER_ADDRESS), SERVER_PORT,
+                             TlsContextPtr(), factory,
+                             HttpListener::RequestTimeout(2000),
+                             HttpListener::IdleTimeout(2000)));
+}
+
+// Verifies that the createControlSocket template can create a http
+// control socket.
+TEST_F(HttpControlSocketTest, createControlSocket) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    ControlSocketBasePtr cs = controlSocketFactory(cfg);
+    ASSERT_TRUE(cs);
+    HttpControlSocketPtr hcs =
+        boost::dynamic_pointer_cast<HttpControlSocket>(cs);
+    EXPECT_TRUE(hcs);
+}
+
+// Verifies that http control sockets handle configGet() as expected.
+TEST_F(HttpControlSocketTest, configGet) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    HttpControlSocketPtr hcs(new HttpControlSocket(cfg));
+    ASSERT_TRUE(hcs);
+
+    // Run a reflecting server in a thread.
+    createReflectListener();
+    start();
+
+    // Try configGet.
+    ConstElementPtr reflected;
+    EXPECT_NO_THROW(reflected = hcs->configGet("foo"));
+    stop();
+
+    // Check result.
+    ASSERT_TRUE(reflected);
+    ASSERT_EQ(Element::map, reflected->getType());
+    ConstElementPtr command = reflected->get("received");
+    ASSERT_TRUE(command);
+    ASSERT_EQ(Element::string, command->getType());
+    string expected = "{ \"command\": \"config-get\", "
+        "\"remote-address\": \"127.0.0.1\", \"service\": [ \"foo\" ] }";
+    EXPECT_EQ(expected, command->stringValue());
+}
+
+// Verifies that http control sockets handle configGet() for a control agent
+// as expected.
+TEST_F(HttpControlSocketTest, configGetCA) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    HttpControlSocketPtr hcs(new HttpControlSocket(cfg));
+    ASSERT_TRUE(hcs);
+
+    // Run a reflecting server in a thread.
+    createReflectListener();
+    start();
+
+    // Try configGet.
+    ConstElementPtr reflected;
+    EXPECT_NO_THROW(reflected = hcs->configGet("ca"));
+    stop();
+
+    // Check result.
+    ASSERT_TRUE(reflected);
+    ASSERT_EQ(Element::map, reflected->getType());
+    ConstElementPtr command = reflected->get("received");
+    ASSERT_TRUE(command);
+    ASSERT_EQ(Element::string, command->getType());
+    string expected = "{ \"command\": \"config-get\", \"remote-address\": \"127.0.0.1\" }";
+    EXPECT_EQ(expected, command->stringValue());
+}
+
+// Verifies that http control sockets handle configTest() as expected.
+TEST_F(HttpControlSocketTest, configTest) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    HttpControlSocketPtr hcs(new HttpControlSocket(cfg));
+    ASSERT_TRUE(hcs);
+
+    // Run a reflecting server in a thread.
+    createReflectListener();
+    start();
+
+    // Prepare a config to test.
+    ConstElementPtr json = Element::fromJSON("{ \"bar\": 1 }");
+
+    // Try configTest.
+    ConstElementPtr reflected;
+    EXPECT_NO_THROW(reflected = hcs->configTest(json, "foo"));
+    stop();
+
+    // Check result.
+    ASSERT_TRUE(reflected);
+    ASSERT_EQ(Element::map, reflected->getType());
+    ConstElementPtr command = reflected->get("received");
+    ASSERT_TRUE(command);
+    ASSERT_EQ(Element::string, command->getType());
+    string expected = "{ \"arguments\": { \"bar\": 1 }, "
+        "\"command\": \"config-test\", "
+        "\"remote-address\": \"127.0.0.1\", \"service\": [ \"foo\" ] }";
+    EXPECT_EQ(expected, command->stringValue());
+}
+
+// Verifies that http control sockets handle configTest() for a control agent
+// as expected.
+TEST_F(HttpControlSocketTest, configTestCA) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    HttpControlSocketPtr hcs(new HttpControlSocket(cfg));
+    ASSERT_TRUE(hcs);
+
+    // Run a reflecting server in a thread.
+    createReflectListener();
+    start();
+
+    // Prepare a config to test.
+    ConstElementPtr json = Element::fromJSON("{ \"bar\": 1 }");
+
+    // Try configTest.
+    ConstElementPtr reflected;
+    EXPECT_NO_THROW(reflected = hcs->configTest(json, "ca"));
+    stop();
+
+    // Check result.
+    ASSERT_TRUE(reflected);
+    ASSERT_EQ(Element::map, reflected->getType());
+    ConstElementPtr command = reflected->get("received");
+    ASSERT_TRUE(command);
+    ASSERT_EQ(Element::string, command->getType());
+    string expected = "{ \"arguments\": { \"bar\": 1 }, "
+        "\"command\": \"config-test\", \"remote-address\": \"127.0.0.1\" }";
+    EXPECT_EQ(expected, command->stringValue());
+}
+
+// Verifies that http control sockets handle configSet() as expected.
+TEST_F(HttpControlSocketTest, configSet) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    HttpControlSocketPtr hcs(new HttpControlSocket(cfg));
+    ASSERT_TRUE(hcs);
+
+    // Run a reflecting server in a thread.
+    createReflectListener();
+    start();
+
+    // Prepare a config to set.
+    ConstElementPtr json = Element::fromJSON("{ \"bar\": 1 }");
+
+    // Try configSet.
+    ConstElementPtr reflected;
+    EXPECT_NO_THROW(reflected = hcs->configSet(json, "foo"));
+    stop();
+
+    // Check result.
+    ASSERT_TRUE(reflected);
+    ASSERT_EQ(Element::map, reflected->getType());
+    ConstElementPtr command = reflected->get("received");
+    ASSERT_TRUE(command);
+    ASSERT_EQ(Element::string, command->getType());
+    string expected = "{ \"arguments\": { \"bar\": 1 }, "
+        "\"command\": \"config-set\", "
+        "\"remote-address\": \"127.0.0.1\", \"service\": [ \"foo\" ] }";
+    EXPECT_EQ(expected, command->stringValue());
+}
+
+// Verifies that http control sockets handle configSet() for a control agent
+// as expected.
+TEST_F(HttpControlSocketTest, configSetCA) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    HttpControlSocketPtr hcs(new HttpControlSocket(cfg));
+    ASSERT_TRUE(hcs);
+
+    // Run a reflecting server in a thread.
+    createReflectListener();
+    start();
+
+    // Prepare a config to set.
+    ConstElementPtr json = Element::fromJSON("{ \"bar\": 1 }");
+
+    // Try configSet.
+    ConstElementPtr reflected;
+    EXPECT_NO_THROW(reflected = hcs->configSet(json, "ca"));
+    stop();
+
+    // Check result.
+    ASSERT_TRUE(reflected);
+    ASSERT_EQ(Element::map, reflected->getType());
+    ConstElementPtr command = reflected->get("received");
+    ASSERT_TRUE(command);
+    ASSERT_EQ(Element::string, command->getType());
+    string expected = "{ \"arguments\": { \"bar\": 1 }, "
+        "\"command\": \"config-set\", \"remote-address\": \"127.0.0.1\" }";
+    EXPECT_EQ(expected, command->stringValue());
+}
+
+// Verifies that http control sockets handle can't connect errors.
+TEST_F(HttpControlSocketTest, connectionRefused) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    HttpControlSocketPtr hcs(new HttpControlSocket(cfg));
+    ASSERT_TRUE(hcs);
+
+    // Try configGet: it should get a communication error,
+    try {
+        hcs->configGet("foo");
+    } catch (const ControlSocketError& ex) {
+        EXPECT_EQ("communication error (code): Connection refused",
+                  string(ex.what()));
+    } catch (const std::exception& ex) {
+        FAIL() << "unexpected exception: " << ex.what();
+    } catch (...) {
+        FAIL() << "unexpected exception";
+    }
+}
+
+// Verifies that http control sockets handle timeout errors.
+TEST_F(HttpControlSocketTest, partial) {
+    CfgControlSocketPtr cfg = createCfgControlSocket();
+    ASSERT_TRUE(cfg);
+    HttpControlSocketPtr hcs(new HttpControlSocket(cfg));
+    ASSERT_TRUE(hcs);
+
+    // Create the server but do not start it.
+    createReflectListener();
+    start();
+
+    // Prepare a special config to set.
+    ConstElementPtr json = Element::fromJSON("{ \"want-partial\": true }");
+
+    // Warn this makes time.
+    cout << "this test waits for 2 seconds" << endl;
+
+    // Try configSet: it should get a communication error,
+    try {
+        hcs->configSet(json, "foo");
+    } catch (const ControlSocketError& ex) {
+        EXPECT_EQ("communication error (code): End of file",
+                  string(ex.what()));
+    } catch (const std::exception& ex) {
+        FAIL() << "unexpected exception: " << ex.what();
+    } catch (...) {
+        FAIL() << "unexpected exception";
+    }
+    stop();
+}
+
+}  // namespace
diff --git a/src/bin/netconf/tests/get_config_unittest.cc b/src/bin/netconf/tests/get_config_unittest.cc
new file mode 100644
index 0000000..fd5c2e6
--- /dev/null
+++ b/src/bin/netconf/tests/get_config_unittest.cc
@@ -0,0 +1,294 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <cc/data.h>
+#include <cc/command_interpreter.h>
+#include <testutils/gtest_utils.h>
+#include <testutils/user_context_utils.h>
+#include <process/testutils/d_test_stubs.h>
+#include <netconf/netconf_cfg_mgr.h>
+#include <netconf/parser_context.h>
+
+#include <boost/scoped_ptr.hpp>
+
+#include <gtest/gtest.h>
+
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <sstream>
+
+#include "test_data_files_config.h"
+#include "test_libraries.h"
+
+using namespace isc::netconf;
+using namespace isc::config;
+using namespace isc::data;
+using namespace isc::process;
+using namespace isc::test;
+
+namespace {
+
+/// @name How to generate the testdata/get_config.json file
+///
+/// Define GENERATE_ACTION and recompile. Run netconf_unittests on
+/// NetconfGetCfgTest redirecting the standard error to a temporary
+/// file, e.g. by
+/// @code
+///    ./netconf_unittests --gtest_filter="NetconfGetCfg*" > /dev/null 2> u
+/// @endcode
+///
+/// Update testdata/get_config.json using the temporary file content,
+/// (removing head comment and restoring hook library path),
+/// recompile without GENERATE_ACTION.
+
+/// @brief the generate action
+/// false means do nothing, true means unparse extracted configurations
+#ifdef GENERATE_ACTION
+const bool generate_action = true;
+#else
+const bool generate_action = false;
+#endif
+
+/// @brief Read a file into a string
+std::string
+readFile(const std::string& file_path) {
+    std::ifstream ifs(file_path);
+    if (!ifs.is_open()) {
+        ADD_FAILURE() << "readFile cannot open " << file_path;
+        isc_throw(isc::Unexpected, "readFile cannot open " << file_path);
+    }
+    std::string lines;
+    std::string line;
+    while (std::getline(ifs, line)) {
+        lines += line + "\n";
+    }
+    ifs.close();
+    return (lines);
+}
+
+/// @brief Runs parser in JSON mode
+ElementPtr
+parseJSON(const std::string& in, bool verbose = false) {
+    try {
+        ParserContext ctx;
+        return (ctx.parseString(in, ParserContext::PARSER_JSON));
+    } catch (const std::exception& ex) {
+        if (verbose) {
+            std::cout << "EXCEPTION: " << ex.what() << std::endl;
+        }
+        throw;
+    }
+}
+
+/// @brief Runs parser in NETCONF mode
+ElementPtr
+parseNETCONF(const std::string& in, bool verbose = false) {
+    try {
+        ParserContext ctx;
+        return (ctx.parseString(in, ParserContext::PARSER_NETCONF));
+    } catch (const std::exception& ex) {
+        if (verbose) {
+            std::cout << "EXCEPTION: " << ex.what() << std::endl;
+        }
+        throw;
+    }
+}
+
+/// @brief Replace the library path
+void
+pathReplacer(ConstElementPtr netconf_cfg) {
+    ConstElementPtr hooks_libs = netconf_cfg->get("hooks-libraries");
+    if (!hooks_libs || hooks_libs->empty()) {
+        return;
+    }
+    ElementPtr first_lib = hooks_libs->getNonConst(0);
+    std::string lib_path(BASIC_CALLOUT_LIBRARY);
+    first_lib->set("library", Element::create(lib_path));
+}
+
+/// @brief Almost regular netconf CfgMgr with internal parse method exposed.
+class NakedNetconfCfgMgr : public NetconfCfgMgr {
+public:
+    using NetconfCfgMgr::parse;
+};
+
+}  // namespace
+
+/// @brief Test fixture class
+class NetconfGetCfgTest : public ConfigParseTest {
+public:
+    NetconfGetCfgTest()
+    : rcode_(-1) {
+        srv_.reset(new NakedNetconfCfgMgr());
+        // Create fresh context.
+        resetConfiguration();
+    }
+
+    ~NetconfGetCfgTest() {
+        resetConfiguration();
+    }
+
+    /// @brief Parse and Execute configuration
+    ///
+    /// Parses a configuration and executes a configuration of the server.
+    /// If the operation fails, the current test will register a failure.
+    ///
+    /// @param config Configuration to parse
+    /// @param operation Operation being performed.  In the case of an error,
+    ///        the error text will include the string "unable to <operation>.".
+    ///
+    /// @return true if the configuration succeeded, false if not.
+    bool
+    executeConfiguration(const std::string& config, const char* operation) {
+        // try JSON parser
+        ConstElementPtr json;
+        try {
+            json = parseJSON(config, true);
+        } catch (const std::exception& ex) {
+            ADD_FAILURE() << "invalid JSON for " << operation
+                          << " failed with " << ex.what()
+                          << " on\n" << config << "\n";
+            return (false);
+        }
+
+        // try NETCONF parser
+        try {
+            json = parseNETCONF(config, true);
+        } catch (...) {
+            ADD_FAILURE() << "parsing failed for " << operation
+                          << " on\n" << prettyPrint(json) << "\n";
+            return (false);
+        }
+
+        // get Netconf element
+        ConstElementPtr ca = json->get("Netconf");
+        if (!ca) {
+            ADD_FAILURE() << "cannot get Netconf for " << operation
+                          << " on\n" << prettyPrint(json) << "\n";
+            return (false);
+        }
+
+        // update hooks-libraries
+        pathReplacer(ca);
+
+        // try NETCONF configure
+        ConstElementPtr status;
+        try {
+            status = srv_->parse(ca, true);
+        } catch (const std::exception& ex) {
+            ADD_FAILURE() << "configure for " << operation
+                          << " failed with " << ex.what()
+                          << " on\n" << prettyPrint(json) << "\n";
+            return (false);
+        }
+
+        // The status object must not be NULL
+        if (!status) {
+            ADD_FAILURE() << "configure for " << operation
+                          << " returned null on\n"
+                          << prettyPrint(json) << "\n";
+            return (false);
+        }
+
+        // Returned value should be 0 (configuration success)
+        comment_ = parseAnswer(rcode_, status);
+        if (rcode_ != 0) {
+            string reason = "";
+            if (comment_) {
+                reason = string(" (") + comment_->stringValue() + string(")");
+            }
+            ADD_FAILURE() << "configure for " << operation
+                          << " returned error code "
+                          << rcode_ << reason << " on\n"
+                          << prettyPrint(json) << "\n";
+            return (false);
+        }
+        return (true);
+    }
+
+    /// @brief Reset configuration database.
+    ///
+    /// This function resets configuration data base by
+    /// removing managed servers and hooks. Reset must
+    /// be performed after each test to make sure that
+    /// contents of the database do not affect result of
+    /// subsequent tests.
+    void resetConfiguration() {
+        string config = "{ \"Netconf\": { } }";
+        EXPECT_TRUE(executeConfiguration(config, "reset config"));
+    }
+
+    boost::scoped_ptr<NakedNetconfCfgMgr> srv_; ///< Netconf server under test
+    int rcode_;                       ///< Return code from element parsing
+    ConstElementPtr comment_;         ///< Reason for parse fail
+};
+
+// Test a simple configuration.
+TEST_F(NetconfGetCfgTest, simple) {
+
+    // get the simple configuration
+    std::string simple_file = string(CFG_EXAMPLES) + "/" + "simple-dhcp4.json";
+    std::string config;
+    ASSERT_NO_THROW_LOG(config = readFile(simple_file));
+
+    // get the expected configuration
+    std::string expected_file =
+        std::string(NETCONF_TEST_DATA_DIR) + "/" + "get_config.json";
+    std::string expected;
+    ASSERT_NO_THROW_LOG(expected = readFile(expected_file));
+
+    // execute the sample configuration
+    ASSERT_TRUE(executeConfiguration(config, "simple config"));
+
+    // unparse it
+    NetconfConfigPtr context = srv_->getNetconfConfig();
+    ConstElementPtr unparsed;
+    ASSERT_NO_THROW_LOG(unparsed = context->toElement());
+
+    // dump if wanted else check
+    if (generate_action) {
+        std::cerr << "// Generated Configuration (remove this line)\n";
+        ASSERT_NO_THROW_LOG(expected = prettyPrint(unparsed));
+        prettyPrint(unparsed, std::cerr, 0, 4);
+        std::cerr << "\n";
+    } else {
+        // get the expected config using the netconf syntax parser
+        ElementPtr jsond;
+        ASSERT_NO_THROW_LOG(jsond = parseNETCONF(expected, true));
+        // get the expected config using the generic JSON syntax parser
+        ElementPtr jsonj;
+        ASSERT_NO_THROW_LOG(jsonj = parseJSON(expected));
+        // the generic JSON parser does not handle comments
+        EXPECT_TRUE(isEquivalent(jsond, moveComments(jsonj)));
+        // replace the path by its actual value
+        ConstElementPtr ca;
+        ASSERT_NO_THROW_LOG(ca = jsonj->get("Netconf"));
+        ASSERT_TRUE(ca);
+        pathReplacer(ca);
+        // check that unparsed and updated expected values match
+        EXPECT_TRUE(isEquivalent(unparsed, jsonj));
+        // check on pretty prints too
+        std::string current = prettyPrint(unparsed, 0, 4);
+        std::string expected2 = prettyPrint(jsonj, 0, 4);
+        EXPECT_EQ(expected2, current);
+        if (expected2 != current) {
+            expected = current + "\n";
+        }
+    }
+
+    // execute the netconft configuration
+    EXPECT_TRUE(executeConfiguration(expected, "unparsed config"));
+
+    // is it a fixed point?
+    NetconfConfigPtr context2 = srv_->getNetconfConfig();
+    ConstElementPtr unparsed2;
+    ASSERT_NO_THROW_LOG(unparsed2 = context2->toElement());
+    ASSERT_TRUE(unparsed2);
+    EXPECT_TRUE(isEquivalent(unparsed, unparsed2));
+}
diff --git a/src/bin/netconf/tests/netconf_cfg_mgr_unittests.cc b/src/bin/netconf/tests/netconf_cfg_mgr_unittests.cc
new file mode 100644
index 0000000..1ec7b87
--- /dev/null
+++ b/src/bin/netconf/tests/netconf_cfg_mgr_unittests.cc
@@ -0,0 +1,738 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <netconf/netconf_cfg_mgr.h>
+#include <netconf/parser_context.h>
+#include <exceptions/exceptions.h>
+#include <cc/command_interpreter.h>
+#include <process/testutils/d_test_stubs.h>
+#include <process/d_cfg_mgr.h>
+#include <yang/yang_models.h>
+#include <testutils/gtest_utils.h>
+#include <testutils/test_to_element.h>
+#include <netconf/tests/test_libraries.h>
+
+#include <boost/scoped_ptr.hpp>
+
+#include <gtest/gtest.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::netconf;
+using namespace isc::config;
+using namespace isc::data;
+using namespace isc::hooks;
+using namespace isc::http;
+using namespace isc::process;
+using namespace isc::yang;
+
+namespace  {
+
+/// @brief Almost regular netconf CfgMgr with internal parse method exposed.
+class NakedNetconfCfgMgr : public NetconfCfgMgr {
+public:
+    using NetconfCfgMgr::parse;
+};
+
+// Tests construction of NetconfCfgMgr class.
+TEST(NetconfCfgMgr, construction) {
+    boost::scoped_ptr<NetconfCfgMgr> cfg_mgr;
+
+    // Verify that configuration manager constructions without error.
+    ASSERT_NO_THROW_LOG(cfg_mgr.reset(new NetconfCfgMgr()));
+
+    // Verify that the context can be retrieved and is not null.
+    NetconfConfigPtr context;
+    ASSERT_NO_THROW_LOG(context = cfg_mgr->getNetconfConfig());
+    EXPECT_TRUE(context);
+
+    // Verify that the manager can be destructed without error.
+    EXPECT_NO_THROW(cfg_mgr.reset());
+}
+
+// Tests if getContext can be retrieved.
+TEST(NetconfCfgMgr, getContext) {
+    NetconfCfgMgr cfg_mgr;
+
+    NetconfConfigPtr ctx;
+    ASSERT_NO_THROW_LOG(ctx = cfg_mgr.getNetconfConfig());
+    ASSERT_TRUE(ctx);
+}
+
+// Tests if context can store and retrieve managed server information.
+TEST(NetconfCfgMgr, contextServer) {
+
+    NetconfConfig ctx;
+
+    // Check managed server parameters.
+    // By default, there are no server stored.
+    ASSERT_TRUE(ctx.getCfgServersMap());
+    EXPECT_EQ(0, ctx.getCfgServersMap()->size());
+
+    CfgControlSocketPtr
+        socket1(new CfgControlSocket(CfgControlSocket::Type::UNIX,
+                                     "socket1",
+                                     Url("http://127.0.0.1:8000/")));
+    CfgServerPtr server1(new CfgServer("model1", socket1));
+    CfgControlSocketPtr
+        socket2(new CfgControlSocket(CfgControlSocket::Type::UNIX,
+                                     "socket2",
+                                     Url("http://127.0.0.1:8000/")));
+    CfgServerPtr server2(new CfgServer("model2", socket2));
+    CfgControlSocketPtr
+        socket3(new CfgControlSocket(CfgControlSocket::Type::UNIX,
+                                     "socket3",
+                                     Url("http://127.0.0.1:8000/")));
+    CfgServerPtr server3(new CfgServer("model3", socket3));
+    CfgControlSocketPtr
+        socket4(new CfgControlSocket(CfgControlSocket::Type::UNIX,
+                                     "socket4",
+                                     Url("http://127.0.0.1:8000/")));
+    CfgServerPtr server4(new CfgServer("model4", socket4));
+
+    // Ok, now set the server for D2
+    EXPECT_NO_THROW(ctx.getCfgServersMap()->insert(make_pair("d2", server1)));
+
+    // Now check the values returned
+    EXPECT_EQ(1, ctx.getCfgServersMap()->size());
+    ASSERT_NO_THROW_LOG(ctx.getCfgServersMap()->at("d2"));
+    EXPECT_EQ(server1, ctx.getCfgServersMap()->at("d2"));
+    EXPECT_THROW(ctx.getCfgServersMap()->at("dhcp4"), std::out_of_range);
+
+    // Now set the v6 server and sanity check again
+    EXPECT_NO_THROW(ctx.getCfgServersMap()->insert(make_pair("dhcp6", server2)));
+
+    // Should be possible to retrieve two servers
+    EXPECT_EQ(2, ctx.getCfgServersMap()->size());
+    ASSERT_NO_THROW_LOG(ctx.getCfgServersMap()->at("dhcp6"));
+    EXPECT_EQ(server1, ctx.getCfgServersMap()->at("d2"));
+    EXPECT_EQ(server2, ctx.getCfgServersMap()->at("dhcp6"));
+
+    // Finally, set all servers.
+    EXPECT_NO_THROW(ctx.getCfgServersMap()->insert(make_pair("dhcp4", server3)));
+    EXPECT_NO_THROW(ctx.getCfgServersMap()->insert(make_pair("ca", server4)));
+    EXPECT_EQ(4, ctx.getCfgServersMap()->size());
+    ASSERT_NO_THROW_LOG(ctx.getCfgServersMap()->at("dhcp4"));
+    ASSERT_NO_THROW_LOG(ctx.getCfgServersMap()->at("ca"));
+    EXPECT_EQ(server3, ctx.getCfgServersMap()->at("dhcp4"));
+    EXPECT_EQ(server4, ctx.getCfgServersMap()->at("ca"));
+}
+
+// Tests if the context can store and retrieve hook libs information.
+TEST(NetconfCfgMgr, contextHookParams) {
+    NetconfConfig ctx;
+
+    // By default there should be no hooks.
+    HooksConfig& libs = ctx.getHooksConfig();
+    EXPECT_TRUE(libs.get().empty());
+
+    libs.add("libone.so", ConstElementPtr());
+    libs.add("libtwo.so", Element::fromJSON("{\"foo\": true}"));
+    libs.add("libthree.so", Element::fromJSON("{\"bar\": 42}"));
+
+    const HooksConfig& stored_libs = ctx.getHooksConfig();
+    EXPECT_EQ(3, stored_libs.get().size());
+
+    EXPECT_EQ(libs.get(), stored_libs.get());
+}
+
+// Tests if the context can store and retrieve globals.
+TEST(NetconfCfgMgr, contextGlobals) {
+    NetconfConfig ctx;
+
+    // By default there should be no globals.
+    ConstElementPtr globals = ctx.getConfiguredGlobals();
+    ASSERT_TRUE(globals);
+    ASSERT_EQ(Element::map, globals->getType());
+    EXPECT_EQ(0, globals->mapValue().size());
+
+    // Attempting to extract globals from a non-map should throw.
+    ASSERT_THROW(ctx.extractConfiguredGlobals(Element::create(777)), BadValue);
+
+    // Now let's create a configuration from which to extract global scalars.
+    // Extraction (currently) has no business logic, so the elements we use
+    // can be arbitrary.
+    ConstElementPtr global_cfg;
+    string global_cfg_str =
+    "{\n"
+    " \"astring\": \"okay\",\n"
+    " \"amap\": { \"not-this\":777, \"not-that\": \"poo\" },\n"
+    " \"anint\": 444,\n"
+    " \"alist\": [ 1, 2, 3 ],\n"
+    " \"abool\": true\n"
+        "}\n";
+    ASSERT_NO_THROW_LOG(global_cfg = Element::fromJSON(global_cfg_str));
+
+    // Extract globals from the config.
+    ASSERT_NO_THROW_LOG(ctx.extractConfiguredGlobals(global_cfg));
+
+    // Now see if the extract was correct.
+    globals = ctx.getConfiguredGlobals();
+    ASSERT_TRUE(globals);
+    ASSERT_EQ(Element::map, globals->getType());
+    EXPECT_NE(0, globals->mapValue().size());
+
+    // Maps and lists should be excluded.
+    for (auto it : globals->mapValue()) {
+        if (it.first == "astring") {
+            ASSERT_EQ(Element::string, it.second->getType());
+            EXPECT_EQ("okay", it.second->stringValue());
+        } else if (it.first == "anint") {
+            ASSERT_EQ(Element::integer, it.second->getType());
+            EXPECT_EQ(444, it.second->intValue());
+        } else if (it.first == "abool") {
+            ASSERT_EQ(Element::boolean, it.second->getType());
+            EXPECT_TRUE(it.second->boolValue());
+        } else {
+            ADD_FAILURE() << "unexpected element found:" << it.first;
+        }
+    }
+}
+
+/// @brief Netconf configurations used in tests.
+const char* NETCONF_CONFIGS[] = {
+
+    // configuration 0: empty (nothing specified)
+    "{ }",
+
+    // Configuration 1: global parameters only (no server, not hooks)
+    "{\n"
+    "    \"boot-update\": false,\n"
+    "    \"subscribe-changes\": false,\n"
+    "    \"validate-changes\": false\n"
+    "}",
+
+    // Configuration 2: 1 server
+    "{\n"
+    "    \"boot-update\": false,\n"
+    "    \"managed-servers\": {\n"
+    "        \"dhcp4\": {\n"
+    "            \"boot-update\": true,\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-name\": \"/tmp/socket-v4\"\n"
+    "            }\n"
+    "        }\n"
+    "    }\n"
+    "}",
+
+    // Configuration 3: all 4 servers
+    "{\n"
+    "    \"boot-update\": false,\n"
+    "    \"managed-servers\": {\n"
+    "        \"dhcp4\": {\n"
+    "            \"boot-update\": true,\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-name\": \"/tmp/socket-v4\"\n"
+    "            }\n"
+    "        },\n"
+    "        \"dhcp6\": {\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-name\": \"/tmp/socket-v6\"\n"
+    "            }\n"
+    "        },\n"
+    "        \"d2\": {\n"
+    "            \"subscribe-changes\": false,\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-name\": \"/tmp/socket-d2\"\n"
+    "            }\n"
+    "        },\n"
+    "        \"ca\": {\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-name\": \"/tmp/socket-ca\"\n"
+    "            }\n"
+    "        }\n"
+    "    }\n"
+    "}",
+
+    // Configuration 4: 1 server and hooks
+    // Netconf is able to load hook libraries that augment its operation.
+    // The primary functionality is the ability to add new commands.
+    "{\n"
+    "    \"managed-servers\": {\n"
+    "        \"dhcp4\": {\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-name\": \"/tmp/socket-v4\"\n"
+    "            }\n"
+    "        }\n"
+    "    },\n"
+    "    \"hooks-libraries\": ["
+    "        {"
+    "          \"library\": \"%LIBRARY%\","
+    "              \"parameters\": {\n"
+    "              \"param1\": \"foo\"\n"
+    "            }\n"
+    "        }\n"
+    "     ]\n"
+    "}",
+
+    // Configuration 5: 1 server (d2 only)
+    "{\n"
+    "    \"managed-servers\": {\n"
+    "        \"d2\": {\n"
+    "            \"subscribe-changes\": false,\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-name\": \"/tmp/socket-d2\"\n"
+    "            }\n"
+    "        }\n"
+    "    }\n"
+    "}",
+
+    // Configuration 6: 1 server (dhcp6 only)
+    "{\n"
+    "    \"managed-servers\": {\n"
+    "        \"dhcp6\": {\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-name\": \"/tmp/socket-v6\"\n"
+    "            }\n"
+    "        }\n"
+    "    }\n"
+    "}",
+
+    // Configuration 7: 2 servers with user contexts and comments
+    "{\n"
+    "    \"user-context\": { \"comment\": \"Indirect comment\" },\n"
+    "    \"managed-servers\": {\n"
+    "        \"dhcp4\": {\n"
+    "            \"comment\": \"dhcp4 server\",\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-name\": \"/tmp/socket-v4\"\n"
+    "            }\n"
+    "        },\n"
+    "        \"dhcp6\": {\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-name\": \"/tmp/socket-v6\",\n"
+    "                \"user-context\": { \"version\": 1 }\n"
+    "            }\n"
+    "        }\n"
+    "   }\n"
+    "}",
+
+    // Configuration 8: empty server with no control socket
+    "{\n"
+    "    \"managed-servers\": {\n"
+    "        \"dhcp4\": {\n"
+    "            \"comment\": \"empty map not allowed\"\n"
+    "        }\n"
+    "    }\n"
+    "}",
+
+    // Configuration 9: empty control socket
+    "{\n"
+    "    \"boot-update\": false,\n"
+    "    \"subscribe-changes\": false,\n"
+    "    \"validate-changes\": false,\n"
+    "    \"managed-servers\": {\n"
+    "        \"dhcp4\": {\n"
+    "            \"control-socket\": {\n"
+    "                \"comment\": \"empty map not allowed\"\n"
+    "            }\n"
+    "        }\n"
+    "    }\n"
+    "}",
+
+    // Configuration 10: bad socket type
+    "{\n"
+    "    \"managed-servers\": {\n"
+    "        \"dhcp6\": {\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-type\": \"tcp\"\n"
+    "            }\n"
+    "        }\n"
+    "    }\n"
+    "}",
+
+    // Configuration 11: invalid socket Url
+    "{\n"
+    "    \"managed-servers\": {\n"
+    "        \"dhcp6\": {\n"
+    "            \"control-socket\": {\n"
+    "                \"socket-url\": \"bad\"\n"
+    "            }\n"
+    "        }\n"
+    "    }\n"
+    "}"
+};
+
+// Tests the handling of bad socket type. Can't use the fixture class
+// because the Netconf parser does not allow bad socket types.
+TEST(NetconfParser, badSocketType) {
+    ConstElementPtr json;
+    ParserContext parser;
+    EXPECT_NO_THROW(json = parser.parseString(NETCONF_CONFIGS[10],
+                                              ParserContext::PARSER_JSON));
+    ConstElementPtr answer;
+    NakedNetconfCfgMgr cfg_mgr;
+    EXPECT_NO_THROW(answer = cfg_mgr.parse(json, false));
+    int rcode = 0;
+    string expected =
+        "\"Unknown control socket type: tcp 'tcp' (<string>:5:32)\"";
+    EXPECT_EQ(expected, parseAnswer(rcode, answer)->str());
+    EXPECT_EQ(1, rcode);
+}
+
+/// @brief Class used for testing CfgMgr
+class NetconfParserTest : public isc::process::ConfigParseTest {
+public:
+
+    /// @brief Tries to load input text as a configuration
+    ///
+    /// @param config text containing input configuration
+    /// @param expected_answer expected result of configuration (0 = success)
+    void configParse(const char* config, int expected_answer) {
+        isc::netconf::ParserContext parser;
+        ConstElementPtr json = parser.parseString(config, ParserContext::PARSER_SUB_NETCONF);
+
+        EXPECT_NO_THROW(answer_ = cfg_mgr_.parse(json, false));
+        EXPECT_TRUE(checkAnswer(expected_answer));
+    }
+
+    /// @brief Replaces %LIBRARY% with specified library name
+    ///
+    /// @param config input config text (should contain "%LIBRARY%" string)
+    /// @param lib_name %LIBRARY% will be replaced with that name
+    /// @return configuration text with library name replaced
+    string pathReplacer(const char* config, const char* lib_name) {
+        string txt(config);
+        txt.replace(txt.find("%LIBRARY%"), strlen("%LIBRARY%"), string(lib_name));
+        return (txt);
+    }
+
+    /// Configuration Manager (used in tests)
+    NakedNetconfCfgMgr cfg_mgr_;
+};
+
+// This test verifies if an empty config is handled properly. In practice such
+// a config makes little sense, but perhaps it's ok for a default deployment.
+TEST_F(NetconfParserTest, configParseEmpty) {
+    configParse(NETCONF_CONFIGS[0], 0);
+
+    NetconfConfigPtr ctx = cfg_mgr_.getNetconfConfig();
+    ASSERT_TRUE(ctx);
+    ASSERT_TRUE(ctx->getCfgServersMap());
+    EXPECT_EQ(0, ctx->getCfgServersMap()->size());
+}
+
+// This test verifies if a config with only globals is handled properly.
+TEST_F(NetconfParserTest, configParseGlobalOnly) {
+    configParse(NETCONF_CONFIGS[1], 0);
+
+    NetconfConfigPtr ctx = cfg_mgr_.getNetconfConfig();
+    ASSERT_TRUE(ctx);
+    ASSERT_TRUE(ctx->getCfgServersMap());
+    EXPECT_EQ(0, ctx->getCfgServersMap()->size());
+    ConstElementPtr globals = ctx->getConfiguredGlobals();
+    ASSERT_TRUE(globals);
+    string expected = "{ "
+        "\"boot-update\": false, "
+        "\"subscribe-changes\": false, "
+        "\"validate-changes\": false }";
+    EXPECT_EQ(expected, globals->str());
+}
+
+// Tests if an empty (i.e. without a control socket) can be configured.
+// Note that the syntax required the server map to not be really empty.
+TEST_F(NetconfParserTest, configParseEmptyCfgServer) {
+    configParse(NETCONF_CONFIGS[8], 0);
+
+    NetconfConfigPtr ctx = cfg_mgr_.getNetconfConfig();
+    ASSERT_TRUE(ctx);
+    ASSERT_TRUE(ctx->getCfgServersMap());
+    EXPECT_EQ(1, ctx->getCfgServersMap()->size());
+    ASSERT_NO_THROW_LOG(ctx->getCfgServersMap()->at("dhcp4"));
+    CfgServerPtr server = ctx->getCfgServersMap()->at("dhcp4");
+    ASSERT_TRUE(server);
+    EXPECT_EQ(KEA_DHCP4_SERVER, server->getModel());
+    // Defaults.
+    EXPECT_TRUE(server->getBootUpdate());
+    EXPECT_TRUE(server->getSubscribeChanges());
+    EXPECT_TRUE(server->getValidateChanges());
+    CfgControlSocketPtr socket = server->getCfgControlSocket();
+    EXPECT_FALSE(socket);
+}
+
+// This tests default values using a server with empty control socket
+// Note that the syntax required the control socket map to not be really empty.
+TEST_F(NetconfParserTest, configParseDefaults) {
+    configParse(NETCONF_CONFIGS[9], 0);
+
+    NetconfConfigPtr ctx = cfg_mgr_.getNetconfConfig();
+    ASSERT_TRUE(ctx);
+    ASSERT_TRUE(ctx->getCfgServersMap());
+    EXPECT_EQ(1, ctx->getCfgServersMap()->size());
+    ASSERT_NO_THROW_LOG(ctx->getCfgServersMap()->at("dhcp4"));
+    CfgServerPtr server = ctx->getCfgServersMap()->at("dhcp4");
+    ASSERT_TRUE(server);
+    EXPECT_EQ(KEA_DHCP4_SERVER, server->getModel());
+    // Globals overwrite defaults.
+    EXPECT_FALSE(server->getBootUpdate());
+    EXPECT_FALSE(server->getSubscribeChanges());
+    EXPECT_FALSE(server->getValidateChanges());
+    CfgControlSocketPtr socket = server->getCfgControlSocket();
+    ASSERT_TRUE(socket);
+
+    // Checking default.
+    EXPECT_EQ(CfgControlSocket::Type::STDOUT, socket->getType());
+    EXPECT_EQ("", socket->getName());
+    EXPECT_EQ("http://127.0.0.1:8000/", socket->getUrl().toText());
+}
+
+// Tests if a single DHCPv4 server can be configured.
+TEST_F(NetconfParserTest, configParseServerDhcp4) {
+    configParse(NETCONF_CONFIGS[2], 0);
+
+    NetconfConfigPtr ctx = cfg_mgr_.getNetconfConfig();
+    ASSERT_TRUE(ctx);
+    ASSERT_TRUE(ctx->getCfgServersMap());
+    EXPECT_EQ(1, ctx->getCfgServersMap()->size());
+    ASSERT_NO_THROW_LOG(ctx->getCfgServersMap()->at("dhcp4"));
+    CfgServerPtr server = ctx->getCfgServersMap()->at("dhcp4");
+    ASSERT_TRUE(server);
+    EXPECT_EQ(KEA_DHCP4_SERVER, server->getModel());
+    // Locals overwrite globals.
+    EXPECT_TRUE(server->getBootUpdate());
+    EXPECT_TRUE(server->getSubscribeChanges());
+    EXPECT_TRUE(server->getValidateChanges());
+    CfgControlSocketPtr socket = server->getCfgControlSocket();
+    ASSERT_TRUE(socket);
+    EXPECT_EQ(CfgControlSocket::Type::STDOUT, socket->getType());
+    EXPECT_EQ("/tmp/socket-v4", socket->getName());
+    EXPECT_EQ("http://127.0.0.1:8000/", socket->getUrl().toText());
+}
+
+// Tests if a single D2 server can be configured.
+TEST_F(NetconfParserTest, configParseServerD2) {
+    configParse(NETCONF_CONFIGS[5], 0);
+
+    NetconfConfigPtr ctx = cfg_mgr_.getNetconfConfig();
+    ASSERT_TRUE(ctx);
+    ASSERT_TRUE(ctx->getCfgServersMap());
+    EXPECT_EQ(1, ctx->getCfgServersMap()->size());
+    ASSERT_NO_THROW_LOG(ctx->getCfgServersMap()->at("d2"));
+    CfgServerPtr server = ctx->getCfgServersMap()->at("d2");
+    ASSERT_TRUE(server);
+    EXPECT_EQ(KEA_DHCP_DDNS, server->getModel());
+    EXPECT_TRUE(server->getBootUpdate());
+    EXPECT_FALSE(server->getSubscribeChanges());
+    EXPECT_TRUE(server->getValidateChanges());
+    CfgControlSocketPtr socket = server->getCfgControlSocket();
+    ASSERT_TRUE(socket);
+    EXPECT_EQ(CfgControlSocket::Type::STDOUT, socket->getType());
+    EXPECT_EQ("/tmp/socket-d2", socket->getName());
+    EXPECT_EQ("http://127.0.0.1:8000/", socket->getUrl().toText());
+}
+
+// Tests if a single DHCPv6 server can be configured.
+TEST_F(NetconfParserTest, configParseServerDhcp6) {
+    configParse(NETCONF_CONFIGS[6], 0);
+
+    NetconfConfigPtr ctx = cfg_mgr_.getNetconfConfig();
+    ASSERT_TRUE(ctx);
+    ASSERT_TRUE(ctx->getCfgServersMap());
+    EXPECT_EQ(1, ctx->getCfgServersMap()->size());
+    ASSERT_NO_THROW_LOG(ctx->getCfgServersMap()->at("dhcp6"));
+    CfgServerPtr server = ctx->getCfgServersMap()->at("dhcp6");
+    ASSERT_TRUE(server);
+    EXPECT_EQ(KEA_DHCP6_SERVER, server->getModel());
+    CfgControlSocketPtr socket = server->getCfgControlSocket();
+    ASSERT_TRUE(socket);
+    EXPECT_EQ(CfgControlSocket::Type::STDOUT, socket->getType());
+    EXPECT_EQ("/tmp/socket-v6", socket->getName());
+    EXPECT_EQ("http://127.0.0.1:8000/", socket->getUrl().toText());
+}
+
+// This tests if all 4 servers can be configured and makes sure the parser
+// doesn't confuse them.
+TEST_F(NetconfParserTest, configParse4Servers) {
+    configParse(NETCONF_CONFIGS[3], 0);
+
+    NetconfConfigPtr ctx = cfg_mgr_.getNetconfConfig();
+    ASSERT_TRUE(ctx);
+    ASSERT_TRUE(ctx->getCfgServersMap());
+    EXPECT_EQ(4, ctx->getCfgServersMap()->size());
+
+    ASSERT_NO_THROW_LOG(ctx->getCfgServersMap()->at("dhcp4"));
+    CfgServerPtr server = ctx->getCfgServersMap()->at("dhcp4");
+    ASSERT_TRUE(server);
+    EXPECT_EQ(KEA_DHCP4_SERVER, server->getModel());
+    EXPECT_TRUE(server->getBootUpdate());
+    EXPECT_TRUE(server->getSubscribeChanges());
+    EXPECT_TRUE(server->getValidateChanges());
+    CfgControlSocketPtr socket = server->getCfgControlSocket();
+    ASSERT_TRUE(socket);
+    EXPECT_EQ(CfgControlSocket::Type::STDOUT, socket->getType());
+    EXPECT_EQ("/tmp/socket-v4", socket->getName());
+    EXPECT_EQ("http://127.0.0.1:8000/", socket->getUrl().toText());
+
+    ASSERT_NO_THROW_LOG(ctx->getCfgServersMap()->at("dhcp6"));
+    server = ctx->getCfgServersMap()->at("dhcp6");
+    ASSERT_TRUE(server);
+    EXPECT_EQ(KEA_DHCP6_SERVER, server->getModel());
+    socket = server->getCfgControlSocket();
+    EXPECT_FALSE(server->getBootUpdate());
+    EXPECT_TRUE(server->getSubscribeChanges());
+    EXPECT_TRUE(server->getValidateChanges());
+    ASSERT_TRUE(socket);
+    EXPECT_EQ(CfgControlSocket::Type::STDOUT, socket->getType());
+    EXPECT_EQ("/tmp/socket-v6", socket->getName());
+    EXPECT_EQ("http://127.0.0.1:8000/", socket->getUrl().toText());
+
+    ASSERT_NO_THROW_LOG(ctx->getCfgServersMap()->at("d2"));
+    server = ctx->getCfgServersMap()->at("d2");
+    ASSERT_TRUE(server);
+    EXPECT_EQ(KEA_DHCP_DDNS, server->getModel());
+    EXPECT_FALSE(server->getBootUpdate());
+    EXPECT_FALSE(server->getSubscribeChanges());
+    EXPECT_TRUE(server->getValidateChanges());
+    socket = server->getCfgControlSocket();
+    ASSERT_TRUE(socket);
+    EXPECT_EQ(CfgControlSocket::Type::STDOUT, socket->getType());
+    EXPECT_EQ("/tmp/socket-d2", socket->getName());
+    EXPECT_EQ("http://127.0.0.1:8000/", socket->getUrl().toText());
+
+    ASSERT_NO_THROW_LOG(ctx->getCfgServersMap()->at("ca"));
+    server = ctx->getCfgServersMap()->at("ca");
+    ASSERT_TRUE(server);
+    EXPECT_EQ(KEA_CTRL_AGENT, server->getModel());
+    EXPECT_FALSE(server->getBootUpdate());
+    EXPECT_TRUE(server->getSubscribeChanges());
+    EXPECT_TRUE(server->getValidateChanges());
+    socket = server->getCfgControlSocket();
+    ASSERT_TRUE(socket);
+    EXPECT_EQ(CfgControlSocket::Type::STDOUT, socket->getType());
+    EXPECT_EQ("/tmp/socket-ca", socket->getName());
+    EXPECT_EQ("http://127.0.0.1:8000/", socket->getUrl().toText());
+
+    // Check unparsing.
+    string expected =  "{\n"
+        "    \"Netconf\": {\n"
+        "        \"boot-update\": false,\n"
+        "        \"managed-servers\": {\n"
+        "            \"dhcp4\": {\n"
+        "                \"model\": \"kea-dhcp4-server\",\n"
+        "                \"boot-update\": true,\n"
+        "                \"subscribe-changes\": true,\n"
+        "                \"validate-changes\": true,\n"
+        "                \"control-socket\": {\n"
+        "                    \"socket-type\": \"stdout\",\n"
+        "                    \"socket-name\": \"/tmp/socket-v4\",\n"
+        "                    \"socket-url\": \"http://127.0.0.1:8000/\"\n"
+        "                }\n"
+        "            },\n"
+        "            \"dhcp6\": {\n"
+        "                \"model\": \"kea-dhcp6-server\",\n"
+        "                \"boot-update\": false,\n"
+        "                \"subscribe-changes\": true,\n"
+        "                \"validate-changes\": true,\n"
+        "                \"control-socket\": {\n"
+        "                    \"socket-type\": \"stdout\",\n"
+        "                    \"socket-name\": \"/tmp/socket-v6\",\n"
+        "                    \"socket-url\": \"http://127.0.0.1:8000/\"\n"
+        "                }\n"
+        "            },\n"
+        "            \"d2\": {\n"
+        "                \"model\": \"kea-dhcp-ddns\",\n"
+        "                \"boot-update\": false,\n"
+        "                \"subscribe-changes\": false,\n"
+        "                \"validate-changes\": true,\n"
+        "                \"control-socket\": {\n"
+        "                    \"socket-type\": \"stdout\",\n"
+        "                    \"socket-name\": \"/tmp/socket-d2\",\n"
+        "                    \"socket-url\": \"http://127.0.0.1:8000/\"\n"
+        "                }\n"
+        "            },\n"
+        "            \"ca\": {\n"
+        "                \"model\": \"kea-ctrl-agent\",\n"
+        "                \"boot-update\": false,\n"
+        "                \"subscribe-changes\": true,\n"
+        "                \"validate-changes\": true,\n"
+        "                \"control-socket\": {\n"
+        "                    \"socket-type\": \"stdout\",\n"
+        "                    \"socket-name\": \"/tmp/socket-ca\",\n"
+        "                    \"socket-url\": \"http://127.0.0.1:8000/\"\n"
+        "                }\n"
+        "            }\n"
+        "        },\n"
+        "        \"hooks-libraries\": [ ]\n"
+        "    }\n"
+        "}";
+    isc::test::runToElementTest<NetconfConfig>(expected, *ctx);
+}
+
+// Tests the handling of invalid socket URL.
+TEST_F(NetconfParserTest, configParseInvalidSocketUrl) {
+    configParse(NETCONF_CONFIGS[11], 1);
+    int rcode = 0;
+    string expected =
+        "\"invalid control socket url: url bad lacks http or https scheme "
+        "'bad' (<string>:5:31)\"";
+    EXPECT_EQ(expected, parseAnswer(rcode, answer_)->str());
+}
+
+// This test checks that the config file with hook library specified can be
+// loaded. This one is a bit tricky, because the parser sanity checks the lib
+// name. In particular, it checks if such a library exists. Therefore we
+// can't use NETCONF_CONFIGS[4] as is, but need to run it through path replacer.
+TEST_F(NetconfParserTest, configParseHooks) {
+    // Create the configuration with proper lib path.
+    string cfg = pathReplacer(NETCONF_CONFIGS[4], BASIC_CALLOUT_LIBRARY);
+    // The configuration should be successful.
+    configParse(cfg.c_str(), 0);
+
+    // The context now should have the library specified.
+    NetconfConfigPtr ctx = cfg_mgr_.getNetconfConfig();
+    const HookLibsCollection libs = ctx->getHooksConfig().get();
+    ASSERT_EQ(1, libs.size());
+    EXPECT_EQ(string(BASIC_CALLOUT_LIBRARY), libs[0].first);
+    ASSERT_TRUE(libs[0].second);
+    EXPECT_EQ("{ \"param1\": \"foo\" }", libs[0].second->str());
+}
+
+// This test checks comments.
+TEST_F(NetconfParserTest, comments) {
+    configParse(NETCONF_CONFIGS[7], 0);
+    NetconfConfigPtr netconf_ctx = cfg_mgr_.getNetconfConfig();
+    ASSERT_TRUE(netconf_ctx);
+
+    // Check global user context.
+    ConstElementPtr ctx = netconf_ctx->getContext();
+    ASSERT_TRUE(ctx);
+    ASSERT_EQ(1, ctx->size());
+    ASSERT_TRUE(ctx->get("comment"));
+    EXPECT_EQ("\"Indirect comment\"", ctx->get("comment")->str());
+
+    // There is a DHCP4 server.
+    ASSERT_TRUE(netconf_ctx->getCfgServersMap());
+    ASSERT_NO_THROW_LOG(netconf_ctx->getCfgServersMap()->at("dhcp4"));
+    CfgServerPtr server = netconf_ctx->getCfgServersMap()->at("dhcp4");
+    ASSERT_TRUE(server);
+
+    // Check DHCP4 server user context.
+    ConstElementPtr ctx4 = server->getContext();
+    ASSERT_TRUE(ctx4);
+    ASSERT_EQ(1, ctx4->size());
+    ASSERT_TRUE(ctx4->get("comment"));
+    EXPECT_EQ("\"dhcp4 server\"", ctx4->get("comment")->str());
+
+    // There is a DHCP6 server.
+    ASSERT_NO_THROW_LOG(netconf_ctx->getCfgServersMap()->at("dhcp6"));
+    server = netconf_ctx->getCfgServersMap()->at("dhcp6");
+    ASSERT_TRUE(server);
+
+    // There is a DHCP6 control socket.
+    CfgControlSocketPtr socket = server->getCfgControlSocket();
+    ASSERT_TRUE(socket);
+
+    // Check DHCP6 control socket user context.
+    ConstElementPtr ctx6 = socket->getContext();
+    ASSERT_TRUE(ctx6);
+    ASSERT_EQ(1, ctx6->size());
+    ASSERT_TRUE(ctx6->get("version"));
+    EXPECT_EQ("1", ctx6->get("version")->str());
+}
+
+}  // namespace
diff --git a/src/bin/netconf/tests/netconf_controller_unittests.cc b/src/bin/netconf/tests/netconf_controller_unittests.cc
new file mode 100644
index 0000000..dd4cb85
--- /dev/null
+++ b/src/bin/netconf/tests/netconf_controller_unittests.cc
@@ -0,0 +1,194 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <asiolink/testutils/timed_signal.h>
+#include <netconf/netconf_controller.h>
+#include <netconf/netconf_process.h>
+#include <cc/data.h>
+#include <process/testutils/d_test_stubs.h>
+#include <testutils/gtest_utils.h>
+
+#include <boost/pointer_cast.hpp>
+
+#include <sstream>
+
+using namespace isc::asiolink::test;
+using namespace isc::netconf;
+using namespace isc::data;
+using namespace isc::http;
+using namespace isc::process;
+using namespace boost::posix_time;
+using namespace std;
+
+namespace {
+
+/// @brief Valid Netconf Config used in tests.
+const char* valid_netconf_config =
+    "{"
+    "  \"boot-update\": false,"
+    "  \"subscribe-changes\": false,"
+    "  \"managed-servers\": {"
+    "    \"dhcp4\": {"
+    "      \"control-socket\": {"
+    "        \"socket-type\": \"unix\","
+    "        \"socket-name\": \"/first/dhcp4/socket\""
+    "      }"
+    "    },"
+    "    \"dhcp6\": {"
+    "      \"control-socket\": {"
+    "        \"socket-type\": \"unix\","
+    "        \"socket-name\": \"/first/dhcp6/socket\""
+    "      }"
+    "    }"
+    "  }"
+    "}";
+
+/// @brief test fixture class for testing NetconfController class.
+///
+/// This class derives from DControllerTest and wraps NetconfController. Much
+/// of the underlying functionality is in the DControllerBase class which
+/// has extensive set of unit tests that are independent from Netconf.
+class NetconfControllerTest : public DControllerTest {
+public:
+
+    /// @brief Constructor.
+    NetconfControllerTest()
+        : DControllerTest(NetconfController::instance) {
+    }
+
+    /// @brief Returns pointer to NetconfProcess instance.
+    NetconfProcessPtr getNetconfProcess() {
+        return (boost::dynamic_pointer_cast<NetconfProcess>(getProcess()));
+    }
+
+    /// @brief Returns pointer to NetconfCfgMgr instance for a process.
+    NetconfCfgMgrPtr getNetconfCfgMgr() {
+        NetconfCfgMgrPtr p;
+        if (getNetconfProcess()) {
+            p = getNetconfProcess()->getNetconfCfgMgr();
+        }
+        return (p);
+    }
+
+    /// @brief Returns a pointer to the configuration context.
+    NetconfConfigPtr getNetconfConfig() {
+        NetconfConfigPtr p;
+        if (getNetconfCfgMgr()) {
+            p = getNetconfCfgMgr()->getNetconfConfig();
+        }
+        return (p);
+    }
+};
+
+// Basic Controller instantiation testing.
+// Verifies that the controller singleton gets created and that the
+// basic derivation from the base class is intact.
+TEST_F(NetconfControllerTest, basicInstanceTesting) {
+    // Verify the singleton instance can be fetched and that
+    // it has the correct type.
+    DControllerBasePtr& controller = DControllerTest::getController();
+    ASSERT_TRUE(controller);
+    ASSERT_NO_THROW_LOG(boost::dynamic_pointer_cast<NetconfController>(controller));
+
+    // Verify that controller's app name is correct.
+    EXPECT_TRUE(checkAppName(NetconfController::netconf_app_name_));
+
+    // Verify that controller's bin name is correct.
+    EXPECT_TRUE(checkBinName(NetconfController::netconf_bin_name_));
+
+    // Verify that controller's IOService exists.
+    EXPECT_TRUE(checkIOService());
+
+    // Verify that the Process does NOT exist.
+    EXPECT_FALSE(checkProcess());
+}
+
+
+// Tests basic command line processing.
+// Verifies that:
+// 1. Standard command line options are supported.
+// 2. Invalid options are detected.
+TEST_F(NetconfControllerTest, commandLineArgs) {
+    char* argv[] = { const_cast<char*>("progName"),
+                     const_cast<char*>("-c"),
+                     const_cast<char*>(DControllerTest::CFG_TEST_FILE),
+                     const_cast<char*>("-d") };
+    int argc = 4;
+
+    // Verify that verbose flag is false initially.
+    EXPECT_TRUE(checkVerbose(false));
+
+    // Verify that standard options can be parsed without error.
+    EXPECT_NO_THROW(parseArgs(argc, argv));
+
+    // Verify that verbose flag is true.
+    EXPECT_TRUE(checkVerbose(true));
+
+    // Verify configuration file name is correct.
+    EXPECT_TRUE(checkConfigFileName(DControllerTest::CFG_TEST_FILE));
+
+    // Verify that an unknown option is detected.
+    char* argv2[] = { const_cast<char*>("progName"),
+                      const_cast<char*>("-x") };
+    argc = 2;
+    EXPECT_THROW(parseArgs(argc, argv2), InvalidUsage);
+}
+
+// Tests application process creation and initialization.
+// Verifies that the process can be successfully created and initialized.
+TEST_F(NetconfControllerTest, initProcessTesting) {
+    ASSERT_NO_THROW_LOG(initProcess());
+    EXPECT_TRUE(checkProcess());
+}
+
+// Tests launch and normal shutdown (stand alone mode).
+// This creates an interval timer to generate a normal shutdown and then
+// launches with a valid, stand-alone command line and no simulated errors.
+TEST_F(NetconfControllerTest, launchNormalShutdown) {
+    // Write valid_netconf_config and then run launch() for 200 ms.
+    time_duration elapsed_time;
+    runWithConfig(valid_netconf_config, 200, elapsed_time);
+
+    // Give a generous margin to accommodate slower test environs.
+    EXPECT_TRUE(elapsed_time.total_milliseconds() >= 100 &&
+                elapsed_time.total_milliseconds() <= 500);
+}
+
+// Tests that the SIGINT triggers a normal shutdown.
+TEST_F(NetconfControllerTest, sigintShutdown) {
+    // Setup to raise SIGINT in 1 ms.
+    TimedSignal sighup(*getIOService(), SIGINT, 1);
+
+    // Write valid_netconf_config and then run launch() for a maximum
+    // of 500 ms.
+    time_duration elapsed_time;
+    runWithConfig(valid_netconf_config, 500, elapsed_time);
+
+    // Signaled shutdown should make our elapsed time much smaller than
+    // the maximum run time.  Give generous margin to accommodate slow
+    // test environs.
+    EXPECT_TRUE(elapsed_time.total_milliseconds() < 300);
+}
+
+// Tests that the SIGTERM triggers a normal shutdown.
+TEST_F(NetconfControllerTest, sigtermShutdown) {
+    // Setup to raise SIGTERM in 1 ms.
+    TimedSignal sighup(*getIOService(), SIGTERM, 1);
+
+    // Write valid_netconf_config and then run launch() for a maximum
+    // of 500 ms.
+    time_duration elapsed_time;
+    runWithConfig(valid_netconf_config, 500, elapsed_time);
+
+    // Signaled shutdown should make our elapsed time much smaller than
+    // the maximum run time.  Give generous margin to accommodate slow
+    // test environs.
+    EXPECT_TRUE(elapsed_time.total_milliseconds() < 300);
+}
+
+}
diff --git a/src/bin/netconf/tests/netconf_process_unittests.cc b/src/bin/netconf/tests/netconf_process_unittests.cc
new file mode 100644
index 0000000..08d2d3c
--- /dev/null
+++ b/src/bin/netconf/tests/netconf_process_unittests.cc
@@ -0,0 +1,92 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <netconf/netconf_cfg_mgr.h>
+#include <netconf/netconf_process.h>
+#include <asiolink/interval_timer.h>
+#include <asiolink/io_service.h>
+#include <process/testutils/d_test_stubs.h>
+#include <testutils/gtest_utils.h>
+
+#include <boost/date_time/posix_time/posix_time.hpp>
+
+#include <gtest/gtest.h>
+
+#include <functional>
+
+using namespace boost::posix_time;
+using namespace isc;
+using namespace isc::netconf;
+using namespace isc::asiolink;
+using namespace isc::process;
+
+namespace {
+
+/// @brief NetconfProcess test fixture class.
+class NetconfProcessTest : public NetconfProcess, public ::testing::Test  {
+public:
+    /// @brief Constructor
+    NetconfProcessTest() :
+        NetconfProcess("netconf-test",
+                       IOServicePtr(new isc::asiolink::IOService())) {
+        NetconfConfigPtr ctx = getNetconfCfgMgr()->getNetconfConfig();
+    }
+
+    /// @brief Destructor
+    virtual ~NetconfProcessTest() {
+    }
+
+    /// @brief Callback that will invoke shutdown method.
+    void genShutdownCallback() {
+        shutdown(isc::data::ConstElementPtr());
+    }
+};
+
+// Test construction of the NetconfProcess object.
+TEST(NetconfProcess, construction) {
+    // Verify that the constructor will fail if given an empty
+    // io service.
+    IOServicePtr lcl_io_service;
+    EXPECT_THROW(NetconfProcess("TestProcess", lcl_io_service),
+                 DProcessBaseError);
+
+    // Verify that the constructor succeeds with a valid io_service
+    lcl_io_service.reset(new IOService());
+    ASSERT_NO_THROW_LOG(NetconfProcess("TestProcess", lcl_io_service));
+
+    // Verify tha the configuration is accessible after construction.
+    NetconfProcess netconf_process("TestProcess", lcl_io_service);
+    NetconfCfgMgrPtr cfg_mgr = netconf_process.getNetconfCfgMgr();
+    ASSERT_TRUE(cfg_mgr);
+}
+
+// Verifies that en external call to shutdown causes the run method to
+// exit gracefully.
+TEST_F(NetconfProcessTest, shutdown) {
+    // Use an asiolink IntervalTimer and callback to generate the
+    // shutdown invocation. (Note IntervalTimer setup is in milliseconds).
+    IntervalTimer timer(*getIoService());
+    timer.setup(std::bind(&NetconfProcessTest::genShutdownCallback, this),
+                200);
+
+    // Record start time, and invoke run().
+    ptime start = microsec_clock::universal_time();
+    EXPECT_NO_THROW(run());
+
+    // Record stop time.
+    ptime stop = microsec_clock::universal_time();
+
+    // Verify that duration of the run invocation is the same as the
+    // timer duration.  This demonstrates that the shutdown was driven
+    // by an io_service event and callback.
+    time_duration elapsed = stop - start;
+    EXPECT_TRUE(elapsed.total_milliseconds() >= 100 &&
+                elapsed.total_milliseconds() <= 400);
+}
+
+}
diff --git a/src/bin/netconf/tests/netconf_unittests.cc b/src/bin/netconf/tests/netconf_unittests.cc
new file mode 100644
index 0000000..bd9be00
--- /dev/null
+++ b/src/bin/netconf/tests/netconf_unittests.cc
@@ -0,0 +1,1212 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <netconf/netconf.h>
+#include <netconf/netconf_process.h>
+#include <netconf/parser_context.h>
+#include <netconf/simple_parser.h>
+#include <netconf/unix_control_socket.h>
+#include <asiolink/asio_wrapper.h>
+#include <asiolink/interval_timer.h>
+#include <asiolink/io_service.h>
+#include <cc/command_interpreter.h>
+#include <yang/yang_models.h>
+#include <yang/yang_revisions.h>
+#include <yang/tests/sysrepo_setup.h>
+#include <yang/translator_config.h>
+#include <yang/testutils/translator_test.h>
+#include <testutils/log_utils.h>
+#include <testutils/threaded_test.h>
+#include <testutils/sandbox.h>
+
+#include <gtest/gtest.h>
+
+#include <sstream>
+#include <thread>
+
+using namespace std;
+using namespace isc;
+using namespace isc::netconf;
+using namespace isc::asiolink;
+using namespace isc::config;
+using namespace isc::data;
+using namespace isc::http;
+using namespace isc::test;
+using namespace isc::yang;
+using namespace isc::yang::test;
+using namespace sysrepo;
+
+using isc::yang::test::SysrepoSetup;
+
+namespace {
+
+/// @brief Test unix socket file name.
+const string TEST_SOCKET = "test-socket";
+
+/// @brief Type definition for the pointer to Thread objects.
+typedef boost::shared_ptr<thread> ThreadPtr;
+
+/// @brief Test version of the NetconfAgent class.
+class NakedNetconfAgent : public NetconfAgent {
+public:
+    /// @brief Constructor.
+    NakedNetconfAgent() {
+    }
+
+    /// @brief Destructor.
+    virtual ~NakedNetconfAgent() {
+    }
+
+    /// Export protected methods and fields.
+    using NetconfAgent::keaConfig;
+    using NetconfAgent::initSysrepo;
+    using NetconfAgent::checkModule;
+    using NetconfAgent::checkModules;
+    using NetconfAgent::yangConfig;
+    using NetconfAgent::subscribeConfig;
+    using NetconfAgent::conn_;
+    using NetconfAgent::startup_sess_;
+    using NetconfAgent::running_sess_;
+    using NetconfAgent::modules_;
+    using NetconfAgent::subscriptions_;
+};
+
+/// @brief Type definition for the pointer to NakedNetconfAgent objects.
+typedef boost::shared_ptr<NakedNetconfAgent> NakedNetconfAgentPtr;
+
+/// @brief Clear YANG configuration.
+///
+/// @param agent The naked netconf agent (fr its startup datastore session).
+void clearYang(NakedNetconfAgentPtr agent) {
+    if (agent && (agent->startup_sess_)) {
+        string xpath = "/kea-dhcp4-server:config";
+        EXPECT_NO_THROW(agent->startup_sess_->delete_item(xpath.c_str()));
+        EXPECT_NO_THROW(agent->startup_sess_->apply_changes());
+    }
+}
+
+
+// Empirically the requested subnets have sometimes returned in decreasing
+// order of subnet ID. To avoid flaky test failures, sort them before
+// comparing.
+void sortSubnets(ConstElementPtr const& map) {
+    boost::dynamic_pointer_cast<ListElement>(
+        boost::const_pointer_cast<Element>(
+            map->get("arguments")->get("Dhcp4")->get("subnet4")))
+        ->sort("id");
+}
+
+/// @brief Test fixture class for netconf agent.
+class NetconfAgentTest : public ThreadedTest {
+public:
+    isc::test::Sandbox sandbox;
+
+    void SetUp() override {
+        SysrepoSetup::cleanSharedMemory();
+        removeUnixSocketFile();
+        io_service_.reset(new IOService());
+        agent_.reset(new NakedNetconfAgent());
+    }
+
+    void TearDown() override {
+        if (thread_) {
+            thread_->join();
+            thread_.reset();
+        }
+        // io_service must be stopped after the thread returns,
+        // otherwise the thread may never return if it is
+        // waiting for the completion of some asynchronous tasks.
+        io_service_->stop();
+        io_service_.reset();
+        if (agent_) {
+            clearYang(agent_);
+            agent_->clear();
+        }
+        agent_.reset();
+        requests_.clear();
+        responses_.clear();
+        removeUnixSocketFile();
+        SysrepoSetup::cleanSharedMemory();
+    }
+
+    /// @brief Returns socket file path.
+    ///
+    /// If the KEA_SOCKET_TEST_DIR environment variable is specified, the
+    /// socket file is created in the location pointed to by this variable.
+    /// Otherwise, it is created in the build directory.
+    string unixSocketFilePath() {
+        std::string socket_path;
+        const char* env = getenv("KEA_SOCKET_TEST_DIR");
+        if (env) {
+            socket_path = std::string(env) + "/test-socket";
+        } else {
+            socket_path = sandbox.join("test-socket");
+        }
+        return (socket_path);
+    }
+
+    /// @brief Removes unix socket descriptor.
+    void removeUnixSocketFile() {
+        static_cast<void>(remove(unixSocketFilePath().c_str()));
+    }
+
+    /// @brief Create configuration of the control socket.
+    ///
+    /// @return a pointer to a control socket configuration.
+    CfgControlSocketPtr createCfgControlSocket() {
+        CfgControlSocketPtr cfg;
+        cfg.reset(new CfgControlSocket(CfgControlSocket::Type::UNIX,
+                                       unixSocketFilePath(),
+                                       Url("http://127.0.0.1:8000/")));
+        return (cfg);
+    }
+
+    /// @brief Fake server (returns OK answer).
+    void fakeServer();
+
+    /// @brief IOService object.
+    IOServicePtr io_service_;
+
+    /// @brief Test netconf agent.
+    NakedNetconfAgentPtr agent_;
+
+    /// @brief Request list.
+    vector<string> requests_;
+
+    /// @brief Response list.
+    vector<string> responses_;
+};
+
+/// @brief Special test fixture for logging tests.
+class NetconfAgentLogTest : public dhcp::test::LogContentTest {
+public:
+    /// @brief Constructor.
+    NetconfAgentLogTest()
+        : finished_(false),
+          io_service_(new IOService()),
+          thread_(),
+          agent_(new NakedNetconfAgent) {
+    }
+
+    /// @brief Destructor.
+    virtual ~NetconfAgentLogTest() {
+        if (agent_) {
+            clearYang(agent_);
+            agent_->clear();
+        }
+        agent_.reset();
+        // io_service must be stopped to make the thread to return.
+        io_service_->stop();
+        if (thread_) {
+            thread_->join();
+            thread_.reset();
+        }
+        io_service_.reset();
+    }
+
+    /// @brief Default change callback (print changes and return OK).
+    sr_error_t callback(sysrepo::S_Session sess,
+                        const char* module_name,
+                        const char* /* xpath */,
+                        sr_event_t /* event */,
+                        uint32_t /* request_id */) {
+        NetconfAgent::logChanges(sess, module_name);
+        finished_ = true;
+        return (SR_ERR_OK);
+    }
+
+    /// @brief logChanges is called in another thread so we have to wait for it.
+    ///
+    /// @todo The better way to get notified and get rid of the sleep is with a
+    /// conditional variable.
+    void waitForCallback() {
+        while (!finished_) {
+            usleep(1000);
+        }
+    }
+
+    /// @brief To know when the callback was called.
+    std::atomic<bool> finished_;
+
+    /// @brief IOService object.
+    IOServicePtr io_service_;
+
+    /// @brief Pointer to server thread.
+    ThreadPtr thread_;
+
+    /// @brief Test netconf agent.
+    NakedNetconfAgentPtr agent_;
+};
+
+/// @brief Fake server (returns OK answer).
+void
+NetconfAgentTest::fakeServer() {
+    // Acceptor.
+    boost::asio::local::stream_protocol::acceptor
+        acceptor(io_service_->get_io_service());
+    EXPECT_NO_THROW(acceptor.open());
+    boost::asio::local::stream_protocol::endpoint
+        endpoint(unixSocketFilePath());
+    boost::asio::socket_base::reuse_address option(true);
+    acceptor.set_option(option);
+    EXPECT_NO_THROW(acceptor.bind(endpoint));
+    EXPECT_NO_THROW(acceptor.listen());
+    boost::asio::local::stream_protocol::socket
+        socket(io_service_->get_io_service());
+
+    // Ready.
+    signalReady();
+
+    // Timeout.
+    bool timeout = false;
+    IntervalTimer timer(*io_service_);
+    timer.setup([&timeout]() {
+            timeout = true;
+            FAIL() << "timeout";
+        }, 1500, IntervalTimer::ONE_SHOT);
+
+    // Accept.
+    boost::system::error_code ec;
+    bool accepted = false;
+    acceptor.async_accept(socket,
+                          [&ec, &accepted]
+                          (const boost::system::error_code& error) {
+                              ec = error;
+                              accepted = true;
+                          });
+    while (!accepted && !timeout) {
+        io_service_->run_one();
+    }
+    ASSERT_FALSE(ec);
+
+    // Receive command.
+    string rbuf(1024, ' ');
+    size_t received = 0;
+    socket.async_receive(boost::asio::buffer(&rbuf[0], rbuf.size()),
+                         [&ec, &received]
+                         (const boost::system::error_code& error, size_t cnt) {
+                             ec = error;
+                             received = cnt;
+                         });
+    while (!received && !timeout) {
+        io_service_->run_one();
+    }
+    ASSERT_FALSE(ec);
+    rbuf.resize(received);
+    requests_.push_back(rbuf);
+    ConstElementPtr json;
+    EXPECT_NO_THROW(json = Element::fromJSON(rbuf));
+    EXPECT_TRUE(json);
+    string command;
+    ConstElementPtr config;
+    if (json) {
+        ConstElementPtr arg;
+        EXPECT_NO_THROW(command = parseCommand(arg, json));
+        if (command == "config-get") {
+            config = Element::fromJSON("{ \"comment\": \"empty\" }");
+        }
+    }
+
+    // Send answer.
+    string sbuf = createAnswer(CONTROL_RESULT_SUCCESS, config)->str();
+    responses_.push_back(sbuf);
+    size_t sent = 0;
+    socket.async_send(boost::asio::buffer(&sbuf[0], sbuf.size()),
+                      [&ec, &sent]
+                      (const boost::system::error_code& error, size_t cnt) {
+                          ec = error;
+                          sent = cnt;
+                      });
+    while (!sent && !timeout) {
+        io_service_->run_one();
+    }
+    ASSERT_FALSE(ec);
+
+    // Stop timer.
+    timer.cancel();
+
+    // Close socket and acceptor.
+    if (socket.is_open()) {
+        EXPECT_NO_THROW(socket.close());
+    }
+    EXPECT_NO_THROW(acceptor.close());
+    // Removed the socket file so it can be called again immediately.
+    removeUnixSocketFile();
+
+    /// Finished.
+    EXPECT_FALSE(timeout);
+    EXPECT_TRUE(accepted);
+    EXPECT_TRUE(received);
+    EXPECT_TRUE(sent);
+    EXPECT_EQ(sent, sbuf.size());
+
+    // signalStopped can't be called here because of the 2 runs for update.
+}
+
+// Verifies that the initSysrepo method opens sysrepo connection and sessions.
+TEST_F(NetconfAgentTest, initSysrepo) {
+    EXPECT_NO_THROW(agent_->initSysrepo());
+    EXPECT_TRUE(agent_->conn_);
+    EXPECT_TRUE(agent_->startup_sess_);
+    EXPECT_TRUE(agent_->running_sess_);
+    EXPECT_EQ(0, agent_->subscriptions_.size());
+    EXPECT_LE(16, agent_->modules_.size());
+}
+
+// Verifies that the checkModule method emits expected errors.
+TEST_F(NetconfAgentLogTest, checkModule) {
+    // keatest-module should not be in YANG_REVISIONS.
+    EXPECT_EQ(0, YANG_REVISIONS.count("keatest-module"));
+    // But kea-dhcp[46]-server must be in.
+    ASSERT_EQ(1, YANG_REVISIONS.count("kea-dhcp4-server"));
+    ASSERT_EQ(1, YANG_REVISIONS.count("kea-dhcp6-server"));
+
+    // kea-dhcp[46]-server should be available.
+    EXPECT_NO_THROW(agent_->initSysrepo());
+    EXPECT_EQ(1, agent_->modules_.count("kea-dhcp4-server"));
+    EXPECT_EQ(1, agent_->modules_.count("kea-dhcp6-server"));
+    EXPECT_TRUE(agent_->checkModule("kea-dhcp4-server"));
+    EXPECT_TRUE(agent_->checkModule("kea-dhcp6-server"));
+
+    // Unknown module should emit a missing error.
+    EXPECT_EQ(0, agent_->modules_.count("does-not-exist"));
+    EXPECT_FALSE(agent_->checkModule("does-not-exist"));
+    addString("NETCONF_MODULE_MISSING_ERR Missing essential module "
+              "does-not-exist in sysrepo");
+
+    // Patch the found revision to get a revision error.
+    const string& module = "kea-dhcp4-server";
+    auto it4 = agent_->modules_.find(module);
+    if (it4 != agent_->modules_.end()) {
+        agent_->modules_.erase(it4);
+    }
+    // The module was written far after 20180714...
+    const string& bad_revision = "2018-07-14";
+    agent_->modules_.insert(make_pair(module, bad_revision));
+    EXPECT_FALSE(agent_->checkModule(module));
+    ostringstream msg;
+    msg << "NETCONF_MODULE_REVISION_ERR Essential module " << module
+        << " does NOT have the right revision: expected "
+        << YANG_REVISIONS.at(module) << ", got " << bad_revision;
+    addString(msg.str());
+
+    EXPECT_TRUE(checkFile());
+}
+
+// Verifies that the checkModules method emits expected warnings.
+TEST_F(NetconfAgentLogTest, checkModules) {
+    // kea-dhcp[46]-server must be in YANG_REVISIONS.
+    ASSERT_EQ(1, YANG_REVISIONS.count("kea-dhcp4-server"));
+    ASSERT_EQ(1, YANG_REVISIONS.count("kea-dhcp6-server"));
+
+    // kea-dhcp[46]-server should be available.
+    EXPECT_NO_THROW(agent_->initSysrepo());
+    EXPECT_EQ(1, agent_->modules_.count("kea-dhcp4-server"));
+    EXPECT_EQ(1, agent_->modules_.count("kea-dhcp6-server"));
+
+    // Run checkModules but it will be indirectly checked as
+    // emitting nothing.
+    ASSERT_NO_THROW_LOG(agent_->checkModules());
+
+    // Remove kea-dhcp6-server.
+    const string& module = "kea-dhcp6-server";
+    auto it6 = agent_->modules_.find(module);
+    if (it6 != agent_->modules_.end()) {
+        agent_->modules_.erase(it6);
+    }
+    ASSERT_NO_THROW_LOG(agent_->checkModules());
+    ostringstream mmsg;
+    mmsg << "NETCONF_MODULE_MISSING_WARN Missing module " << module
+         << " in sysrepo";
+    addString(mmsg.str());
+
+    // Add it back with a bad revision.
+    const string& bad_revision = "2018-07-14";
+    agent_->modules_.insert(make_pair(module, bad_revision));
+    ASSERT_NO_THROW_LOG(agent_->checkModules());
+    ostringstream rmsg;
+    rmsg << "NETCONF_MODULE_REVISION_WARN Module " << module
+         << " does NOT have the right revision: expected "
+         << YANG_REVISIONS.at(module) << ", got " << bad_revision;
+    addString(rmsg.str());
+
+    EXPECT_TRUE(checkFile());
+}
+
+// Verifies that the logChanges method handles correctly changes.
+TEST_F(NetconfAgentLogTest, logChanges) {
+    // Initial YANG configuration.
+    const YRTree tree0 = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/id",
+          "1", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/subnet",
+          "10.0.0.0/24", SR_STRING_T, true },
+        { "/kea-dhcp4-server:config/subnet4[id='2']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/id",
+          "2", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/subnet",
+          "10.0.2.0/24", SR_STRING_T, true }
+    });
+    // Load initial YANG configuration.
+    ASSERT_NO_THROW_LOG(agent_->initSysrepo());
+    YangRepr repr(KEA_DHCP4_SERVER);
+    ASSERT_NO_THROW_LOG(repr.set(tree0, agent_->startup_sess_));
+    EXPECT_NO_THROW(agent_->startup_sess_->apply_changes());
+
+    // Subscribe configuration changes.
+    S_Subscribe subs(new Subscribe(agent_->running_sess_));
+    auto cb = [&](sysrepo::S_Session sess, const char* module_name,
+                  const char* xpath, sr_event_t event, uint32_t request_id) {
+        return callback(sess, module_name, xpath, event, request_id);
+    };
+    EXPECT_NO_THROW(subs->module_change_subscribe(KEA_DHCP4_SERVER.c_str(), cb,
+                                                  nullptr, 0,
+                                                  SR_SUBSCR_DONE_ONLY));
+    thread_.reset(new thread([this]() { io_service_->run(); }));
+
+    // Change configuration (subnet #1 moved from 10.0.0.0/24 to 10.0.1/0/24).
+    const YRTree tree1 = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/id",
+          "1", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/subnet",
+          "10.0.1.0/24", SR_STRING_T, true }, // The change is here!
+        { "/kea-dhcp4-server:config/subnet4[id='2']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/id",
+          "2", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/subnet",
+          "10.0.2.0/24", SR_STRING_T, true }
+    });
+    EXPECT_NO_THROW(repr.set(tree1, agent_->running_sess_));
+    EXPECT_NO_THROW(agent_->running_sess_->apply_changes());
+
+    // Check that the debug output was correct.
+    addString(
+        "NETCONF_CONFIG_CHANGED_DETAIL YANG configuration changed: created: "
+        "/kea-dhcp4-server:config/subnet4[id='2'] (list instance)");
+    addString("NETCONF_CONFIG_CHANGED_DETAIL YANG configuration changed: "
+              "created: /kea-dhcp4-server:config/subnet4[id='2']/id = 2");
+    addString(
+        "NETCONF_CONFIG_CHANGED_DETAIL YANG configuration changed: created: "
+        "/kea-dhcp4-server:config/subnet4[id='2']/subnet = 10.0.2.0/24");
+    addString(
+        "NETCONF_CONFIG_CHANGED_DETAIL YANG configuration changed: created: "
+        "/kea-dhcp4-server:config/subnet4[id='2']/relay (container)");
+
+    waitForCallback();
+
+    EXPECT_TRUE(checkFile());
+}
+
+// Verifies that the logChanges method handles correctly changes.
+// Instead of the simple modified of the previous test, now there will
+// deleted, created and moved.
+TEST_F(NetconfAgentLogTest, logChanges2) {
+    // Initial YANG configuration.
+    const YRTree tree0 = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/id",
+          "1", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/subnet",
+          "10.0.0.0/24", SR_STRING_T, true },
+        { "/kea-dhcp4-server:config/subnet4[id='2']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/id",
+          "2", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/subnet",
+          "10.0.2.0/24", SR_STRING_T, true }
+    });
+    // Load initial YANG configuration.
+    ASSERT_NO_THROW_LOG(agent_->initSysrepo());
+    YangRepr repr(KEA_DHCP4_SERVER);
+    ASSERT_NO_THROW_LOG(repr.set(tree0, agent_->startup_sess_));
+    EXPECT_NO_THROW(agent_->startup_sess_->apply_changes());
+
+    // Subscribe configuration changes.
+    S_Subscribe subs(new Subscribe(agent_->running_sess_));
+    auto cb = [&](sysrepo::S_Session sess, const char* module_name,
+                  const char* xpath, sr_event_t event, uint32_t request_id) {
+        return callback(sess, module_name, xpath, event, request_id);
+    };
+    EXPECT_NO_THROW(subs->module_change_subscribe(KEA_DHCP4_SERVER.c_str(), cb,
+                                                  nullptr, 0,
+                                                  SR_SUBSCR_DONE_ONLY));
+    thread_.reset(new thread([this]() { io_service_->run(); }));
+
+    // Change configuration (subnet #1 moved to #10).
+    string xpath = "/kea-dhcp4-server:config/subnet4[id='1']";
+    EXPECT_NO_THROW(agent_->running_sess_->delete_item(xpath.c_str()));
+    const YRTree tree1 = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='10']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='10']/id",
+          "10", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='10']/subnet",
+          "10.0.0.0/24", SR_STRING_T, true }, // The change is here!
+        { "/kea-dhcp4-server:config/subnet4[id='2']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/id",
+          "2", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/subnet",
+          "10.0.2.0/24", SR_STRING_T, true }
+    });
+    EXPECT_NO_THROW(repr.set(tree1, agent_->running_sess_));
+    EXPECT_NO_THROW(agent_->running_sess_->apply_changes());
+
+    // Check that the debug output was correct.
+    addString(
+        "NETCONF_CONFIG_CHANGED_DETAIL YANG configuration changed: deleted: "
+        "/kea-dhcp4-server:config/subnet4[id='1'] (list instance)");
+    addString("NETCONF_CONFIG_CHANGED_DETAIL YANG configuration changed: "
+              "deleted: /kea-dhcp4-server:config/subnet4[id='1']/id = 1");
+    addString(
+        "NETCONF_CONFIG_CHANGED_DETAIL YANG configuration changed: deleted: "
+        "/kea-dhcp4-server:config/subnet4[id='1']/subnet = 10.0.1.0/24");
+    addString(
+        "NETCONF_CONFIG_CHANGED_DETAIL YANG configuration changed: deleted: "
+        "/kea-dhcp4-server:config/subnet4[id='1']/relay (container)");
+
+    waitForCallback();
+
+    EXPECT_TRUE(checkFile());
+}
+
+// Verifies that the keaConfig method works as expected.
+TEST_F(NetconfAgentTest, keaConfig) {
+    // Netconf configuration.
+    string config_prefix = "{\n"
+        "  \"Netconf\": {\n"
+        "    \"managed-servers\": {\n"
+        "      \"dhcp4\": {\n"
+        "        \"control-socket\": {\n"
+        "          \"socket-type\": \"unix\",\n"
+        "          \"socket-name\": \"";
+    string config_trailer = "\"\n"
+        "        }\n"
+        "      }\n"
+        "    }\n"
+        "  }\n"
+        "}";
+    string config = config_prefix + unixSocketFilePath() + config_trailer;
+    NetconfConfigPtr ctx(new NetconfConfig());
+    ElementPtr json;
+    ParserContext parser_context;
+    EXPECT_NO_THROW(json =
+        parser_context.parseString(config, ParserContext::PARSER_NETCONF));
+    ASSERT_TRUE(json);
+    ASSERT_EQ(Element::map, json->getType());
+    ConstElementPtr netconf_json = json->get("Netconf");
+    ASSERT_TRUE(netconf_json);
+    json = boost::const_pointer_cast<Element>(netconf_json);
+    ASSERT_TRUE(json);
+    NetconfSimpleParser::setAllDefaults(json);
+    NetconfSimpleParser::deriveParameters(json);
+    NetconfSimpleParser parser;
+    EXPECT_NO_THROW(parser.parse(ctx, json, false));
+
+    // Get service pair.
+    CfgServersMapPtr servers_map = ctx->getCfgServersMap();
+    ASSERT_TRUE(servers_map);
+    ASSERT_EQ(1, servers_map->size());
+    CfgServersMapPair service_pair = *servers_map->begin();
+
+    // Launch server.
+    thread_.reset(new thread([this]() { fakeServer(); signalStopped(); }));
+
+    // Wait until the server is listening.
+    waitReady();
+
+    // Try keaConfig.
+    EXPECT_NO_THROW(agent_->keaConfig(service_pair));
+
+    // Wait server to be stopped.
+    waitStopped();
+
+    // Check request.
+    ASSERT_EQ(1, requests_.size());
+    const string& request_str = requests_[0];
+    ConstElementPtr request;
+    ASSERT_NO_THROW_LOG(request = Element::fromJSON(request_str));
+    string expected_str = "{\n"
+        "\"command\": \"config-get\"\n"
+        "}";
+    ConstElementPtr expected;
+    ASSERT_NO_THROW_LOG(expected = Element::fromJSON(expected_str));
+    EXPECT_TRUE(expected->equals(*request));
+    // Alternative showing more for debugging...
+    // EXPECT_EQ(prettyPrint(expected), prettyPrint(request));
+
+    // Check response.
+    ASSERT_EQ(1, responses_.size());
+    const string& response_str = responses_[0];
+    ConstElementPtr response;
+    ASSERT_NO_THROW_LOG(response = Element::fromJSON(response_str));
+    expected_str = "{\n"
+        "\"result\": 0,\n"
+        "\"arguments\": {\n"
+        "    \"comment\": \"empty\"\n"
+        "    }\n"
+        "}";
+    ASSERT_NO_THROW_LOG(expected = Element::fromJSON(expected_str));
+    EXPECT_TRUE(expected->equals(*response));
+}
+
+// Verifies that the yangConfig method works as expected: apply YANG config
+// to the server.
+TEST_F(NetconfAgentTest, yangConfig) {
+    // YANG configuration.
+    const YRTree tree = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/id",
+          "1", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/subnet",
+          "10.0.0.0/24", SR_STRING_T, true },
+        { "/kea-dhcp4-server:config/subnet4[id='2']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/id",
+          "2", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/subnet",
+          "10.0.2.0/24", SR_STRING_T, true }
+    });
+    // Load YANG configuration.
+    ASSERT_NO_THROW_LOG(agent_->initSysrepo());
+    YangRepr repr(KEA_DHCP4_SERVER);
+    ASSERT_NO_THROW_LOG(repr.set(tree, agent_->startup_sess_));
+    EXPECT_NO_THROW(agent_->startup_sess_->apply_changes());
+
+    // Netconf configuration.
+    string config_prefix = "{\n"
+        "  \"Netconf\": {\n"
+        "    \"managed-servers\": {\n"
+        "      \"dhcp4\": {\n"
+        "        \"control-socket\": {\n"
+        "          \"socket-type\": \"unix\",\n"
+        "          \"socket-name\": \"";
+    string config_trailer = "\"\n"
+        "        }\n"
+        "      }\n"
+        "    }\n"
+        "  }\n"
+        "}";
+    string config = config_prefix + unixSocketFilePath() + config_trailer;
+    NetconfConfigPtr ctx(new NetconfConfig());
+    ElementPtr json;
+    ParserContext parser_context;
+    EXPECT_NO_THROW(json =
+        parser_context.parseString(config, ParserContext::PARSER_NETCONF));
+    ASSERT_TRUE(json);
+    ASSERT_EQ(Element::map, json->getType());
+    ConstElementPtr netconf_json = json->get("Netconf");
+    ASSERT_TRUE(netconf_json);
+    json = boost::const_pointer_cast<Element>(netconf_json);
+    ASSERT_TRUE(json);
+    NetconfSimpleParser::setAllDefaults(json);
+    NetconfSimpleParser::deriveParameters(json);
+    NetconfSimpleParser parser;
+    EXPECT_NO_THROW(parser.parse(ctx, json, false));
+
+    // Get service pair.
+    CfgServersMapPtr servers_map = ctx->getCfgServersMap();
+    ASSERT_TRUE(servers_map);
+    ASSERT_EQ(1, servers_map->size());
+    CfgServersMapPair service_pair = *servers_map->begin();
+
+    // Launch server.
+    thread_.reset(new thread([this]() { fakeServer(); signalStopped();}));
+
+    // Wait until the server is listening.
+    waitReady();
+
+    // Try yangConfig.
+    EXPECT_NO_THROW(agent_->yangConfig(service_pair));
+
+    // Wait server to be stopped.
+    waitStopped();
+
+    // Check request.
+    ASSERT_EQ(1, requests_.size());
+    const string& request_str = requests_[0];
+    ConstElementPtr request;
+    ASSERT_NO_THROW_LOG(request = Element::fromJSON(request_str));
+    string expected_str = "{\n"
+        "\"command\": \"config-set\",\n"
+        "\"arguments\": {\n"
+        "    \"Dhcp4\": {\n"
+        "        \"subnet4\": [\n"
+        "            {\n"
+        "                \"id\": 1,\n"
+        "                \"subnet\": \"10.0.0.0/24\"\n"
+        "            },\n"
+        "            {\n"
+        "                \"id\": 2,\n"
+        "                \"subnet\": \"10.0.2.0/24\"\n"
+        "            }\n"
+        "        ]\n"
+        "    }\n"
+        "  }\n"
+        "}";
+    ConstElementPtr expected;
+    ASSERT_NO_THROW_LOG(expected = Element::fromJSON(expected_str));
+
+    sortSubnets(expected);
+    sortSubnets(request);
+    EXPECT_EQ(prettyPrint(expected), prettyPrint(request));
+
+    // Check response.
+    ASSERT_EQ(1, responses_.size());
+    const string& response_str = responses_[0];
+    ConstElementPtr response;
+    ASSERT_NO_THROW_LOG(response = Element::fromJSON(response_str));
+    expected_str = "{\n"
+        "\"result\": 0\n"
+        "}";
+    ASSERT_NO_THROW_LOG(expected = Element::fromJSON(expected_str));
+    EXPECT_TRUE(expected->equals(*response));
+}
+
+// Verifies that the subscribeConfig method works as expected.
+TEST_F(NetconfAgentTest, subscribeConfig) {
+    // Netconf configuration.
+    string config_prefix = "{\n"
+        "  \"Netconf\": {\n"
+        "    \"managed-servers\": {\n"
+        "      \"dhcp4\": {\n"
+        "        \"control-socket\": {\n"
+        "          \"socket-type\": \"unix\",\n"
+        "          \"socket-name\": \"";
+    string config_trailer = "\"\n"
+        "        }\n"
+        "      }\n"
+        "    }\n"
+        "  }\n"
+        "}";
+    string config = config_prefix + unixSocketFilePath() + config_trailer;
+    NetconfConfigPtr ctx(new NetconfConfig());
+    ElementPtr json;
+    ParserContext parser_context;
+    EXPECT_NO_THROW(json =
+        parser_context.parseString(config, ParserContext::PARSER_NETCONF));
+    ASSERT_TRUE(json);
+    ASSERT_EQ(Element::map, json->getType());
+    ConstElementPtr netconf_json = json->get("Netconf");
+    ASSERT_TRUE(netconf_json);
+    json = boost::const_pointer_cast<Element>(netconf_json);
+    ASSERT_TRUE(json);
+    NetconfSimpleParser::setAllDefaults(json);
+    NetconfSimpleParser::deriveParameters(json);
+    NetconfSimpleParser parser;
+    EXPECT_NO_THROW(parser.parse(ctx, json, false));
+
+    // Get service pair.
+    CfgServersMapPtr servers_map = ctx->getCfgServersMap();
+    ASSERT_TRUE(servers_map);
+    ASSERT_EQ(1, servers_map->size());
+    CfgServersMapPair service_pair = *servers_map->begin();
+
+    // Try subscribeConfig.
+    EXPECT_EQ(0, agent_->subscriptions_.size());
+    ASSERT_NO_THROW_LOG(agent_->initSysrepo());
+    EXPECT_EQ(0, agent_->subscriptions_.size());
+    EXPECT_NO_THROW(agent_->subscribeConfig(service_pair));
+    EXPECT_EQ(1, agent_->subscriptions_.size());
+
+    /// Unsubscribe.
+    EXPECT_NO_THROW(agent_->subscriptions_.clear());
+}
+
+// Verifies that the update method works as expected: apply new YANG configuration
+// to the server. Note it is called by the subscription callback.
+TEST_F(NetconfAgentTest, update) {
+    // Initial YANG configuration.
+    const YRTree tree0 = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/id",
+          "1", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/subnet",
+          "10.0.0.0/24", SR_STRING_T, true },
+        { "/kea-dhcp4-server:config/subnet4[id='2']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/id",
+          "2", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/subnet",
+          "10.0.2.0/24", SR_STRING_T, true }
+    });
+    // Load initial YANG configuration.
+    ASSERT_NO_THROW_LOG(agent_->initSysrepo());
+    YangRepr repr(KEA_DHCP4_SERVER);
+    ASSERT_NO_THROW_LOG(repr.set(tree0, agent_->startup_sess_));
+    EXPECT_NO_THROW(agent_->startup_sess_->apply_changes());
+
+    // Netconf configuration.
+    // Set validate-changes to false to avoid validate() to be called.
+    string config_prefix = "{\n"
+        "  \"Netconf\": {\n"
+        "    \"validate-changes\": false,\n"
+        "    \"managed-servers\": {\n"
+        "      \"dhcp4\": {\n"
+        "        \"control-socket\": {\n"
+        "          \"socket-type\": \"unix\",\n"
+        "          \"socket-name\": \"";
+    string config_trailer = "\"\n"
+        "        }\n"
+        "      }\n"
+        "    }\n"
+        "  }\n"
+        "}";
+    string config = config_prefix + unixSocketFilePath() + config_trailer;
+    NetconfConfigPtr ctx(new NetconfConfig());
+    ElementPtr json;
+    ParserContext parser_context;
+    EXPECT_NO_THROW(json =
+        parser_context.parseString(config, ParserContext::PARSER_NETCONF));
+    ASSERT_TRUE(json);
+    ASSERT_EQ(Element::map, json->getType());
+    ConstElementPtr netconf_json = json->get("Netconf");
+    ASSERT_TRUE(netconf_json);
+    json = boost::const_pointer_cast<Element>(netconf_json);
+    ASSERT_TRUE(json);
+    NetconfSimpleParser::setAllDefaults(json);
+    NetconfSimpleParser::deriveParameters(json);
+    NetconfSimpleParser parser;
+    EXPECT_NO_THROW(parser.parse(ctx, json, false));
+
+    // Get service pair.
+    CfgServersMapPtr servers_map = ctx->getCfgServersMap();
+    ASSERT_TRUE(servers_map);
+    ASSERT_EQ(1, servers_map->size());
+    CfgServersMapPair service_pair = *servers_map->begin();
+
+    // Subscribe YANG changes.
+    EXPECT_EQ(0, agent_->subscriptions_.size());
+    EXPECT_NO_THROW(agent_->subscribeConfig(service_pair));
+    EXPECT_EQ(1, agent_->subscriptions_.size());
+
+    // Launch server.
+    thread_.reset(new thread([this]() { fakeServer(); signalStopped(); }));
+
+    // Wait until the server is listening.
+    waitReady();
+
+    // Change configuration (subnet #1 moved from 10.0.0.0/24 to 10.0.1/0/24).
+    const YRTree tree1 = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/id",
+          "1", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/subnet",
+          "10.0.1.0/24", SR_STRING_T, true }, // The change is here!
+        { "/kea-dhcp4-server:config/subnet4[id='2']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/id",
+          "2", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/subnet",
+          "10.0.2.0/24", SR_STRING_T, true }
+    });
+    EXPECT_NO_THROW(repr.set(tree1, agent_->running_sess_));
+    EXPECT_NO_THROW(agent_->running_sess_->apply_changes());
+
+    // Wait server to be stopped.
+    waitStopped();
+
+    // Check request.
+    ASSERT_EQ(1, requests_.size());
+    const string& request_str = requests_[0];
+    ConstElementPtr request;
+    ASSERT_NO_THROW_LOG(request = Element::fromJSON(request_str));
+    string expected_str = "{\n"
+        "\"command\": \"config-set\",\n"
+        "\"arguments\": {\n"
+        "    \"Dhcp4\": {\n"
+        "        \"subnet4\": [\n"
+        "            {\n"
+        "                \"id\": 1,\n"
+        "                \"subnet\": \"10.0.1.0/24\"\n"
+        "            },\n"
+        "            {\n"
+        "                \"id\": 2,\n"
+        "                \"subnet\": \"10.0.2.0/24\"\n"
+        "            }\n"
+        "        ]\n"
+        "    }\n"
+        "  }\n"
+        "}";
+    ConstElementPtr expected;
+    ASSERT_NO_THROW_LOG(expected = Element::fromJSON(expected_str));
+
+    sortSubnets(expected);
+    sortSubnets(request);
+    EXPECT_EQ(prettyPrint(expected), prettyPrint(request));
+
+    // Check response.
+    ASSERT_EQ(1, responses_.size());
+    const string& response_str = responses_[0];
+    ConstElementPtr response;
+    ASSERT_NO_THROW_LOG(response = Element::fromJSON(response_str));
+    expected_str = "{\n"
+        "\"result\": 0\n"
+        "}";
+    ASSERT_NO_THROW_LOG(expected = Element::fromJSON(expected_str));
+    EXPECT_TRUE(expected->equals(*response));
+}
+
+// Verifies that the validate method works as expected: test new YANG configuration
+// with the server. Note it is called by the subscription callback and
+// update is called after.
+TEST_F(NetconfAgentTest, validate) {
+    // Initial YANG configuration.
+    const YRTree tree0 = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/id",
+          "1", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/subnet",
+          "10.0.0.0/24", SR_STRING_T, true },
+        { "/kea-dhcp4-server:config/subnet4[id='2']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/id",
+          "2", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/subnet",
+          "10.0.2.0/24", SR_STRING_T, true }
+    });
+    // Load initial YANG configuration.
+    ASSERT_NO_THROW_LOG(agent_->initSysrepo());
+    YangRepr repr(KEA_DHCP4_SERVER);
+    ASSERT_NO_THROW_LOG(repr.set(tree0, agent_->startup_sess_));
+    EXPECT_NO_THROW(agent_->startup_sess_->apply_changes());
+
+    // Netconf configuration.
+    string config_prefix = "{\n"
+        "  \"Netconf\": {\n"
+        "    \"managed-servers\": {\n"
+        "      \"dhcp4\": {\n"
+        "        \"control-socket\": {\n"
+        "          \"socket-type\": \"unix\",\n"
+        "          \"socket-name\": \"";
+    string config_trailer = "\"\n"
+        "        }\n"
+        "      }\n"
+        "    }\n"
+        "  }\n"
+        "}";
+    string config = config_prefix + unixSocketFilePath() + config_trailer;
+    NetconfConfigPtr ctx(new NetconfConfig());
+    ElementPtr json;
+    ParserContext parser_context;
+    EXPECT_NO_THROW(json =
+        parser_context.parseString(config, ParserContext::PARSER_NETCONF));
+    ASSERT_TRUE(json);
+    ASSERT_EQ(Element::map, json->getType());
+    ConstElementPtr netconf_json = json->get("Netconf");
+    ASSERT_TRUE(netconf_json);
+    json = boost::const_pointer_cast<Element>(netconf_json);
+    ASSERT_TRUE(json);
+    NetconfSimpleParser::setAllDefaults(json);
+    NetconfSimpleParser::deriveParameters(json);
+    NetconfSimpleParser parser;
+    EXPECT_NO_THROW(parser.parse(ctx, json, false));
+
+    // Get service pair.
+    CfgServersMapPtr servers_map = ctx->getCfgServersMap();
+    ASSERT_TRUE(servers_map);
+    ASSERT_EQ(1, servers_map->size());
+    CfgServersMapPair service_pair = *servers_map->begin();
+
+    // Subscribe YANG changes.
+    EXPECT_EQ(0, agent_->subscriptions_.size());
+    EXPECT_NO_THROW(agent_->subscribeConfig(service_pair));
+    EXPECT_EQ(1, agent_->subscriptions_.size());
+
+    // Launch server twice.
+    thread_.reset(new thread([this]()
+                             {
+                                 fakeServer();
+                                 fakeServer();
+                                 signalStopped();
+                             }));
+
+    // Wait until the server is listening.
+    waitReady();
+
+    // Change configuration (subnet #1 moved from 10.0.0.0/24 to 10.0.1/0/24).
+    const YRTree tree1 = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/id",
+          "1", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/subnet",
+          "10.0.1.0/24", SR_STRING_T, true }, // The change is here!
+        { "/kea-dhcp4-server:config/subnet4[id='2']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/id",
+          "2", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='2']/subnet",
+          "10.0.2.0/24", SR_STRING_T, true }
+    });
+    EXPECT_NO_THROW(repr.set(tree1, agent_->running_sess_));
+    EXPECT_NO_THROW(agent_->running_sess_->apply_changes());
+
+    // Wait servers to be stopped.
+    waitStopped();
+
+    // Check that the fake server received the first request.
+    ASSERT_LE(1, requests_.size());
+    string request_str = requests_[0];
+    ConstElementPtr request;
+    ASSERT_NO_THROW_LOG(request = Element::fromJSON(request_str));
+    string expected_str = "{\n"
+        "\"command\": \"config-test\",\n"
+        "\"arguments\": {\n"
+        "    \"Dhcp4\": {\n"
+        "        \"subnet4\": [\n"
+        "            {\n"
+        "                \"id\": 1,\n"
+        "                \"subnet\": \"10.0.1.0/24\"\n"
+        "            },\n"
+        "            {\n"
+        "                \"id\": 2,\n"
+        "                \"subnet\": \"10.0.2.0/24\"\n"
+        "            }\n"
+        "        ]\n"
+        "    }\n"
+        "  }\n"
+        "}";
+    ConstElementPtr expected;
+    ASSERT_NO_THROW_LOG(expected = Element::fromJSON(expected_str));
+
+    sortSubnets(expected);
+    sortSubnets(request);
+    EXPECT_EQ(prettyPrint(expected), prettyPrint(request));
+
+    // Check that the fake server received the second request.
+    ASSERT_EQ(2, requests_.size());
+    request_str = requests_[1];
+    ASSERT_NO_THROW_LOG(request = Element::fromJSON(request_str));
+    expected_str = "{\n"
+        "\"command\": \"config-set\",\n"
+        "\"arguments\": {\n"
+        "    \"Dhcp4\": {\n"
+        "        \"subnet4\": [\n"
+        "            {\n"
+        "                \"id\": 1,\n"
+        "                \"subnet\": \"10.0.1.0/24\"\n"
+        "            },\n"
+        "            {\n"
+        "                \"id\": 2,\n"
+        "                \"subnet\": \"10.0.2.0/24\"\n"
+        "            }\n"
+        "        ]\n"
+        "    }\n"
+        "  }\n"
+        "}";
+    ASSERT_NO_THROW_LOG(expected = Element::fromJSON(expected_str));
+
+    sortSubnets(expected);
+    sortSubnets(request);
+    EXPECT_EQ(prettyPrint(expected), prettyPrint(request));
+
+    // Check responses.
+    ASSERT_EQ(2, responses_.size());
+    string response_str = responses_[0];
+    ConstElementPtr response;
+    ASSERT_NO_THROW_LOG(response = Element::fromJSON(response_str));
+    expected_str = "{\n"
+        "\"result\": 0\n"
+        "}";
+    ASSERT_NO_THROW_LOG(expected = Element::fromJSON(expected_str));
+    EXPECT_TRUE(expected->equals(*response));
+
+    response_str = responses_[1];
+    ASSERT_NO_THROW_LOG(response = Element::fromJSON(response_str));
+    expected_str = "{\n"
+        "\"result\": 0\n"
+        "}";
+    ASSERT_NO_THROW_LOG(expected = Element::fromJSON(expected_str));
+    EXPECT_TRUE(expected->equals(*response));
+}
+
+// Verifies what happens when the validate method returns an error.
+TEST_F(NetconfAgentTest, noValidate) {
+    // Initial YANG configuration.
+    const YRTree tree0 = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/id",
+          "1", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/subnet",
+          "10.0.0.0/24", SR_STRING_T, true }
+    });
+    // Load initial YANG configuration.
+    ASSERT_NO_THROW_LOG(agent_->initSysrepo());
+    YangRepr repr(KEA_DHCP4_SERVER);
+    ASSERT_NO_THROW_LOG(repr.set(tree0, agent_->startup_sess_));
+    EXPECT_NO_THROW(agent_->startup_sess_->apply_changes());
+
+    // Netconf configuration.
+    string config_prefix = "{\n"
+        "  \"Netconf\": {\n"
+        "    \"managed-servers\": {\n"
+        "      \"dhcp4\": {\n"
+        "        \"control-socket\": {\n"
+        "          \"socket-type\": \"unix\",\n"
+        "          \"socket-name\": \"";
+    string config_trailer = "\"\n"
+        "        }\n"
+        "      }\n"
+        "    }\n"
+        "  }\n"
+        "}";
+    string config = config_prefix + unixSocketFilePath() + config_trailer;
+    NetconfConfigPtr ctx(new NetconfConfig());
+    ElementPtr json;
+    ParserContext parser_context;
+    EXPECT_NO_THROW(json =
+        parser_context.parseString(config, ParserContext::PARSER_NETCONF));
+    ASSERT_TRUE(json);
+    ASSERT_EQ(Element::map, json->getType());
+    ConstElementPtr netconf_json = json->get("Netconf");
+    ASSERT_TRUE(netconf_json);
+    json = boost::const_pointer_cast<Element>(netconf_json);
+    ASSERT_TRUE(json);
+    NetconfSimpleParser::setAllDefaults(json);
+    NetconfSimpleParser::deriveParameters(json);
+    NetconfSimpleParser parser;
+    EXPECT_NO_THROW(parser.parse(ctx, json, false));
+
+    // Get service pair.
+    CfgServersMapPtr servers_map = ctx->getCfgServersMap();
+    ASSERT_TRUE(servers_map);
+    ASSERT_EQ(1, servers_map->size());
+    CfgServersMapPair service_pair = *servers_map->begin();
+
+    // Subscribe YANG changes.
+    EXPECT_EQ(0, agent_->subscriptions_.size());
+    EXPECT_NO_THROW(agent_->subscribeConfig(service_pair));
+    EXPECT_EQ(1, agent_->subscriptions_.size());
+
+    // Change configuration (add invalid user context).
+    const YRTree tree1 = YangRepr::buildTreeFromVector({
+        { "/kea-dhcp4-server:config", "", SR_CONTAINER_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']", "", SR_LIST_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/id",
+          "1", SR_UINT32_T, false },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/subnet",
+          "10.0.0.0/24", SR_STRING_T, true },
+        { "/kea-dhcp4-server:config/subnet4[id='1']/user-context",
+          "BOGUS", SR_STRING_T, true }
+    });
+    try {
+        repr.set(tree1, agent_->running_sess_);
+    } catch (const sysrepo_exception& ex) {
+        EXPECT_EQ("User callback failed", string(ex.what()));
+    } catch (const std::exception& ex) {
+        ADD_FAILURE() << "unexpected exception: " << ex.what();
+    } catch (...) {
+        ADD_FAILURE() << "unexpected exception";
+    }
+}
+
+}  // namespace
diff --git a/src/bin/netconf/tests/parser_unittests.cc b/src/bin/netconf/tests/parser_unittests.cc
new file mode 100644
index 0000000..b496470
--- /dev/null
+++ b/src/bin/netconf/tests/parser_unittests.cc
@@ -0,0 +1,988 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <cc/data.h>
+#include <cc/dhcp_config_error.h>
+#include <netconf/parser_context.h>
+#include <testutils/gtest_utils.h>
+#include <testutils/io_utils.h>
+#include <testutils/log_utils.h>
+#include <testutils/user_context_utils.h>
+
+#include <gtest/gtest.h>
+
+#include <fstream>
+#include <set>
+
+#include <boost/algorithm/string.hpp>
+
+using namespace isc::data;
+using namespace isc::test;
+using namespace std;
+
+namespace isc {
+namespace netconf {
+namespace test {
+
+/// @brief compares two JSON trees
+///
+/// If differences are discovered, gtest failure is reported (using EXPECT_EQ)
+///
+/// @param a first to be compared
+/// @param b second to be compared
+void compareJSON(ConstElementPtr a, ConstElementPtr b) {
+    ASSERT_TRUE(a);
+    ASSERT_TRUE(b);
+    EXPECT_EQ(a->str(), b->str());
+}
+
+/// @brief Tests if the input string can be parsed with specific parser
+///
+/// The input text will be passed to bison parser of specified type.
+/// Then the same input text is passed to legacy JSON parser and outputs
+/// from both parsers are compared. The legacy comparison can be disabled,
+/// if the feature tested is not supported by the old parser (e.g.
+/// new comment styles)
+///
+/// @param txt text to be compared
+/// @param parser_type bison parser type to be instantiated
+/// @param compare whether to compare the output with legacy JSON parser
+void testParser(const std::string& txt, ParserContext::ParserType parser_type,
+    bool compare = true) {
+    SCOPED_TRACE("\n=== tested config ===\n" + txt + "=====================");
+
+    ConstElementPtr test_json;
+    ASSERT_NO_THROW_LOG({
+            try {
+                ParserContext ctx;
+                test_json = ctx.parseString(txt, parser_type);
+            } catch (const std::exception &e) {
+                cout << "EXCEPTION: " << e.what() << endl;
+                throw;
+            }
+
+    });
+
+    if (!compare) {
+        return;
+    }
+
+    // Now compare if both representations are the same.
+    ElementPtr reference_json;
+    ASSERT_NO_THROW_LOG(reference_json = Element::fromJSON(txt, true));
+    compareJSON(reference_json, test_json);
+}
+
+TEST(ParserTest, mapInMap) {
+    string txt = "{ \"xyzzy\": { \"foo\": 123, \"baz\": 456 } }";
+    testParser(txt, ParserContext::PARSER_JSON);
+}
+
+TEST(ParserTest, listInList) {
+    string txt = "[ [ \"Britain\", \"Wales\", \"Scotland\" ], "
+                 "[ \"Pomorze\", \"Wielkopolska\", \"Tatry\"] ]";
+    testParser(txt, ParserContext::PARSER_JSON);
+}
+
+TEST(ParserTest, nestedMaps) {
+    string txt = "{ \"europe\": { \"UK\": { \"London\": { \"street\": \"221B Baker\" }}}}";
+    testParser(txt, ParserContext::PARSER_JSON);
+}
+
+TEST(ParserTest, nestedLists) {
+    string txt = "[ \"half\", [ \"quarter\", [ \"eighth\", [ \"sixteenth\" ]]]]";
+    testParser(txt, ParserContext::PARSER_JSON);
+}
+
+TEST(ParserTest, listsInMaps) {
+    string txt = "{ \"constellations\": { \"orion\": [ \"rigel\", \"betelgeuse\" ], "
+                    "\"cygnus\": [ \"deneb\", \"albireo\"] } }";
+    testParser(txt, ParserContext::PARSER_JSON);
+}
+
+TEST(ParserTest, mapsInLists) {
+    string txt = "[ { \"body\": \"earth\", \"gravity\": 1.0 },"
+                 " { \"body\": \"mars\", \"gravity\": 0.376 } ]";
+    testParser(txt, ParserContext::PARSER_JSON);
+}
+
+TEST(ParserTest, types) {
+    string txt = "{ \"string\": \"foo\","
+                   "\"integer\": 42,"
+                   "\"boolean\": true,"
+                   "\"map\": { \"foo\": \"bar\" },"
+                   "\"list\": [ 1, 2, 3 ],"
+                   "\"null\": null }";
+    testParser(txt, ParserContext::PARSER_JSON);
+}
+
+TEST(ParserTest, keywordJSON) {
+    string txt = "{ \"name\": \"user\","
+                   "\"type\": \"password\","
+                   "\"user\": \"name\","
+                   "\"password\": \"type\" }";
+    testParser(txt, ParserContext::PARSER_JSON);
+}
+
+// This test checks if full config (with top level and Netconf objects) can
+// be parsed with syntactic checking (and as pure JSON).
+TEST(ParserTest, keywordNetconf) {
+    string txt = "{ \"Netconf\": {\n"
+        "    \"boot-update\": true,"
+        "    \"subscribe-changes\": true,"
+        "    \"validate-changes\": true,"
+        "    \"managed-servers\": {"
+        "        \"dhcp4\": {"
+        "            \"model\": \"kea-dhcp4-server\","
+        "            \"boot-update\": false,"
+        "            \"subscribe-changes\": false,"
+        "            \"validate-changes\": false,"
+        "            \"control-socket\": {"
+        "                \"socket-type\": \"unix\","
+        "                \"socket-name\": \"/tmp/kea4-ctrl-socket\""
+        "            }"
+        "        },"
+        "        \"dhcp6\": {"
+        "            \"model\": \"kea-dhcp6-server\","
+        "            \"boot-update\": false,"
+        "            \"subscribe-changes\": false,"
+        "            \"validate-changes\": false,"
+        "            \"control-socket\": {"
+        "                \"socket-type\": \"http\","
+        "                \"socket-url\": \"http://127.0.0.1:12345/\""
+        "            }"
+        "        },"
+        "        \"d2\": {"
+        "            \"model\": \"kea-dhcp-ddns\","
+        "            \"boot-update\": false,"
+        "            \"subscribe-changes\": false,"
+        "            \"validate-changes\": false,"
+        "            \"control-socket\": {"
+        "                \"socket-type\": \"stdout\""
+        "            }"
+        "        },"
+        "        \"ca\": {"
+        "            \"model\": \"kea-ctrl-agent\","
+        "            \"boot-update\": false,"
+        "            \"subscribe-changes\": false,"
+        "            \"validate-changes\": false,"
+        "            \"control-socket\": {"
+        "                \"socket-type\": \"http\","
+        "                \"user-context\": { \"use default\": true }"
+        "            }"
+        "        }"
+        "    },"
+        "    \"hooks-libraries\": ["
+        "    {"
+        "        \"library\": \"/opt/local/control-agent-commands.so\","
+        "        \"parameters\": {"
+        "            \"param1\": \"foo\""
+        "        }"
+        "    }"
+        "   ]"
+        "} }";
+    // This is a full config, so we'll parse it as full config (PARSER_NETCONF)
+    testParser(txt, ParserContext::PARSER_NETCONF);
+    testParser(txt, ParserContext::PARSER_JSON);
+}
+
+// This test checks if simplified config (without top level and Netconf
+// objects) can be parsed with syntactic checking (and as pure JSON).
+TEST(ParserTest, keywordSubNetconf) {
+
+    // This is similar to previous test, but note the lack of outer
+    // map and Netconf.
+    string txt = "{\n"
+        "    \"boot-update\": true,"
+        "    \"subscribe-changes\": true,"
+        "    \"validate-changes\": true,"
+        "    \"managed-servers\": {"
+        "        \"dhcp4\": {"
+        "            \"model\": \"kea-dhcp4-server\","
+        "            \"boot-update\": false,"
+        "            \"subscribe-changes\": false,"
+        "            \"validate-changes\": false,"
+        "            \"control-socket\": {"
+        "                \"socket-type\": \"unix\","
+        "                \"socket-name\": \"/tmp/kea4-ctrl-socket\""
+        "            }"
+        "        },"
+        "        \"dhcp6\": {"
+        "            \"model\": \"kea-dhcp6-server\","
+        "            \"boot-update\": false,"
+        "            \"subscribe-changes\": false,"
+        "            \"validate-changes\": false,"
+        "            \"control-socket\": {"
+        "                \"socket-type\": \"http\","
+        "                \"socket-url\": \"http://127.0.0.1:12345/\""
+        "            }"
+        "        },"
+        "        \"d2\": {"
+        "            \"model\": \"kea-dhcp-ddns\","
+        "            \"boot-update\": false,"
+        "            \"subscribe-changes\": false,"
+        "            \"validate-changes\": false,"
+        "            \"control-socket\": {"
+        "                \"socket-type\": \"stdout\""
+        "            }"
+        "        },"
+        "        \"ca\": {"
+        "            \"model\": \"kea-ctrl-agent\","
+        "            \"boot-update\": false,"
+        "            \"subscribe-changes\": false,"
+        "            \"validate-changes\": false,"
+        "            \"control-socket\": {"
+        "                \"socket-type\": \"http\","
+        "                \"user-context\": { \"use default\": true }"
+        "            }"
+        "        }"
+        "    },"
+        "    \"hooks-libraries\": ["
+        "    {"
+        "        \"library\": \"/opt/local/control-agent-commands.so\","
+        "        \"parameters\": {"
+        "            \"param1\": \"foo\""
+        "        }"
+        "    }"
+        "   ]"
+        "}";
+
+    // This is only a subset of full config, so we'll parse with PARSER_SUB_NETCONF.
+    testParser(txt, ParserContext::PARSER_SUB_NETCONF);
+    testParser(txt, ParserContext::PARSER_JSON);
+}
+
+// Tests if bash (#) comments are supported. That's the only comment type that
+// was supported by the old parser.
+TEST(ParserTest, bashComments) {
+    string txt= "{ \"Netconf\": {"
+                "  \"managed-servers\": {\n"
+                "    \"d2\": {\n"
+                "      \"model\": \"foo\",\n"
+                "      \"control-socket\": {\n"
+                "# this is a comment\n"
+                "\"socket-type\": \"unix\", \n"
+                "# This socket is mine. I can name it whatever\n"
+                "# I like, ok?\n"
+                "\"socket-name\": \"Hector\" \n"
+                "} } } } }";
+    testParser(txt, ParserContext::PARSER_NETCONF);
+}
+
+// Tests if C++ (//) comments can start anywhere, not just in the first line.
+TEST(ParserTest, cppComments) {
+    string txt= "{ \"Netconf\": { // the level is over 9000!\n"
+                "  \"managed-servers\": {\n"
+                "    // Let's try talking to D2. Sadly, it never talks"
+                "    // to us back :( Maybe he doesn't like his name?\n"
+                "    \"d2\": {\n"
+                "      \"model\": \"foo\",\n"
+                "      \"control-socket\": {\n"
+                "\"socket-type\": \"unix\", \n"
+                "\"socket-name\": \"Hector\" \n"
+                "} } } } }";
+
+    testParser(txt, ParserContext::PARSER_NETCONF, false);
+}
+
+// Tests if bash (#) comments can start anywhere, not just in the first line.
+TEST(ParserTest, bashCommentsInline) {
+    string txt= "{ \"Netconf\": {"
+                "  \"managed-servers\": {\n"
+                "    \"d2\": {\n"
+                "      \"model\": \"foo\",\n"
+                "      \"control-socket\": {\n"
+                "\"socket-type\": \"unix\", # Maybe Hector is not really a \n"
+                "\"socket-name\": \"Hector\" # Unix process?\n"
+                "# Oh no! He's a windows one and just pretending!\n"
+                "} } } } }";
+    testParser(txt, ParserContext::PARSER_NETCONF, false);
+}
+
+// Tests if multi-line C style comments are handled correctly.
+TEST(ParserTest, multilineComments) {
+    string txt= "{ \"Netconf\": {"
+                "  \"managed-servers\": {\n"
+                "    \"dhcp4\": {\n"
+                "        \"model\": \"foo\",\n"
+                "        \"control-socket\": {\n"
+                "            \"socket-type\": \"stdout\"\n"
+                "        }\n"
+                "    }\n"
+                "  /* Ok, forget about it. If Hector doesn't want to talk,\n"
+                "     we won't talk to him either. We now have quiet days. */\n"
+                "  /* \"d2\": {"
+                "  \"model\": \"bar\",\n"
+                "  \"control-socket\": {\n"
+                "  \"socket-type\": \"unix\",\n"
+                "\"socket-name\": \"Hector\"\n"
+                "} }*/ } } }";
+    testParser(txt, ParserContext::PARSER_NETCONF, false);
+}
+
+// Tests if embedded comments are handled correctly.
+TEST(ParserTest, embbededComments) {
+    string txt= "{ \"Netconf\": {"
+                "  \"comment\": \"a comment\","
+                "  \"managed-servers\": {\n"
+                "    \"dhcp4\": {\n"
+                "      \"control-socket\": {\n"
+                "        \"user-context\": { \"comment\": \"indirect\" },\n"
+                "        \"socket-type\": \"stdout\"\n"
+                "    } } },\n"
+                "  \"user-context\": { \"compatible\": true }\n"
+                "} }";
+    testParser(txt, ParserContext::PARSER_NETCONF, false);
+}
+
+/// @brief Loads specified example config file
+///
+/// This test loads specified example file twice: first, using the legacy
+/// JSON file and then second time using bison parser. Two created Element
+/// trees are then compared. The input is decommented before it is passed
+/// to legacy parser (as legacy support for comments is very limited).
+///
+/// @param fname name of the file to be loaded
+void testFile(const std::string& fname) {
+    ElementPtr json;
+    ElementPtr reference_json;
+    ConstElementPtr test_json;
+
+    string decommented = decommentJSONfile(fname);
+
+    cout << "Parsing file " << fname << "(" << decommented << ")" << endl;
+
+    EXPECT_NO_THROW(json = Element::fromJSONFile(decommented, true));
+    reference_json = moveComments(json);
+
+    // remove the temporary file
+    EXPECT_NO_THROW(::remove(decommented.c_str()));
+
+    EXPECT_NO_THROW(
+    try {
+        ParserContext ctx;
+        test_json = ctx.parseFile(fname, ParserContext::PARSER_NETCONF);
+    } catch (const std::exception &x) {
+        cout << "EXCEPTION: " << x.what() << endl;
+        throw;
+    });
+
+    ASSERT_TRUE(reference_json);
+    ASSERT_TRUE(test_json);
+
+    compareJSON(reference_json, test_json);
+}
+
+// This test loads all available existing files. Each config is loaded
+// twice: first with the existing Element::fromJSONFile() and then
+// the second time with NetconfParser. Both JSON trees are then compared.
+// Hopefully the list of example configs will grow over time.
+TEST(ParserTest, file) {
+    vector<string> configs;
+    configs.push_back("comments.json");
+    configs.push_back("simple-dhcp4.json");
+    configs.push_back("simple-dhcp6.json");
+
+    for (int i = 0; i<configs.size(); i++) {
+        testFile(string(CFG_EXAMPLES) + "/" + configs[i]);
+    }
+}
+
+/// @brief Tests error conditions in NetconfParser
+///
+/// @param txt text to be parsed
+/// @param parser_type type of the parser to be used in the test
+/// @param msg expected content of the exception
+void testError(const std::string& txt,
+               ParserContext::ParserType parser_type,
+               const std::string& msg) {
+    SCOPED_TRACE("\n=== tested config ===\n" + txt + "=====================");
+
+    try {
+        ParserContext ctx;
+        ConstElementPtr parsed = ctx.parseString(txt, parser_type);
+        FAIL() << "Expected ParseError but nothing was raised (expected: "
+               << msg << ")";
+    }
+    catch (const ParseError& ex) {
+        EXPECT_EQ(msg, ex.what());
+    }
+    catch (...) {
+        FAIL() << "Expected ParseError but something else was raised";
+    }
+}
+
+// Verify that error conditions are handled correctly.
+TEST(ParserTest, errors) {
+    // no input
+    testError("", ParserContext::PARSER_JSON,
+              "<string>:1.1: syntax error, unexpected end of file");
+    testError(" ", ParserContext::PARSER_JSON,
+              "<string>:1.2: syntax error, unexpected end of file");
+    testError("\n", ParserContext::PARSER_JSON,
+              "<string>:2.1: syntax error, unexpected end of file");
+    testError("\t", ParserContext::PARSER_JSON,
+              "<string>:1.2: syntax error, unexpected end of file");
+    testError("\r", ParserContext::PARSER_JSON,
+              "<string>:1.2: syntax error, unexpected end of file");
+
+    // comments
+    testError("# nothing\n",
+              ParserContext::PARSER_JSON,
+              "<string>:2.1: syntax error, unexpected end of file");
+    testError(" #\n",
+              ParserContext::PARSER_JSON,
+              "<string>:2.1: syntax error, unexpected end of file");
+    testError("// nothing\n",
+              ParserContext::PARSER_JSON,
+              "<string>:2.1: syntax error, unexpected end of file");
+    testError("/* nothing */\n",
+              ParserContext::PARSER_JSON,
+              "<string>:2.1: syntax error, unexpected end of file");
+    testError("/* no\nthing */\n",
+              ParserContext::PARSER_JSON,
+              "<string>:3.1: syntax error, unexpected end of file");
+    testError("/* no\nthing */\n\n",
+              ParserContext::PARSER_JSON,
+              "<string>:4.1: syntax error, unexpected end of file");
+    testError("/* nothing\n",
+              ParserContext::PARSER_JSON,
+              "Comment not closed. (/* in line 1");
+    testError("\n\n\n/* nothing\n",
+              ParserContext::PARSER_JSON,
+              "Comment not closed. (/* in line 4");
+    testError("{ /* */*/ }\n",
+              ParserContext::PARSER_JSON,
+              "<string>:1.3-8: Invalid character: *");
+    testError("{ /* // *// }\n",
+              ParserContext::PARSER_JSON,
+              "<string>:1.3-11: Invalid character: /");
+    testError("{ /* // *///  }\n",
+              ParserContext::PARSER_JSON,
+              "<string>:2.1: syntax error, unexpected end of file, "
+              "expecting }");
+
+    // includes
+    testError("<?\n",
+              ParserContext::PARSER_JSON,
+              "Directive not closed.");
+    testError("<?include\n",
+              ParserContext::PARSER_JSON,
+              "Directive not closed.");
+    string file = string(CFG_EXAMPLES) + "/" + "simple-dhcp4.json";
+    testError("<?include \"" + file + "\"\n",
+              ParserContext::PARSER_JSON,
+              "Directive not closed.");
+    testError("<?include \"/foo/bar\" ?>/n",
+              ParserContext::PARSER_JSON,
+              "Can't open include file /foo/bar");
+
+    // JSON keywords
+    testError("{ \"foo\": True }",
+              ParserContext::PARSER_JSON,
+              "<string>:1.10-13: JSON true reserved keyword is lower case only");
+    testError("{ \"foo\": False }",
+              ParserContext::PARSER_JSON,
+              "<string>:1.10-14: JSON false reserved keyword is lower case only");
+    testError("{ \"foo\": NULL }",
+              ParserContext::PARSER_JSON,
+              "<string>:1.10-13: JSON null reserved keyword is lower case only");
+    testError("{ \"foo\": Tru }",
+              ParserContext::PARSER_JSON,
+              "<string>:1.10: Invalid character: T");
+    testError("{ \"foo\": nul }",
+              ParserContext::PARSER_JSON,
+              "<string>:1.10: Invalid character: n");
+
+    // numbers
+    testError("123",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.1-3: syntax error, unexpected integer, "
+              "expecting {");
+    testError("-456",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.1-4: syntax error, unexpected integer, "
+              "expecting {");
+    testError("-0001",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.1-5: syntax error, unexpected integer, "
+              "expecting {");
+    testError("1234567890123456789012345678901234567890",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-40: Failed to convert "
+              "1234567890123456789012345678901234567890"
+              " to an integer.");
+    testError("-3.14e+0",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.1-8: syntax error, unexpected floating point, "
+              "expecting {");
+    testError("1e50000",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-7: Failed to convert 1e50000 "
+              "to a floating point.");
+
+    // strings
+    testError("\"aabb\"",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.1-6: syntax error, unexpected constant string, "
+              "expecting {");
+    testError("{ \"aabb\"err",
+              ParserContext::PARSER_JSON,
+              "<string>:1.9: Invalid character: e");
+    testError("{ err\"aabb\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.3: Invalid character: e");
+    testError("\"a\n\tb\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-6 (near 2): Invalid control in \"a\n\tb\"");
+    testError("\"a\n\\u12\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-8 (near 2): Invalid control in \"a\n\\u12\"");
+    testError("\"a\\n\\tb\"",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.1-8: syntax error, unexpected constant string, "
+              "expecting {");
+    testError("\"a\\x01b\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-8 (near 3): Bad escape in \"a\\x01b\"");
+    testError("\"a\\u0162\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-9 (near 4): Unsupported unicode escape "
+              "in \"a\\u0162\"");
+    testError("\"a\\u062z\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-9 (near 3): Bad escape in \"a\\u062z\"");
+    testError("\"abc\\\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-6 (near 6): Overflow escape in \"abc\\\"");
+    testError("\"a\\u006\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-8 (near 3): Overflow unicode escape "
+              "in \"a\\u006\"");
+    testError("\"\\u\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-4 (near 2): Overflow unicode escape in \"\\u\"");
+    testError("\"\\u\x02\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-5 (near 2): Bad escape in \"\\u\x02\"");
+    testError("\"\\u\\\"foo\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-5 (near 2): Bad escape in \"\\u\\\"...");
+    testError("\"\x02\\u\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1-5 (near 1): Invalid control in \"\x02\\u\"");
+
+    // from data_unittest.c
+    testError("\\a",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1: Invalid character: \\");
+    testError("\\",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1: Invalid character: \\");
+    testError("\\\"\\\"",
+              ParserContext::PARSER_JSON,
+              "<string>:1.1: Invalid character: \\");
+
+    // want a map
+    testError("[]\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.1: syntax error, unexpected [, "
+              "expecting {");
+    testError("[]\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.1: syntax error, unexpected [, "
+              "expecting {");
+    testError("{ 123 }\n",
+              ParserContext::PARSER_JSON,
+              "<string>:1.3-5: syntax error, unexpected integer, "
+              "expecting }");
+    testError("{ 123 }\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.3-5: syntax error, unexpected integer, "
+              "expecting Netconf");
+    testError("{ \"foo\" }\n",
+              ParserContext::PARSER_JSON,
+              "<string>:1.9: syntax error, unexpected }, "
+              "expecting :");
+    testError("{ \"foo\" }\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.3-7: syntax error, unexpected constant string, "
+              "expecting Netconf");
+    testError("{ \"foo\":null }\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.3-7: syntax error, unexpected constant string, "
+              "expecting Netconf");
+    testError("{ \"Logging\":null }\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.3-11: syntax error, unexpected constant string, "
+              "expecting Netconf");
+    testError("{ \"Netconf\" }\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.13: syntax error, unexpected }, "
+              "expecting :");
+    testError("{ \"Netconf\":",
+              ParserContext::PARSER_NETCONF,
+              "<string>:1.13: syntax error, unexpected end of file, "
+              "expecting {");
+    testError("{}{}\n",
+              ParserContext::PARSER_JSON,
+              "<string>:1.3: syntax error, unexpected {, "
+              "expecting end of file");
+
+    // duplicate in map
+    testError("{ \"foo\": 1, \"foo\": true }\n",
+              ParserContext::PARSER_JSON,
+              "<string>:1:13: duplicate foo entries in "
+              "JSON map (previous at <string>:1:10)");
+
+    // bad commas
+    testError("{ , }\n",
+              ParserContext::PARSER_JSON,
+              "<string>:1.3: syntax error, unexpected \",\", "
+              "expecting }");
+    testError("{ , \"foo\":true }\n",
+              ParserContext::PARSER_JSON,
+              "<string>:1.3: syntax error, unexpected \",\", "
+              "expecting }");
+
+    // bad type
+    testError("{ \"Netconf\":{\n"
+              "  \"managed-servers\":false }}\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:2.21-25: syntax error, unexpected boolean, "
+              "expecting {");
+
+    // unknown keyword
+    testError("{ \"Netconf\":{\n"
+              " \"topping\": \"Mozzarella\" }}\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:2.2-10: got unexpected keyword "
+              "\"topping\" in Netconf map.");
+
+    // user context and embedded comments
+    testError("{ \"Netconf\":{\n"
+              "  \"comment\": true } }\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:2.14-17: syntax error, unexpected boolean, "
+              "expecting constant string");
+
+    testError("{ \"Netconf\":{\n"
+              "  \"user-context\": \"a comment\" } }\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:2.19-29: syntax error, unexpected constant string, "
+              "expecting {");
+
+    testError("{ \"Netconf\":{\n"
+              "  \"comment\": \"a comment\",\n"
+              "  \"comment\": \"another one\" } }\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:3.3-11: duplicate user-context/comment entries "
+              "(previous at <string>:2:3)");
+
+    testError("{ \"Netconf\":{\n"
+              "  \"user-context\": { \"version\": 1 },\n"
+              "  \"user-context\": { \"one\": \"only\" } } }\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:3.3-16: duplicate user-context entries "
+              "(previous at <string>:2:19)");
+
+    testError("{ \"Netconf\":{\n"
+              "  \"user-context\": { \"comment\": \"indirect\" },\n"
+              "  \"comment\": \"a comment\" } }\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:3.3-11: duplicate user-context/comment entries "
+              "(previous at <string>:2:19)");
+
+    // duplicate Netconf entries
+    testError("{ \"Netconf\":{\n"
+              "  \"comment\": \"first\" },\n"
+              "  \"Netconf\":{\n"
+              "  \"comment\": \"second\" }}\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:3.3-11: syntax error, unexpected Netconf, expecting \",\" or }");
+
+    // duplicate of not string entries
+    testError("{ \"Netconf\":{\n"
+              " \"boot-update\": true,\n"
+              " \"boot-update\": false }}\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:3:2: duplicate boot-update entries in "
+              "Netconf map (previous at <string>:2:17)");
+
+    // duplicate of string entries
+    testError("{ \"Netconf\":{\n"
+              "  \"managed-servers\": {\n"
+              "    \"d2\": {\n"
+              "      \"model\": \"foo\",\n"
+              "      \"model\": \"bar\" }}}}\n",
+              ParserContext::PARSER_NETCONF,
+              "<string>:5:7: duplicate model entries in "
+              "managed-servers entry map (previous at <string>:4:16)");
+}
+
+// Check unicode escapes
+TEST(ParserTest, unicodeEscapes) {
+    ConstElementPtr result;
+    string json;
+
+    // check we can reread output
+    for (char c = -128; c < 127; ++c) {
+        string ins(" ");
+        ins[1] = c;
+        ConstElementPtr e(new StringElement(ins));
+        json = e->str();
+        ASSERT_NO_THROW_LOG(
+        try {
+            ParserContext ctx;
+            result = ctx.parseString(json, ParserContext::PARSER_JSON);
+        } catch (const std::exception &x) {
+            cout << "EXCEPTION: " << x.what() << endl;
+            throw;
+        });
+        ASSERT_EQ(Element::string, result->getType());
+        EXPECT_EQ(ins, result->stringValue());
+    }
+}
+
+// This test checks that all representations of a slash is recognized properly.
+TEST(ParserTest, unicodeSlash) {
+    // check the 4 possible encodings of solidus '/'
+    ConstElementPtr result;
+    string json = "\"/\\/\\u002f\\u002F\"";
+    ASSERT_NO_THROW_LOG(
+    try {
+        ParserContext ctx;
+        result = ctx.parseString(json, ParserContext::PARSER_JSON);
+    } catch (const std::exception &x) {
+        cout << "EXCEPTION: " << x.what() << endl;
+        throw;
+    });
+    ASSERT_EQ(Element::string, result->getType());
+    EXPECT_EQ("////", result->stringValue());
+}
+
+/// @brief Load a file into a JSON element.
+///
+/// @param fname The name of the file to load.
+/// @param list The JSON element list to add the parsing result to.
+void loadFile(const string& fname, ElementPtr list) {
+    ParserContext ctx;
+    ElementPtr json;
+    EXPECT_NO_THROW(json = ctx.parseFile(fname, ParserContext::PARSER_NETCONF));
+    ASSERT_TRUE(json);
+    list->add(json);
+}
+
+// This test checks that all map entries are in the sample file.
+TEST(ParserTest, mapEntries) {
+    // Type of keyword set.
+    typedef set<string> KeywordSet;
+
+    // Get keywords from the syntax file (netconf_parser.yy).
+    ifstream syntax_file(SYNTAX_FILE);
+    EXPECT_TRUE(syntax_file.is_open());
+    string line;
+    KeywordSet syntax_keys = { "user-context" };
+    // Code setting the map entry.
+    const string pattern = "ctx.stack_.back()->set(\"";
+    while (getline(syntax_file, line)) {
+        // Skip comments.
+        size_t comment = line.find("//");
+        if (comment <= pattern.size()) {
+            continue;
+        }
+        if (comment != string::npos) {
+            line.resize(comment);
+        }
+        // Search for the code pattern.
+        size_t key_begin = line.find(pattern);
+        if (key_begin == string::npos) {
+            continue;
+        }
+        // Extract keywords.
+        line = line.substr(key_begin + pattern.size());
+        size_t key_end = line.find_first_of('"');
+        EXPECT_NE(string::npos, key_end);
+        string keyword = line.substr(0, key_end);
+        // Ignore result when adding the keyword to the syntax keyword set.
+        static_cast<void>(syntax_keys.insert(keyword));
+    }
+    syntax_file.close();
+
+    // Get keywords from the sample file
+    string sample_dir(CFG_EXAMPLES);
+    sample_dir += "/";
+    ElementPtr sample_json = Element::createList();
+    loadFile(sample_dir + "simple-dhcp4.json", sample_json);
+    loadFile(sample_dir + "simple-dhcp6.json", sample_json);
+    KeywordSet sample_keys = {
+        "ca", "d2",
+        "hooks-libraries", "library", "parameters",
+        "socket-url"
+    };
+    // Recursively extract keywords.
+    static void (*extract)(ConstElementPtr, KeywordSet&) =
+        [] (ConstElementPtr json, KeywordSet& set) {
+            if (json->getType() == Element::list) {
+                // Handle lists.
+                for (auto elem : json->listValue()) {
+                    extract(elem, set);
+                }
+            } else if (json->getType() == Element::map) {
+                // Handle maps.
+                for (auto elem : json->mapValue()) {
+                    static_cast<void>(set.insert(elem.first));
+                    // Skip entries with free content.
+                    if ((elem.first != "user-context") &&
+                        (elem.first != "parameters")) {
+                        extract(elem.second, set);
+                    }
+                }
+            }
+        };
+    extract(sample_json, sample_keys);
+
+    // Compare.
+    EXPECT_EQ(syntax_keys, sample_keys);
+}
+
+/// @brief Tests a duplicate entry.
+///
+/// The entry was duplicated by adding a new <name>DDDD entry.
+/// An error is expected, usually it is a duplicate but there are
+/// a few syntax errors when the syntax allows only one parameter.
+///
+/// @param json the JSON configuration with the duplicate entry.
+void testDuplicate(ConstElementPtr json) {
+    string config = json->str();
+    size_t where = config.find("DDDD");
+    ASSERT_NE(string::npos, where);
+    string before = config.substr(0, where);
+    string after = config.substr(where + 4, string::npos);
+    ParserContext ctx;
+    EXPECT_THROW(ctx.parseString(before + after,
+                                 ParserContext::PARSER_NETCONF),
+                 ParseError) << "config: " << config;
+}
+
+// This test checks that duplicate entries make parsing to fail.
+TEST(ParserTest, duplicateMapEntries) {
+    // Get the config to work with from the sample file.
+    string sample_fname(CFG_EXAMPLES);
+    sample_fname += "/simple-dhcp6.json";
+    ParserContext ctx;
+    ElementPtr sample_json;
+    EXPECT_NO_THROW(sample_json =
+        ctx.parseFile(sample_fname, ParserContext::PARSER_NETCONF));
+    ASSERT_TRUE(sample_json);
+
+    // Recursively check duplicates.
+    static void (*test)(ElementPtr, ElementPtr, size_t&) =
+        [] (ElementPtr config, ElementPtr json, size_t& cnt) {
+            if (json->getType() == Element::list) {
+                // Handle lists.
+                for (auto elem : json->listValue()) {
+                    test(config, elem, cnt);
+                }
+            } else if (json->getType() == Element::map) {
+                // Handle maps.
+                for (auto elem : json->mapValue()) {
+                    // Skip entries with free content.
+                    if ((elem.first == "user-context") ||
+                        (elem.first == "parameters")) {
+                        continue;
+                    }
+
+                    // Perform tests.
+                    string dup = elem.first + "DDDD";
+                    json->set(dup, elem.second);
+                    testDuplicate(config);
+                    json->remove(dup);
+                    ++cnt;
+
+                    // Recursive call.
+                    ElementPtr mutable_json =
+                        boost::const_pointer_cast<Element>(elem.second);
+                    ASSERT_TRUE(mutable_json);
+                    test(config, mutable_json, cnt);
+                }
+            }
+        };
+    size_t cnt = 0;
+    test(sample_json, sample_json, cnt);
+    cout << "checked " << cnt << " duplicated map entries\n";
+}
+
+/// @brief Test fixture for trailing commas.
+class TrailingCommasTest : public isc::dhcp::test::LogContentTest {
+public:
+    /// @brief Add a log entry.
+    ///
+    /// @param loc Location of the trailing comma.
+    void addLog(const string& loc) {
+        string log = "NETCONF_CONFIG_SYNTAX_WARNING Netconf ";
+        log += "configuration syntax warning: " + loc;
+        log += ": Extraneous comma. ";
+        log += "A piece of configuration may have been omitted.";
+        addString(log);
+    }
+};
+
+// Test that trailing commas are allowed.
+TEST_F(TrailingCommasTest, tests) {
+    string txt(R"({
+  "Netconf": {
+    "boot-update": true,
+    "loggers": [
+      {
+        "name": "kea-netconf",
+        "severity": "DEBUG",
+        "debuglevel": 99,
+      },
+    ],
+    "managed-servers": {
+      "dhcp4": {
+        "control-socket": {
+          "socket-name": "/tmp/kea-dhcp4-ctrl.sock",
+          "socket-type": "unix",
+        },
+        "model": "kea-dhcp4-server",
+      },
+      "dhcp6": {
+        "control-socket": {
+          "socket-name": "/tmp/kea-dhcp6-ctrl.sock",
+          "socket-type": "unix",
+        },
+        "model": "kea-dhcp6-server",
+      },
+    },
+    "subscribe-changes": true,
+    "validate-changes": true,
+  },
+})");
+    testParser(txt, ParserContext::PARSER_NETCONF, false);
+
+    addLog("<string>:8.25");
+    addLog("<string>:9.8");
+    addLog("<string>:15.32");
+    addLog("<string>:17.36");
+    addLog("<string>:22.32");
+    addLog("<string>:24.36");
+    addLog("<string>:25.8");
+    addLog("<string>:28.29");
+    addLog("<string>:29.4");
+    EXPECT_TRUE(checkFile());
+
+    // Test with many consecutive commas.
+    boost::replace_all(txt, ",", ",,,,");
+    testParser(txt, ParserContext::PARSER_NETCONF, false);
+}
+
+}  // namespace test
+}  // namespace netconf
+}  // namespace isc
diff --git a/src/bin/netconf/tests/run_unittests.cc b/src/bin/netconf/tests/run_unittests.cc
new file mode 100644
index 0000000..b735a8e
--- /dev/null
+++ b/src/bin/netconf/tests/run_unittests.cc
@@ -0,0 +1,27 @@
+// Copyright (C) 2018 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <gtest/gtest.h>
+#include <util/unittests/run_all.h>
+#include <log/logger_support.h>
+
+int
+main(int argc, char* argv[]) {
+    ::testing::InitGoogleTest(&argc, argv);
+
+    // See the documentation of the KEA_* environment variables in
+    // the developer's guide for info on how to tweak logging
+    isc::log::initLogger();
+
+    // Override --localstatedir value for PID files
+    setenv("KEA_PIDFILE_DIR", TEST_DATA_BUILDDIR, 1);
+
+    int result = RUN_ALL_TESTS();
+
+    return (result);
+}
diff --git a/src/bin/netconf/tests/shtests/Makefile.am b/src/bin/netconf/tests/shtests/Makefile.am
new file mode 100644
index 0000000..d05472c
--- /dev/null
+++ b/src/bin/netconf/tests/shtests/Makefile.am
@@ -0,0 +1,15 @@
+SUBDIRS = .
+
+# Shell tests
+SHTESTS = netconf_tests.sh
+
+# Run shell tests on "make check".
+check_SCRIPTS = $(SHTESTS)
+TESTS = $(SHTESTS)
+
+# As with every file generated by ./configure, clean them up when running
+# "make distclean", but not on "make clean".
+DISTCLEANFILES = $(SHTESTS)
+
+# Don't install shell tests.
+noinst_SCRIPTS = $(SHTESTS)
diff --git a/src/bin/netconf/tests/shtests/Makefile.in b/src/bin/netconf/tests/shtests/Makefile.in
new file mode 100644
index 0000000..8429d42
--- /dev/null
+++ b/src/bin/netconf/tests/shtests/Makefile.in
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+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(am__recursive_targets) check-am install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-TESTS check-am clean clean-generic clean-libtool \
+	cscopelist-am ctags ctags-am distclean distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic \
+	mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/bin/netconf/tests/shtests/netconf_tests.sh.in b/src/bin/netconf/tests/shtests/netconf_tests.sh.in
new file mode 100644
index 0000000..b6ba611
--- /dev/null
+++ b/src/bin/netconf/tests/shtests/netconf_tests.sh.in
@@ -0,0 +1,216 @@
+#!/bin/sh
+
+# Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# shellcheck disable=SC1091
+# SC1091: Not following: ... was not specified as input (see shellcheck -x).
+
+# shellcheck disable=SC2039
+# SC2039: In POSIX sh, 'local' is undefined.
+
+# Exit with error if commands exit with non-zero and if undefined variables are
+# used.
+set -eu
+
+# Path to the temporary configuration file.
+CFG_FILE="@abs_top_builddir@/src/bin/netconf/tests/shtests/test_config.json"
+# Path to the Kea log file.
+LOG_FILE="@abs_top_builddir@/src/bin/netconf/tests/shtests/test.log"
+
+# Kea-netconf configuration to be stored in the configuration file.
+CONFIG="{
+    \"Netconf\":
+    {
+        \"managed-servers\":
+        {
+            \"dhcp4\":
+            {
+                \"comment\": \"simply use defaults...\"
+            }
+        },
+        \"loggers\": [
+        {
+            \"name\": \"kea-netconf\",
+            \"output_options\": [
+                {
+                    \"output\": \"$LOG_FILE\"
+                }
+            ],
+            \"severity\": \"INFO\"
+        }
+        ]
+    }
+}"
+
+# Invalid configuration (syntax error) to check that Kea can check syntax.
+CONFIG_BAD_SYNTAX="{
+    \"Netconf\":
+    {
+        \"boot-update\": BOGUS
+    }
+}"
+
+# Invalid configuration (invalid url) to check that Kea can check syntax.
+CONFIG_BAD_VALUE="{
+    \"Netconf\":
+    {
+        \"managed-servers\":
+        {
+            \"dhcp4\":
+            {
+                \"control-socket\":
+                {
+                    \"socket-type\": \"http\",
+                    \"socket-url\": \"BOGUS\"
+                }
+            }
+        }
+    }
+}"
+
+# Set the location of the executable.
+bin="kea-netconf"
+bin_path="@abs_top_builddir@/src/bin/netconf"
+
+# Import common test library.
+. "@abs_top_builddir@/src/lib/testutils/dhcp_test_lib.sh"
+
+# This test verifies that help can be printed out.
+usage_test() {
+    local test_name="${1}"
+    local parameter="${2}"
+    local expected_code="${3}"
+
+    # Log the start of the test and print test name.
+    test_start "${test_name}"
+
+    # Create correct configuration file.
+    create_config "${CONFIG}"
+
+    # Check it
+    printf "Running command %s.\n" "\"${bin_path}/${bin} -t ${CFG_FILE}\""
+    run_command \
+        "${bin_path}/${bin}" "${parameter}"
+    if [ "${EXIT_CODE}" -ne "${expected_code}" ]; then
+        printf 'ERROR: expected exit code %s, got %s\n' "${expected_code}" "${EXIT_CODE}"
+        clean_exit 1
+    fi
+    test_finish 0
+}
+
+# This test verifies that no argument is not reported as a PID file error.
+no_argument_test() {
+    local test_name="${1}"
+    local expected_code="${2}"
+
+    # Log the start of the test and print test name.
+    test_start "${test_name}"
+
+    # Check it
+    printf "Running command %s.\n" "\"${bin_path}/${bin}\""
+    run_command \
+        "${bin_path}/${bin}"
+    if [ "${EXIT_CODE}" -ne "${expected_code}" ]; then
+        printf 'ERROR: expected exit code %s, got %s\n' "${expected_code}" "${EXIT_CODE}"
+        clean_exit 1
+    fi
+    test_finish 0
+}
+
+# This test verifies that syntax checking works properly. This function
+# requires 3 parameters:
+# test_name
+# config - string with a content of the config (will be written to a file)
+# expected_code - expected exit code returned by kea (0 - success, 1 - failure)
+syntax_check_test() {
+    local test_name="${1}"
+    local config="${2}"
+    local expected_code="${3}"
+
+    # Log the start of the test and print test name.
+    test_start "${test_name}"
+    # Create correct configuration file.
+    create_config "${config}"
+    # Check it
+    printf "Running command %s.\n" "\"${bin_path}/${bin} -t ${CFG_FILE}\""
+    run_command \
+        "${bin_path}/${bin}" -t "${CFG_FILE}"
+    if [ "${EXIT_CODE}" -ne "${expected_code}" ]; then
+        printf 'ERROR: expected exit code %s, got %s\n' "${expected_code}" "${EXIT_CODE}"
+        clean_exit 1
+    fi
+    test_finish 0
+}
+
+# This test verifies that Netconf Agent is shut down gracefully when it
+# receives a SIGINT or SIGTERM signal.
+shutdown_test() {
+    test_name=${1}  # Test name
+    signum=${2}      # Signal number
+    # Log the start of the test and print test name.
+    test_start "${test_name}"
+    # Create new configuration file.
+    create_config "${CONFIG}"
+    # Instruct Netconf Agent to log to the specific file.
+    set_logger
+    # Start Netconf Agent.
+    start_kea ${bin_path}/${bin}
+    # Wait up to 20s for Netconf Agent to start.
+    wait_for_kea 20
+    if [ "${_WAIT_FOR_KEA}" -eq 0 ]; then
+        printf "ERROR: timeout waiting for Netconf Agent to start.\n"
+        clean_exit 1
+    fi
+
+    # Check if it is still running. It could have terminated (e.g. as a result
+    # of configuration failure).
+    get_pid ${bin}
+    if [ "${_GET_PIDS_NUM}" -ne 1 ]; then
+        printf "ERROR: expected one Netconf Agent process to be started. Found %d processes\
+ started.\n" "${_GET_PIDS_NUM}"
+        clean_exit 1
+    fi
+
+    # Check in the log file, how many times server has been configured.
+    # It should be just once on startup.
+    get_reconfigs
+    if [ "${_GET_RECONFIGS}" -ne 1 ]; then
+        printf "ERROR: server been configured %s time(s), but exactly 1 was expected.\n" "${_GET_RECONFIGS}"
+        clean_exit 1
+    else
+        printf "Server successfully configured.\n"
+    fi
+
+    # Send signal to Netconf Agent (SIGTERM, SIGINT etc.)
+    send_signal "${signum}" "${bin}"
+
+    # Now wait for process to log that it is exiting.
+    wait_for_message 10 "DCTL_SHUTDOWN" 1
+    if [ "${_WAIT_FOR_MESSAGE}" -eq 0 ]; then
+        printf "ERROR: Netconf Agent did not log shutdown.\n"
+        clean_exit 1
+    fi
+
+    # Make sure the server is down.
+    wait_for_server_down 5 ${bin}
+    assert_eq 1 "${_WAIT_FOR_SERVER_DOWN}" \
+        "Expected wait_for_server_down return %d, returned %d"
+
+    test_finish 0
+}
+
+version_test "netconf.version"
+usage_test "netconf.invalid-param" "-f" 1
+usage_test "netconf.dash-h" "-h" 1
+usage_test "netconf.dash-v" "-v" 0
+no_argument_test "netconf.no-argument" 1
+shutdown_test "netconf.sigterm_test" 15
+shutdown_test "netconf.sigint_test" 2
+logger_vars_test "netconf.variables"
+syntax_check_test "netconf.syntax_check_success" "${CONFIG}" 0
+syntax_check_test "netconf.syntax_check_bad_syntax" "${CONFIG_BAD_SYNTAX}" 1
+syntax_check_test "netconf.syntax_check_bad_values" "${CONFIG_BAD_VALUE}" 1
diff --git a/src/bin/netconf/tests/test_data_files_config.h.in b/src/bin/netconf/tests/test_data_files_config.h.in
new file mode 100644
index 0000000..78f5c60
--- /dev/null
+++ b/src/bin/netconf/tests/test_data_files_config.h.in
@@ -0,0 +1,9 @@
+// Copyright (C) 2018 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @brief Path to netconf source dir
+#define NETCONF_SRC_DIR "@abs_top_srcdir@/src/bin/netconf"
+#define NETCONF_TEST_DATA_DIR "@abs_top_srcdir@/src/bin/netconf/tests/testdata"
diff --git a/src/bin/netconf/tests/test_libraries.h.in b/src/bin/netconf/tests/test_libraries.h.in
new file mode 100644
index 0000000..f2a5a65
--- /dev/null
+++ b/src/bin/netconf/tests/test_libraries.h.in
@@ -0,0 +1,24 @@
+// Copyright (C) 2018 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef AGENT_TEST_LIBRARIES_H
+#define AGENT_TEST_LIBRARIES_H
+
+#include <config.h>
+
+namespace {
+
+// Names of the libraries used in these tests.  These libraries are built using
+// libtool, so we need to look in the hidden ".libs" directory to locate the
+// .so file.  Note that we access the .so file - libtool creates this as a
+// like to the real shared library.
+
+// Basic library with context_create and three "standard" callouts.
+static const char* BASIC_CALLOUT_LIBRARY = "@abs_builddir@/.libs/libbasic.so";
+
+} // anonymous namespace
+
+#endif // TEST_LIBRARIES_H
diff --git a/src/bin/netconf/tests/testdata/get_config.json b/src/bin/netconf/tests/testdata/get_config.json
new file mode 100644
index 0000000..d08aed2
--- /dev/null
+++ b/src/bin/netconf/tests/testdata/get_config.json
@@ -0,0 +1,24 @@
+{
+    "Netconf": {
+        "boot-update": true,
+        "hooks-libraries": [ ],
+        "managed-servers": {
+            "dhcp4": {
+                "boot-update": true,
+                "control-socket": {
+                    "socket-name": "/tmp/kea4-ctrl-socket",
+                    "socket-type": "unix",
+                    "socket-url": "http://127.0.0.1:8000/"
+                },
+                "model": "kea-dhcp4-server",
+                "subscribe-changes": true,
+                "user-context": {
+                    "comment": "Kea DHCP4 server serving network on floor 13"
+                },
+                "validate-changes": false
+            }
+        },
+        "subscribe-changes": true,
+        "validate-changes": true
+    }
+}
diff --git a/src/bin/netconf/unix_control_socket.cc b/src/bin/netconf/unix_control_socket.cc
new file mode 100644
index 0000000..51ef5d1
--- /dev/null
+++ b/src/bin/netconf/unix_control_socket.cc
@@ -0,0 +1,97 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file unix_control_socket.cc
+/// Contains the UNIX socket derived class for control socket communication.
+
+#include <config.h>
+
+#include <netconf/unix_control_socket.h>
+#include <asiolink/asio_wrapper.h>
+#include <asiolink/io_service.h>
+#include <cc/command_interpreter.h>
+#include <cc/json_feed.h>
+#include <config/client_connection.h>
+#include <config/timeouts.h>
+
+using namespace std;
+using namespace isc::asiolink;
+using namespace isc::config;
+using namespace isc::data;
+
+namespace isc {
+namespace netconf {
+
+template <> ControlSocketBasePtr
+createControlSocket<CfgControlSocket::Type::UNIX>(CfgControlSocketPtr ctrl_sock) {
+    return (UnixControlSocketPtr(new UnixControlSocket(ctrl_sock)));
+}
+
+UnixControlSocket::UnixControlSocket(CfgControlSocketPtr ctrl_sock)
+    : ControlSocketBase(ctrl_sock) {
+}
+
+ConstElementPtr
+UnixControlSocket::configGet(const string& /*service*/) {
+    return (sendCommand(createCommand("config-get")));
+}
+
+ConstElementPtr
+UnixControlSocket::configTest(ConstElementPtr config,
+                              const string& /*service*/) {
+    return (sendCommand(createCommand("config-test", config)));
+}
+
+ConstElementPtr
+UnixControlSocket::configSet(ConstElementPtr config,
+                             const string& /*service*/) {
+    return (sendCommand(createCommand("config-set", config)));
+}
+
+ConstElementPtr
+UnixControlSocket::sendCommand(ConstElementPtr command) {
+    // We are using our own IO service because this method is synchronous.
+    IOServicePtr io_service(new IOService());
+    ClientConnection conn(*io_service);
+    boost::system::error_code received_ec;
+    ConstJSONFeedPtr received_feed;
+
+    conn.start(ClientConnection::SocketPath(getName()),
+               ClientConnection::ControlCommand(command->toWire()),
+               [&io_service, &received_ec, &received_feed]
+               (const boost::system::error_code& ec, ConstJSONFeedPtr feed) {
+                   // Capture error code and parsed data.
+                   received_ec = ec;
+                   received_feed = feed;
+                   // Got the IO service so stop IO service. This causes to
+                   // stop IO service when all handlers have been invoked.
+                   io_service->stopWork();
+               },
+               ClientConnection::Timeout(TIMEOUT_AGENT_FORWARD_COMMAND));
+
+    // Perform this synchronously.
+    io_service->run();
+
+    if (received_ec) {
+        // Got an error.
+        isc_throw(ControlSocketError, "communication error: "
+                  << received_ec.message());
+    }
+
+    if (!received_feed) {
+        // Failed to get the answer.
+        isc_throw(ControlSocketError, "empty response");
+    }
+
+    try {
+        return (received_feed->toElement());
+    } catch (const std::exception& ex) {
+        isc_throw(ControlSocketError, "unparsable response: " << ex.what());
+    }
+}
+
+} // namespace netconf
+} // namespace isc
diff --git a/src/bin/netconf/unix_control_socket.h b/src/bin/netconf/unix_control_socket.h
new file mode 100644
index 0000000..538ae17
--- /dev/null
+++ b/src/bin/netconf/unix_control_socket.h
@@ -0,0 +1,89 @@
+// Copyright (C) 2018-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// @file unix_control_socket.h
+/// Contains declarations for UNIX control socket communication.
+
+#ifndef UNIX_CONTROL_SOCKET_H
+#define UNIX_CONTROL_SOCKET_H
+
+#include <netconf/control_socket.h>
+
+namespace isc {
+namespace netconf {
+
+/// @brief Class for control socket communication over UNIX socket.
+///
+/// This class is the derived class for control socket communication
+/// over UNIX sockets.
+/// This class implements config-get, config-test and config-set.
+class UnixControlSocket : public ControlSocketBase {
+public:
+
+    /// @brief Constructor.
+    ///
+    /// @param ctrl_sock The control socket configuration.
+    UnixControlSocket(CfgControlSocketPtr ctrl_sock);
+
+    /// @brief Destructor (does nothing).
+    virtual ~UnixControlSocket() = default;
+
+    /// @brief Get configuration.
+    ///
+    /// Call config-get over the control socket.
+    ///
+    /// @param service The target service (ignored).
+    /// @return The JSON element answer of config-get.
+    /// @throw ControlSocketError when a communication error occurs.
+    virtual data::ConstElementPtr configGet(const std::string& service);
+
+    /// @brief Test configuration.
+    ///
+    /// Call config-test over the control socket.
+    ///
+    /// @param service The target service (ignored).
+    /// @param config The configuration to test.
+    /// @return The JSON element answer of config-test.
+    /// @throw ControlSocketError when a communication error occurs.
+    virtual data::ConstElementPtr configTest(data::ConstElementPtr config,
+                                             const std::string& service);
+
+    /// @brief Set configuration.
+    ///
+    /// Call config-set over the control socket.
+    ///
+    /// @param config The configuration to set.
+    /// @param service The target service (ignored).
+    /// @return The JSON element answer of config-set.
+    /// @throw ControlSocketError when a communication error occurs.
+    virtual data::ConstElementPtr configSet(data::ConstElementPtr config,
+                                            const std::string& service);
+
+private:
+    /// @brief Perform the actual communication.
+    ///
+    /// @note This method is synchronous, i.e. it blocks until it finishes
+    /// and returns.
+    ///
+    /// @param command The command to send.
+    /// @return The answer.
+    data::ConstElementPtr sendCommand(data::ConstElementPtr command);
+};
+
+/// @brief Type definition for the pointer to the @c UnixControlSocket.
+typedef boost::shared_ptr<UnixControlSocket> UnixControlSocketPtr;
+
+/// @brief Factory template specialization for unix control sockets.
+///
+/// @param ctrl_sock The control socket configuration.
+/// @return A pointer to a unix control socket communication object.
+template <> ControlSocketBasePtr
+createControlSocket<CfgControlSocket::Type::UNIX>(CfgControlSocketPtr ctrl_sock);
+
+} // namespace netconf
+} // namespace isc
+
+#endif // UNIX_CONTROL_SOCKET_H