Adding upstream version 1.0.18.upstream/1.0.18upstream

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

50 files changed, 18209 insertions, 0 deletions

diff --git a/src/daemon/Makefile.am b/src/daemon/Makefile.am
new file mode 100644
index 0000000..42240a4
--- /dev/null
+++ b/src/daemon/Makefile.am
@@ -0,0 +1,180 @@
+AM_CFLAGS = -I $(top_srcdir)/include $(LLDP_CFLAGS)
+AM_CPPFLAGS = $(LLDP_CPPFLAGS)
+AM_LDFLAGS = $(LLDP_LDFLAGS)
+BUILT_SOURCES =
+CLEANFILES =
+
+sbin_PROGRAMS = lldpd
+man_MANS = lldpd.8
+
+noinst_LTLIBRARIES = liblldpd.la
+
+## Convenience library for lldpd and tests
+nodist_liblldpd_la_SOURCES =
+liblldpd_la_SOURCES  = \
+	frame.h frame.c \
+	lldp-tlv.h \
+	client.c \
+	priv.c \
+	privsep.c privsep_io.c privsep_fd.c \
+	interfaces.c \
+	event.c lldpd.c \
+	pattern.c \
+	bitmap.c \
+	probes.d trace.h \
+	protocols/lldp.c \
+	protocols/cdp.c \
+	protocols/cdp.h \
+	protocols/sonmp.c \
+	protocols/sonmp.h \
+	protocols/edp.c \
+	protocols/edp.h
+liblldpd_la_CFLAGS   = $(AM_CFLAGS) @libevent_CFLAGS@ @libcap_CFLAGS@
+liblldpd_la_CPPFLAGS = $(AM_CPPFLAGS) -DSYSCONFDIR='"$(sysconfdir)"' -DLLDPCLI_PATH='"$(sbindir)/lldpcli"'
+liblldpd_la_LIBADD   = \
+	$(top_builddir)/src/libcommon-daemon-client.la \
+	$(top_builddir)/src/libcommon-daemon-lib.la @libevent_LIBS@ @libcap_LIBS@
+
+## lldpd
+lldpd_SOURCES = main.c
+lldpd_LDFLAGS = $(AM_LDFLAGS) $(LLDP_BIN_LDFLAGS)
+lldpd_LDADD   = liblldpd.la @libevent_LDFLAGS@
+
+if HOST_OS_LINUX
+liblldpd_la_SOURCES += \
+	forward-linux.c \
+	interfaces-linux.c \
+	netlink.c \
+	dmi-linux.c \
+	priv-linux.c
+endif
+if HOST_OS_DRAGONFLY
+liblldpd_la_SOURCES += \
+	forward-bsd.c \
+	interfaces-bpf.c \
+	interfaces-bsd.c \
+	dmi-dummy.c \
+	priv-bsd.c
+endif
+if HOST_OS_FREEBSD
+liblldpd_la_SOURCES += \
+	forward-bsd.c \
+	interfaces-bpf.c \
+	interfaces-bsd.c \
+	dmi-freebsd.c \
+	priv-bsd.c
+endif
+if HOST_OS_OPENBSD
+liblldpd_la_SOURCES += \
+	interfaces-bpf.c \
+	forward-bsd.c \
+	interfaces-bsd.c \
+	dmi-openbsd.c \
+	priv-bsd.c
+endif
+if HOST_OS_NETBSD
+liblldpd_la_SOURCES += \
+	forward-bsd.c \
+	interfaces-bpf.c \
+	interfaces-bsd.c \
+	dmi-dummy.c \
+	priv-bsd.c
+endif
+if HOST_OS_OSX
+liblldpd_la_SOURCES += \
+	forward-bsd.c \
+	interfaces-bpf.c \
+	interfaces-bsd.c \
+	dmi-osx.c \
+	priv-bsd.c
+liblldpd_la_LDFLAGS  = $(AM_LDFLAGS)
+liblldpd_la_LDFLAGS += -framework Foundation
+liblldpd_la_LDFLAGS += -framework CoreFoundation -framework IOKit
+liblldpd_la_LDFLAGS += -framework IOKit
+endif
+if HOST_OS_SOLARIS
+liblldpd_la_SOURCES += \
+	forward-solaris.c \
+	interfaces-bpf.c \
+	interfaces-solaris.c \
+	dmi-dummy.c \
+	priv-bsd.c
+endif
+
+# seccomp support
+if USE_SECCOMP
+BUILT_SOURCES += syscall-names.h
+CLEANFILES    += syscall-names.h syscall-names.h.tmp
+syscall-names.h:
+	$(AM_V_GEN)
+	$(AM_V_at)echo "#include <sys/syscall.h>" | $(CPP) -dM - > $@.tmp ;\
+	echo "static const char *syscall_names[] = {" > $@ ;\
+	grep '^#define __NR_' $@.tmp | \
+		LC_ALL=C sed -r -n -e 's/^\#define[ \t]+__NR_([a-z0-9_]+)[ \t]+([0-9]+)(.*)/ [\2] = "\1",/p' >> $@ ;\
+	echo "};" >> $@ ;\
+	rm $@.tmp
+nodist_liblldpd_la_SOURCES += syscall-names.h
+liblldpd_la_SOURCES += priv-seccomp.c
+liblldpd_la_CFLAGS  += @libseccomp_CFLAGS@
+liblldpd_la_LIBADD  += @libseccomp_LIBS@
+endif
+
+# Add SNMP support if needed
+if USE_SNMP
+noinst_LTLIBRARIES       += liblldpd-snmp.la
+liblldpd_snmp_la_SOURCES  = agent.c agent_priv.c agent.h
+liblldpd_snmp_la_CFLAGS   = $(liblldpd_la_CFLAGS) @NETSNMP_CFLAGS@
+liblldpd_snmp_la_CPPFLAGS = $(liblldpd_la_CPPFLAGS)
+liblldpd_la_LIBADD       += liblldpd-snmp.la
+lldpd_LDADD              += @NETSNMP_LIBS@
+endif
+
+## Systemtap/DTrace
+EXTRA_DIST = dtrace2systemtap.awk
+if ENABLE_SYSTEMTAP
+BUILT_SOURCES += probes.h
+CLEANFILES    += probes.h lldpd.stp
+probes.h: probes.d
+	$(AM_V_GEN)
+	$(AM_V_at)$(DTRACE) -C -h -s $< -o $@
+probes.o: probes.d
+	$(AM_V_GEN)
+	$(AM_V_at)$(DTRACE) -C -G -s $< -o $@
+lldpd_LDADD += probes.o
+
+lldpd.stp: probes.d $(srcdir)/dtrace2systemtap.awk $(top_builddir)/config.status
+	$(AM_V_GEN)$(AWK) -f $(srcdir)/dtrace2systemtap.awk -v sbindir=$(sbindir) $< > $@ || ( rm -f $@ ; exit 1 )
+tapsetdir = $(datadir)/systemtap/tapset
+tapset_DATA = lldpd.stp
+endif
+
+## libevent
+if LIBEVENT_EMBEDDED
+event.c: $(top_builddir)/libevent/libevent.la
+$(top_builddir)/libevent/libevent.la: $(top_srcdir)/libevent/*.c $(top_srcdir)/libevent/*.h
+	(cd $(top_builddir)/libevent && $(MAKE))
+endif
+
+## systemd service file
+if HAVE_SYSTEMDSYSTEMUNITDIR
+systemdsystemunit_DATA = lldpd.service
+endif
+
+if HAVE_SYSUSERSDIR
+sysusers_DATA = lldpd.sysusers.conf
+endif
+
+if HOST_OS_LINUX
+if HAVE_APPARMORDIR
+apparmor_DATA = usr.sbin.lldpd
+endif
+endif
+
+TEMPLATES   = lldpd.8    lldpd.service    lldpd.sysusers.conf    usr.sbin.lldpd
+EXTRA_DIST += lldpd.8.in lldpd.service.in lldpd.sysusers.conf.in usr.sbin.lldpd.in
+CLEANFILES += $(TEMPLATES)
+lldpd.8: lldpd.8.in
+lldpd.service: lldpd.service.in
+lldpd.sysusers.conf: lldpd.sysusers.conf.in
+usr.sbin.lldpd: usr.sbin.lldpd.in
+include $(top_srcdir)/edit.am
diff --git a/src/daemon/Makefile.in b/src/daemon/Makefile.in
new file mode 100644
index 0000000..397289e
--- /dev/null
+++ b/src/daemon/Makefile.in
@@ -0,0 +1,1545 @@
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+# This Makefile.in is free software; the Free Software Foundation
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+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
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+@HOST_OS_LINUX_TRUE@	forward-linux.c \
+@HOST_OS_LINUX_TRUE@	interfaces-linux.c \
+@HOST_OS_LINUX_TRUE@	netlink.c \
+@HOST_OS_LINUX_TRUE@	dmi-linux.c \
+@HOST_OS_LINUX_TRUE@	priv-linux.c
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+@HOST_OS_DRAGONFLY_TRUE@	dmi-dummy.c \
+@HOST_OS_DRAGONFLY_TRUE@	priv-bsd.c
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+@HOST_OS_FREEBSD_TRUE@	forward-bsd.c \
+@HOST_OS_FREEBSD_TRUE@	interfaces-bpf.c \
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+@HOST_OS_FREEBSD_TRUE@	dmi-freebsd.c \
+@HOST_OS_FREEBSD_TRUE@	priv-bsd.c
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+@HOST_OS_OPENBSD_TRUE@	priv-bsd.c
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+@HOST_OS_NETBSD_TRUE@	interfaces-bpf.c \
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+@HOST_OS_NETBSD_TRUE@	dmi-dummy.c \
+@HOST_OS_NETBSD_TRUE@	priv-bsd.c
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+	liblldpd_la-bitmap.lo protocols/liblldpd_la-lldp.lo \
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+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
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+
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+	list='$(am__tagged_files)'; \
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+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
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+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
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+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$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; \
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+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
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+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
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+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
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+	done
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+check: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) check-am
+all-am: Makefile $(PROGRAMS) $(LTLIBRARIES) $(MANS) $(DATA)
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+	done
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+	$(MAKE) $(AM_MAKEFLAGS) install-am
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
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+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
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+	-rm -f protocols/$(am__dirstamp)
+
+maintainer-clean-generic:
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+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(BUILT_SOURCES)" || rm -f $(BUILT_SOURCES)
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
+	clean-sbinPROGRAMS mostlyclean-am
+
+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/liblldpd_la-bitmap.Plo
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+	-rm -f ./$(DEPDIR)/liblldpd_la-dmi-dummy.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-dmi-freebsd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-dmi-linux.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-dmi-openbsd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-dmi-osx.Plo
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+	-rm -f ./$(DEPDIR)/liblldpd_la-forward-bsd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-forward-linux.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-forward-solaris.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-frame.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-interfaces-bpf.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-interfaces-bsd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-interfaces-linux.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-interfaces-solaris.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-interfaces.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-lldpd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-netlink.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-pattern.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-priv-bsd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-priv-linux.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-priv-seccomp.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-priv.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-privsep.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-privsep_fd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-privsep_io.Plo
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+	-rm -f ./$(DEPDIR)/liblldpd_snmp_la-agent_priv.Plo
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+	-rm -f protocols/$(DEPDIR)/liblldpd_la-cdp.Plo
+	-rm -f protocols/$(DEPDIR)/liblldpd_la-edp.Plo
+	-rm -f protocols/$(DEPDIR)/liblldpd_la-lldp.Plo
+	-rm -f protocols/$(DEPDIR)/liblldpd_la-sonmp.Plo
+	-rm -f Makefile
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+	distclean-tags
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+	-rm -f ./$(DEPDIR)/liblldpd_la-dmi-freebsd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-dmi-linux.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-dmi-openbsd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-dmi-osx.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-event.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-forward-bsd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-forward-linux.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-forward-solaris.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-frame.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-interfaces-bpf.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-interfaces-bsd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-interfaces-linux.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-interfaces-solaris.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-interfaces.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-lldpd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-netlink.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-pattern.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-priv-bsd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-priv-linux.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-priv-seccomp.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-priv.Plo
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+	-rm -f ./$(DEPDIR)/liblldpd_la-privsep_fd.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_la-privsep_io.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_snmp_la-agent.Plo
+	-rm -f ./$(DEPDIR)/liblldpd_snmp_la-agent_priv.Plo
+	-rm -f ./$(DEPDIR)/main.Po
+	-rm -f protocols/$(DEPDIR)/liblldpd_la-cdp.Plo
+	-rm -f protocols/$(DEPDIR)/liblldpd_la-edp.Plo
+	-rm -f protocols/$(DEPDIR)/liblldpd_la-lldp.Plo
+	-rm -f protocols/$(DEPDIR)/liblldpd_la-sonmp.Plo
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+.MAKE: all check install install-am install-exec install-strip
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+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
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+	uninstall-systemdsystemunitDATA uninstall-sysusersDATA \
+	uninstall-tapsetDATA
+
+.PRECIOUS: Makefile
+
+@USE_SECCOMP_TRUE@syscall-names.h:
+@USE_SECCOMP_TRUE@	$(AM_V_GEN)
+@USE_SECCOMP_TRUE@	$(AM_V_at)echo "#include <sys/syscall.h>" | $(CPP) -dM - > $@.tmp ;\
+@USE_SECCOMP_TRUE@	echo "static const char *syscall_names[] = {" > $@ ;\
+@USE_SECCOMP_TRUE@	grep '^#define __NR_' $@.tmp | \
+@USE_SECCOMP_TRUE@		LC_ALL=C sed -r -n -e 's/^\#define[ \t]+__NR_([a-z0-9_]+)[ \t]+([0-9]+)(.*)/ [\2] = "\1",/p' >> $@ ;\
+@USE_SECCOMP_TRUE@	echo "};" >> $@ ;\
+@USE_SECCOMP_TRUE@	rm $@.tmp
+@ENABLE_SYSTEMTAP_TRUE@probes.h: probes.d
+@ENABLE_SYSTEMTAP_TRUE@	$(AM_V_GEN)
+@ENABLE_SYSTEMTAP_TRUE@	$(AM_V_at)$(DTRACE) -C -h -s $< -o $@
+@ENABLE_SYSTEMTAP_TRUE@probes.o: probes.d
+@ENABLE_SYSTEMTAP_TRUE@	$(AM_V_GEN)
+@ENABLE_SYSTEMTAP_TRUE@	$(AM_V_at)$(DTRACE) -C -G -s $< -o $@
+
+@ENABLE_SYSTEMTAP_TRUE@lldpd.stp: probes.d $(srcdir)/dtrace2systemtap.awk $(top_builddir)/config.status
+@ENABLE_SYSTEMTAP_TRUE@	$(AM_V_GEN)$(AWK) -f $(srcdir)/dtrace2systemtap.awk -v sbindir=$(sbindir) $< > $@ || ( rm -f $@ ; exit 1 )
+
+@LIBEVENT_EMBEDDED_TRUE@event.c: $(top_builddir)/libevent/libevent.la
+@LIBEVENT_EMBEDDED_TRUE@$(top_builddir)/libevent/libevent.la: $(top_srcdir)/libevent/*.c $(top_srcdir)/libevent/*.h
+@LIBEVENT_EMBEDDED_TRUE@	(cd $(top_builddir)/libevent && $(MAKE))
+lldpd.8: lldpd.8.in
+lldpd.service: lldpd.service.in
+lldpd.sysusers.conf: lldpd.sysusers.conf.in
+usr.sbin.lldpd: usr.sbin.lldpd.in
+
+$(TEMPLATES): Makefile
+	$(AM_V_GEN)$(MKDIR_P) $(@D) && $(edit) $(srcdir)/$@.in > $@.tmp && mv $@.tmp $@
+
+# 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/daemon/agent.c b/src/daemon/agent.c
new file mode 100644
index 0000000..cd631a8
--- /dev/null
+++ b/src/daemon/agent.c
@@ -0,0 +1,1939 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#include <assert.h>
+
+#include "agent.h"
+
+#if HAVE_NET_SNMP_AGENT_UTIL_FUNCS_H
+#  include <net-snmp/agent/util_funcs.h>
+#else
+/* The above header may be buggy. We just need this function. */
+int header_generic(struct variable *, oid *, size_t *, int, size_t *, WriteMethod **);
+#endif
+
+/* For net-snmp */
+extern int register_sysORTable(oid *, size_t, const char *);
+extern int unregister_sysORTable(oid *, size_t);
+
+/* Global variable because no way to pass it as argument. Should not be used
+ * elsewhere. */
+#define scfg agent_scfg
+struct lldpd *agent_scfg;
+
+static uint8_t
+swap_bits(uint8_t n)
+{
+	n = ((n & 0xF0) >> 4) | ((n & 0x0F) << 4);
+	n = ((n & 0xCC) >> 2) | ((n & 0x33) << 2);
+	n = ((n & 0xAA) >> 1) | ((n & 0x55) << 1);
+
+	return n;
+};
+
+extern struct timeval starttime;
+static long int
+lastchange(struct lldpd_port *port)
+{
+	if (port->p_lastchange > starttime.tv_sec)
+		return (port->p_lastchange - starttime.tv_sec) * 100;
+	return 0;
+}
+
+/* -------------
+  Helper functions to build header_*indexed_table() functions.
+  Those functions keep an internal state. They are not reentrant!
+*/
+struct header_index {
+	struct variable *vp;
+	oid *name;	/* Requested/returned OID */
+	size_t *length; /* Length of above OID */
+	int exact;
+	oid best[MAX_OID_LEN]; /* Best OID */
+	size_t best_len;       /* Best OID length */
+	void *entity;	       /* Best entity */
+};
+static struct header_index header_idx;
+
+static int
+header_index_init(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	/* If the requested OID name is less than OID prefix we
+	   handle, adjust it to our prefix. */
+	if ((snmp_oid_compare(name, *length, vp->name, vp->namelen)) < 0) {
+		memcpy(name, vp->name, sizeof(oid) * vp->namelen);
+		*length = vp->namelen;
+	}
+	/* Now, we can only handle OID matching our prefix. Those two
+	   tests are not really necessary since NetSNMP won't give us
+	   OID "above" our prefix. But this makes unit tests
+	   easier.  */
+	if (*length < vp->namelen) return 0;
+	if (memcmp(name, vp->name, vp->namelen * sizeof(oid))) return 0;
+
+	if (write_method != NULL) *write_method = 0;
+	*var_len = sizeof(long);
+
+	/* Initialize our header index structure */
+	header_idx.vp = vp;
+	header_idx.name = name;
+	header_idx.length = length;
+	header_idx.exact = exact;
+	header_idx.best_len = 0;
+	header_idx.entity = NULL;
+	return 1;
+}
+
+static int
+header_index_add(oid *index, size_t len, void *entity)
+{
+	int result;
+	oid *target;
+	size_t target_len;
+
+	target = header_idx.name + header_idx.vp->namelen;
+	target_len = *header_idx.length - header_idx.vp->namelen;
+	if ((result = snmp_oid_compare(index, len, target, target_len)) < 0)
+		return 0; /* Too small. */
+	if (result == 0) return header_idx.exact;
+	if (header_idx.best_len == 0 ||
+	    (snmp_oid_compare(index, len, header_idx.best, header_idx.best_len) < 0)) {
+		memcpy(header_idx.best, index, sizeof(oid) * len);
+		header_idx.best_len = len;
+		header_idx.entity = entity;
+	}
+	return 0; /* No best match yet. */
+}
+
+static void *
+header_index_best()
+{
+	if (header_idx.entity == NULL) return NULL;
+	if (header_idx.exact) return NULL;
+	memcpy(header_idx.name + header_idx.vp->namelen, header_idx.best,
+	    sizeof(oid) * header_idx.best_len);
+	*header_idx.length = header_idx.vp->namelen + header_idx.best_len;
+	return header_idx.entity;
+}
+/* ----------------------------- */
+
+static struct lldpd_hardware *
+header_portindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		oid index[1] = { hardware->h_ifindex };
+		if (header_index_add(index, 1, hardware)) return hardware;
+	}
+	return header_index_best();
+}
+
+#ifdef ENABLE_LLDPMED
+static struct lldpd_med_policy *
+header_pmedindexed_policy_table(struct variable *vp, oid *name, size_t *length,
+    int exact, size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	int i;
+	oid index[2];
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		for (i = 0; i < LLDP_MED_APPTYPE_LAST; i++) {
+			if (hardware->h_lport.p_med_policy[i].type != i + 1) continue;
+			index[0] = hardware->h_ifindex;
+			index[1] = i + 1;
+			if (header_index_add(index, 2,
+				&hardware->h_lport.p_med_policy[i]))
+				return &hardware->h_lport.p_med_policy[i];
+		}
+	}
+	return header_index_best();
+}
+
+static struct lldpd_med_loc *
+header_pmedindexed_location_table(struct variable *vp, oid *name, size_t *length,
+    int exact, size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	int i;
+	oid index[2];
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		for (i = 0; i < LLDP_MED_LOCFORMAT_LAST; i++) {
+			if (hardware->h_lport.p_med_location[i].format != i + 1)
+				continue;
+			index[0] = hardware->h_ifindex;
+			index[1] = i + 2;
+			if (header_index_add(index, 2,
+				&hardware->h_lport.p_med_location[i]))
+				return &hardware->h_lport.p_med_location[i];
+		}
+	}
+	return header_index_best();
+}
+#endif
+
+static struct lldpd_port *
+header_tprindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method, int withmed)
+{
+	struct lldpd_hardware *hardware;
+	struct lldpd_port *port;
+	oid index[3];
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			if (SMART_HIDDEN(port)) continue;
+#ifdef ENABLE_LLDPMED
+			if (withmed && !port->p_chassis->c_med_cap_available) continue;
+#endif
+			index[0] = lastchange(port);
+			index[1] = hardware->h_ifindex;
+			index[2] = port->p_chassis->c_index;
+			if (header_index_add(index, 3, port)) return port;
+		}
+	}
+	return header_index_best();
+}
+
+static struct lldpd_mgmt *
+header_ipindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_chassis *chassis = LOCAL_CHASSIS(scfg);
+	struct lldpd_mgmt *mgmt;
+	oid index[2 + 16];
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (mgmt, &chassis->c_mgmt, m_entries) {
+		int i;
+		switch (mgmt->m_family) {
+		case LLDPD_AF_IPV4:
+			index[0] = 1;
+			break;
+		case LLDPD_AF_IPV6:
+			index[0] = 2;
+			break;
+		default:
+			assert(0);
+		}
+		index[1] = mgmt->m_addrsize;
+		if (index[1] > sizeof(index) - 2) continue; /* Odd... */
+		for (i = 0; i < index[1]; i++)
+			index[i + 2] = mgmt->m_addr.octets[i];
+		if (header_index_add(index, 2 + index[1], mgmt)) return mgmt;
+	}
+
+	return header_index_best();
+}
+
+static struct lldpd_mgmt *
+header_tpripindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	struct lldpd_port *port;
+	struct lldpd_mgmt *mgmt;
+	oid index[5 + 16];
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			if (SMART_HIDDEN(port)) continue;
+			TAILQ_FOREACH (mgmt, &port->p_chassis->c_mgmt, m_entries) {
+				int i;
+				index[0] = lastchange(port);
+				index[1] = hardware->h_ifindex;
+				index[2] = port->p_chassis->c_index;
+				switch (mgmt->m_family) {
+				case LLDPD_AF_IPV4:
+					index[3] = 1;
+					break;
+				case LLDPD_AF_IPV6:
+					index[3] = 2;
+					break;
+				default:
+					assert(0);
+				}
+				index[4] = mgmt->m_addrsize;
+				if (index[4] > sizeof(index) - 5) continue; /* Odd... */
+				for (i = 0; i < index[4]; i++)
+					index[i + 5] = mgmt->m_addr.octets[i];
+				if (header_index_add(index, 5 + index[4], mgmt))
+					return mgmt;
+			}
+		}
+	}
+	return header_index_best();
+}
+
+#ifdef ENABLE_CUSTOM
+static struct lldpd_custom *
+header_tprcustomindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	struct lldpd_port *port;
+	struct lldpd_custom *custom;
+	oid index[8];
+	oid idx;
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			if (SMART_HIDDEN(port)) continue;
+			idx = 1;
+			TAILQ_FOREACH (custom, &port->p_custom_list, next) {
+				index[0] = lastchange(port);
+				index[1] = hardware->h_ifindex;
+				index[2] = port->p_chassis->c_index;
+				index[3] = custom->oui[0];
+				index[4] = custom->oui[1];
+				index[5] = custom->oui[2];
+				index[6] = custom->subtype;
+				index[7] = idx++;
+				if (header_index_add(index, 8, custom)) return custom;
+			}
+		}
+	}
+	return header_index_best();
+}
+#endif
+
+#ifdef ENABLE_LLDPMED
+#  define TPR_VARIANT_MED_POLICY 2
+#  define TPR_VARIANT_MED_LOCATION 3
+static void *
+header_tprmedindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method, int variant)
+{
+	struct lldpd_hardware *hardware;
+	struct lldpd_port *port;
+	int j;
+	oid index[4];
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			if (SMART_HIDDEN(port)) continue;
+			if (!port->p_chassis->c_med_cap_available) continue;
+			switch (variant) {
+			case TPR_VARIANT_MED_POLICY:
+				for (j = 0; j < LLDP_MED_APPTYPE_LAST; j++) {
+					if (port->p_med_policy[j].type != j + 1)
+						continue;
+					index[0] = lastchange(port);
+					index[1] = hardware->h_ifindex;
+					index[2] = port->p_chassis->c_index;
+					index[3] = j + 1;
+					if (header_index_add(index, 4,
+						&port->p_med_policy[j]))
+						return &port->p_med_policy[j];
+				}
+				break;
+			case TPR_VARIANT_MED_LOCATION:
+				for (j = 0; j < LLDP_MED_LOCFORMAT_LAST; j++) {
+					if (port->p_med_location[j].format != j + 1)
+						continue;
+					index[0] = lastchange(port);
+					index[1] = hardware->h_ifindex;
+					index[2] = port->p_chassis->c_index;
+					index[3] = j + 2;
+					if (header_index_add(index, 4,
+						&port->p_med_location[j]))
+						return &port->p_med_location[j];
+				}
+				break;
+			}
+		}
+	}
+	return header_index_best();
+}
+#endif
+
+#ifdef ENABLE_DOT1
+static struct lldpd_vlan *
+header_pvindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	struct lldpd_vlan *vlan;
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (vlan, &hardware->h_lport.p_vlans, v_entries) {
+			oid index[2] = { hardware->h_ifindex, vlan->v_vid };
+			if (header_index_add(index, 2, vlan)) return vlan;
+		}
+	}
+	return header_index_best();
+}
+
+static struct lldpd_vlan *
+header_tprvindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	struct lldpd_port *port;
+	struct lldpd_vlan *vlan;
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			if (SMART_HIDDEN(port)) continue;
+			TAILQ_FOREACH (vlan, &port->p_vlans, v_entries) {
+				oid index[4] = { lastchange(port), hardware->h_ifindex,
+					port->p_chassis->c_index, vlan->v_vid };
+				if (header_index_add(index, 4, vlan)) return vlan;
+			}
+		}
+	}
+	return header_index_best();
+}
+
+static struct lldpd_ppvid *
+header_pppvidindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	struct lldpd_ppvid *ppvid;
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (ppvid, &hardware->h_lport.p_ppvids, p_entries) {
+			oid index[2] = { hardware->h_ifindex, ppvid->p_ppvid };
+			if (header_index_add(index, 2, ppvid)) return ppvid;
+		}
+	}
+	return header_index_best();
+}
+
+static struct lldpd_ppvid *
+header_tprppvidindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	struct lldpd_port *port;
+	struct lldpd_ppvid *ppvid;
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			if (SMART_HIDDEN(port)) continue;
+			TAILQ_FOREACH (ppvid, &port->p_ppvids, p_entries) {
+				oid index[4] = { lastchange(port), hardware->h_ifindex,
+					port->p_chassis->c_index, ppvid->p_ppvid };
+				if (header_index_add(index, 4, ppvid)) return ppvid;
+			}
+		}
+	}
+	return header_index_best();
+}
+
+static struct lldpd_pi *
+header_ppiindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	struct lldpd_pi *pi;
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (pi, &hardware->h_lport.p_pids, p_entries) {
+			oid index[2] = { hardware->h_ifindex,
+				frame_checksum((const u_char *)pi->p_pi, pi->p_pi_len,
+				    0) };
+			if (header_index_add(index, 2, pi)) return pi;
+		}
+	}
+	return header_index_best();
+}
+
+static struct lldpd_pi *
+header_tprpiindexed_table(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	struct lldpd_port *port;
+	struct lldpd_pi *pi;
+
+	if (!header_index_init(vp, name, length, exact, var_len, write_method))
+		return NULL;
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			if (SMART_HIDDEN(port)) continue;
+			TAILQ_FOREACH (pi, &port->p_pids, p_entries) {
+				oid index[4] = { lastchange(port), hardware->h_ifindex,
+					port->p_chassis->c_index,
+					frame_checksum((const u_char *)pi->p_pi,
+					    pi->p_pi_len, 0) };
+				if (header_index_add(index, 4, pi)) return pi;
+			}
+		}
+	}
+	return header_index_best();
+}
+#endif
+
+/* Scalars */
+#define LLDP_SNMP_TXINTERVAL 1
+#define LLDP_SNMP_TXMULTIPLIER 2
+#define LLDP_SNMP_REINITDELAY 3
+#define LLDP_SNMP_TXDELAY 4
+#define LLDP_SNMP_NOTIFICATION 5
+#define LLDP_SNMP_LASTUPDATE 6
+#define LLDP_SNMP_STATS_INSERTS 7
+#define LLDP_SNMP_STATS_DELETES 8
+#define LLDP_SNMP_STATS_DROPS 9
+#define LLDP_SNMP_STATS_AGEOUTS 10
+/* Chassis */
+#define LLDP_SNMP_CIDSUBTYPE 1
+#define LLDP_SNMP_CID 2
+#define LLDP_SNMP_SYSNAME 3
+#define LLDP_SNMP_SYSDESCR 4
+#define LLDP_SNMP_SYSCAP_SUP 5
+#define LLDP_SNMP_SYSCAP_ENA 6
+/* Stats */
+#define LLDP_SNMP_STATS_TX 2
+#define LLDP_SNMP_STATS_RX_DISCARDED 4
+#define LLDP_SNMP_STATS_RX_ERRORS 5
+#define LLDP_SNMP_STATS_RX 6
+#define LLDP_SNMP_STATS_RX_TLVDISCARDED 7
+#define LLDP_SNMP_STATS_RX_TLVUNRECOGNIZED 8
+#define LLDP_SNMP_STATS_RX_AGEOUTS 9
+/* Ports */
+#define LLDP_SNMP_PIDSUBTYPE 2
+#define LLDP_SNMP_PID 3
+#define LLDP_SNMP_PORTDESC 4
+#define LLDP_SNMP_DOT3_AUTONEG_SUPPORT 5
+#define LLDP_SNMP_DOT3_AUTONEG_ENABLED 6
+#define LLDP_SNMP_DOT3_AUTONEG_ADVERTISED 7
+#define LLDP_SNMP_DOT3_AUTONEG_MAU 8
+#define LLDP_SNMP_DOT3_AGG_STATUS 9
+#define LLDP_SNMP_DOT3_AGG_ID 10
+#define LLDP_SNMP_DOT3_MFS 11
+#define LLDP_SNMP_DOT3_POWER_DEVICETYPE 12
+#define LLDP_SNMP_DOT3_POWER_SUPPORT 13
+#define LLDP_SNMP_DOT3_POWER_ENABLED 14
+#define LLDP_SNMP_DOT3_POWER_PAIRCONTROL 15
+#define LLDP_SNMP_DOT3_POWER_PAIRS 16
+#define LLDP_SNMP_DOT3_POWER_CLASS 17
+#define LLDP_SNMP_DOT3_POWER_TYPE 18
+#define LLDP_SNMP_DOT3_POWER_SOURCE 19
+#define LLDP_SNMP_DOT3_POWER_PRIORITY 20
+#define LLDP_SNMP_DOT3_POWER_REQUESTED 21
+#define LLDP_SNMP_DOT3_POWER_ALLOCATED 22
+#define LLDP_SNMP_DOT1_PVID 23
+/* Vlans */
+#define LLDP_SNMP_DOT1_VLANNAME 1
+/* Protocol VLAN IDs */
+#define LLDP_SNMP_DOT1_PPVLAN_SUPPORTED 2
+#define LLDP_SNMP_DOT1_PPVLAN_ENABLED 3
+/* Protocol Identity */
+#define LLDP_SNMP_DOT1_PI 1
+/* Management address */
+#define LLDP_SNMP_ADDR_LEN 1
+#define LLDP_SNMP_ADDR_IFSUBTYPE 2
+#define LLDP_SNMP_ADDR_IFID 3
+#define LLDP_SNMP_ADDR_OID 4
+/* Custom TLVs */
+#define LLDP_SNMP_ORG_DEF_INFO 1
+/* LLDP-MED */
+#define LLDP_SNMP_MED_CAP_AVAILABLE 1
+#define LLDP_SNMP_MED_CAP_ENABLED 2
+#define LLDP_SNMP_MED_CLASS 3
+#define LLDP_SNMP_MED_HW 4
+#define LLDP_SNMP_MED_FW 5
+#define LLDP_SNMP_MED_SW 6
+#define LLDP_SNMP_MED_SN 7
+#define LLDP_SNMP_MED_MANUF 8
+#define LLDP_SNMP_MED_MODEL 9
+#define LLDP_SNMP_MED_ASSET 10
+#define LLDP_SNMP_MED_POLICY_VID 11
+#define LLDP_SNMP_MED_POLICY_PRIO 12
+#define LLDP_SNMP_MED_POLICY_DSCP 13
+#define LLDP_SNMP_MED_POLICY_UNKNOWN 14
+#define LLDP_SNMP_MED_POLICY_TAGGED 15
+#define LLDP_SNMP_MED_LOCATION 16
+#define LLDP_SNMP_MED_POE_DEVICETYPE 17
+#define LLDP_SNMP_MED_POE_PSE_POWERVAL 19
+#define LLDP_SNMP_MED_POE_PSE_POWERSOURCE 20
+#define LLDP_SNMP_MED_POE_PSE_POWERPRIORITY 21
+#define LLDP_SNMP_MED_POE_PD_POWERVAL 22
+#define LLDP_SNMP_MED_POE_PD_POWERSOURCE 23
+#define LLDP_SNMP_MED_POE_PD_POWERPRIORITY 24
+
+/* The following macro should be used anytime where the selected OID
+   is finally not returned (for example, when the associated data is
+   not available). In this case, we retry the function with the next
+   OID. */
+#define TRYNEXT(X)                                              \
+  do {                                                          \
+    if (!exact && (name[*length - 1] < MAX_SUBID))              \
+      return X(vp, name, length, exact, var_len, write_method); \
+    return NULL;                                                \
+  } while (0)
+
+static u_char *
+agent_h_scalars(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	static unsigned long long_ret;
+	struct lldpd_hardware *hardware;
+	struct lldpd_port *port;
+
+	if (header_generic(vp, name, length, exact, var_len, write_method)) return NULL;
+
+	switch (vp->magic) {
+	case LLDP_SNMP_TXINTERVAL:
+		long_ret = (scfg->g_config.c_tx_interval + 999) / 1000;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_TXMULTIPLIER:
+		long_ret = scfg->g_config.c_tx_hold;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_REINITDELAY:
+		long_ret = 1;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_TXDELAY:
+		long_ret = LLDPD_TX_MSGDELAY;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_NOTIFICATION:
+		long_ret = 5;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_LASTUPDATE:
+		long_ret = 0;
+		TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+			/* Check if the last removal of a remote port on this local port
+			 * was the last change. */
+			if (hardware->h_lport.p_lastremove > long_ret)
+				long_ret = hardware->h_lport.p_lastremove;
+			/* Check if any change on the existing remote ports was the last
+			 * change. */
+			TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+				if (SMART_HIDDEN(port)) continue;
+				if (port->p_lastchange > long_ret)
+					long_ret = port->p_lastchange;
+			}
+		}
+		if (long_ret) long_ret = (long_ret - starttime.tv_sec) * 100;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_STATS_INSERTS:
+		/* We assume this is equal to valid frames received on all ports */
+		long_ret = 0;
+		TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries)
+			long_ret += hardware->h_insert_cnt;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_STATS_AGEOUTS:
+		long_ret = 0;
+		TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries)
+			long_ret += hardware->h_ageout_cnt;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_STATS_DELETES:
+		long_ret = 0;
+		TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries)
+			long_ret += hardware->h_delete_cnt;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_STATS_DROPS:
+		long_ret = 0;
+		TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries)
+			long_ret += hardware->h_drop_cnt;
+		return (u_char *)&long_ret;
+	default:
+		break;
+	}
+	return NULL;
+}
+
+#ifdef ENABLE_LLDPMED
+static u_char *
+agent_v_med_power(struct variable *vp, size_t *var_len, struct lldpd_med_power *power)
+{
+	static unsigned long long_ret;
+
+	switch (vp->magic) {
+	case LLDP_SNMP_MED_POE_DEVICETYPE:
+		switch (power->devicetype) {
+		case LLDP_MED_POW_TYPE_PSE:
+			long_ret = 2;
+			break;
+		case LLDP_MED_POW_TYPE_PD:
+			long_ret = 3;
+			break;
+		case 0:
+			long_ret = 4;
+			break;
+		default:
+			long_ret = 1;
+		}
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_MED_POE_PSE_POWERVAL:
+	case LLDP_SNMP_MED_POE_PD_POWERVAL:
+		if (((vp->magic == LLDP_SNMP_MED_POE_PSE_POWERVAL) &&
+			(power->devicetype == LLDP_MED_POW_TYPE_PSE)) ||
+		    ((vp->magic == LLDP_SNMP_MED_POE_PD_POWERVAL) &&
+			(power->devicetype == LLDP_MED_POW_TYPE_PD))) {
+			long_ret = power->val;
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_MED_POE_PSE_POWERSOURCE:
+		if (power->devicetype == LLDP_MED_POW_TYPE_PSE) {
+			switch (power->source) {
+			case LLDP_MED_POW_SOURCE_PRIMARY:
+				long_ret = 2;
+				break;
+			case LLDP_MED_POW_SOURCE_BACKUP:
+				long_ret = 3;
+				break;
+			default:
+				long_ret = 1;
+			}
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_MED_POE_PD_POWERSOURCE:
+		if (power->devicetype == LLDP_MED_POW_TYPE_PD) {
+			switch (power->source) {
+			case LLDP_MED_POW_SOURCE_PSE:
+				long_ret = 2;
+				break;
+			case LLDP_MED_POW_SOURCE_LOCAL:
+				long_ret = 3;
+				break;
+			case LLDP_MED_POW_SOURCE_BOTH:
+				long_ret = 4;
+				break;
+			default:
+				long_ret = 1;
+			}
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_MED_POE_PSE_POWERPRIORITY:
+	case LLDP_SNMP_MED_POE_PD_POWERPRIORITY:
+		if (((vp->magic == LLDP_SNMP_MED_POE_PSE_POWERPRIORITY) &&
+			(power->devicetype == LLDP_MED_POW_TYPE_PSE)) ||
+		    ((vp->magic == LLDP_SNMP_MED_POE_PD_POWERPRIORITY) &&
+			(power->devicetype == LLDP_MED_POW_TYPE_PD))) {
+			switch (power->priority) {
+			case LLDP_MED_POW_PRIO_CRITICAL:
+				long_ret = 2;
+				break;
+			case LLDP_MED_POW_PRIO_HIGH:
+				long_ret = 3;
+				break;
+			case LLDP_MED_POW_PRIO_LOW:
+				long_ret = 4;
+				break;
+			default:
+				long_ret = 1;
+			}
+			return (u_char *)&long_ret;
+		}
+		break;
+	}
+
+	return NULL;
+}
+static u_char *
+agent_h_local_med_power(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_med_power *power = NULL;
+	struct lldpd_hardware *hardware;
+	int pse = 0;
+
+	if (!LOCAL_CHASSIS(scfg)->c_med_cap_available) return NULL;
+	if (header_generic(vp, name, length, exact, var_len, write_method)) return NULL;
+
+	/* LLDP-MED requires only one device type for all
+	   ports. Moreover, a PSE can only have one power source. At
+	   least, all PD values are global and not per-port. We try to
+	   do our best. For device type, we decide on the number of
+	   PD/PSE ports. */
+	TAILQ_FOREACH (hardware, &scfg->g_hardware, h_entries) {
+		if (hardware->h_lport.p_med_power.devicetype == LLDP_MED_POW_TYPE_PSE) {
+			pse++;
+			if (pse == 1) /* Take this port as a reference */
+				power = &hardware->h_lport.p_med_power;
+		} else if (hardware->h_lport.p_med_power.devicetype ==
+		    LLDP_MED_POW_TYPE_PD) {
+			pse--;
+			if (pse == -1) /* Take this one instead */
+				power = &hardware->h_lport.p_med_power;
+		}
+	}
+	if (power) {
+		u_char *a;
+		if ((a = agent_v_med_power(vp, var_len, power)) != NULL) return a;
+	}
+	TRYNEXT(agent_h_local_med_power);
+}
+static u_char *
+agent_h_remote_med_power(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_port *port;
+	u_char *a;
+
+	if ((port = header_tprindexed_table(vp, name, length, exact, var_len,
+		 write_method, 1)) == NULL)
+		return NULL;
+
+	if ((a = agent_v_med_power(vp, var_len, &port->p_med_power)) != NULL) return a;
+	TRYNEXT(agent_h_remote_med_power);
+}
+
+static u_char *
+agent_v_med(struct variable *vp, size_t *var_len, struct lldpd_chassis *chassis,
+    struct lldpd_port *port)
+{
+	static unsigned long long_ret;
+	static uint8_t bit;
+
+	switch (vp->magic) {
+	case LLDP_SNMP_MED_CLASS:
+		long_ret = chassis->c_med_type;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_MED_CAP_AVAILABLE:
+		*var_len = 1;
+		bit = swap_bits(chassis->c_med_cap_available);
+		return (u_char *)&bit;
+	case LLDP_SNMP_MED_CAP_ENABLED:
+		if (!port) break;
+		*var_len = 1;
+		bit = swap_bits(port->p_med_cap_enabled);
+		return (u_char *)&bit;
+
+#  define LLDP_H_MED(magic, variable)       \
+  case magic:                               \
+    if (chassis->variable) {                \
+      *var_len = strlen(chassis->variable); \
+      return (u_char *)chassis->variable;   \
+    }                                       \
+    break
+
+		LLDP_H_MED(LLDP_SNMP_MED_HW, c_med_hw);
+		LLDP_H_MED(LLDP_SNMP_MED_SW, c_med_sw);
+		LLDP_H_MED(LLDP_SNMP_MED_FW, c_med_fw);
+		LLDP_H_MED(LLDP_SNMP_MED_SN, c_med_sn);
+		LLDP_H_MED(LLDP_SNMP_MED_MANUF, c_med_manuf);
+		LLDP_H_MED(LLDP_SNMP_MED_MODEL, c_med_model);
+		LLDP_H_MED(LLDP_SNMP_MED_ASSET, c_med_asset);
+	}
+	return NULL;
+}
+static u_char *
+agent_h_local_med(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	u_char *a;
+
+	if (!LOCAL_CHASSIS(scfg)->c_med_cap_available) return NULL;
+	if (header_generic(vp, name, length, exact, var_len, write_method)) return NULL;
+
+	if ((a = agent_v_med(vp, var_len, LOCAL_CHASSIS(scfg), NULL)) != NULL) return a;
+	TRYNEXT(agent_h_local_med);
+}
+
+static u_char *
+agent_h_remote_med(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_port *port;
+	u_char *a;
+
+	if ((port = header_tprindexed_table(vp, name, length, exact, var_len,
+		 write_method, 1)) == NULL)
+		return NULL;
+
+	if ((a = agent_v_med(vp, var_len, port->p_chassis, port)) != NULL) return a;
+	TRYNEXT(agent_h_remote_med);
+}
+
+static u_char *
+agent_v_med_policy(struct variable *vp, size_t *var_len,
+    struct lldpd_med_policy *policy)
+{
+	static unsigned long long_ret;
+
+	switch (vp->magic) {
+	case LLDP_SNMP_MED_POLICY_VID:
+		long_ret = policy->vid;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_MED_POLICY_PRIO:
+		long_ret = policy->priority;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_MED_POLICY_DSCP:
+		long_ret = policy->dscp;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_MED_POLICY_UNKNOWN:
+		long_ret = policy->unknown ? 1 : 2;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_MED_POLICY_TAGGED:
+		long_ret = policy->tagged ? 1 : 2;
+		return (u_char *)&long_ret;
+	default:
+		return NULL;
+	}
+}
+static u_char *
+agent_h_remote_med_policy(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_med_policy *policy;
+
+	if ((policy = (struct lldpd_med_policy *)header_tprmedindexed_table(vp, name,
+		 length, exact, var_len, write_method, TPR_VARIANT_MED_POLICY)) == NULL)
+		return NULL;
+
+	return agent_v_med_policy(vp, var_len, policy);
+}
+static u_char *
+agent_h_local_med_policy(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_med_policy *policy;
+
+	if ((policy = (struct lldpd_med_policy *)header_pmedindexed_policy_table(vp,
+		 name, length, exact, var_len, write_method)) == NULL)
+		return NULL;
+
+	return agent_v_med_policy(vp, var_len, policy);
+}
+
+static u_char *
+agent_v_med_location(struct variable *vp, size_t *var_len,
+    struct lldpd_med_loc *location)
+{
+	switch (vp->magic) {
+	case LLDP_SNMP_MED_LOCATION:
+		*var_len = location->data_len;
+		return (u_char *)location->data;
+	default:
+		return NULL;
+	}
+}
+static u_char *
+agent_h_remote_med_location(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_med_loc *location;
+
+	if ((location = (struct lldpd_med_loc *)header_tprmedindexed_table(vp, name,
+		 length, exact, var_len, write_method, TPR_VARIANT_MED_LOCATION)) ==
+	    NULL)
+		return NULL;
+
+	return agent_v_med_location(vp, var_len, location);
+}
+static u_char *
+agent_h_local_med_location(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_med_loc *location;
+
+	if ((location = (struct lldpd_med_loc *)header_pmedindexed_location_table(vp,
+		 name, length, exact, var_len, write_method)) == NULL)
+		return NULL;
+
+	return agent_v_med_location(vp, var_len, location);
+}
+#endif
+
+static u_char *
+agent_v_chassis(struct variable *vp, size_t *var_len, struct lldpd_chassis *chassis)
+{
+	static uint8_t bit;
+	static unsigned long long_ret;
+
+	switch (vp->magic) {
+	case LLDP_SNMP_CIDSUBTYPE:
+		long_ret = chassis->c_id_subtype;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_CID:
+		*var_len = chassis->c_id_len;
+		return (u_char *)chassis->c_id;
+	case LLDP_SNMP_SYSNAME:
+		if (!chassis->c_name || *chassis->c_name == '\0') break;
+		*var_len = strlen(chassis->c_name);
+		return (u_char *)chassis->c_name;
+	case LLDP_SNMP_SYSDESCR:
+		if (!chassis->c_descr || *chassis->c_descr == '\0') break;
+		*var_len = strlen(chassis->c_descr);
+		return (u_char *)chassis->c_descr;
+	case LLDP_SNMP_SYSCAP_SUP:
+		*var_len = 1;
+		bit = swap_bits(chassis->c_cap_available);
+		return (u_char *)&bit;
+	case LLDP_SNMP_SYSCAP_ENA:
+		*var_len = 1;
+		bit = swap_bits(chassis->c_cap_enabled);
+		return (u_char *)&bit;
+	default:
+		break;
+	}
+	return NULL;
+}
+static u_char *
+agent_h_local_chassis(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	u_char *a;
+
+	if (header_generic(vp, name, length, exact, var_len, write_method)) return NULL;
+
+	if ((a = agent_v_chassis(vp, var_len, LOCAL_CHASSIS(scfg))) != NULL) return a;
+	TRYNEXT(agent_h_local_chassis);
+}
+static u_char *
+agent_h_remote_chassis(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_port *port;
+	u_char *a;
+
+	if ((port = header_tprindexed_table(vp, name, length, exact, var_len,
+		 write_method, 0)) == NULL)
+		return NULL;
+
+	if ((a = agent_v_chassis(vp, var_len, port->p_chassis)) != NULL) return a;
+	TRYNEXT(agent_h_remote_chassis);
+}
+
+static u_char *
+agent_h_stats(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	static unsigned long long_ret;
+	struct lldpd_hardware *hardware;
+
+	if ((hardware = header_portindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	switch (vp->magic) {
+	case LLDP_SNMP_STATS_TX:
+		long_ret = hardware->h_tx_cnt;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_STATS_RX:
+		long_ret = hardware->h_rx_cnt;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_STATS_RX_DISCARDED:
+	case LLDP_SNMP_STATS_RX_ERRORS:
+		/* We discard only frame with errors. Therefore, the two values
+		 * are equal */
+		long_ret = hardware->h_rx_discarded_cnt;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_STATS_RX_TLVDISCARDED:
+	case LLDP_SNMP_STATS_RX_TLVUNRECOGNIZED:
+		/* We discard only unrecognized TLV. Malformed TLV
+		   implies dropping the whole frame */
+		long_ret = hardware->h_rx_unrecognized_cnt;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_STATS_RX_AGEOUTS:
+		long_ret = hardware->h_ageout_cnt;
+		return (u_char *)&long_ret;
+	default:
+		return NULL;
+	}
+}
+
+#ifdef ENABLE_DOT1
+static u_char *
+agent_v_vlan(struct variable *vp, size_t *var_len, struct lldpd_vlan *vlan)
+{
+	switch (vp->magic) {
+	case LLDP_SNMP_DOT1_VLANNAME:
+		*var_len = strlen(vlan->v_name);
+		return (u_char *)vlan->v_name;
+	default:
+		return NULL;
+	}
+}
+static u_char *
+agent_h_local_vlan(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_vlan *vlan;
+
+	if ((vlan = header_pvindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	return agent_v_vlan(vp, var_len, vlan);
+}
+static u_char *
+agent_h_remote_vlan(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_vlan *vlan;
+
+	if ((vlan = header_tprvindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	return agent_v_vlan(vp, var_len, vlan);
+}
+
+static u_char *
+agent_v_ppvid(struct variable *vp, size_t *var_len, struct lldpd_ppvid *ppvid)
+{
+	static unsigned long long_ret;
+
+	switch (vp->magic) {
+	case LLDP_SNMP_DOT1_PPVLAN_SUPPORTED:
+		long_ret = (ppvid->p_cap_status & LLDP_PPVID_CAP_SUPPORTED) ? 1 : 2;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_DOT1_PPVLAN_ENABLED:
+		long_ret = (ppvid->p_cap_status & LLDP_PPVID_CAP_ENABLED) ? 1 : 2;
+		return (u_char *)&long_ret;
+	default:
+		return NULL;
+	}
+}
+static u_char *
+agent_h_local_ppvid(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_ppvid *ppvid;
+
+	if ((ppvid = header_pppvidindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	return agent_v_ppvid(vp, var_len, ppvid);
+}
+
+static u_char *
+agent_h_remote_ppvid(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_ppvid *ppvid;
+
+	if ((ppvid = header_tprppvidindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	return agent_v_ppvid(vp, var_len, ppvid);
+}
+
+static u_char *
+agent_v_pi(struct variable *vp, size_t *var_len, struct lldpd_pi *pi)
+{
+	switch (vp->magic) {
+	case LLDP_SNMP_DOT1_PI:
+		*var_len = pi->p_pi_len;
+		return (u_char *)pi->p_pi;
+	default:
+		return NULL;
+	}
+}
+static u_char *
+agent_h_local_pi(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_pi *pi;
+
+	if ((pi = header_ppiindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	return agent_v_pi(vp, var_len, pi);
+}
+static u_char *
+agent_h_remote_pi(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_pi *pi;
+
+	if ((pi = header_tprpiindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	return agent_v_pi(vp, var_len, pi);
+}
+#endif
+
+static u_char *
+agent_v_port(struct variable *vp, size_t *var_len, struct lldpd_port *port)
+{
+#ifdef ENABLE_DOT3
+	static uint16_t short_ret;
+	static uint8_t bit;
+#endif
+	static unsigned long long_ret;
+
+	switch (vp->magic) {
+	case LLDP_SNMP_PIDSUBTYPE:
+		long_ret = port->p_id_subtype;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_PID:
+		*var_len = port->p_id_len;
+		return (u_char *)port->p_id;
+	case LLDP_SNMP_PORTDESC:
+		if (!port->p_descr || *port->p_descr == '\0') break;
+		*var_len = strlen(port->p_descr);
+		return (u_char *)port->p_descr;
+#ifdef ENABLE_DOT3
+	case LLDP_SNMP_DOT3_AUTONEG_SUPPORT:
+		long_ret = 2 - port->p_macphy.autoneg_support;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_DOT3_AUTONEG_ENABLED:
+		long_ret = 2 - port->p_macphy.autoneg_enabled;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_DOT3_AUTONEG_ADVERTISED:
+		*var_len = 2;
+		short_ret = htons(port->p_macphy.autoneg_advertised);
+		return (u_char *)&short_ret;
+	case LLDP_SNMP_DOT3_AUTONEG_MAU:
+		long_ret = port->p_macphy.mau_type;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_DOT3_AGG_STATUS:
+		bit = swap_bits((port->p_aggregid > 0) ? 3 : 0);
+		*var_len = 1;
+		return (u_char *)&bit;
+	case LLDP_SNMP_DOT3_AGG_ID:
+		long_ret = port->p_aggregid;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_DOT3_MFS:
+		if (port->p_mfs) {
+			long_ret = port->p_mfs;
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_DEVICETYPE:
+		if (port->p_power.devicetype) {
+			long_ret =
+			    (port->p_power.devicetype == LLDP_DOT3_POWER_PSE) ? 1 : 2;
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_SUPPORT:
+		if (port->p_power.devicetype) {
+			long_ret = (port->p_power.supported) ? 1 : 2;
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_ENABLED:
+		if (port->p_power.devicetype) {
+			long_ret = (port->p_power.enabled) ? 1 : 2;
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_PAIRCONTROL:
+		if (port->p_power.devicetype) {
+			long_ret = (port->p_power.paircontrol) ? 1 : 2;
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_PAIRS:
+		if (port->p_power.devicetype) {
+			long_ret = port->p_power.pairs;
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_CLASS:
+		if (port->p_power.devicetype && port->p_power.class) {
+			long_ret = port->p_power.class;
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_TYPE:
+		if (port->p_power.devicetype &&
+		    port->p_power.powertype != LLDP_DOT3_POWER_8023AT_OFF) {
+			*var_len = 1;
+			bit = (((port->p_power.powertype ==
+				    LLDP_DOT3_POWER_8023AT_TYPE1) ?
+				       0 :
+				       1)
+				  << 7) |
+			    (((port->p_power.devicetype == LLDP_DOT3_POWER_PSE) ? 0 : 1)
+				<< 6);
+			return (u_char *)&bit;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_SOURCE:
+		if (port->p_power.devicetype &&
+		    port->p_power.powertype != LLDP_DOT3_POWER_8023AT_OFF) {
+			*var_len = 1;
+			bit = swap_bits(port->p_power.source % (1 << 2));
+			return (u_char *)&bit;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_PRIORITY:
+		if (port->p_power.devicetype &&
+		    port->p_power.powertype != LLDP_DOT3_POWER_8023AT_OFF) {
+			/* See 30.12.2.1.16. This seems defined in reverse order... */
+			long_ret = 4 - port->p_power.priority;
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_REQUESTED:
+		if (port->p_power.devicetype &&
+		    port->p_power.powertype != LLDP_DOT3_POWER_8023AT_OFF) {
+			long_ret = port->p_power.requested;
+			return (u_char *)&long_ret;
+		}
+		break;
+	case LLDP_SNMP_DOT3_POWER_ALLOCATED:
+		if (port->p_power.devicetype &&
+		    port->p_power.powertype != LLDP_DOT3_POWER_8023AT_OFF) {
+			long_ret = port->p_power.allocated;
+			return (u_char *)&long_ret;
+		}
+		break;
+#endif
+#ifdef ENABLE_DOT1
+	case LLDP_SNMP_DOT1_PVID:
+		long_ret = port->p_pvid;
+		return (u_char *)&long_ret;
+#endif
+	default:
+		break;
+	}
+	return NULL;
+}
+static u_char *
+agent_h_remote_port(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_port *port;
+	u_char *a;
+
+	if ((port = header_tprindexed_table(vp, name, length, exact, var_len,
+		 write_method, 0)) == NULL)
+		return NULL;
+
+	if ((a = agent_v_port(vp, var_len, port)) != NULL) return a;
+	TRYNEXT(agent_h_remote_port);
+}
+static u_char *
+agent_h_local_port(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_hardware *hardware;
+	u_char *a;
+
+	if ((hardware = header_portindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	if ((a = agent_v_port(vp, var_len, &hardware->h_lport)) != NULL) return a;
+	TRYNEXT(agent_h_local_port);
+}
+
+static u_char *
+agent_v_management(struct variable *vp, size_t *var_len, struct lldpd_mgmt *mgmt)
+{
+	static unsigned long int long_ret;
+	static oid zeroDotZero[2] = { 0, 0 };
+
+	switch (vp->magic) {
+	case LLDP_SNMP_ADDR_LEN:
+		long_ret = mgmt->m_addrsize + 1;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_ADDR_IFSUBTYPE:
+		if (mgmt->m_iface != 0)
+			long_ret = LLDP_MGMT_IFACE_IFINDEX;
+		else
+			long_ret = 1;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_ADDR_IFID:
+		long_ret = mgmt->m_iface;
+		return (u_char *)&long_ret;
+	case LLDP_SNMP_ADDR_OID:
+		*var_len = sizeof(zeroDotZero);
+		return (u_char *)zeroDotZero;
+	default:
+		return NULL;
+	}
+}
+static u_char *
+agent_h_local_management(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+
+	struct lldpd_mgmt *mgmt;
+
+	if ((mgmt = header_ipindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	return agent_v_management(vp, var_len, mgmt);
+}
+static u_char *
+agent_h_remote_management(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_mgmt *mgmt;
+
+	if ((mgmt = header_tpripindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	return agent_v_management(vp, var_len, mgmt);
+}
+
+#ifdef ENABLE_CUSTOM
+static u_char *
+agent_v_custom(struct variable *vp, size_t *var_len, struct lldpd_custom *custom)
+{
+	switch (vp->magic) {
+	case LLDP_SNMP_ORG_DEF_INFO:
+		*var_len = custom->oui_info_len;
+		return (u_char *)custom->oui_info;
+	default:
+		return NULL;
+	}
+}
+static u_char *
+agent_h_remote_custom(struct variable *vp, oid *name, size_t *length, int exact,
+    size_t *var_len, WriteMethod **write_method)
+{
+	struct lldpd_custom *custom;
+
+	if ((custom = header_tprcustomindexed_table(vp, name, length, exact, var_len,
+		 write_method)) == NULL)
+		return NULL;
+
+	return agent_v_custom(vp, var_len, custom);
+}
+#endif
+
+/*
+  Here is how it works: a agent_h_*() function will handle incoming
+  requests. It will use an appropriate header_*indexed_table()
+  function to grab the appropriate structure that was queried (a port,
+  a chassis, ...). It will then delegate to a agent_v_*() function the
+  responsability to extract the appropriate answer.
+
+  agent_h_*() functions and header_*indexed_table() are not shared
+  between remote and not remote version while agent_v_*() functions
+  are the same for both version.
+*/
+
+/* For testing purposes, keep this structure ordered by increasing OID! */
+struct variable8 agent_lldp_vars[] = {
+	/* Scalars */
+	{ LLDP_SNMP_TXINTERVAL, ASN_INTEGER, RONLY, agent_h_scalars, 3, { 1, 1, 1 } },
+	{ LLDP_SNMP_TXMULTIPLIER, ASN_INTEGER, RONLY, agent_h_scalars, 3, { 1, 1, 2 } },
+	{ LLDP_SNMP_REINITDELAY, ASN_INTEGER, RONLY, agent_h_scalars, 3, { 1, 1, 3 } },
+	{ LLDP_SNMP_TXDELAY, ASN_INTEGER, RONLY, agent_h_scalars, 3, { 1, 1, 4 } },
+	{ LLDP_SNMP_NOTIFICATION, ASN_INTEGER, RONLY, agent_h_scalars, 3, { 1, 1, 5 } },
+	{ LLDP_SNMP_LASTUPDATE, ASN_TIMETICKS, RONLY, agent_h_scalars, 3, { 1, 2, 1 } },
+	{ LLDP_SNMP_STATS_INSERTS, ASN_GAUGE, RONLY, agent_h_scalars, 3, { 1, 2, 2 } },
+	{ LLDP_SNMP_STATS_DELETES, ASN_GAUGE, RONLY, agent_h_scalars, 3, { 1, 2, 3 } },
+	{ LLDP_SNMP_STATS_DROPS, ASN_GAUGE, RONLY, agent_h_scalars, 3, { 1, 2, 4 } },
+	{ LLDP_SNMP_STATS_AGEOUTS, ASN_GAUGE, RONLY, agent_h_scalars, 3, { 1, 2, 5 } },
+	/* Stats */
+	{ LLDP_SNMP_STATS_TX, ASN_COUNTER, RONLY, agent_h_stats, 5, { 1, 2, 6, 1, 2 } },
+	{ LLDP_SNMP_STATS_RX_DISCARDED, ASN_COUNTER, RONLY, agent_h_stats, 5,
+	    { 1, 2, 7, 1, 2 } },
+	{ LLDP_SNMP_STATS_RX_ERRORS, ASN_COUNTER, RONLY, agent_h_stats, 5,
+	    { 1, 2, 7, 1, 3 } },
+	{ LLDP_SNMP_STATS_RX, ASN_COUNTER, RONLY, agent_h_stats, 5, { 1, 2, 7, 1, 4 } },
+	{ LLDP_SNMP_STATS_RX_TLVDISCARDED, ASN_COUNTER, RONLY, agent_h_stats, 5,
+	    { 1, 2, 7, 1, 5 } },
+	{ LLDP_SNMP_STATS_RX_TLVUNRECOGNIZED, ASN_COUNTER, RONLY, agent_h_stats, 5,
+	    { 1, 2, 7, 1, 6 } },
+	{ LLDP_SNMP_STATS_RX_AGEOUTS, ASN_GAUGE, RONLY, agent_h_stats, 5,
+	    { 1, 2, 7, 1, 7 } },
+	/* Local chassis */
+	{ LLDP_SNMP_CIDSUBTYPE, ASN_INTEGER, RONLY, agent_h_local_chassis, 3,
+	    { 1, 3, 1 } },
+	{ LLDP_SNMP_CID, ASN_OCTET_STR, RONLY, agent_h_local_chassis, 3, { 1, 3, 2 } },
+	{ LLDP_SNMP_SYSNAME, ASN_OCTET_STR, RONLY, agent_h_local_chassis, 3,
+	    { 1, 3, 3 } },
+	{ LLDP_SNMP_SYSDESCR, ASN_OCTET_STR, RONLY, agent_h_local_chassis, 3,
+	    { 1, 3, 4 } },
+	{ LLDP_SNMP_SYSCAP_SUP, ASN_OCTET_STR, RONLY, agent_h_local_chassis, 3,
+	    { 1, 3, 5 } },
+	{ LLDP_SNMP_SYSCAP_ENA, ASN_OCTET_STR, RONLY, agent_h_local_chassis, 3,
+	    { 1, 3, 6 } },
+	/* Local ports */
+	{ LLDP_SNMP_PIDSUBTYPE, ASN_INTEGER, RONLY, agent_h_local_port, 5,
+	    { 1, 3, 7, 1, 2 } },
+	{ LLDP_SNMP_PID, ASN_OCTET_STR, RONLY, agent_h_local_port, 5,
+	    { 1, 3, 7, 1, 3 } },
+	{ LLDP_SNMP_PORTDESC, ASN_OCTET_STR, RONLY, agent_h_local_port, 5,
+	    { 1, 3, 7, 1, 4 } },
+	/* Local management address */
+	{ LLDP_SNMP_ADDR_LEN, ASN_INTEGER, RONLY, agent_h_local_management, 5,
+	    { 1, 3, 8, 1, 3 } },
+	{ LLDP_SNMP_ADDR_IFSUBTYPE, ASN_INTEGER, RONLY, agent_h_local_management, 5,
+	    { 1, 3, 8, 1, 4 } },
+	{ LLDP_SNMP_ADDR_IFID, ASN_INTEGER, RONLY, agent_h_local_management, 5,
+	    { 1, 3, 8, 1, 5 } },
+	{ LLDP_SNMP_ADDR_OID, ASN_OBJECT_ID, RONLY, agent_h_local_management, 5,
+	    { 1, 3, 8, 1, 6 } },
+	/* Remote ports */
+	{ LLDP_SNMP_CIDSUBTYPE, ASN_INTEGER, RONLY, agent_h_remote_chassis, 5,
+	    { 1, 4, 1, 1, 4 } },
+	{ LLDP_SNMP_CID, ASN_OCTET_STR, RONLY, agent_h_remote_chassis, 5,
+	    { 1, 4, 1, 1, 5 } },
+	{ LLDP_SNMP_PIDSUBTYPE, ASN_INTEGER, RONLY, agent_h_remote_port, 5,
+	    { 1, 4, 1, 1, 6 } },
+	{ LLDP_SNMP_PID, ASN_OCTET_STR, RONLY, agent_h_remote_port, 5,
+	    { 1, 4, 1, 1, 7 } },
+	{ LLDP_SNMP_PORTDESC, ASN_OCTET_STR, RONLY, agent_h_remote_port, 5,
+	    { 1, 4, 1, 1, 8 } },
+	{ LLDP_SNMP_SYSNAME, ASN_OCTET_STR, RONLY, agent_h_remote_chassis, 5,
+	    { 1, 4, 1, 1, 9 } },
+	{ LLDP_SNMP_SYSDESCR, ASN_OCTET_STR, RONLY, agent_h_remote_chassis, 5,
+	    { 1, 4, 1, 1, 10 } },
+	{ LLDP_SNMP_SYSCAP_SUP, ASN_OCTET_STR, RONLY, agent_h_remote_chassis, 5,
+	    { 1, 4, 1, 1, 11 } },
+	{ LLDP_SNMP_SYSCAP_ENA, ASN_OCTET_STR, RONLY, agent_h_remote_chassis, 5,
+	    { 1, 4, 1, 1, 12 } },
+	/* Remote management address */
+	{ LLDP_SNMP_ADDR_IFSUBTYPE, ASN_INTEGER, RONLY, agent_h_remote_management, 5,
+	    { 1, 4, 2, 1, 3 } },
+	{ LLDP_SNMP_ADDR_IFID, ASN_INTEGER, RONLY, agent_h_remote_management, 5,
+	    { 1, 4, 2, 1, 4 } },
+	{ LLDP_SNMP_ADDR_OID, ASN_OBJECT_ID, RONLY, agent_h_remote_management, 5,
+	    { 1, 4, 2, 1, 5 } },
+#ifdef ENABLE_CUSTOM
+	/* Custom TLVs */
+	{ LLDP_SNMP_ORG_DEF_INFO, ASN_OCTET_STR, RONLY, agent_h_remote_custom, 5,
+	    { 1, 4, 4, 1, 4 } },
+#endif
+#ifdef ENABLE_DOT3
+	/* Dot3, local ports */
+	{ LLDP_SNMP_DOT3_AUTONEG_SUPPORT, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 1, 1, 1 } },
+	{ LLDP_SNMP_DOT3_AUTONEG_ENABLED, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 1, 1, 2 } },
+	{ LLDP_SNMP_DOT3_AUTONEG_ADVERTISED, ASN_OCTET_STR, RONLY, agent_h_local_port,
+	    8, { 1, 5, 4623, 1, 2, 1, 1, 3 } },
+	{ LLDP_SNMP_DOT3_AUTONEG_MAU, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 1, 1, 4 } },
+	{ LLDP_SNMP_DOT3_POWER_DEVICETYPE, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 1 } },
+	{ LLDP_SNMP_DOT3_POWER_SUPPORT, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 2 } },
+	{ LLDP_SNMP_DOT3_POWER_ENABLED, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 3 } },
+	{ LLDP_SNMP_DOT3_POWER_PAIRCONTROL, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 4 } },
+	{ LLDP_SNMP_DOT3_POWER_PAIRS, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 5 } },
+	{ LLDP_SNMP_DOT3_POWER_CLASS, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 6 } },
+	{ LLDP_SNMP_DOT3_POWER_TYPE, ASN_OCTET_STR, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 7 } },
+	{ LLDP_SNMP_DOT3_POWER_SOURCE, ASN_OCTET_STR, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 8 } },
+	{ LLDP_SNMP_DOT3_POWER_PRIORITY, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 9 } },
+	{ LLDP_SNMP_DOT3_POWER_REQUESTED, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 10 } },
+	{ LLDP_SNMP_DOT3_POWER_ALLOCATED, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 2, 1, 11 } },
+	{ LLDP_SNMP_DOT3_AGG_STATUS, ASN_OCTET_STR, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 3, 1, 1 } },
+	{ LLDP_SNMP_DOT3_AGG_ID, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 3, 1, 2 } },
+	{ LLDP_SNMP_DOT3_MFS, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 4623, 1, 2, 4, 1, 1 } },
+#endif
+/* Dot3, remote ports */
+#ifdef ENABLE_DOT3
+	{ LLDP_SNMP_DOT3_AUTONEG_SUPPORT, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 1, 1, 1 } },
+	{ LLDP_SNMP_DOT3_AUTONEG_ENABLED, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 1, 1, 2 } },
+	{ LLDP_SNMP_DOT3_AUTONEG_ADVERTISED, ASN_OCTET_STR, RONLY, agent_h_remote_port,
+	    8, { 1, 5, 4623, 1, 3, 1, 1, 3 } },
+	{ LLDP_SNMP_DOT3_AUTONEG_MAU, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 1, 1, 4 } },
+	{ LLDP_SNMP_DOT3_POWER_DEVICETYPE, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 1 } },
+	{ LLDP_SNMP_DOT3_POWER_SUPPORT, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 2 } },
+	{ LLDP_SNMP_DOT3_POWER_ENABLED, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 3 } },
+	{ LLDP_SNMP_DOT3_POWER_PAIRCONTROL, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 4 } },
+	{ LLDP_SNMP_DOT3_POWER_PAIRS, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 5 } },
+	{ LLDP_SNMP_DOT3_POWER_CLASS, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 6 } },
+	{ LLDP_SNMP_DOT3_POWER_TYPE, ASN_OCTET_STR, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 7 } },
+	{ LLDP_SNMP_DOT3_POWER_SOURCE, ASN_OCTET_STR, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 8 } },
+	{ LLDP_SNMP_DOT3_POWER_PRIORITY, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 9 } },
+	{ LLDP_SNMP_DOT3_POWER_REQUESTED, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 10 } },
+	{ LLDP_SNMP_DOT3_POWER_ALLOCATED, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 2, 1, 11 } },
+	{ LLDP_SNMP_DOT3_AGG_STATUS, ASN_OCTET_STR, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 3, 1, 1 } },
+	{ LLDP_SNMP_DOT3_AGG_ID, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 3, 1, 2 } },
+	{ LLDP_SNMP_DOT3_MFS, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 4623, 1, 3, 4, 1, 1 } },
+#endif
+#ifdef ENABLE_LLDPMED
+	/* LLDP-MED local */
+	{ LLDP_SNMP_MED_CLASS, ASN_INTEGER, RONLY, agent_h_local_med, 6,
+	    { 1, 5, 4795, 1, 1, 1 } },
+	{ LLDP_SNMP_MED_POLICY_VID, ASN_INTEGER, RONLY, agent_h_local_med_policy, 8,
+	    { 1, 5, 4795, 1, 2, 1, 1, 2 } },
+	{ LLDP_SNMP_MED_POLICY_PRIO, ASN_INTEGER, RONLY, agent_h_local_med_policy, 8,
+	    { 1, 5, 4795, 1, 2, 1, 1, 3 } },
+	{ LLDP_SNMP_MED_POLICY_DSCP, ASN_INTEGER, RONLY, agent_h_local_med_policy, 8,
+	    { 1, 5, 4795, 1, 2, 1, 1, 4 } },
+	{ LLDP_SNMP_MED_POLICY_UNKNOWN, ASN_INTEGER, RONLY, agent_h_local_med_policy, 8,
+	    { 1, 5, 4795, 1, 2, 1, 1, 5 } },
+	{ LLDP_SNMP_MED_POLICY_TAGGED, ASN_INTEGER, RONLY, agent_h_local_med_policy, 8,
+	    { 1, 5, 4795, 1, 2, 1, 1, 6 } },
+	{ LLDP_SNMP_MED_HW, ASN_OCTET_STR, RONLY, agent_h_local_med, 6,
+	    { 1, 5, 4795, 1, 2, 2 } },
+	{ LLDP_SNMP_MED_FW, ASN_OCTET_STR, RONLY, agent_h_local_med, 6,
+	    { 1, 5, 4795, 1, 2, 3 } },
+	{ LLDP_SNMP_MED_SW, ASN_OCTET_STR, RONLY, agent_h_local_med, 6,
+	    { 1, 5, 4795, 1, 2, 4 } },
+	{ LLDP_SNMP_MED_SN, ASN_OCTET_STR, RONLY, agent_h_local_med, 6,
+	    { 1, 5, 4795, 1, 2, 5 } },
+	{ LLDP_SNMP_MED_MANUF, ASN_OCTET_STR, RONLY, agent_h_local_med, 6,
+	    { 1, 5, 4795, 1, 2, 6 } },
+	{ LLDP_SNMP_MED_MODEL, ASN_OCTET_STR, RONLY, agent_h_local_med, 6,
+	    { 1, 5, 4795, 1, 2, 7 } },
+	{ LLDP_SNMP_MED_ASSET, ASN_OCTET_STR, RONLY, agent_h_local_med, 6,
+	    { 1, 5, 4795, 1, 2, 8 } },
+	{ LLDP_SNMP_MED_LOCATION, ASN_OCTET_STR, RONLY, agent_h_local_med_location, 8,
+	    { 1, 5, 4795, 1, 2, 9, 1, 2 } },
+	{ LLDP_SNMP_MED_POE_DEVICETYPE, ASN_INTEGER, RONLY, agent_h_local_med_power, 6,
+	    { 1, 5, 4795, 1, 2, 10 } },
+	{ LLDP_SNMP_MED_POE_PSE_POWERVAL, ASN_GAUGE, RONLY, agent_h_local_med_power, 8,
+	    { 1, 5, 4795, 1, 2, 11, 1, 1 } },
+	{ LLDP_SNMP_MED_POE_PSE_POWERPRIORITY, ASN_INTEGER, RONLY,
+	    agent_h_local_med_power, 8, { 1, 5, 4795, 1, 2, 11, 1, 2 } },
+	{ LLDP_SNMP_MED_POE_PSE_POWERSOURCE, ASN_INTEGER, RONLY,
+	    agent_h_local_med_power, 6, { 1, 5, 4795, 1, 2, 12 } },
+	{ LLDP_SNMP_MED_POE_PD_POWERVAL, ASN_GAUGE, RONLY, agent_h_local_med_power, 6,
+	    { 1, 5, 4795, 1, 2, 13 } },
+	{ LLDP_SNMP_MED_POE_PD_POWERSOURCE, ASN_INTEGER, RONLY, agent_h_local_med_power,
+	    6, { 1, 5, 4795, 1, 2, 14 } },
+	{ LLDP_SNMP_MED_POE_PD_POWERPRIORITY, ASN_INTEGER, RONLY,
+	    agent_h_local_med_power, 6, { 1, 5, 4795, 1, 2, 15 } },
+	/* LLDP-MED remote */
+	{ LLDP_SNMP_MED_CAP_AVAILABLE, ASN_OCTET_STR, RONLY, agent_h_remote_med, 8,
+	    { 1, 5, 4795, 1, 3, 1, 1, 1 } },
+	{ LLDP_SNMP_MED_CAP_ENABLED, ASN_OCTET_STR, RONLY, agent_h_remote_med, 8,
+	    { 1, 5, 4795, 1, 3, 1, 1, 2 } },
+	{ LLDP_SNMP_MED_CLASS, ASN_INTEGER, RONLY, agent_h_remote_med, 8,
+	    { 1, 5, 4795, 1, 3, 1, 1, 3 } },
+	{ LLDP_SNMP_MED_POLICY_VID, ASN_INTEGER, RONLY, agent_h_remote_med_policy, 8,
+	    { 1, 5, 4795, 1, 3, 2, 1, 2 } },
+	{ LLDP_SNMP_MED_POLICY_PRIO, ASN_INTEGER, RONLY, agent_h_remote_med_policy, 8,
+	    { 1, 5, 4795, 1, 3, 2, 1, 3 } },
+	{ LLDP_SNMP_MED_POLICY_DSCP, ASN_INTEGER, RONLY, agent_h_remote_med_policy, 8,
+	    { 1, 5, 4795, 1, 3, 2, 1, 4 } },
+	{ LLDP_SNMP_MED_POLICY_UNKNOWN, ASN_INTEGER, RONLY, agent_h_remote_med_policy,
+	    8, { 1, 5, 4795, 1, 3, 2, 1, 5 } },
+	{ LLDP_SNMP_MED_POLICY_TAGGED, ASN_INTEGER, RONLY, agent_h_remote_med_policy, 8,
+	    { 1, 5, 4795, 1, 3, 2, 1, 6 } },
+	{ LLDP_SNMP_MED_HW, ASN_OCTET_STR, RONLY, agent_h_remote_med, 8,
+	    { 1, 5, 4795, 1, 3, 3, 1, 1 } },
+	{ LLDP_SNMP_MED_FW, ASN_OCTET_STR, RONLY, agent_h_remote_med, 8,
+	    { 1, 5, 4795, 1, 3, 3, 1, 2 } },
+	{ LLDP_SNMP_MED_SW, ASN_OCTET_STR, RONLY, agent_h_remote_med, 8,
+	    { 1, 5, 4795, 1, 3, 3, 1, 3 } },
+	{ LLDP_SNMP_MED_SN, ASN_OCTET_STR, RONLY, agent_h_remote_med, 8,
+	    { 1, 5, 4795, 1, 3, 3, 1, 4 } },
+	{ LLDP_SNMP_MED_MANUF, ASN_OCTET_STR, RONLY, agent_h_remote_med, 8,
+	    { 1, 5, 4795, 1, 3, 3, 1, 5 } },
+	{ LLDP_SNMP_MED_MODEL, ASN_OCTET_STR, RONLY, agent_h_remote_med, 8,
+	    { 1, 5, 4795, 1, 3, 3, 1, 6 } },
+	{ LLDP_SNMP_MED_ASSET, ASN_OCTET_STR, RONLY, agent_h_remote_med, 8,
+	    { 1, 5, 4795, 1, 3, 3, 1, 7 } },
+	{ LLDP_SNMP_MED_LOCATION, ASN_OCTET_STR, RONLY, agent_h_remote_med_location, 8,
+	    { 1, 5, 4795, 1, 3, 4, 1, 2 } },
+	{ LLDP_SNMP_MED_POE_DEVICETYPE, ASN_INTEGER, RONLY, agent_h_remote_med_power, 8,
+	    { 1, 5, 4795, 1, 3, 5, 1, 1 } },
+	{ LLDP_SNMP_MED_POE_PSE_POWERVAL, ASN_GAUGE, RONLY, agent_h_remote_med_power, 8,
+	    { 1, 5, 4795, 1, 3, 6, 1, 1 } },
+	{ LLDP_SNMP_MED_POE_PSE_POWERSOURCE, ASN_INTEGER, RONLY,
+	    agent_h_remote_med_power, 8, { 1, 5, 4795, 1, 3, 6, 1, 2 } },
+	{ LLDP_SNMP_MED_POE_PSE_POWERPRIORITY, ASN_INTEGER, RONLY,
+	    agent_h_remote_med_power, 8, { 1, 5, 4795, 1, 3, 6, 1, 3 } },
+	{ LLDP_SNMP_MED_POE_PD_POWERVAL, ASN_GAUGE, RONLY, agent_h_remote_med_power, 8,
+	    { 1, 5, 4795, 1, 3, 7, 1, 1 } },
+	{ LLDP_SNMP_MED_POE_PD_POWERSOURCE, ASN_INTEGER, RONLY,
+	    agent_h_remote_med_power, 8, { 1, 5, 4795, 1, 3, 7, 1, 2 } },
+	{ LLDP_SNMP_MED_POE_PD_POWERPRIORITY, ASN_INTEGER, RONLY,
+	    agent_h_remote_med_power, 8, { 1, 5, 4795, 1, 3, 7, 1, 3 } },
+#endif
+/* Dot1, local and remote ports */
+#ifdef ENABLE_DOT1
+	{ LLDP_SNMP_DOT1_PVID, ASN_INTEGER, RONLY, agent_h_local_port, 8,
+	    { 1, 5, 32962, 1, 2, 1, 1, 1 } },
+	{ LLDP_SNMP_DOT1_PPVLAN_SUPPORTED, ASN_INTEGER, RONLY, agent_h_local_ppvid, 8,
+	    { 1, 5, 32962, 1, 2, 2, 1, 2 } },
+	{ LLDP_SNMP_DOT1_PPVLAN_ENABLED, ASN_INTEGER, RONLY, agent_h_local_ppvid, 8,
+	    { 1, 5, 32962, 1, 2, 2, 1, 3 } },
+	{ LLDP_SNMP_DOT1_VLANNAME, ASN_OCTET_STR, RONLY, agent_h_local_vlan, 8,
+	    { 1, 5, 32962, 1, 2, 3, 1, 2 } },
+	{ LLDP_SNMP_DOT1_PI, ASN_OCTET_STR, RONLY, agent_h_local_pi, 8,
+	    { 1, 5, 32962, 1, 2, 4, 1, 2 } },
+#endif
+#ifdef ENABLE_DOT1
+	{ LLDP_SNMP_DOT1_PVID, ASN_INTEGER, RONLY, agent_h_remote_port, 8,
+	    { 1, 5, 32962, 1, 3, 1, 1, 1 } },
+	{ LLDP_SNMP_DOT1_PPVLAN_SUPPORTED, ASN_INTEGER, RONLY, agent_h_remote_ppvid, 8,
+	    { 1, 5, 32962, 1, 3, 2, 1, 2 } },
+	{ LLDP_SNMP_DOT1_PPVLAN_ENABLED, ASN_INTEGER, RONLY, agent_h_remote_ppvid, 8,
+	    { 1, 5, 32962, 1, 3, 2, 1, 3 } },
+	/* Remote vlans */
+	{ LLDP_SNMP_DOT1_VLANNAME, ASN_OCTET_STR, RONLY, agent_h_remote_vlan, 8,
+	    { 1, 5, 32962, 1, 3, 3, 1, 2 } },
+	/* Protocol identity */
+	{ LLDP_SNMP_DOT1_PI, ASN_OCTET_STR, RONLY, agent_h_remote_pi, 8,
+	    { 1, 5, 32962, 1, 3, 4, 1, 2 } },
+#endif
+};
+size_t
+agent_lldp_vars_size(void)
+{
+	return sizeof(agent_lldp_vars) / sizeof(struct variable8);
+}
+
+/**
+ * Send a notification about a change in one remote neighbor.
+ *
+ * @param hardware Interface on which the change has happened.
+ * @param type     Type of change (add, delete, update)
+ * @param rport    Changed remote port
+ */
+void
+agent_notify(struct lldpd_hardware *hardware, int type, struct lldpd_port *rport)
+{
+	struct lldpd_hardware *h;
+
+	/* OID of the notification */
+	oid notification_oid[] = { LLDP_OID, 0, 0, 1 };
+	size_t notification_oid_len = OID_LENGTH(notification_oid);
+	/* OID for snmpTrapOID.0 */
+	oid objid_snmptrap[] = { SNMPTRAP_OID };
+	size_t objid_snmptrap_len = OID_LENGTH(objid_snmptrap);
+
+	/* Other OID */
+	oid inserts_oid[] = { LLDP_OID, 1, 2, 2 };
+	size_t inserts_oid_len = OID_LENGTH(inserts_oid);
+	unsigned long inserts = 0;
+
+	oid deletes_oid[] = { LLDP_OID, 1, 2, 3 };
+	size_t deletes_oid_len = OID_LENGTH(deletes_oid);
+	unsigned long deletes = 0;
+
+	oid drops_oid[] = { LLDP_OID, 1, 2, 4 };
+	size_t drops_oid_len = OID_LENGTH(drops_oid);
+	unsigned long drops = 0;
+
+	oid ageouts_oid[] = { LLDP_OID, 1, 2, 5 };
+	size_t ageouts_oid_len = OID_LENGTH(ageouts_oid);
+	unsigned long ageouts = 0;
+
+	/* We also add some extra. Easy ones. */
+	oid locport_oid[] = { LLDP_OID, 1, 3, 7, 1, 4, hardware->h_ifindex };
+	size_t locport_oid_len = OID_LENGTH(locport_oid);
+	oid sysname_oid[] = { LLDP_OID, 1, 4, 1, 1, 9, lastchange(rport),
+		hardware->h_ifindex, rport->p_chassis->c_index };
+	size_t sysname_oid_len = OID_LENGTH(sysname_oid);
+	oid portdescr_oid[] = { LLDP_OID, 1, 4, 1, 1, 8, lastchange(rport),
+		hardware->h_ifindex, rport->p_chassis->c_index };
+	size_t portdescr_oid_len = OID_LENGTH(portdescr_oid);
+
+	netsnmp_variable_list *notification_vars = NULL;
+
+	if (!hardware->h_cfg->g_snmp) return;
+
+	switch (type) {
+	case NEIGHBOR_CHANGE_DELETED:
+		log_debug("snmp", "send notification for neighbor deleted on %s",
+		    hardware->h_ifname);
+		break;
+	case NEIGHBOR_CHANGE_UPDATED:
+		log_debug("snmp", "send notification for neighbor updated on %s",
+		    hardware->h_ifname);
+		break;
+	case NEIGHBOR_CHANGE_ADDED:
+		log_debug("snmp", "send notification for neighbor added on %s",
+		    hardware->h_ifname);
+		break;
+	}
+
+	TAILQ_FOREACH (h, &hardware->h_cfg->g_hardware, h_entries) {
+		inserts += h->h_insert_cnt;
+		deletes += h->h_delete_cnt;
+		ageouts += h->h_ageout_cnt;
+		drops += h->h_drop_cnt;
+	}
+
+	/* snmpTrapOID */
+	snmp_varlist_add_variable(&notification_vars, objid_snmptrap,
+	    objid_snmptrap_len, ASN_OBJECT_ID, (u_char *)notification_oid,
+	    notification_oid_len * sizeof(oid));
+
+	snmp_varlist_add_variable(&notification_vars, inserts_oid, inserts_oid_len,
+	    ASN_GAUGE, (u_char *)&inserts, sizeof(inserts));
+	snmp_varlist_add_variable(&notification_vars, deletes_oid, deletes_oid_len,
+	    ASN_GAUGE, (u_char *)&deletes, sizeof(inserts));
+	snmp_varlist_add_variable(&notification_vars, drops_oid, drops_oid_len,
+	    ASN_GAUGE, (u_char *)&drops, sizeof(drops));
+	snmp_varlist_add_variable(&notification_vars, ageouts_oid, ageouts_oid_len,
+	    ASN_GAUGE, (u_char *)&ageouts, sizeof(ageouts));
+
+	if (type != NEIGHBOR_CHANGE_DELETED) {
+		snmp_varlist_add_variable(&notification_vars, locport_oid,
+		    locport_oid_len, ASN_OCTET_STR, (u_char *)hardware->h_ifname,
+		    strnlen(hardware->h_ifname, IFNAMSIZ));
+		if (rport->p_chassis->c_name && *rport->p_chassis->c_name != '\0') {
+			snmp_varlist_add_variable(&notification_vars, sysname_oid,
+			    sysname_oid_len, ASN_OCTET_STR,
+			    (u_char *)rport->p_chassis->c_name,
+			    strlen(rport->p_chassis->c_name));
+		}
+		if (rport->p_descr) {
+			snmp_varlist_add_variable(&notification_vars, portdescr_oid,
+			    portdescr_oid_len, ASN_OCTET_STR, (u_char *)rport->p_descr,
+			    strlen(rport->p_descr));
+		}
+	}
+
+	log_debug("snmp", "sending SNMP trap (%ld, %ld, %ld)", inserts, deletes,
+	    ageouts);
+	send_v2trap(notification_vars);
+	snmp_free_varbind(notification_vars);
+}
+
+/* Logging NetSNMP messages */
+static int
+agent_log_callback(int major, int minor, void *serverarg, void *clientarg)
+{
+	struct snmp_log_message *slm = (struct snmp_log_message *)serverarg;
+	char *msg = strdup(slm->msg);
+	(void)major;
+	(void)minor;
+	(void)clientarg;
+
+	if (msg && msg[strlen(msg) - 1] == '\n') msg[strlen(msg) - 1] = '\0';
+	switch (slm->priority) {
+	case LOG_EMERG:
+		log_warnx("libsnmp", "%s", msg ? msg : slm->msg);
+		break;
+	case LOG_ALERT:
+		log_warnx("libsnmp", "%s", msg ? msg : slm->msg);
+		break;
+	case LOG_CRIT:
+		log_warnx("libsnmp", "%s", msg ? msg : slm->msg);
+		break;
+	case LOG_ERR:
+		log_warnx("libsnmp", "%s", msg ? msg : slm->msg);
+		break;
+	case LOG_WARNING:
+		log_warnx("libsnmp", "%s", msg ? msg : slm->msg);
+		break;
+	case LOG_NOTICE:
+		log_info("libsnmp", "%s", msg ? msg : slm->msg);
+		break;
+	case LOG_INFO:
+		log_info("libsnmp", "%s", msg ? msg : slm->msg);
+		break;
+	case LOG_DEBUG:
+		log_debug("libsnmp", "%s", msg ? msg : slm->msg);
+		break;
+	}
+	free(msg);
+	return SNMP_ERR_NOERROR;
+}
+
+void
+agent_init(struct lldpd *cfg, const char *agentx)
+{
+	int rc;
+
+	log_info("snmp", "enable SNMP subagent");
+	netsnmp_enable_subagent();
+
+	log_debug("snmp", "enable logging");
+	snmp_disable_log();
+	snmp_enable_calllog();
+	snmp_register_callback(SNMP_CALLBACK_LIBRARY, SNMP_CALLBACK_LOGGING,
+	    agent_log_callback, NULL);
+
+	scfg = cfg;
+
+	/* We are chrooted, we don't want to handle persistent states */
+	netsnmp_ds_set_boolean(NETSNMP_DS_LIBRARY_ID, NETSNMP_DS_LIB_DONT_PERSIST_STATE,
+	    TRUE);
+	/* Do not load any MIB */
+	setenv("MIBS", "", 1);
+	setenv("MIBDIRS", "/dev/null", 1);
+
+#ifdef ENABLE_PRIVSEP
+	/* We provide our UNIX domain transport */
+	log_debug("snmp", "register UNIX domain transport");
+	agent_priv_register_domain();
+#endif
+
+	if (agentx)
+		netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID,
+		    NETSNMP_DS_AGENT_X_SOCKET, agentx);
+	init_agent("lldpAgent");
+	REGISTER_MIB("lldp", agent_lldp_vars, variable8, lldp_oid);
+	init_snmp("lldpAgent");
+
+	log_debug("snmp", "register to sysORTable");
+	if ((rc = register_sysORTable(lldp_oid, OID_LENGTH(lldp_oid),
+		 "lldpMIB implementation by lldpd")) != 0)
+		log_warnx("snmp", "unable to register to sysORTable (%d)", rc);
+}
+
+void
+agent_shutdown()
+{
+	log_debug("snmp", "agent shutdown");
+	unregister_sysORTable(lldp_oid, OID_LENGTH(lldp_oid));
+	snmp_shutdown("lldpAgent");
+}
diff --git a/src/daemon/agent.h b/src/daemon/agent.h
new file mode 100644
index 0000000..b498aeb
--- /dev/null
+++ b/src/daemon/agent.h
@@ -0,0 +1,35 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _AGENT_H
+#define _AGENT_H
+
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/net-snmp-includes.h>
+#include <net-snmp/agent/net-snmp-agent-includes.h>
+#include <net-snmp/agent/snmp_vars.h>
+
+#ifndef RONLY
+#  define RONLY NETSNMP_OLDAPI_RONLY
+#endif
+
+#define LLDP_OID 1, 0, 8802, 1, 1, 2
+#define SNMPTRAP_OID 1, 3, 6, 1, 6, 3, 1, 1, 4, 1, 0
+static oid lldp_oid[] = { LLDP_OID };
+size_t agent_lldp_vars_size(void);
+
+#endif
diff --git a/src/daemon/agent_priv.c b/src/daemon/agent_priv.c
new file mode 100644
index 0000000..b5cf72a
--- /dev/null
+++ b/src/daemon/agent_priv.c
@@ -0,0 +1,243 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* Some of the code here (agent_priv_unix_*) has been adapted from code from
+ * Net-SNMP project (snmplib/snmpUnixDomain.c). Net-SNMP project is licensed
+ * using BSD and BSD-like licenses. I don't know the exact license of the file
+ * snmplib/snmpUnixDomain.c. */
+
+#include "lldpd.h"
+
+#include <unistd.h>
+#include <errno.h>
+#include <poll.h>
+
+#ifdef ENABLE_PRIVSEP
+#  include <net-snmp/net-snmp-config.h>
+#  include <net-snmp/net-snmp-includes.h>
+#  include <net-snmp/agent/net-snmp-agent-includes.h>
+#  include <net-snmp/agent/snmp_vars.h>
+#  include <net-snmp/library/snmpUnixDomain.h>
+
+#  ifdef ASN_PRIV_STOP
+/* NetSNMP 5.8+ */
+#    define F_SEND_SIGNATURE \
+      netsnmp_transport *t, const void *buf, int size, void **opaque, int *olength
+#    define F_FMTADDR_SIGNATURE netsnmp_transport *t, const void *data, int len
+#    define F_FROM_OSTRING_SIGNATURE const void *o, size_t o_len, int local
+#  else
+#    define F_SEND_SIGNATURE \
+      netsnmp_transport *t, void *buf, int size, void **opaque, int *olength
+#    define F_FMTADDR_SIGNATURE netsnmp_transport *t, void *data, int len
+#    define F_FROM_OSTRING_SIGNATURE const u_char *o, size_t o_len, int local
+#  endif
+
+static oid netsnmp_unix[] = { TRANSPORT_DOMAIN_LOCAL };
+static netsnmp_tdomain unixDomain;
+
+static char *
+agent_priv_unix_fmtaddr(F_FMTADDR_SIGNATURE)
+{
+	/* We don't bother to implement the full function */
+	return strdup("Local Unix socket with privilege separation: unknown");
+}
+
+static int
+agent_priv_unix_recv(netsnmp_transport *t, void *buf, int size, void **opaque,
+    int *olength)
+{
+	int rc = -1;
+	socklen_t tolen = sizeof(struct sockaddr_un);
+	struct sockaddr *to = NULL;
+
+	if (t == NULL || t->sock < 0) goto recv_error;
+	to = (struct sockaddr *)calloc(1, sizeof(struct sockaddr_un));
+	if (to == NULL) goto recv_error;
+	if (getsockname(t->sock, to, &tolen) != 0) goto recv_error;
+	while (rc < 0) {
+		rc = recv(t->sock, buf, size, 0);
+		/* TODO: handle the (unlikely) case where we get EAGAIN or EWOULDBLOCK
+		 */
+		if (rc < 0 && errno != EINTR) {
+			log_warn("snmp", "unable to receive from fd %d", t->sock);
+			goto recv_error;
+		}
+	}
+	*opaque = (void *)to;
+	*olength = sizeof(struct sockaddr_un);
+	return rc;
+
+recv_error:
+	free(to);
+	*opaque = NULL;
+	*olength = 0;
+	return -1;
+}
+
+#  define AGENT_WRITE_TIMEOUT 2000
+static int
+agent_priv_unix_send(F_SEND_SIGNATURE)
+{
+	int rc = -1;
+
+	if (t != NULL && t->sock >= 0) {
+		struct pollfd sagentx = { .fd = t->sock,
+			.events = POLLOUT | POLLERR | POLLHUP };
+		while (rc < 0) {
+			rc = poll(&sagentx, 1, AGENT_WRITE_TIMEOUT);
+			if (rc == 0) {
+				log_warnx("snmp",
+				    "timeout while communicating with the master agent");
+				rc = -1;
+				break;
+			}
+			if (rc > 0) {
+				/* We can either write or have an error somewhere */
+				rc = send(t->sock, buf, size, 0);
+				if (rc < 0) {
+					if (errno == EAGAIN || errno == EWOULDBLOCK ||
+					    errno == EINTR)
+						/* Let's retry */
+						continue;
+					log_warn("snmp",
+					    "error while sending to master agent");
+					break;
+				}
+			} else {
+				if (errno != EINTR) {
+					log_warn("snmp",
+					    "error while attempting to send to master agent");
+					break;
+				}
+				continue;
+			}
+		}
+	}
+	return rc;
+}
+
+static int
+agent_priv_unix_close(netsnmp_transport *t)
+{
+	int rc = 0;
+
+	if (t->sock >= 0) {
+		rc = close(t->sock);
+		t->sock = -1;
+		return rc;
+	}
+	return -1;
+}
+
+static int
+agent_priv_unix_accept(netsnmp_transport *t)
+{
+	log_warnx("snmp", "should not have been called");
+	return -1;
+}
+
+static netsnmp_transport *
+agent_priv_unix_transport(const char *string, int len, int local)
+{
+	struct sockaddr_un addr = { .sun_family = AF_UNIX };
+	netsnmp_transport *t = NULL;
+
+	if (local) {
+		log_warnx("snmp", "should not have been called for local transport");
+		return NULL;
+	}
+	if (!string) return NULL;
+	if (len >= sizeof(addr.sun_path) ||
+	    strlcpy(addr.sun_path, string, sizeof(addr.sun_path)) >=
+		sizeof(addr.sun_path)) {
+		log_warnx("snmp", "path too long for Unix domain transport");
+		return NULL;
+	}
+
+	if ((t = (netsnmp_transport *)calloc(1, sizeof(netsnmp_transport))) == NULL)
+		return NULL;
+
+	t->domain = netsnmp_unix;
+	t->domain_length = sizeof(netsnmp_unix) / sizeof(netsnmp_unix[0]);
+
+	if ((t->sock = priv_snmp_socket(&addr)) < 0) {
+		netsnmp_transport_free(t);
+		return NULL;
+	}
+
+	t->flags = NETSNMP_TRANSPORT_FLAG_STREAM;
+
+	if ((t->remote = (u_char *)calloc(1, strlen(addr.sun_path) + 1)) == NULL) {
+		agent_priv_unix_close(t);
+		netsnmp_transport_free(t);
+		return NULL;
+	}
+	memcpy(t->remote, addr.sun_path, strlen(addr.sun_path));
+	t->remote_length = strlen(addr.sun_path);
+
+	t->msgMaxSize = 0x7fffffff;
+	t->f_recv = agent_priv_unix_recv;
+	t->f_send = agent_priv_unix_send;
+	t->f_close = agent_priv_unix_close;
+	t->f_accept = agent_priv_unix_accept;
+	t->f_fmtaddr = agent_priv_unix_fmtaddr;
+
+	return t;
+}
+
+#  if HAVE_NETSNMP_TDOMAIN_F_CREATE_FROM_TSTRING_NEW
+static netsnmp_transport *
+agent_priv_unix_create_tstring_new(const char *string, int local,
+    const char *default_target)
+{
+	if ((!string || *string == '\0') && default_target && *default_target != '\0') {
+		string = default_target;
+	}
+	if (!string) return NULL;
+	return agent_priv_unix_transport(string, strlen(string), local);
+}
+#  else
+static netsnmp_transport *
+agent_priv_unix_create_tstring(const char *string, int local)
+{
+	if (!string) return NULL;
+	return agent_priv_unix_transport(string, strlen(string), local);
+}
+#  endif
+
+static netsnmp_transport *
+agent_priv_unix_create_ostring(F_FROM_OSTRING_SIGNATURE)
+{
+	return agent_priv_unix_transport((char *)o, o_len, local);
+}
+
+void
+agent_priv_register_domain()
+{
+	unixDomain.name = netsnmp_unix;
+	unixDomain.name_length = sizeof(netsnmp_unix) / sizeof(oid);
+	unixDomain.prefix = (const char **)calloc(2, sizeof(char *));
+	unixDomain.prefix[0] = "unix";
+#  if HAVE_NETSNMP_TDOMAIN_F_CREATE_FROM_TSTRING_NEW
+	unixDomain.f_create_from_tstring_new = agent_priv_unix_create_tstring_new;
+#  else
+	unixDomain.f_create_from_tstring = agent_priv_unix_create_tstring;
+#  endif
+	unixDomain.f_create_from_ostring = agent_priv_unix_create_ostring;
+	netsnmp_tdomain_register(&unixDomain);
+}
+#endif
diff --git a/src/daemon/bitmap.c b/src/daemon/bitmap.c
new file mode 100644
index 0000000..c7a6330
--- /dev/null
+++ b/src/daemon/bitmap.c
@@ -0,0 +1,63 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2020 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* Helpers around bitmaps */
+
+#include "lldpd.h"
+
+/*
+ * Set vlan id in the bitmap
+ */
+void
+bitmap_set(uint32_t *bmap, uint16_t vlan_id)
+{
+	if (vlan_id < MAX_VLAN) bmap[vlan_id / 32] |= (((uint32_t)1) << (vlan_id % 32));
+}
+
+/*
+ * Checks if the bitmap is empty
+ */
+int
+bitmap_isempty(uint32_t *bmap)
+{
+	int i;
+
+	for (i = 0; i < VLAN_BITMAP_LEN; i++) {
+		if (bmap[i] != 0) return 0;
+	}
+
+	return 1;
+}
+
+/*
+ * Calculate the number of bits set in the bitmap to get total
+ * number of VLANs
+ */
+unsigned int
+bitmap_numbits(uint32_t *bmap)
+{
+	unsigned int num = 0;
+
+	for (int i = 0; (i < VLAN_BITMAP_LEN); i++) {
+		uint32_t v = bmap[i];
+		v = v - ((v >> 1) & 0x55555555);
+		v = (v & 0x33333333) + ((v >> 2) & 0x33333333);
+		num += (((v + (v >> 4)) & 0x0F0F0F0F) * 0x01010101) >> 24;
+	}
+
+	return num;
+}
diff --git a/src/daemon/client.c b/src/daemon/client.c
new file mode 100644
index 0000000..d9d907f
--- /dev/null
+++ b/src/daemon/client.c
@@ -0,0 +1,700 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+#include "trace.h"
+
+#include <sys/utsname.h>
+
+static ssize_t
+client_handle_none(struct lldpd *cfg, enum hmsg_type *type, void *input, int input_len,
+    void **output, int *subscribed)
+{
+	log_info("rpc", "received noop request from client");
+	*type = NONE;
+	return 0;
+}
+
+/* Return the global configuration */
+static ssize_t
+client_handle_get_configuration(struct lldpd *cfg, enum hmsg_type *type, void *input,
+    int input_len, void **output, int *subscribed)
+{
+	ssize_t output_len;
+	log_debug("rpc", "client requested configuration");
+	output_len = lldpd_config_serialize(&cfg->g_config, output);
+	if (output_len <= 0) {
+		output_len = 0;
+		*type = NONE;
+	}
+	return output_len;
+}
+
+static char *
+xstrdup(const char *str)
+{
+	if (!str) return NULL;
+	return strdup(str);
+}
+
+/* Change the global configuration */
+static ssize_t
+client_handle_set_configuration(struct lldpd *cfg, enum hmsg_type *type, void *input,
+    int input_len, void **output, int *subscribed)
+{
+	struct lldpd_config *config;
+
+	log_debug("rpc", "client request a change in configuration");
+	/* Get the proposed configuration. */
+	if (lldpd_config_unserialize(input, input_len, &config) <= 0) {
+		*type = NONE;
+		return 0;
+	}
+
+#define CHANGED(w) (config->w != cfg->g_config.w)
+#define CHANGED_STR(w)               \
+  (!(config->w == cfg->g_config.w || \
+      (config->w && cfg->g_config.w && !strcmp(config->w, cfg->g_config.w))))
+
+	/* What needs to be done? Transmit delay? */
+	if (CHANGED(c_tx_interval) && config->c_tx_interval != 0) {
+		if (config->c_tx_interval < 0) {
+			log_debug("rpc", "client asked for immediate retransmission");
+		} else {
+			log_debug("rpc", "client change transmit interval to %d ms",
+			    config->c_tx_interval);
+			cfg->g_config.c_tx_interval = config->c_tx_interval;
+			cfg->g_config.c_ttl =
+			    cfg->g_config.c_tx_interval * cfg->g_config.c_tx_hold;
+			cfg->g_config.c_ttl = (cfg->g_config.c_ttl + 999) / 1000;
+		}
+		levent_send_now(cfg);
+	}
+	if (CHANGED(c_tx_hold) && config->c_tx_hold > 0) {
+		log_debug("rpc", "client change transmit hold to %d",
+		    config->c_tx_hold);
+		cfg->g_config.c_tx_hold = config->c_tx_hold;
+		cfg->g_config.c_ttl =
+		    cfg->g_config.c_tx_interval * cfg->g_config.c_tx_hold;
+		cfg->g_config.c_ttl = (cfg->g_config.c_ttl + 999) / 1000;
+	}
+	if (CHANGED(c_max_neighbors) && config->c_max_neighbors > 0) {
+		log_debug("rpc", "client change maximum neighbors to %d",
+		    config->c_max_neighbors);
+		cfg->g_config.c_max_neighbors = config->c_max_neighbors;
+	}
+	if (CHANGED(c_lldp_portid_type) &&
+	    config->c_lldp_portid_type > LLDP_PORTID_SUBTYPE_UNKNOWN &&
+	    config->c_lldp_portid_type <= LLDP_PORTID_SUBTYPE_MAX) {
+		log_debug("rpc", "change lldp portid tlv subtype to %d",
+		    config->c_lldp_portid_type);
+		cfg->g_config.c_lldp_portid_type = config->c_lldp_portid_type;
+		levent_update_now(cfg);
+	}
+	if (CHANGED(c_lldp_agent_type) &&
+	    config->c_lldp_agent_type > LLDP_AGENT_TYPE_UNKNOWN &&
+	    config->c_lldp_agent_type <= LLDP_AGENT_TYPE_MAX) {
+		log_debug("rpc", "change lldp agent type to %d",
+		    config->c_lldp_agent_type);
+		cfg->g_config.c_lldp_agent_type = config->c_lldp_agent_type;
+		levent_update_now(cfg);
+	}
+	/* Pause/resume */
+	if (CHANGED(c_paused)) {
+		log_debug("rpc", "client asked to %s lldpd",
+		    config->c_paused ? "pause" : "resume");
+		cfg->g_config.c_paused = config->c_paused;
+		levent_send_now(cfg);
+	}
+
+#ifdef ENABLE_LLDPMED
+	if (CHANGED(c_enable_fast_start)) {
+		cfg->g_config.c_enable_fast_start = config->c_enable_fast_start;
+		log_debug("rpc", "client asked to %s fast start",
+		    cfg->g_config.c_enable_fast_start ? "enable" : "disable");
+	}
+	if (CHANGED(c_tx_fast_interval) && config->c_tx_fast_interval > 0) {
+		log_debug("rpc", "change fast interval to %d",
+		    config->c_tx_fast_interval);
+		cfg->g_config.c_tx_fast_interval = config->c_tx_fast_interval;
+	}
+#endif
+	if (CHANGED_STR(c_iface_pattern)) {
+		log_debug("rpc", "change interface pattern to %s",
+		    config->c_iface_pattern ? config->c_iface_pattern : "(NULL)");
+		free(cfg->g_config.c_iface_pattern);
+		cfg->g_config.c_iface_pattern = xstrdup(config->c_iface_pattern);
+		levent_update_now(cfg);
+	}
+	if (CHANGED_STR(c_perm_ifaces)) {
+		log_debug("rpc", "change permanent interface pattern to %s",
+		    config->c_perm_ifaces ? config->c_perm_ifaces : "(NULL)");
+		free(cfg->g_config.c_perm_ifaces);
+		cfg->g_config.c_perm_ifaces = xstrdup(config->c_perm_ifaces);
+		levent_update_now(cfg);
+	}
+	if (CHANGED_STR(c_mgmt_pattern)) {
+		log_debug("rpc", "change management pattern to %s",
+		    config->c_mgmt_pattern ? config->c_mgmt_pattern : "(NULL)");
+		free(cfg->g_config.c_mgmt_pattern);
+		cfg->g_config.c_mgmt_pattern = xstrdup(config->c_mgmt_pattern);
+		levent_update_now(cfg);
+	}
+	if (CHANGED_STR(c_cid_string)) {
+		log_debug("rpc", "change chassis ID string to %s",
+		    config->c_cid_string ? config->c_cid_string : "(NULL)");
+		free(cfg->g_config.c_cid_string);
+		cfg->g_config.c_cid_string = xstrdup(config->c_cid_string);
+		free(LOCAL_CHASSIS(cfg)->c_id);
+		LOCAL_CHASSIS(cfg)->c_id = NULL;
+		lldpd_update_localchassis(cfg);
+		levent_update_now(cfg);
+	}
+	if (CHANGED_STR(c_description)) {
+		log_debug("rpc", "change chassis description to %s",
+		    config->c_description ? config->c_description : "(NULL)");
+		free(cfg->g_config.c_description);
+		cfg->g_config.c_description = xstrdup(config->c_description);
+		lldpd_update_localchassis(cfg);
+		levent_update_now(cfg);
+	}
+	if (CHANGED_STR(c_platform)) {
+		log_debug("rpc", "change platform description to %s",
+		    config->c_platform ? config->c_platform : "(NULL)");
+		free(cfg->g_config.c_platform);
+		cfg->g_config.c_platform = xstrdup(config->c_platform);
+		lldpd_update_localchassis(cfg);
+		levent_update_now(cfg);
+	}
+	if (CHANGED_STR(c_hostname)) {
+		log_debug("rpc", "change system name to %s",
+		    config->c_hostname ? config->c_hostname : "(NULL)");
+		free(cfg->g_config.c_hostname);
+		cfg->g_config.c_hostname = xstrdup(config->c_hostname);
+		lldpd_update_localchassis(cfg);
+		levent_update_now(cfg);
+	}
+	if (CHANGED(c_set_ifdescr)) {
+		log_debug("rpc",
+		    "%s setting of interface description based on discovered neighbors",
+		    config->c_set_ifdescr ? "enable" : "disable");
+		cfg->g_config.c_set_ifdescr = config->c_set_ifdescr;
+		levent_update_now(cfg);
+	}
+	if (CHANGED(c_promisc)) {
+		log_debug("rpc", "%s promiscuous mode on managed interfaces",
+		    config->c_promisc ? "enable" : "disable");
+		cfg->g_config.c_promisc = config->c_promisc;
+		levent_update_now(cfg);
+	}
+	if (CHANGED(c_cap_advertise)) {
+		log_debug("rpc", "%s chassis capabilities advertisement",
+		    config->c_cap_advertise ? "enable" : "disable");
+		cfg->g_config.c_cap_advertise = config->c_cap_advertise;
+		levent_update_now(cfg);
+	}
+	if (CHANGED(c_cap_override)) {
+		log_debug("rpc", "%s chassis capabilities override",
+		    config->c_cap_override ? "enable" : "disable");
+		cfg->g_config.c_cap_override = config->c_cap_override;
+		levent_update_now(cfg);
+	}
+	if (CHANGED(c_mgmt_advertise)) {
+		log_debug("rpc", "%s management addresses advertisement",
+		    config->c_mgmt_advertise ? "enable" : "disable");
+		cfg->g_config.c_mgmt_advertise = config->c_mgmt_advertise;
+		levent_update_now(cfg);
+	}
+	if (CHANGED(c_bond_slave_src_mac_type)) {
+		if (config->c_bond_slave_src_mac_type >
+			LLDP_BOND_SLAVE_SRC_MAC_TYPE_UNKNOWN &&
+		    config->c_bond_slave_src_mac_type <=
+			LLDP_BOND_SLAVE_SRC_MAC_TYPE_MAX) {
+			log_debug("rpc", "change bond src mac type to %d",
+			    config->c_bond_slave_src_mac_type);
+			cfg->g_config.c_bond_slave_src_mac_type =
+			    config->c_bond_slave_src_mac_type;
+		} else {
+			log_info("rpc", "Invalid bond slave src mac type: %d\n",
+			    config->c_bond_slave_src_mac_type);
+		}
+	}
+
+	lldpd_config_cleanup(config);
+	free(config);
+
+	return 0;
+}
+
+/* Return the list of interfaces.
+   Input:  nothing.
+   Output: list of interface names (lldpd_interface_list)
+*/
+static ssize_t
+client_handle_get_interfaces(struct lldpd *cfg, enum hmsg_type *type, void *input,
+    int input_len, void **output, int *subscribed)
+{
+	struct lldpd_interface *iff, *iff_next;
+	struct lldpd_hardware *hardware;
+	ssize_t output_len;
+
+	/* Build the list of interfaces */
+	struct lldpd_interface_list ifs;
+
+	log_debug("rpc", "client request the list of interfaces");
+	TAILQ_INIT(&ifs);
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+		if ((iff = (struct lldpd_interface *)malloc(
+			 sizeof(struct lldpd_interface))) == NULL)
+			fatal("rpc", NULL);
+		iff->name = hardware->h_ifname;
+		TAILQ_INSERT_TAIL(&ifs, iff, next);
+	}
+
+	output_len = lldpd_interface_list_serialize(&ifs, output);
+	if (output_len <= 0) {
+		output_len = 0;
+		*type = NONE;
+	}
+
+	/* Free the temporary list */
+	for (iff = TAILQ_FIRST(&ifs); iff != NULL; iff = iff_next) {
+		iff_next = TAILQ_NEXT(iff, next);
+		TAILQ_REMOVE(&ifs, iff, next);
+		free(iff);
+	}
+
+	return output_len;
+}
+
+/**
+ * Set local chassis info
+ * Input: chassis object
+ * Output: updated chassis object
+ */
+static ssize_t
+client_handle_set_local_chassis(struct lldpd *cfg, enum hmsg_type *type, void *input,
+    int input_len, void **output, int *subscribed)
+{
+	struct lldpd_chassis *chassis = NULL;
+	struct lldpd_chassis *local_chassis = NULL;
+#ifdef ENABLE_LLDPMED
+	struct utsname un;
+#endif
+
+	log_debug("rpc", "client request a change in chassis configuration");
+	if (lldpd_chassis_unserialize(input, input_len, &chassis) <= 0) {
+		*type = NONE;
+		return 0;
+	}
+
+	local_chassis = LOCAL_CHASSIS(cfg);
+
+#ifdef ENABLE_LLDPMED
+	free(local_chassis->c_med_hw);
+	local_chassis->c_med_hw =
+	    (!chassis->c_med_hw) ? dmi_hw() : strdup(chassis->c_med_hw);
+
+	// Follows lldpd.c - only set sw if advertising is enabled
+	if (cfg->g_config.c_advertise_version) {
+		free(local_chassis->c_med_sw);
+
+		if (!chassis->c_med_sw) {
+			if (uname(&un) < 0) {
+				log_warn("rpc",
+				    "Could not get default uname. Will continue anyway.");
+				local_chassis->c_med_sw = NULL;
+			} else {
+				local_chassis->c_med_sw = strdup(un.release);
+			}
+		} else {
+			local_chassis->c_med_sw = strdup(chassis->c_med_sw);
+		}
+	}
+
+	free(local_chassis->c_med_fw);
+	local_chassis->c_med_fw =
+	    (!chassis->c_med_fw) ? dmi_fw() : strdup(chassis->c_med_fw);
+
+	free(local_chassis->c_med_sn);
+	local_chassis->c_med_sn =
+	    (!chassis->c_med_sn) ? dmi_sn() : strdup(chassis->c_med_sn);
+
+	free(local_chassis->c_med_manuf);
+	local_chassis->c_med_manuf =
+	    (!chassis->c_med_manuf) ? dmi_manuf() : strdup(chassis->c_med_manuf);
+
+	free(local_chassis->c_med_model);
+	local_chassis->c_med_model =
+	    (!chassis->c_med_model) ? dmi_model() : strdup(chassis->c_med_model);
+
+	free(local_chassis->c_med_asset);
+	local_chassis->c_med_asset =
+	    (!chassis->c_med_asset) ? dmi_asset() : strdup(chassis->c_med_asset);
+#endif
+
+	if (chassis->c_cap_enabled != local_chassis->c_cap_enabled) {
+		local_chassis->c_cap_enabled = chassis->c_cap_enabled;
+		log_debug("rpc", "change capabilities enabled to: %d",
+		    local_chassis->c_cap_enabled);
+	}
+
+#ifdef ENABLE_LLDPMED
+	log_debug("rpc", "change hardware-revision to: %s", local_chassis->c_med_hw);
+	log_debug("rpc", "change software-revision to: %s", local_chassis->c_med_sw);
+	log_debug("rpc", "change firmware-revision to: %s", local_chassis->c_med_fw);
+	log_debug("rpc", "change serial-number to: %s", local_chassis->c_med_sn);
+	log_debug("rpc", "change manufacturer to: %s", local_chassis->c_med_manuf);
+	log_debug("rpc", "change model to: %s", local_chassis->c_med_model);
+	log_debug("rpc", "change asset to: %s", local_chassis->c_med_asset);
+#endif
+
+	lldpd_chassis_cleanup(chassis, 1);
+
+	ssize_t output_len = lldpd_chassis_serialize(local_chassis, output);
+	if (output_len <= 0) {
+		*type = NONE;
+		return 0;
+	}
+
+	return output_len;
+}
+
+/* Return the local chassis.
+   Input:  nothing.
+   Output: local chassis (lldpd_chassis)
+*/
+static ssize_t
+client_handle_get_local_chassis(struct lldpd *cfg, enum hmsg_type *type, void *input,
+    int input_len, void **output, int *subscribed)
+{
+	struct lldpd_chassis *chassis = LOCAL_CHASSIS(cfg);
+	ssize_t output_len;
+
+	log_debug("rpc", "client request the local chassis");
+	output_len = lldpd_chassis_serialize(chassis, output);
+	if (output_len <= 0) {
+		output_len = 0;
+		*type = NONE;
+	}
+
+	return output_len;
+}
+
+/* Return all available information related to an interface
+   Input:  name of the interface (serialized)
+   Output: Information about the interface (lldpd_hardware)
+*/
+static ssize_t
+client_handle_get_interface(struct lldpd *cfg, enum hmsg_type *type, void *input,
+    int input_len, void **output, int *subscribed)
+{
+	char *name;
+	struct lldpd_hardware *hardware;
+	void *p;
+
+	/* Get name of the interface */
+	if (marshal_unserialize(string, input, input_len, &p) <= 0) {
+		*type = NONE;
+		return 0;
+	}
+	name = p;
+
+	/* Search appropriate hardware */
+	log_debug("rpc", "client request interface %s", name);
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries)
+		if (!strcmp(hardware->h_ifname, name)) {
+			ssize_t output_len = lldpd_hardware_serialize(hardware, output);
+			free(name);
+			if (output_len <= 0) {
+				*type = NONE;
+				return 0;
+			}
+			return output_len;
+		}
+
+	log_warnx("rpc", "no interface %s found", name);
+	free(name);
+	*type = NONE;
+	return 0;
+}
+
+/* Return all available information related to an interface
+   Input:  name of the interface (serialized)
+   Output: Information about the interface (lldpd_hardware)
+*/
+static ssize_t
+client_handle_get_default_port(struct lldpd *cfg, enum hmsg_type *type, void *input,
+    int input_len, void **output, int *subscribed)
+{
+	log_debug("rpc", "client request the default local port");
+	ssize_t output_len = lldpd_port_serialize(cfg->g_default_local_port, output);
+	if (output_len <= 0) {
+		*type = NONE;
+		return 0;
+	}
+	return output_len;
+}
+
+static int
+_client_handle_set_port(struct lldpd *cfg, struct lldpd_port *port,
+    struct lldpd_port_set *set)
+{
+#ifdef ENABLE_LLDPMED
+	struct lldpd_med_loc *loc = NULL;
+#endif
+	if (set->local_id) {
+		log_debug("rpc", "requested change to Port ID");
+		free(port->p_id);
+		port->p_id = strdup(set->local_id);
+		port->p_id_len = strlen(set->local_id);
+		port->p_id_subtype = LLDP_PORTID_SUBTYPE_LOCAL;
+		port->p_descr_force = 0;
+	}
+	if (set->local_descr) {
+		log_debug("rpc", "requested change to Port Description");
+		free(port->p_descr);
+		port->p_descr = strdup(set->local_descr);
+		port->p_descr_force = 1;
+	}
+	switch (set->rxtx) {
+	case LLDPD_RXTX_TXONLY:
+		log_debug("rpc", "requested TX only mode");
+		port->p_disable_rx = 1;
+		port->p_disable_tx = 0;
+		break;
+	case LLDPD_RXTX_RXONLY:
+		log_debug("rpc", "requested RX only mode");
+		port->p_disable_rx = 0;
+		port->p_disable_tx = 1;
+		break;
+	case LLDPD_RXTX_BOTH:
+		log_debug("rpc", "requested RX/TX mode");
+		port->p_disable_rx = port->p_disable_tx = 0;
+		break;
+	case LLDPD_RXTX_DISABLED:
+		log_debug("rpc", "requested disabled mode");
+		port->p_disable_rx = port->p_disable_tx = 1;
+		break;
+	}
+	if (set->vlan_tx_enabled > -1) {
+		port->p_vlan_tx_enabled = set->vlan_tx_enabled;
+		port->p_vlan_tx_tag = set->vlan_tx_tag;
+	}
+#ifdef ENABLE_LLDPMED
+	if (set->med_policy && set->med_policy->type > 0) {
+		log_debug("rpc", "requested change to MED policy");
+		if (set->med_policy->type > LLDP_MED_APPTYPE_LAST) {
+			log_warnx("rpc", "invalid policy provided: %d",
+			    set->med_policy->type);
+			return -1;
+		}
+		memcpy(&port->p_med_policy[set->med_policy->type - 1], set->med_policy,
+		    sizeof(struct lldpd_med_policy));
+		port->p_med_cap_enabled |= LLDP_MED_CAP_POLICY;
+	}
+	if (set->med_location && set->med_location->format > 0) {
+		char *newdata = NULL;
+		log_debug("rpc", "requested change to MED location");
+		if (set->med_location->format > LLDP_MED_LOCFORMAT_LAST) {
+			log_warnx("rpc", "invalid location format provided: %d",
+			    set->med_location->format);
+			return -1;
+		}
+		loc = &port->p_med_location[set->med_location->format - 1];
+		free(loc->data);
+		memcpy(loc, set->med_location, sizeof(struct lldpd_med_loc));
+		if (!loc->data || !(newdata = malloc(loc->data_len))) loc->data_len = 0;
+		if (newdata) memcpy(newdata, loc->data, loc->data_len);
+		loc->data = newdata;
+		port->p_med_cap_enabled |= LLDP_MED_CAP_LOCATION;
+	}
+	if (set->med_power) {
+		log_debug("rpc", "requested change to MED power");
+		memcpy(&port->p_med_power, set->med_power,
+		    sizeof(struct lldpd_med_power));
+		switch (set->med_power->devicetype) {
+		case LLDP_MED_POW_TYPE_PD:
+			port->p_med_cap_enabled |= LLDP_MED_CAP_MDI_PD;
+			port->p_med_cap_enabled &= ~LLDP_MED_CAP_MDI_PSE;
+			break;
+		case LLDP_MED_POW_TYPE_PSE:
+			port->p_med_cap_enabled |= LLDP_MED_CAP_MDI_PSE;
+			port->p_med_cap_enabled &= ~LLDP_MED_CAP_MDI_PD;
+			break;
+		}
+	}
+#endif
+#ifdef ENABLE_DOT3
+	if (set->dot3_power) {
+		log_debug("rpc", "requested change to Dot3 power");
+		memcpy(&port->p_power, set->dot3_power,
+		    sizeof(struct lldpd_dot3_power));
+	}
+#endif
+#ifdef ENABLE_CUSTOM
+	if (set->custom_list_clear) {
+		log_debug("rpc", "requested custom TLVs clear");
+		lldpd_custom_list_cleanup(port);
+	} else {
+		if (set->custom) {
+			log_info("rpc",
+			    "custom TLV op %s oui %02x:%02x:%02x subtype %x",
+			    (set->custom_tlv_op == CUSTOM_TLV_REMOVE)  ? "remove" :
+				(set->custom_tlv_op == CUSTOM_TLV_ADD) ? "add" :
+									 "replace",
+			    set->custom->oui[0], set->custom->oui[1],
+			    set->custom->oui[2], set->custom->subtype);
+			switch (set->custom_tlv_op) {
+			case CUSTOM_TLV_REMOVE:
+				lldpd_custom_tlv_cleanup(port, set->custom);
+				break;
+			case CUSTOM_TLV_ADD:
+				lldpd_custom_tlv_add(port, set->custom);
+				break;
+			case CUSTOM_TLV_REPLACE:
+			default:
+				lldpd_custom_tlv_cleanup(port, set->custom);
+				lldpd_custom_tlv_add(port, set->custom);
+				break;
+			}
+		}
+	}
+#endif
+	return 0;
+}
+
+/* Set some port related settings (policy, location, power)
+   Input: name of the interface, policy/location/power setting to be modified
+   Output: nothing
+*/
+static ssize_t
+client_handle_set_port(struct lldpd *cfg, enum hmsg_type *type, void *input,
+    int input_len, void **output, int *subscribed)
+{
+	int ret = 0;
+	struct lldpd_port_set *set = NULL;
+	struct lldpd_hardware *hardware = NULL;
+
+	if (lldpd_port_set_unserialize(input, input_len, &set) <= 0) {
+		*type = NONE;
+		return 0;
+	}
+	if (!set->ifname) {
+		log_warnx("rpc", "no interface provided");
+		goto set_port_finished;
+	}
+
+	/* Search the appropriate hardware */
+	if (strlen(set->ifname) == 0) {
+		log_debug("rpc", "client request change to default port");
+		if (_client_handle_set_port(cfg, cfg->g_default_local_port, set) == -1)
+			goto set_port_finished;
+		ret = 1;
+	} else {
+		log_debug("rpc", "client request change to port %s", set->ifname);
+		TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+			if (!strcmp(hardware->h_ifname, set->ifname)) {
+				struct lldpd_port *port = &hardware->h_lport;
+				if (_client_handle_set_port(cfg, port, set) == -1)
+					goto set_port_finished;
+				ret = 1;
+				break;
+			}
+		}
+	}
+
+	if (ret == 0)
+		log_warn("rpc", "no interface %s found", set->ifname);
+	else
+		levent_update_now(cfg);
+
+set_port_finished:
+	if (!ret) *type = NONE;
+	free(set->ifname);
+	free(set->local_id);
+	free(set->local_descr);
+#ifdef ENABLE_LLDPMED
+	free(set->med_policy);
+	if (set->med_location) free(set->med_location->data);
+	free(set->med_location);
+	free(set->med_power);
+#endif
+#ifdef ENABLE_DOT3
+	free(set->dot3_power);
+#endif
+#ifdef ENABLE_CUSTOM
+	if (set->custom) {
+		free(set->custom->oui_info);
+		free(set->custom);
+	}
+#endif
+	free(set);
+	return 0;
+}
+
+/* Register subscribtion to neighbor changes */
+static ssize_t
+client_handle_subscribe(struct lldpd *cfg, enum hmsg_type *type, void *input,
+    int input_len, void **output, int *subscribed)
+{
+	log_debug("rpc", "client subscribe to changes");
+	*subscribed = 1;
+	return 0;
+}
+
+struct client_handle {
+	enum hmsg_type type;
+	const char *name;
+	ssize_t (
+	    *handle)(struct lldpd *, enum hmsg_type *, void *, int, void **, int *);
+};
+
+static struct client_handle client_handles[] = { { NONE, "None", client_handle_none },
+	{ GET_CONFIG, "Get configuration", client_handle_get_configuration },
+	{ SET_CONFIG, "Set configuration", client_handle_set_configuration },
+	{ GET_INTERFACES, "Get interfaces", client_handle_get_interfaces },
+	{ GET_INTERFACE, "Get interface", client_handle_get_interface },
+	{ GET_DEFAULT_PORT, "Get default port", client_handle_get_default_port },
+	{ SET_CHASSIS, "Set local chassis", client_handle_set_local_chassis },
+	{ GET_CHASSIS, "Get local chassis", client_handle_get_local_chassis },
+	{ SET_PORT, "Set port", client_handle_set_port },
+	{ SUBSCRIBE, "Subscribe", client_handle_subscribe }, { 0, NULL } };
+
+int
+client_handle_client(struct lldpd *cfg, ssize_t (*send)(void *, int, void *, size_t),
+    void *out, enum hmsg_type type, void *buffer, size_t n, int *subscribed)
+{
+	struct client_handle *ch;
+	void *answer;
+	ssize_t len, sent;
+
+	log_debug("rpc", "handle client request");
+	for (ch = client_handles; ch->handle != NULL; ch++) {
+		if (ch->type == type) {
+			TRACE(LLDPD_CLIENT_REQUEST(ch->name));
+			answer = NULL;
+			len = ch->handle(cfg, &type, buffer, n, &answer, subscribed);
+			sent = send(out, type, answer, len);
+			free(answer);
+			return sent;
+		}
+	}
+
+	log_warnx("rpc", "unknown message request (%d) received", type);
+	return -1;
+}
diff --git a/src/daemon/dmi-dummy.c b/src/daemon/dmi-dummy.c
new file mode 100644
index 0000000..2954d50
--- /dev/null
+++ b/src/daemon/dmi-dummy.c
@@ -0,0 +1,57 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#ifdef ENABLE_LLDPMED
+
+char *
+dmi_hw()
+{
+	return NULL;
+}
+
+char *
+dmi_fw()
+{
+	return NULL;
+}
+
+char *
+dmi_sn()
+{
+	return NULL;
+}
+
+char *
+dmi_manuf()
+{
+	return NULL;
+}
+
+char *
+dmi_model()
+{
+	return NULL;
+}
+
+char *
+dmi_asset()
+{
+	return NULL;
+}
+#endif
diff --git a/src/daemon/dmi-freebsd.c b/src/daemon/dmi-freebsd.c
new file mode 100644
index 0000000..f20b71b
--- /dev/null
+++ b/src/daemon/dmi-freebsd.c
@@ -0,0 +1,82 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+#include <unistd.h>
+#include <kenv.h>
+
+#ifdef ENABLE_LLDPMED
+/* Fill in inventory stuff:
+    - hardware version: smbios.system.version
+    - firmware version: smbios.bios.version
+    - software version: `uname -r`
+    - serial number: smbios.system.serial
+    - manufacturer: smbios.system.maker
+    - model: smbios.system.product
+    - asset: smbios.chassis.tag
+*/
+
+static char *
+dmi_get(char *file)
+{
+	char buffer[100] = {};
+
+	log_debug("localchassis", "DMI request for %s", file);
+	if (kenv(KENV_GET, file, buffer, sizeof(buffer) - 1) == -1) {
+		log_debug("localchassis", "cannot get %s", file);
+		return NULL;
+	}
+	if (strlen(buffer)) return strdup(buffer);
+	return NULL;
+}
+
+char *
+dmi_hw()
+{
+	return dmi_get("smbios.system.version");
+}
+
+char *
+dmi_fw()
+{
+	return dmi_get("smbios.bios.version");
+}
+
+char *
+dmi_sn()
+{
+	return dmi_get("smbios.system.serial");
+}
+
+char *
+dmi_manuf()
+{
+	return dmi_get("smbios.system.maker");
+}
+
+char *
+dmi_model()
+{
+	return dmi_get("smibios.system.product");
+}
+
+char *
+dmi_asset()
+{
+	return dmi_get("smibios.chassis.tag");
+}
+#endif
diff --git a/src/daemon/dmi-linux.c b/src/daemon/dmi-linux.c
new file mode 100644
index 0000000..47a6d1b
--- /dev/null
+++ b/src/daemon/dmi-linux.c
@@ -0,0 +1,90 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2009 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+#include <unistd.h>
+
+#ifdef ENABLE_LLDPMED
+/* Fill in inventory stuff:
+    - hardware version: /sys/class/dmi/id/product_version
+    - firmware version: /sys/class/dmi/id/bios_version
+    - software version: `uname -r`
+    - serial number: /sys/class/dmi/id/product_serial
+    - manufacturer: /sys/class/dmi/id/sys_vendor
+    - model: /sys/class/dmi/id/product_name
+    - asset: /sys/class/dmi/id/chassis_asset_tag
+*/
+
+static char *
+dmi_get(const char *file)
+{
+	int dmi, s;
+	char buffer[100] = {};
+
+	log_debug("localchassis", "DMI request for file %s", file);
+	if ((dmi = priv_open(file)) < 0) {
+		log_debug("localchassis", "cannot get DMI file %s", file);
+		return NULL;
+	}
+	if ((s = read(dmi, buffer, sizeof(buffer))) == -1) {
+		log_debug("localchassis", "cannot read DMI file %s", file);
+		close(dmi);
+		return NULL;
+	}
+	close(dmi);
+	buffer[sizeof(buffer) - 1] = '\0';
+	if ((s > 0) && (buffer[s - 1] == '\n')) buffer[s - 1] = '\0';
+	if (strlen(buffer)) return strdup(buffer);
+	return NULL;
+}
+
+char *
+dmi_hw()
+{
+	return dmi_get(SYSFS_CLASS_DMI "product_version");
+}
+
+char *
+dmi_fw()
+{
+	return dmi_get(SYSFS_CLASS_DMI "bios_version");
+}
+
+char *
+dmi_sn()
+{
+	return dmi_get(SYSFS_CLASS_DMI "product_serial");
+}
+
+char *
+dmi_manuf()
+{
+	return dmi_get(SYSFS_CLASS_DMI "sys_vendor");
+}
+
+char *
+dmi_model()
+{
+	return dmi_get(SYSFS_CLASS_DMI "product_name");
+}
+
+char *
+dmi_asset()
+{
+	return dmi_get(SYSFS_CLASS_DMI "chassis_asset_tag");
+}
+#endif
diff --git a/src/daemon/dmi-openbsd.c b/src/daemon/dmi-openbsd.c
new file mode 100644
index 0000000..a226829
--- /dev/null
+++ b/src/daemon/dmi-openbsd.c
@@ -0,0 +1,73 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#ifdef ENABLE_LLDPMED
+
+static char *
+dmi_get(int what, const char *descr)
+{
+	char result[100] = {};
+	size_t len = sizeof(result) - 1;
+	int mib[2] = { CTL_HW, what };
+	if (sysctl(mib, 2, result, &len, NULL, 0) == -1) {
+		log_debug("localchassis", "cannot get %s", descr);
+		return NULL;
+	}
+	log_debug("localchassis", "got `%s` for %s", result, descr);
+	return strdup(result);
+}
+
+char *
+dmi_hw()
+{
+	return dmi_get(HW_VERSION, "hardware revision");
+}
+
+char *
+dmi_fw()
+{
+	return NULL;
+}
+
+char *
+dmi_sn()
+{
+	return dmi_get(HW_SERIALNO, "serial number");
+}
+
+char *
+dmi_manuf()
+{
+	return dmi_get(HW_VENDOR, "hardware vendor");
+}
+
+char *
+dmi_model()
+{
+	return dmi_get(HW_PRODUCT, "hardware product");
+}
+
+char *
+dmi_asset()
+{
+	return dmi_get(HW_UUID, "hardware UUID");
+}
+#endif
diff --git a/src/daemon/dmi-osx.c b/src/daemon/dmi-osx.c
new file mode 100644
index 0000000..cde8676
--- /dev/null
+++ b/src/daemon/dmi-osx.c
@@ -0,0 +1,109 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <IOKit/IOKitLib.h>
+
+#ifdef ENABLE_LLDPMED
+static char *
+dmi_get(const char *classname, CFStringRef property)
+{
+	char *result = NULL;
+	CFMutableDictionaryRef matching = NULL;
+	CFTypeRef cfres = NULL;
+	io_service_t service = 0;
+	matching = IOServiceMatching(classname);
+	if (!matching) {
+		log_debug("localchassis", "cannot get %s class from registry",
+		    classname);
+		goto end;
+	}
+	service = IOServiceGetMatchingService(kIOMasterPortDefault, matching);
+	if (!service) {
+		log_warnx("localchassis", "cannot get matching %s class from registry",
+		    classname);
+		goto end;
+	}
+	cfres = IORegistryEntryCreateCFProperty(service, property, kCFAllocatorDefault,
+	    kNilOptions);
+	if (!cfres) {
+		log_debug("localchassis",
+		    "cannot find property %s in class %s in registry",
+		    CFStringGetCStringPtr(property, kCFStringEncodingMacRoman),
+		    classname);
+		goto end;
+	}
+
+	if (CFGetTypeID(cfres) == CFStringGetTypeID())
+		result = strdup(CFStringGetCStringPtr((CFStringRef)cfres,
+		    kCFStringEncodingMacRoman));
+	else if (CFGetTypeID(cfres) == CFDataGetTypeID()) {
+		/* OK, we know this is a string. */
+		result = calloc(1, CFDataGetLength((CFDataRef)cfres) + 1);
+		if (!result) goto end;
+		memcpy(result, CFDataGetBytePtr((CFDataRef)cfres),
+		    CFDataGetLength((CFDataRef)cfres));
+	} else
+		log_debug("localchassis", "unknown type for property %s in class %s",
+		    CFStringGetCStringPtr(property, kCFStringEncodingMacRoman),
+		    classname);
+
+end:
+	if (cfres) CFRelease(cfres);
+	if (service) IOObjectRelease(service);
+	return result;
+}
+
+char *
+dmi_hw()
+{
+	return dmi_get("IOPlatformExpertDevice", CFSTR("version"));
+}
+
+char *
+dmi_fw()
+{
+	/* Dunno where it is. Maybe in SMC? */
+	return NULL;
+}
+
+char *
+dmi_sn()
+{
+	return dmi_get("IOPlatformExpertDevice", CFSTR("IOPlatformSerialNumber"));
+}
+
+char *
+dmi_manuf()
+{
+	return dmi_get("IOPlatformExpertDevice", CFSTR("manufacturer"));
+}
+
+char *
+dmi_model()
+{
+	return dmi_get("IOPlatformExpertDevice", CFSTR("model"));
+}
+
+char *
+dmi_asset()
+{
+	return dmi_get("IOPlatformExpertDevice", CFSTR("board-id"));
+}
+#endif
diff --git a/src/daemon/dtrace2systemtap.awk b/src/daemon/dtrace2systemtap.awk
new file mode 100644
index 0000000..3761008
--- /dev/null
+++ b/src/daemon/dtrace2systemtap.awk
@@ -0,0 +1,25 @@
+#!/usr/bin/awk -f
+
+# Convert a simple dtrace probe files into a tapset. Heavily inspired
+# by dtrace2systemtap.pl from libvirt
+
+($1 == "provider") {
+    provider = $2
+}
+
+($1 == "probe") {
+    name = substr($2, 0, index($2, "(") - 1)
+    split(substr($0, index($0, "(") + 1, index($0, ")") - index($0, "(") - 1),
+          args, /, /)
+    printf "probe %s.%s = process(\"%s/%s\").provider(\"%s\").mark(\"%s\") {\n", provider, name, sbindir, provider, provider, name
+    for (arg in args) {
+        match(args[arg], /^(.+[^a-z_])([a-z_]+)$/, aarg)
+        type = aarg[1]
+        argname = aarg[2]
+        if (type == "char *")
+            printf "   %s = user_string($arg%d);\n", argname, arg
+        else
+            printf "   %s = $arg%d;\n", argname, arg
+    }
+    printf "}\n\n"
+}
diff --git a/src/daemon/event.c b/src/daemon/event.c
new file mode 100644
index 0000000..971500f
--- /dev/null
+++ b/src/daemon/event.c
@@ -0,0 +1,911 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+#include "trace.h"
+
+#include <unistd.h>
+#include <signal.h>
+#include <errno.h>
+#include <time.h>
+#include <fcntl.h>
+#if defined(__clang__)
+#  pragma clang diagnostic push
+#  pragma clang diagnostic ignored "-Wdocumentation"
+#endif
+#include <event2/event.h>
+#include <event2/bufferevent.h>
+#include <event2/buffer.h>
+#if defined(__clang__)
+#  pragma clang diagnostic pop
+#endif
+
+#define EVENT_BUFFER 1024
+
+static void
+levent_log_cb(int severity, const char *msg)
+{
+	switch (severity) {
+	case _EVENT_LOG_DEBUG:
+		log_debug("libevent", "%s", msg);
+		break;
+	case _EVENT_LOG_MSG:
+		log_info("libevent", "%s", msg);
+		break;
+	case _EVENT_LOG_WARN:
+		log_warnx("libevent", "%s", msg);
+		break;
+	case _EVENT_LOG_ERR:
+		log_warnx("libevent", "%s", msg);
+		break;
+	}
+}
+
+struct lldpd_events {
+	TAILQ_ENTRY(lldpd_events) next;
+	struct event *ev;
+};
+TAILQ_HEAD(ev_l, lldpd_events);
+
+#define levent_snmp_fds(cfg) ((struct ev_l *)(cfg)->g_snmp_fds)
+#define levent_hardware_fds(hardware) ((struct ev_l *)(hardware)->h_recv)
+
+#ifdef USE_SNMP
+#  include <net-snmp/net-snmp-config.h>
+#  include <net-snmp/net-snmp-includes.h>
+#  include <net-snmp/agent/net-snmp-agent-includes.h>
+#  include <net-snmp/agent/snmp_vars.h>
+
+/* Compatibility with older versions of NetSNMP */
+#  ifndef HAVE_SNMP_SELECT_INFO2
+#    define netsnmp_large_fd_set fd_set
+#    define snmp_read2 snmp_read
+#    define snmp_select_info2 snmp_select_info
+#    define netsnmp_large_fd_set_init(...)
+#    define netsnmp_large_fd_set_cleanup(...)
+#    define NETSNMP_LARGE_FD_SET FD_SET
+#    define NETSNMP_LARGE_FD_CLR FD_CLR
+#    define NETSNMP_LARGE_FD_ZERO FD_ZERO
+#    define NETSNMP_LARGE_FD_ISSET FD_ISSET
+#  else
+#    include <net-snmp/library/large_fd_set.h>
+#  endif
+
+static void levent_snmp_update(struct lldpd *);
+
+/*
+ * Callback function when we have something to read from SNMP.
+ *
+ * This function is called because we have a read event on one SNMP
+ * file descriptor. When need to call snmp_read() on it.
+ */
+static void
+levent_snmp_read(evutil_socket_t fd, short what, void *arg)
+{
+	struct lldpd *cfg = arg;
+	netsnmp_large_fd_set fdset;
+	(void)what;
+	netsnmp_large_fd_set_init(&fdset, FD_SETSIZE);
+	NETSNMP_LARGE_FD_ZERO(&fdset);
+	NETSNMP_LARGE_FD_SET(fd, &fdset);
+	snmp_read2(&fdset);
+	levent_snmp_update(cfg);
+}
+
+/*
+ * Callback function for a SNMP timeout.
+ *
+ * A SNMP timeout has occurred. Call `snmp_timeout()` to handle it.
+ */
+static void
+levent_snmp_timeout(evutil_socket_t fd, short what, void *arg)
+{
+	struct lldpd *cfg = arg;
+	(void)what;
+	(void)fd;
+	snmp_timeout();
+	run_alarms();
+	levent_snmp_update(cfg);
+}
+
+/*
+ * Watch a new SNMP FD.
+ *
+ * @param base The libevent base we are working on.
+ * @param fd The file descriptor we want to watch.
+ *
+ * The file descriptor is appended to the list of file descriptors we
+ * want to watch.
+ */
+static void
+levent_snmp_add_fd(struct lldpd *cfg, int fd)
+{
+	struct event_base *base = cfg->g_base;
+	struct lldpd_events *snmpfd = calloc(1, sizeof(struct lldpd_events));
+	if (!snmpfd) {
+		log_warn("event", "unable to allocate memory for new SNMP event");
+		return;
+	}
+	levent_make_socket_nonblocking(fd);
+	if ((snmpfd->ev = event_new(base, fd, EV_READ | EV_PERSIST, levent_snmp_read,
+		 cfg)) == NULL) {
+		log_warnx("event", "unable to allocate a new SNMP event for FD %d", fd);
+		free(snmpfd);
+		return;
+	}
+	if (event_add(snmpfd->ev, NULL) == -1) {
+		log_warnx("event", "unable to schedule new SNMP event for FD %d", fd);
+		event_free(snmpfd->ev);
+		free(snmpfd);
+		return;
+	}
+	TAILQ_INSERT_TAIL(levent_snmp_fds(cfg), snmpfd, next);
+}
+
+/*
+ * Update SNMP event loop.
+ *
+ * New events are added and some other are removed. This function
+ * should be called every time a SNMP event happens: either when
+ * handling a SNMP packet, a SNMP timeout or when sending a SNMP
+ * packet. This function will keep libevent in sync with NetSNMP.
+ *
+ * @param base The libevent base we are working on.
+ */
+static void
+levent_snmp_update(struct lldpd *cfg)
+{
+	int maxfd = 0;
+	int block = 1;
+	struct timeval timeout;
+	static int howmany = 0;
+	int added = 0, removed = 0, current = 0;
+	struct lldpd_events *snmpfd, *snmpfd_next;
+
+	/* snmp_select_info() can be tricky to understand. We set `block` to
+	   1 to means that we don't request a timeout. snmp_select_info()
+	   will reset `block` to 0 if it wants us to setup a timeout. In
+	   this timeout, `snmp_timeout()` should be invoked.
+
+	   Each FD in `fdset` will need to be watched for reading. If one of
+	   them become active, `snmp_read()` should be called on it.
+	*/
+
+	netsnmp_large_fd_set fdset;
+	netsnmp_large_fd_set_init(&fdset, FD_SETSIZE);
+	NETSNMP_LARGE_FD_ZERO(&fdset);
+	snmp_select_info2(&maxfd, &fdset, &timeout, &block);
+
+	/* We need to untrack any event whose FD is not in `fdset`
+	   anymore */
+	for (snmpfd = TAILQ_FIRST(levent_snmp_fds(cfg)); snmpfd; snmpfd = snmpfd_next) {
+		snmpfd_next = TAILQ_NEXT(snmpfd, next);
+		if (event_get_fd(snmpfd->ev) >= maxfd ||
+		    (!NETSNMP_LARGE_FD_ISSET(event_get_fd(snmpfd->ev), &fdset))) {
+			event_free(snmpfd->ev);
+			TAILQ_REMOVE(levent_snmp_fds(cfg), snmpfd, next);
+			free(snmpfd);
+			removed++;
+		} else {
+			NETSNMP_LARGE_FD_CLR(event_get_fd(snmpfd->ev), &fdset);
+			current++;
+		}
+	}
+
+	/* Invariant: FD in `fdset` are not in list of FD */
+	for (int fd = 0; fd < maxfd; fd++) {
+		if (NETSNMP_LARGE_FD_ISSET(fd, &fdset)) {
+			levent_snmp_add_fd(cfg, fd);
+			added++;
+		}
+	}
+	current += added;
+	if (howmany != current) {
+		log_debug("event",
+		    "added %d events, removed %d events, total of %d events", added,
+		    removed, current);
+		howmany = current;
+	}
+
+	/* If needed, handle timeout */
+	if (evtimer_add(cfg->g_snmp_timeout, block ? NULL : &timeout) == -1)
+		log_warnx("event", "unable to schedule timeout function for SNMP");
+
+	netsnmp_large_fd_set_cleanup(&fdset);
+}
+#endif /* USE_SNMP */
+
+struct lldpd_one_client {
+	TAILQ_ENTRY(lldpd_one_client) next;
+	struct lldpd *cfg;
+	struct bufferevent *bev;
+	int subscribed; /* Is this client subscribed to changes? */
+};
+TAILQ_HEAD(, lldpd_one_client) lldpd_clients;
+
+static void
+levent_ctl_free_client(struct lldpd_one_client *client)
+{
+	if (client && client->bev) bufferevent_free(client->bev);
+	if (client) {
+		TAILQ_REMOVE(&lldpd_clients, client, next);
+		free(client);
+	}
+}
+
+static void
+levent_ctl_close_clients()
+{
+	struct lldpd_one_client *client, *client_next;
+	for (client = TAILQ_FIRST(&lldpd_clients); client; client = client_next) {
+		client_next = TAILQ_NEXT(client, next);
+		levent_ctl_free_client(client);
+	}
+}
+
+static ssize_t
+levent_ctl_send(struct lldpd_one_client *client, int type, void *data, size_t len)
+{
+	struct bufferevent *bev = client->bev;
+	struct hmsg_header hdr = { .len = len, .type = type };
+	bufferevent_disable(bev, EV_WRITE);
+	if (bufferevent_write(bev, &hdr, sizeof(struct hmsg_header)) == -1 ||
+	    (len > 0 && bufferevent_write(bev, data, len) == -1)) {
+		log_warnx("event", "unable to create answer to client");
+		levent_ctl_free_client(client);
+		return -1;
+	}
+	bufferevent_enable(bev, EV_WRITE);
+	return len;
+}
+
+void
+levent_ctl_notify(char *ifname, int state, struct lldpd_port *neighbor)
+{
+	struct lldpd_one_client *client, *client_next;
+	struct lldpd_neighbor_change neigh = { .ifname = ifname,
+		.state = state,
+		.neighbor = neighbor };
+	void *output = NULL;
+	ssize_t output_len = 0;
+
+	/* Don't use TAILQ_FOREACH, the client may be deleted in case of errors. */
+	log_debug("control", "notify clients of neighbor changes");
+	for (client = TAILQ_FIRST(&lldpd_clients); client; client = client_next) {
+		client_next = TAILQ_NEXT(client, next);
+		if (!client->subscribed) continue;
+
+		if (output == NULL) {
+			/* Ugly hack: we don't want to transmit a list of
+			 * ports. We patch the port to avoid this. */
+			TAILQ_ENTRY(lldpd_port) backup_p_entries;
+			memcpy(&backup_p_entries, &neighbor->p_entries,
+			    sizeof(backup_p_entries));
+			memset(&neighbor->p_entries, 0, sizeof(backup_p_entries));
+			output_len = lldpd_neighbor_change_serialize(&neigh, &output);
+			memcpy(&neighbor->p_entries, &backup_p_entries,
+			    sizeof(backup_p_entries));
+
+			if (output_len <= 0) {
+				log_warnx("event",
+				    "unable to serialize changed neighbor");
+				return;
+			}
+		}
+
+		levent_ctl_send(client, NOTIFICATION, output, output_len);
+	}
+
+	free(output);
+}
+
+static ssize_t
+levent_ctl_send_cb(void *out, int type, void *data, size_t len)
+{
+	struct lldpd_one_client *client = out;
+	return levent_ctl_send(client, type, data, len);
+}
+
+static void
+levent_ctl_recv(struct bufferevent *bev, void *ptr)
+{
+	struct lldpd_one_client *client = ptr;
+	struct evbuffer *buffer = bufferevent_get_input(bev);
+	size_t buffer_len = evbuffer_get_length(buffer);
+	struct hmsg_header hdr;
+	void *data = NULL;
+
+	log_debug("control", "receive data on Unix socket");
+	if (buffer_len < sizeof(struct hmsg_header)) return; /* Not enough data yet */
+	if (evbuffer_copyout(buffer, &hdr, sizeof(struct hmsg_header)) !=
+	    sizeof(struct hmsg_header)) {
+		log_warnx("event", "not able to read header");
+		return;
+	}
+	if (hdr.len > HMSG_MAX_SIZE) {
+		log_warnx("event", "message received is too large");
+		goto recv_error;
+	}
+
+	if (buffer_len < hdr.len + sizeof(struct hmsg_header))
+		return; /* Not enough data yet */
+	if (hdr.len > 0 && (data = malloc(hdr.len)) == NULL) {
+		log_warnx("event", "not enough memory");
+		goto recv_error;
+	}
+	evbuffer_drain(buffer, sizeof(struct hmsg_header));
+	if (hdr.len > 0) evbuffer_remove(buffer, data, hdr.len);
+
+	/* Currently, we should not receive notification acknowledgment. But if
+	 * we receive one, we can discard it. */
+	if (hdr.len == 0 && hdr.type == NOTIFICATION) return;
+	if (client_handle_client(client->cfg, levent_ctl_send_cb, client, hdr.type,
+		data, hdr.len, &client->subscribed) == -1)
+		goto recv_error;
+	free(data);
+	return;
+
+recv_error:
+	free(data);
+	levent_ctl_free_client(client);
+}
+
+static void
+levent_ctl_event(struct bufferevent *bev, short events, void *ptr)
+{
+	struct lldpd_one_client *client = ptr;
+	if (events & BEV_EVENT_ERROR) {
+		log_warnx("event", "an error occurred with client: %s",
+		    evutil_socket_error_to_string(EVUTIL_SOCKET_ERROR()));
+		levent_ctl_free_client(client);
+	} else if (events & BEV_EVENT_EOF) {
+		log_debug("event", "client has been disconnected");
+		levent_ctl_free_client(client);
+	}
+}
+
+static void
+levent_ctl_accept(evutil_socket_t fd, short what, void *arg)
+{
+	struct lldpd *cfg = arg;
+	struct lldpd_one_client *client = NULL;
+	int s;
+	(void)what;
+
+	log_debug("control", "accept a new connection");
+	if ((s = accept(fd, NULL, NULL)) == -1) {
+		log_warn("event", "unable to accept connection from socket");
+		return;
+	}
+	client = calloc(1, sizeof(struct lldpd_one_client));
+	if (!client) {
+		log_warnx("event", "unable to allocate memory for new client");
+		close(s);
+		goto accept_failed;
+	}
+	client->cfg = cfg;
+	levent_make_socket_nonblocking(s);
+	TAILQ_INSERT_TAIL(&lldpd_clients, client, next);
+	if ((client->bev = bufferevent_socket_new(cfg->g_base, s,
+		 BEV_OPT_CLOSE_ON_FREE)) == NULL) {
+		log_warnx("event",
+		    "unable to allocate a new buffer event for new client");
+		close(s);
+		goto accept_failed;
+	}
+	bufferevent_setcb(client->bev, levent_ctl_recv, NULL, levent_ctl_event, client);
+	bufferevent_enable(client->bev, EV_READ | EV_WRITE);
+	log_debug("event", "new client accepted");
+	/* coverity[leaked_handle]
+	   s has been saved by bufferevent_socket_new */
+	return;
+accept_failed:
+	levent_ctl_free_client(client);
+}
+
+static void
+levent_priv(evutil_socket_t fd, short what, void *arg)
+{
+	struct event_base *base = arg;
+	ssize_t n;
+	int err;
+	char one;
+	(void)what;
+	/* Check if we have some data available. We need to pass the socket in
+	 * non-blocking mode to be able to run the check without disruption. */
+	levent_make_socket_nonblocking(fd);
+	n = read(fd, &one, 1);
+	err = errno;
+	levent_make_socket_blocking(fd);
+
+	switch (n) {
+	case -1:
+		if (err == EAGAIN || err == EWOULDBLOCK) /* No data, all good */
+			return;
+		log_warnx("event", "unable to poll monitor process, exit");
+		break;
+	case 0:
+		log_warnx("event", "monitor process has terminated, exit");
+		break;
+	default:
+		/* This is a bit unsafe as we are now out-of-sync with the
+		 * monitor. It would be safer to request 0 byte, but some OS
+		 * (illumos) seem to take the shortcut that by asking 0 byte,
+		 * we can just return 0 byte. */
+		log_warnx("event",
+		    "received unexpected data from monitor process, exit");
+		break;
+	}
+	event_base_loopbreak(base);
+}
+
+static void
+levent_dump(evutil_socket_t fd, short what, void *arg)
+{
+	struct event_base *base = arg;
+	(void)fd;
+	(void)what;
+	log_debug("event", "dumping all events");
+	event_base_dump_events(base, stderr);
+}
+static void
+levent_stop(evutil_socket_t fd, short what, void *arg)
+{
+	struct event_base *base = arg;
+	(void)fd;
+	(void)what;
+	event_base_loopbreak(base);
+}
+
+static void
+levent_update_and_send(evutil_socket_t fd, short what, void *arg)
+{
+	struct lldpd *cfg = arg;
+	struct timeval tv;
+	long interval_ms = cfg->g_config.c_tx_interval;
+
+	(void)fd;
+	(void)what;
+	lldpd_loop(cfg);
+	if (cfg->g_iface_event != NULL) interval_ms *= 20;
+	if (interval_ms < 30000) interval_ms = 30000;
+	tv.tv_sec = interval_ms / 1000;
+	tv.tv_usec = (interval_ms % 1000) * 1000;
+	event_add(cfg->g_main_loop, &tv);
+}
+
+void
+levent_update_now(struct lldpd *cfg)
+{
+	if (cfg->g_main_loop) event_active(cfg->g_main_loop, EV_TIMEOUT, 1);
+}
+
+void
+levent_send_now(struct lldpd *cfg)
+{
+	struct lldpd_hardware *hardware;
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+		if (hardware->h_timer)
+			event_active(hardware->h_timer, EV_TIMEOUT, 1);
+		else
+			log_warnx("event", "BUG: no timer present for interface %s",
+			    hardware->h_ifname);
+	}
+}
+
+static void
+levent_init(struct lldpd *cfg)
+{
+	/* Setup libevent */
+	log_debug("event", "initialize libevent");
+	event_set_log_callback(levent_log_cb);
+	if (!(cfg->g_base = event_base_new()))
+		fatalx("event", "unable to create a new libevent base");
+	log_info("event", "libevent %s initialized with %s method", event_get_version(),
+	    event_base_get_method(cfg->g_base));
+
+	/* Setup SNMP */
+#ifdef USE_SNMP
+	if (cfg->g_snmp) {
+		agent_init(cfg, cfg->g_snmp_agentx);
+		cfg->g_snmp_timeout =
+		    evtimer_new(cfg->g_base, levent_snmp_timeout, cfg);
+		if (!cfg->g_snmp_timeout)
+			fatalx("event", "unable to setup timeout function for SNMP");
+		if ((cfg->g_snmp_fds = malloc(sizeof(struct ev_l))) == NULL)
+			fatalx("event", "unable to allocate memory for SNMP events");
+		TAILQ_INIT(levent_snmp_fds(cfg));
+	}
+#endif
+
+	/* Setup loop that will run every X seconds. */
+	log_debug("event", "register loop timer");
+	if (!(cfg->g_main_loop =
+		    event_new(cfg->g_base, -1, 0, levent_update_and_send, cfg)))
+		fatalx("event", "unable to setup main timer");
+	event_active(cfg->g_main_loop, EV_TIMEOUT, 1);
+
+	/* Setup unix socket */
+	struct event *ctl_event;
+	log_debug("event", "register Unix socket");
+	TAILQ_INIT(&lldpd_clients);
+	levent_make_socket_nonblocking(cfg->g_ctl);
+	if ((ctl_event = event_new(cfg->g_base, cfg->g_ctl, EV_READ | EV_PERSIST,
+		 levent_ctl_accept, cfg)) == NULL)
+		fatalx("event", "unable to setup control socket event");
+	event_add(ctl_event, NULL);
+
+	/* Somehow monitor the monitor process */
+	struct event *monitor_event;
+	log_debug("event", "monitor the monitor process");
+	if ((monitor_event = event_new(cfg->g_base, priv_fd(PRIV_UNPRIVILEGED),
+		 EV_READ | EV_PERSIST, levent_priv, cfg->g_base)) == NULL)
+		fatalx("event", "unable to monitor monitor process");
+	event_add(monitor_event, NULL);
+
+	/* Signals */
+	log_debug("event", "register signals");
+	evsignal_add(evsignal_new(cfg->g_base, SIGUSR1, levent_dump, cfg->g_base),
+	    NULL);
+	evsignal_add(evsignal_new(cfg->g_base, SIGINT, levent_stop, cfg->g_base), NULL);
+	evsignal_add(evsignal_new(cfg->g_base, SIGTERM, levent_stop, cfg->g_base),
+	    NULL);
+}
+
+/* Initialize libevent and start the event loop */
+void
+levent_loop(struct lldpd *cfg)
+{
+	levent_init(cfg);
+	lldpd_loop(cfg);
+#ifdef USE_SNMP
+	if (cfg->g_snmp) levent_snmp_update(cfg);
+#endif
+
+	/* libevent loop */
+	do {
+		TRACE(LLDPD_EVENT_LOOP());
+		if (event_base_got_break(cfg->g_base) ||
+		    event_base_got_exit(cfg->g_base))
+			break;
+	} while (event_base_loop(cfg->g_base, EVLOOP_ONCE) == 0);
+
+	if (cfg->g_iface_timer_event != NULL) event_free(cfg->g_iface_timer_event);
+
+#ifdef USE_SNMP
+	if (cfg->g_snmp) agent_shutdown();
+#endif /* USE_SNMP */
+
+	levent_ctl_close_clients();
+}
+
+/* Release libevent resources */
+void
+levent_shutdown(struct lldpd *cfg)
+{
+	if (cfg->g_iface_event) event_free(cfg->g_iface_event);
+	if (cfg->g_cleanup_timer) event_free(cfg->g_cleanup_timer);
+	event_base_free(cfg->g_base);
+}
+
+static void
+levent_hardware_recv(evutil_socket_t fd, short what, void *arg)
+{
+	struct lldpd_hardware *hardware = arg;
+	struct lldpd *cfg = hardware->h_cfg;
+	(void)what;
+	log_debug("event", "received something for %s", hardware->h_ifname);
+	lldpd_recv(cfg, hardware, fd);
+	levent_schedule_cleanup(cfg);
+}
+
+void
+levent_hardware_init(struct lldpd_hardware *hardware)
+{
+	log_debug("event", "initialize events for %s", hardware->h_ifname);
+	if ((hardware->h_recv = malloc(sizeof(struct ev_l))) == NULL) {
+		log_warnx("event", "unable to allocate memory for %s",
+		    hardware->h_ifname);
+		return;
+	}
+	TAILQ_INIT(levent_hardware_fds(hardware));
+}
+
+void
+levent_hardware_add_fd(struct lldpd_hardware *hardware, int fd)
+{
+	struct lldpd_events *hfd = NULL;
+	if (!hardware->h_recv) return;
+
+	hfd = calloc(1, sizeof(struct lldpd_events));
+	if (!hfd) {
+		log_warnx("event", "unable to allocate new event for %s",
+		    hardware->h_ifname);
+		return;
+	}
+	levent_make_socket_nonblocking(fd);
+	if ((hfd->ev = event_new(hardware->h_cfg->g_base, fd, EV_READ | EV_PERSIST,
+		 levent_hardware_recv, hardware)) == NULL) {
+		log_warnx("event", "unable to allocate a new event for %s",
+		    hardware->h_ifname);
+		free(hfd);
+		return;
+	}
+	if (event_add(hfd->ev, NULL) == -1) {
+		log_warnx("event", "unable to schedule new event for %s",
+		    hardware->h_ifname);
+		event_free(hfd->ev);
+		free(hfd);
+		return;
+	}
+	TAILQ_INSERT_TAIL(levent_hardware_fds(hardware), hfd, next);
+}
+
+void
+levent_hardware_release(struct lldpd_hardware *hardware)
+{
+	struct lldpd_events *ev, *ev_next;
+	if (hardware->h_timer) {
+		event_free(hardware->h_timer);
+		hardware->h_timer = NULL;
+	}
+	if (!hardware->h_recv) return;
+
+	log_debug("event", "release events for %s", hardware->h_ifname);
+	for (ev = TAILQ_FIRST(levent_hardware_fds(hardware)); ev; ev = ev_next) {
+		ev_next = TAILQ_NEXT(ev, next);
+		/* We may close several time the same FD. This is harmless. */
+		close(event_get_fd(ev->ev));
+		event_free(ev->ev);
+		TAILQ_REMOVE(levent_hardware_fds(hardware), ev, next);
+		free(ev);
+	}
+	free(levent_hardware_fds(hardware));
+}
+
+static void
+levent_iface_trigger(evutil_socket_t fd, short what, void *arg)
+{
+	struct lldpd *cfg = arg;
+	log_debug("event", "triggering update of all interfaces");
+	lldpd_update_localports(cfg);
+}
+
+static void
+levent_iface_recv(evutil_socket_t fd, short what, void *arg)
+{
+	struct lldpd *cfg = arg;
+	char buffer[EVENT_BUFFER];
+	int n;
+
+	if (cfg->g_iface_cb == NULL) {
+		/* Discard the message */
+		while (1) {
+			n = read(fd, buffer, sizeof(buffer));
+			if (n == -1 && (errno == EWOULDBLOCK || errno == EAGAIN)) break;
+			if (n == -1) {
+				log_warn("event",
+				    "unable to receive interface change notification message");
+				return;
+			}
+			if (n == 0) {
+				log_warnx("event",
+				    "end of file reached while getting interface change notification message");
+				return;
+			}
+		}
+	} else {
+		cfg->g_iface_cb(cfg);
+	}
+
+	/* Schedule local port update. We don't run it right away because we may
+	 * receive a batch of events like this. */
+	struct timeval one_sec = { 1, 0 };
+	TRACE(LLDPD_INTERFACES_NOTIFICATION());
+	log_debug("event",
+	    "received notification change, schedule an update of all interfaces in one second");
+	if (cfg->g_iface_timer_event == NULL) {
+		if ((cfg->g_iface_timer_event = evtimer_new(cfg->g_base,
+			 levent_iface_trigger, cfg)) == NULL) {
+			log_warnx("event",
+			    "unable to create a new event to trigger interface update");
+			return;
+		}
+	}
+	if (evtimer_add(cfg->g_iface_timer_event, &one_sec) == -1) {
+		log_warnx("event", "unable to schedule interface updates");
+		return;
+	}
+}
+
+int
+levent_iface_subscribe(struct lldpd *cfg, int socket)
+{
+	log_debug("event", "subscribe to interface changes from socket %d", socket);
+	levent_make_socket_nonblocking(socket);
+	cfg->g_iface_event = event_new(cfg->g_base, socket, EV_READ | EV_PERSIST,
+	    levent_iface_recv, cfg);
+	if (cfg->g_iface_event == NULL) {
+		log_warnx("event",
+		    "unable to allocate a new event for interface changes");
+		return -1;
+	}
+	if (event_add(cfg->g_iface_event, NULL) == -1) {
+		log_warnx("event", "unable to schedule new interface changes event");
+		event_free(cfg->g_iface_event);
+		cfg->g_iface_event = NULL;
+		return -1;
+	}
+	return 0;
+}
+
+static void
+levent_trigger_cleanup(evutil_socket_t fd, short what, void *arg)
+{
+	struct lldpd *cfg = arg;
+	lldpd_cleanup(cfg);
+}
+
+void
+levent_schedule_cleanup(struct lldpd *cfg)
+{
+	log_debug("event", "schedule next cleanup");
+	if (cfg->g_cleanup_timer != NULL) {
+		event_free(cfg->g_cleanup_timer);
+	}
+	cfg->g_cleanup_timer = evtimer_new(cfg->g_base, levent_trigger_cleanup, cfg);
+	if (cfg->g_cleanup_timer == NULL) {
+		log_warnx("event", "unable to allocate a new event for cleanup tasks");
+		return;
+	}
+
+	/* Compute the next TTL event */
+	struct timeval tv = { cfg->g_config.c_ttl, 0 };
+	time_t now = time(NULL);
+	time_t next;
+	struct lldpd_hardware *hardware;
+	struct lldpd_port *port;
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			if (now >= port->p_lastupdate + port->p_ttl) {
+				tv.tv_sec = 0;
+				log_debug("event",
+				    "immediate cleanup on port %s (%lld, %d, %lld)",
+				    hardware->h_ifname, (long long)now, port->p_ttl,
+				    (long long)port->p_lastupdate);
+				break;
+			}
+			next = port->p_ttl - (now - port->p_lastupdate);
+			if (next < tv.tv_sec) tv.tv_sec = next;
+		}
+	}
+
+	log_debug("event", "next cleanup in %ld seconds", (long)tv.tv_sec);
+	if (event_add(cfg->g_cleanup_timer, &tv) == -1) {
+		log_warnx("event", "unable to schedule cleanup task");
+		event_free(cfg->g_cleanup_timer);
+		cfg->g_cleanup_timer = NULL;
+		return;
+	}
+}
+
+static void
+levent_send_pdu(evutil_socket_t fd, short what, void *arg)
+{
+	struct lldpd_hardware *hardware = arg;
+	int tx_interval = hardware->h_cfg->g_config.c_tx_interval;
+
+	log_debug("event", "trigger sending PDU for port %s", hardware->h_ifname);
+	lldpd_send(hardware);
+
+#ifdef ENABLE_LLDPMED
+	if (hardware->h_tx_fast > 0) hardware->h_tx_fast--;
+
+	if (hardware->h_tx_fast > 0)
+		tx_interval = hardware->h_cfg->g_config.c_tx_fast_interval * 1000;
+#endif
+
+	struct timeval tv;
+	tv.tv_sec = tx_interval / 1000;
+	tv.tv_usec = (tx_interval % 1000) * 1000;
+	if (event_add(hardware->h_timer, &tv) == -1) {
+		log_warnx("event", "unable to re-register timer event for port %s",
+		    hardware->h_ifname);
+		event_free(hardware->h_timer);
+		hardware->h_timer = NULL;
+		return;
+	}
+}
+
+void
+levent_schedule_pdu(struct lldpd_hardware *hardware)
+{
+	log_debug("event", "schedule sending PDU on %s", hardware->h_ifname);
+	if (hardware->h_timer == NULL) {
+		hardware->h_timer =
+		    evtimer_new(hardware->h_cfg->g_base, levent_send_pdu, hardware);
+		if (hardware->h_timer == NULL) {
+			log_warnx("event", "unable to schedule PDU sending for port %s",
+			    hardware->h_ifname);
+			return;
+		}
+	}
+
+	struct timeval tv = { 0, 0 };
+	if (event_add(hardware->h_timer, &tv) == -1) {
+		log_warnx("event", "unable to register timer event for port %s",
+		    hardware->h_ifname);
+		event_free(hardware->h_timer);
+		hardware->h_timer = NULL;
+		return;
+	}
+}
+
+int
+levent_make_socket_nonblocking(int fd)
+{
+	int flags;
+	if ((flags = fcntl(fd, F_GETFL, NULL)) < 0) {
+		log_warn("event", "fcntl(%d, F_GETFL)", fd);
+		return -1;
+	}
+	if (flags & O_NONBLOCK) return 0;
+	if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1) {
+		log_warn("event", "fcntl(%d, F_SETFL)", fd);
+		return -1;
+	}
+	return 0;
+}
+
+int
+levent_make_socket_blocking(int fd)
+{
+	int flags;
+	if ((flags = fcntl(fd, F_GETFL, NULL)) < 0) {
+		log_warn("event", "fcntl(%d, F_GETFL)", fd);
+		return -1;
+	}
+	if (!(flags & O_NONBLOCK)) return 0;
+	if (fcntl(fd, F_SETFL, flags & ~O_NONBLOCK) == -1) {
+		log_warn("event", "fcntl(%d, F_SETFL)", fd);
+		return -1;
+	}
+	return 0;
+}
+
+#ifdef HOST_OS_LINUX
+/* Receive and log error from a socket when there is suspicion of an error. */
+void
+levent_recv_error(int fd, const char *source)
+{
+	do {
+		ssize_t n;
+		char buf[1024] = {};
+		struct msghdr msg = { .msg_control = buf,
+			.msg_controllen = sizeof(buf) };
+		if ((n = recvmsg(fd, &msg, MSG_ERRQUEUE | MSG_DONTWAIT)) <= 0) {
+			return;
+		}
+		struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
+		if (cmsg == NULL)
+			log_warnx("event", "received unknown error on %s", source);
+		else
+			log_warnx("event", "received error (level=%d/type=%d) on %s",
+			    cmsg->cmsg_level, cmsg->cmsg_type, source);
+	} while (1);
+}
+#endif
diff --git a/src/daemon/forward-bsd.c b/src/daemon/forward-bsd.c
new file mode 100644
index 0000000..1f930de
--- /dev/null
+++ b/src/daemon/forward-bsd.c
@@ -0,0 +1,31 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2013 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+int
+interfaces_routing_enabled(struct lldpd *cfg)
+{
+	(void)cfg;
+	int n, mib[4] = { CTL_NET, PF_INET, IPPROTO_IP, IPCTL_FORWARDING };
+	size_t len = sizeof(int);
+	if (sysctl(mib, 4, &n, &len, NULL, 0) != -1) return (n == 1);
+	return -1;
+}
diff --git a/src/daemon/forward-linux.c b/src/daemon/forward-linux.c
new file mode 100644
index 0000000..6308445
--- /dev/null
+++ b/src/daemon/forward-linux.c
@@ -0,0 +1,59 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2013 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#include <unistd.h>
+
+static int
+ip_forwarding_enabled(int af)
+{
+	int fd, rc = -1;
+	const char *fname;
+	char status;
+
+	if (af == LLDPD_AF_IPV4)
+		fname = PROCFS_SYS_NET "ipv4/ip_forward";
+	else if (af == LLDPD_AF_IPV6)
+		fname = PROCFS_SYS_NET "ipv6/conf/all/forwarding";
+	else
+		return -1;
+
+	if ((fd = priv_open(fname)) < 0) return -1;
+
+	if (read(fd, &status, 1) == 1) rc = (status == '1');
+
+	close(fd);
+	return rc;
+}
+
+int
+interfaces_routing_enabled(struct lldpd *cfg)
+{
+	(void)cfg;
+	int rc;
+
+	rc = ip_forwarding_enabled(LLDPD_AF_IPV4);
+	/*
+	 * Report being a router if IPv4 forwarding is enabled.
+	 * In case of error also stop the execution right away.
+	 * If IPv4 forwarding is disabled we'll check the IPv6 status.
+	 */
+	if (rc != 0) return rc;
+
+	return ip_forwarding_enabled(LLDPD_AF_IPV6);
+}
diff --git a/src/daemon/forward-solaris.c b/src/daemon/forward-solaris.c
new file mode 100644
index 0000000..b44a110
--- /dev/null
+++ b/src/daemon/forward-solaris.c
@@ -0,0 +1,27 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2013 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+int
+interfaces_routing_enabled(struct lldpd *cfg)
+{
+	/* Dunno how to get this for Solaris. See the commit introducing Solaris
+	   support (maybe c3e340b6be8add4eb3a41882847a96e66793e82c) for a
+	   solution which does not work in a chroot. */
+	return 0;
+}
diff --git a/src/daemon/frame.c b/src/daemon/frame.c
new file mode 100644
index 0000000..adc4629
--- /dev/null
+++ b/src/daemon/frame.c
@@ -0,0 +1,66 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2009 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+/**
+ * Compute the checksum as 16-bit word.
+ */
+u_int16_t
+frame_checksum(const u_char *cp, int len, int cisco)
+{
+	unsigned int sum = 0, v = 0;
+	int oddbyte = 0;
+
+	while ((len -= 2) >= 0) {
+		sum += *cp++ << 8;
+		sum += *cp++;
+	}
+	if ((oddbyte = len & 1) != 0) v = *cp;
+
+	/* The remaining byte seems to be handled oddly by Cisco. From function
+	 * dissect_cdp() in wireshark. 2014/6/14,zhengy@yealink.com:
+	 *
+	 * CDP doesn't adhere to RFC 1071 section 2. (B). It incorrectly assumes
+	 * checksums are calculated on a big endian platform, therefore i.s.o.
+	 * padding odd sized data with a zero byte _at the end_ it sets the last
+	 * big endian _word_ to contain the last network _octet_. This byteswap
+	 * has to be done on the last octet of network data before feeding it to
+	 * the Internet checksum routine.
+	 * CDP checksumming code has a bug in the addition of this last _word_
+	 * as a signed number into the long word intermediate checksum. When
+	 * reducing this long to word size checksum an off-by-one error can be
+	 * made. This off-by-one error is compensated for in the last _word_ of
+	 * the network data.
+	 */
+	if (oddbyte) {
+		if (cisco) {
+			if (v & 0x80) {
+				sum += 0xff << 8;
+				sum += v - 1;
+			} else {
+				sum += v;
+			}
+		} else {
+			sum += v << 8;
+		}
+	}
+
+	sum = (sum >> 16) + (sum & 0xffff);
+	sum += sum >> 16;
+	return (0xffff & ~sum);
+}
diff --git a/src/daemon/frame.h b/src/daemon/frame.h
new file mode 100644
index 0000000..714de09
--- /dev/null
+++ b/src/daemon/frame.h
@@ -0,0 +1,102 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2009 Vincent Bernat <bernat@luffy.cx>
+ * Copyright (c) 2014 Michael Chapman
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _FRAME_H
+#define _FRAME_H
+
+static union {
+	uint8_t f_uint8;
+	uint16_t f_uint16;
+	uint32_t f_uint32;
+} types;
+
+/* This set of macro are used to build packets. The current position in buffer
+ * is `pos'. The length of the remaining space in buffer is `length'. `type'
+ * should be a member of `types'.
+ *
+ * This was stolen from ladvd which was adapted from Net::CDP. The original
+ * author of those macros, Michael Chapman, has relicensed those macros under
+ * the ISC license. */
+
+#define POKE(value, type, func)                                                      \
+  ((length >= sizeof(type)) &&                                                       \
+      (type = func(value), memcpy(pos, &type, sizeof(type)), length -= sizeof(type), \
+	  pos += sizeof(type), 1))
+#define POKE_UINT8(value) POKE(value, types.f_uint8, )
+#define POKE_UINT16(value) POKE(value, types.f_uint16, htons)
+#define POKE_UINT32(value) POKE(value, types.f_uint32, htonl)
+#define POKE_BYTES(value, bytes) \
+  ((length >= (bytes)) &&        \
+      (memcpy(pos, value, bytes), length -= (bytes), pos += (bytes), 1))
+#define POKE_SAVE(where) (where = pos, 1)
+#define POKE_RESTORE(where)      \
+  do {                           \
+    if ((where) > pos)           \
+      length -= ((where)-pos);   \
+    else                         \
+      length += (pos - (where)); \
+    pos = (where);               \
+  } while (0)
+
+/* This set of macro are used to parse packets. The same variable as for POKE_*
+ * are used. There is no check on boundaries. */
+
+#define PEEK(type, func)                                                          \
+  (memcpy(&type, pos, sizeof(type)), length -= sizeof(type), pos += sizeof(type), \
+      func(type))
+#define PEEK_UINT8 PEEK(types.f_uint8, )
+#define PEEK_UINT16 PEEK(types.f_uint16, ntohs)
+#define PEEK_UINT32 PEEK(types.f_uint32, ntohl)
+#define PEEK_BYTES(value, bytes) \
+  do {                           \
+    memcpy(value, pos, bytes);   \
+    length -= (bytes);           \
+    pos += (bytes);              \
+  } while (0)
+#define PEEK_DISCARD(bytes) \
+  do {                      \
+    length -= (bytes);      \
+    pos += (bytes);         \
+  } while (0)
+#define PEEK_DISCARD_UINT8 PEEK_DISCARD(1)
+#define PEEK_DISCARD_UINT16 PEEK_DISCARD(2)
+#define PEEK_DISCARD_UINT32 PEEK_DISCARD(4)
+#define PEEK_CMP(value, bytes) \
+  (length -= (bytes), pos += (bytes), memcmp(pos - bytes, value, bytes))
+#define PEEK_SAVE POKE_SAVE
+#define PEEK_RESTORE POKE_RESTORE
+
+/* LLDP specific. We need a `tlv' pointer. */
+#define POKE_START_LLDP_TLV(type) (tlv = pos, POKE_UINT16(type << 9))
+#define POKE_END_LLDP_TLV                                  \
+  (memcpy(&types.f_uint16, tlv, sizeof(uint16_t)),         \
+      types.f_uint16 |= htons((pos - (tlv + 2)) & 0x01ff), \
+      memcpy(tlv, &types.f_uint16, sizeof(uint16_t)), 1)
+
+/* Same for CDP */
+#define POKE_START_CDP_TLV(type) ((void)POKE_UINT16(type), tlv = pos, POKE_UINT16(0))
+#define POKE_END_CDP_TLV                  \
+  (types.f_uint16 = htons(pos - tlv + 2), \
+      memcpy(tlv, &types.f_uint16, sizeof(uint16_t)), 1)
+
+/* Same for EDP */
+#define POKE_START_EDP_TLV(type) \
+  ((void)POKE_UINT8(EDP_TLV_MARKER), (void)POKE_UINT8(type), tlv = pos, POKE_UINT16(0))
+#define POKE_END_EDP_TLV POKE_END_CDP_TLV
+
+#endif /* _FRAME_H */
diff --git a/src/daemon/interfaces-bpf.c b/src/daemon/interfaces-bpf.c
new file mode 100644
index 0000000..2091eaf
--- /dev/null
+++ b/src/daemon/interfaces-bpf.c
@@ -0,0 +1,117 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2013 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+#include <unistd.h>
+#include <errno.h>
+#include <net/bpf.h>
+
+struct bpf_buffer {
+	size_t len; /* Total length of the buffer */
+	struct bpf_hdr data[0];
+};
+
+int
+ifbpf_phys_init(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+	struct bpf_buffer *buffer = NULL;
+	int fd = -1;
+
+	log_debug("interfaces", "initialize ethernet device %s", hardware->h_ifname);
+	if ((fd = priv_iface_init(hardware->h_ifindex, hardware->h_ifname)) == -1)
+		return -1;
+
+	/* Allocate receive buffer */
+	hardware->h_data = buffer = malloc(ETHER_MAX_LEN +
+	    BPF_WORDALIGN(sizeof(struct bpf_hdr)) + sizeof(struct bpf_buffer));
+	if (buffer == NULL) {
+		log_warn("interfaces", "unable to allocate buffer space for BPF on %s",
+		    hardware->h_ifname);
+		goto end;
+	}
+	buffer->len = ETHER_MAX_LEN + BPF_WORDALIGN(sizeof(struct bpf_hdr));
+
+	/* Setup multicast */
+	interfaces_setup_multicast(cfg, hardware->h_ifname, 0);
+
+	hardware->h_sendfd = fd; /* Send */
+
+	levent_hardware_add_fd(hardware, fd); /* Receive */
+	log_debug("interfaces", "interface %s initialized (fd=%d)", hardware->h_ifname,
+	    fd);
+	return 0;
+
+end:
+	if (fd >= 0) close(fd);
+	free(buffer);
+	hardware->h_data = NULL;
+	return -1;
+}
+
+/* Ethernet send/receive through BPF */
+static int
+ifbpf_eth_send(struct lldpd *cfg, struct lldpd_hardware *hardware, char *buffer,
+    size_t size)
+{
+	log_debug("interfaces", "send PDU to ethernet device %s (fd=%d)",
+	    hardware->h_ifname, hardware->h_sendfd);
+	return write(hardware->h_sendfd, buffer, size);
+}
+
+static int
+ifbpf_eth_recv(struct lldpd *cfg, struct lldpd_hardware *hardware, int fd, char *buffer,
+    size_t size)
+{
+	struct bpf_buffer *bpfbuf = hardware->h_data;
+	struct bpf_hdr *bh;
+	log_debug("interfaces", "receive PDU from ethernet device %s",
+	    hardware->h_ifname);
+
+	/* We assume we have only receive one packet (unbuffered mode). Dunno if
+	 * this is correct. */
+	if (read(fd, bpfbuf->data, bpfbuf->len) == -1) {
+		if (errno == ENETDOWN) {
+			log_debug("interfaces",
+			    "error while receiving frame on %s (network down)",
+			    hardware->h_ifname);
+		} else {
+			log_warn("interfaces", "error while receiving frame on %s",
+			    hardware->h_ifname);
+			hardware->h_rx_discarded_cnt++;
+		}
+		return -1;
+	}
+	bh = (struct bpf_hdr *)bpfbuf->data;
+	if (bh->bh_caplen < size) size = bh->bh_caplen;
+	memcpy(buffer, (char *)bpfbuf->data + bh->bh_hdrlen, size);
+
+	return size;
+}
+
+static int
+ifbpf_eth_close(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+	log_debug("interfaces", "close ethernet device %s", hardware->h_ifname);
+	interfaces_setup_multicast(cfg, hardware->h_ifname, 1);
+	return 0;
+}
+
+struct lldpd_ops bpf_ops = {
+	.send = ifbpf_eth_send,
+	.recv = ifbpf_eth_recv,
+	.cleanup = ifbpf_eth_close,
+};
diff --git a/src/daemon/interfaces-bsd.c b/src/daemon/interfaces-bsd.c
new file mode 100644
index 0000000..a8248fe
--- /dev/null
+++ b/src/daemon/interfaces-bsd.c
@@ -0,0 +1,641 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#include <unistd.h>
+#include <ifaddrs.h>
+#include <errno.h>
+#include <ctype.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/ioctl.h>
+#include <net/bpf.h>
+#include <net/if_types.h>
+#include <net/if_media.h>
+#include <net/if_dl.h>
+#if defined HOST_OS_FREEBSD
+#  include <net/if_vlan_var.h>
+#  include <net/if_bridgevar.h>
+#  include <net/if_lagg.h>
+#elif defined HOST_OS_DRAGONFLY
+#  include <net/vlan/if_vlan_var.h>
+#  include <net/bridge/if_bridgevar.h>
+#elif defined HOST_OS_OPENBSD
+#  include <net/if_vlan_var.h>
+#  include <net/if_bridge.h>
+#  include <net/if_trunk.h>
+#elif defined HOST_OS_NETBSD
+#  include <net/if_vlanvar.h>
+#  include <net/if_bridgevar.h>
+#  include <net/agr/if_agrioctl.h>
+#elif defined HOST_OS_OSX
+#  include <osx/if_vlan_var.h>
+#  include <osx/if_bridgevar.h>
+#  include <osx/if_bond_var.h>
+#endif
+
+#ifndef IFDESCRSIZE
+#  define IFDESCRSIZE 64
+#endif
+
+static int
+ifbsd_check_wireless(struct lldpd *cfg, struct ifaddrs *ifaddr,
+    struct interfaces_device *iface)
+{
+	struct ifmediareq ifmr = {};
+	strlcpy(ifmr.ifm_name, iface->name, sizeof(ifmr.ifm_name));
+	if (ioctl(cfg->g_sock, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0 ||
+	    IFM_TYPE(ifmr.ifm_current) != IFM_IEEE80211)
+		return 0; /* Not wireless either */
+	iface->type |= IFACE_WIRELESS_T | IFACE_PHYSICAL_T;
+	return 0;
+}
+
+static void
+ifbsd_check_bridge(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_device *master)
+{
+	static size_t ifbic_len = 64;
+	struct ifbreq *req = NULL;
+	struct ifbifconf bifc = {};
+
+retry_alloc:
+	if ((req = realloc(req, ifbic_len)) == NULL) {
+		log_warn("interfaces", "unable to allocate memory to query bridge %s",
+		    master->name);
+		free(bifc.ifbic_req);
+		return;
+	}
+	bifc.ifbic_len = ifbic_len;
+	bifc.ifbic_req = req;
+
+#if defined HOST_OS_FREEBSD || defined HOST_OS_NETBSD || defined HOST_OS_OSX || \
+    defined HOST_OS_DRAGONFLY
+	struct ifdrv ifd = { .ifd_cmd = BRDGGIFS,
+		.ifd_len = sizeof(bifc),
+		.ifd_data = &bifc };
+
+	strlcpy(ifd.ifd_name, master->name, sizeof(ifd.ifd_name));
+	if (ioctl(cfg->g_sock, SIOCGDRVSPEC, (caddr_t)&ifd) < 0) {
+		log_debug("interfaces", "%s is not a bridge", master->name);
+		return;
+	}
+#elif defined HOST_OS_OPENBSD
+	strlcpy(bifc.ifbic_name, master->name, sizeof(bifc.ifbic_name));
+	if (ioctl(cfg->g_sock, SIOCBRDGIFS, (caddr_t)&bifc) < 0) {
+		log_debug("interfaces", "%s is not a bridge", master->name);
+		return;
+	}
+#else
+#  error Unsupported OS
+#endif
+	if (bifc.ifbic_len >= ifbic_len) {
+		ifbic_len = bifc.ifbic_len + 1;
+		goto retry_alloc;
+	}
+	for (int i = 0; i < bifc.ifbic_len / sizeof(*req); i++) {
+		struct interfaces_device *slave =
+		    interfaces_nametointerface(interfaces, req[i].ifbr_ifsname);
+		if (slave == NULL) {
+			log_warnx("interfaces",
+			    "%s should be bridged to %s but we don't know %s",
+			    req[i].ifbr_ifsname, master->name, req[i].ifbr_ifsname);
+			continue;
+		}
+		log_debug("interfaces", "%s is bridged to %s", slave->name,
+		    master->name);
+		slave->upper = master;
+	}
+	master->type |= IFACE_BRIDGE_T;
+}
+
+static void
+ifbsd_check_bond(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_device *master)
+{
+#if defined HOST_OS_OPENBSD
+/* OpenBSD is the same as FreeBSD, just lagg->trunk */
+#  define lagg_reqport trunk_reqport
+#  define lagg_reqall trunk_reqall
+#  define SIOCGLAGG SIOCGTRUNK
+#  define LAGG_MAX_PORTS TRUNK_MAX_PORTS
+#endif
+#if defined HOST_OS_OPENBSD || defined HOST_OS_FREEBSD
+	struct lagg_reqport rpbuf[LAGG_MAX_PORTS];
+	struct lagg_reqall ra = { .ra_size = sizeof(rpbuf), .ra_port = rpbuf };
+	strlcpy(ra.ra_ifname, master->name, IFNAMSIZ);
+	if (ioctl(cfg->g_sock, SIOCGLAGG, (caddr_t)&ra) < 0) {
+		log_debug("interfaces", "%s is not a bond", master->name);
+		return;
+	}
+
+	for (int i = 0; i < ra.ra_ports; i++) {
+		struct interfaces_device *slave;
+		slave = interfaces_nametointerface(interfaces, rpbuf[i].rp_portname);
+		if (slave == NULL) {
+			log_warnx("interfaces",
+			    "%s should be enslaved to %s but we don't know %s",
+			    rpbuf[i].rp_portname, master->name, rpbuf[i].rp_portname);
+			continue;
+		}
+		log_debug("interfaces", "%s is enslaved to bond %s", slave->name,
+		    master->name);
+		slave->upper = master;
+	}
+	master->type |= IFACE_BOND_T;
+#elif defined HOST_OS_NETBSD
+	/* No max, we consider a maximum of 24 ports */
+	char buf[sizeof(struct agrportinfo) * 24] = {};
+	size_t buflen = sizeof(buf);
+	struct agrreq ar = { .ar_version = AGRREQ_VERSION,
+		.ar_cmd = AGRCMD_PORTLIST,
+		.ar_buf = buf,
+		.ar_buflen = buflen };
+	struct ifreq ifr = { .ifr_data = &ar };
+	struct agrportlist *apl = (void *)buf;
+	struct agrportinfo *api = (void *)(apl + 1);
+	strlcpy(ifr.ifr_name, master->name, sizeof(ifr.ifr_name));
+	if (ioctl(cfg->g_sock, SIOCGETAGR, &ifr) == -1) {
+		if (errno == E2BIG) {
+			log_warnx("interfaces",
+			    "%s is a too big aggregate. Please, report the problem",
+			    master->name);
+		} else {
+			log_debug("interfaces", "%s is not an aggregate", master->name);
+		}
+		return;
+	}
+	for (int i = 0; i < apl->apl_nports; i++, api++) {
+		struct interfaces_device *slave;
+		slave = interfaces_nametointerface(interfaces, api->api_ifname);
+		if (slave == NULL) {
+			log_warnx("interfaces",
+			    "%s should be enslaved to %s but we don't know %s",
+			    api->api_ifname, master->name, api->api_ifname);
+			continue;
+		}
+		log_debug("interfaces", "%s is enslaved to bond %s", slave->name,
+		    master->name);
+		slave->upper = master;
+	}
+	master->type |= IFACE_BOND_T;
+#elif defined HOST_OS_OSX
+	struct if_bond_req ibr = { .ibr_op = IF_BOND_OP_GET_STATUS,
+		.ibr_ibru = {
+		    .ibru_status = { .ibsr_version = IF_BOND_STATUS_REQ_VERSION } } };
+	struct ifreq ifr = { .ifr_data = (caddr_t)&ibr };
+	strlcpy(ifr.ifr_name, master->name, sizeof(ifr.ifr_name));
+	if (ioctl(cfg->g_sock, SIOCGIFBOND, (caddr_t)&ifr) < 0) {
+		log_debug("interfaces", "%s is not an aggregate", master->name);
+		return;
+	}
+	master->type |= IFACE_BOND_T;
+	if (ibr.ibr_ibru.ibru_status.ibsr_total == 0) {
+		log_debug("interfaces", "no members for bond %s", master->name);
+		return;
+	}
+
+	struct if_bond_status_req *ibsr_p = &ibr.ibr_ibru.ibru_status;
+	ibsr_p->ibsr_buffer =
+	    malloc(sizeof(struct if_bond_status) * ibsr_p->ibsr_total);
+	if (ibsr_p->ibsr_buffer == NULL) {
+		log_warnx("interfaces", "not enough memory to check bond members");
+		return;
+	}
+	ibsr_p->ibsr_count = ibsr_p->ibsr_total;
+	if (ioctl(cfg->g_sock, SIOCGIFBOND, (caddr_t)&ifr) < 0) {
+		log_warn("interfaces", "unable to get members for bond %s",
+		    master->name);
+		goto end;
+	}
+
+	struct if_bond_status *ibs_p = (struct if_bond_status *)ibsr_p->ibsr_buffer;
+	for (int i = 0; i < ibsr_p->ibsr_total; i++, ibs_p++) {
+		struct interfaces_device *slave;
+		slave = interfaces_nametointerface(interfaces, ibs_p->ibs_if_name);
+		if (slave == NULL) {
+			log_warnx("interfaces",
+			    "%s should be enslaved to %s but we don't know %s",
+			    ibs_p->ibs_if_name, master->name, ibs_p->ibs_if_name);
+			continue;
+		}
+		log_debug("interfaces", "%s is enslaved to bond %s", slave->name,
+		    master->name);
+		slave->upper = master;
+	}
+end:
+	free(ibsr_p->ibsr_buffer);
+#elif defined HOST_OS_DRAGONFLY
+	log_debug("interfaces", "DragonFly BSD does not support link aggregation");
+#else
+#  error Unsupported OS
+#endif
+}
+
+static void
+ifbsd_check_vlan(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_device *vlan)
+{
+	struct interfaces_device *lower;
+	struct vlanreq vreq = {};
+	struct ifreq ifr = { .ifr_data = (caddr_t)&vreq };
+	strlcpy(ifr.ifr_name, vlan->name, sizeof(ifr.ifr_name));
+	if (ioctl(cfg->g_sock, SIOCGETVLAN, (caddr_t)&ifr) < 0) {
+		log_debug("interfaces", "%s is not a VLAN", vlan->name);
+		return;
+	}
+	if (strlen(vreq.vlr_parent) == 0) {
+		log_debug("interfaces", "%s is a VLAN but has no lower interface",
+		    vlan->name);
+		vlan->lower = NULL;
+		vlan->type |= IFACE_VLAN_T;
+		return;
+	}
+	lower = interfaces_nametointerface(interfaces, vreq.vlr_parent);
+	if (lower == NULL) {
+		log_warnx("interfaces",
+		    "%s should be a VLAN of %s but %s does not exist", vlan->name,
+		    vreq.vlr_parent, vreq.vlr_parent);
+		return;
+	}
+	log_debug("interfaces", "%s is VLAN %d of %s", vlan->name, vreq.vlr_tag,
+	    lower->name);
+	vlan->lower = lower;
+	bitmap_set(vlan->vlan_bmap, vreq.vlr_tag);
+	vlan->type |= IFACE_VLAN_T;
+}
+
+static void
+ifbsd_check_physical(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_device *iface)
+{
+	if (iface->type &
+	    (IFACE_VLAN_T | IFACE_BOND_T | IFACE_BRIDGE_T | IFACE_PHYSICAL_T))
+		return;
+
+	if (!(iface->flags & (IFF_MULTICAST | IFF_BROADCAST))) {
+		log_debug("interfaces",
+		    "skip %s: not able to do multicast nor broadcast", iface->name);
+		return;
+	}
+	log_debug("interfaces", "%s is a physical interface", iface->name);
+	iface->type |= IFACE_PHYSICAL_T;
+}
+
+/* Remove any dangerous interface. Currently, only p2p0 is removed as it
+ * triggers some AirDrop functionality when we send something on it.
+ *  See: https://github.com/lldpd/lldpd/issues/61
+ */
+static void
+ifbsd_denylist(struct lldpd *cfg, struct interfaces_device_list *interfaces)
+{
+#ifdef HOST_OS_OSX
+	struct interfaces_device *iface = NULL;
+	TAILQ_FOREACH (iface, interfaces, next) {
+		int i;
+		if (strncmp(iface->name, "p2p", 3)) continue;
+		if (strlen(iface->name) < 4) continue;
+		for (i = 3;
+		     iface->name[i] != '\0' && isdigit((unsigned char)(iface->name[i]));
+		     i++)
+			;
+		if (iface->name[i] == '\0') {
+			log_debug("interfaces", "skip %s: AirDrop interface",
+			    iface->name);
+			iface->ignore = 1;
+		}
+	}
+#endif
+}
+
+static struct interfaces_device *
+ifbsd_extract_device(struct lldpd *cfg, struct ifaddrs *ifaddr)
+{
+	struct interfaces_device *iface = NULL;
+	struct sockaddr_dl *saddrdl =
+	    ALIGNED_CAST(struct sockaddr_dl *, ifaddr->ifa_addr);
+	if ((saddrdl->sdl_type != IFT_BRIDGE) && (saddrdl->sdl_type != IFT_L2VLAN) &&
+	    (saddrdl->sdl_type != IFT_ETHER)) {
+		log_debug("interfaces", "skip %s: not an ethernet device (%d)",
+		    ifaddr->ifa_name, saddrdl->sdl_type);
+		return NULL;
+	}
+	if ((iface = calloc(1, sizeof(struct interfaces_device))) == NULL) {
+		log_warn("interfaces", "unable to allocate memory for %s",
+		    ifaddr->ifa_name);
+		return NULL;
+	}
+
+	iface->index = saddrdl->sdl_index;
+	iface->name = strdup(ifaddr->ifa_name);
+	iface->flags = ifaddr->ifa_flags;
+
+	/* MAC address */
+	iface->address = malloc(ETHER_ADDR_LEN);
+	if (iface->address) memcpy(iface->address, LLADDR(saddrdl), ETHER_ADDR_LEN);
+
+		/* Grab description */
+#ifdef SIOCGIFDESCR
+#  if defined HOST_OS_FREEBSD || defined HOST_OS_OPENBSD
+	iface->alias = malloc(IFDESCRSIZE);
+	if (iface->alias) {
+#    if defined HOST_OS_FREEBSD
+		struct ifreq ifr = { .ifr_buffer = { .buffer = iface->alias,
+					 .length = IFDESCRSIZE } };
+#    else
+		struct ifreq ifr = { .ifr_data = (caddr_t)iface->alias };
+#    endif
+		strlcpy(ifr.ifr_name, ifaddr->ifa_name, sizeof(ifr.ifr_name));
+		if (ioctl(cfg->g_sock, SIOCGIFDESCR, (caddr_t)&ifr) < 0) {
+			free(iface->alias);
+			iface->alias = NULL;
+		}
+	}
+#  endif
+#endif /* SIOCGIFDESCR */
+
+	if (ifbsd_check_wireless(cfg, ifaddr, iface) == -1) {
+		interfaces_free_device(iface);
+		return NULL;
+	}
+
+	return iface;
+}
+
+static void
+ifbsd_extract(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_address_list *addresses, struct ifaddrs *ifaddr)
+{
+	struct interfaces_address *address = NULL;
+	struct interfaces_device *device = NULL;
+	if (!ifaddr->ifa_name) return;
+	if (!ifaddr->ifa_addr) return;
+	switch (ifaddr->ifa_addr->sa_family) {
+	case AF_LINK:
+		log_debug("interfaces", "grabbing information on interface %s",
+		    ifaddr->ifa_name);
+		device = ifbsd_extract_device(cfg, ifaddr);
+		if (device) {
+#if defined HOST_OS_OPENBSD
+			/* On OpenBSD, the interface can have IFF_RUNNING but be down.
+			 */
+			struct if_data *ifdata;
+			ifdata = ifaddr->ifa_data;
+			if (!LINK_STATE_IS_UP(ifdata->ifi_link_state))
+				device->flags &= ~IFF_RUNNING;
+#endif
+			TAILQ_INSERT_TAIL(interfaces, device, next);
+		}
+		break;
+	case AF_INET:
+	case AF_INET6:
+		log_debug("interfaces", "got an IP address on %s", ifaddr->ifa_name);
+		address = malloc(sizeof(struct interfaces_address));
+		if (address == NULL) {
+			log_warn("interfaces",
+			    "not enough memory for a new IP address on %s",
+			    ifaddr->ifa_name);
+			return;
+		}
+		address->flags = ifaddr->ifa_flags;
+		address->index = if_nametoindex(ifaddr->ifa_name);
+		memcpy(&address->address, ifaddr->ifa_addr,
+		    (ifaddr->ifa_addr->sa_family == AF_INET) ?
+			sizeof(struct sockaddr_in) :
+			sizeof(struct sockaddr_in6));
+		TAILQ_INSERT_TAIL(addresses, address, next);
+		break;
+	default:
+		log_debug("interfaces", "unhandled family %d for interface %s",
+		    ifaddr->ifa_addr->sa_family, ifaddr->ifa_name);
+	}
+}
+
+static void
+ifbsd_macphy(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+#ifdef ENABLE_DOT3
+	struct ifmediareq ifmr = {};
+#  ifdef HAVE_TYPEOF
+	typeof(ifmr.ifm_ulist[0]) media_list[32] = {};
+#  else
+	int media_list[32] = {};
+#  endif
+	ifmr.ifm_ulist = media_list;
+	ifmr.ifm_count = 32;
+	struct lldpd_port *port = &hardware->h_lport;
+	unsigned int duplex;
+	unsigned int media;
+	int advertised_ifmedia_to_rfc3636[][3] = {
+		{ IFM_10_T, LLDP_DOT3_LINK_AUTONEG_10BASE_T,
+		    LLDP_DOT3_LINK_AUTONEG_10BASET_FD },
+		{ IFM_10_STP, LLDP_DOT3_LINK_AUTONEG_10BASE_T,
+		    LLDP_DOT3_LINK_AUTONEG_10BASET_FD },
+		{ IFM_100_TX, LLDP_DOT3_LINK_AUTONEG_100BASE_TX,
+		    LLDP_DOT3_LINK_AUTONEG_100BASE_TXFD },
+		{ IFM_100_T4, LLDP_DOT3_LINK_AUTONEG_100BASE_T4,
+		    LLDP_DOT3_LINK_AUTONEG_100BASE_T4 },
+		{ IFM_100_T2, LLDP_DOT3_LINK_AUTONEG_100BASE_T2,
+		    LLDP_DOT3_LINK_AUTONEG_100BASE_T2FD },
+		{ IFM_1000_SX, LLDP_DOT3_LINK_AUTONEG_1000BASE_X,
+		    LLDP_DOT3_LINK_AUTONEG_1000BASE_XFD },
+		{ IFM_1000_LX, LLDP_DOT3_LINK_AUTONEG_1000BASE_X,
+		    LLDP_DOT3_LINK_AUTONEG_1000BASE_XFD },
+		{ IFM_1000_CX, LLDP_DOT3_LINK_AUTONEG_1000BASE_X,
+		    LLDP_DOT3_LINK_AUTONEG_1000BASE_XFD },
+		{ IFM_1000_T, LLDP_DOT3_LINK_AUTONEG_1000BASE_T,
+		    LLDP_DOT3_LINK_AUTONEG_1000BASE_TFD },
+		{ 0, 0, 0 }
+	};
+	int current_ifmedia_to_rfc3636[][3] = { { IFM_10_T, LLDP_DOT3_MAU_10BASETHD,
+						    LLDP_DOT3_MAU_10BASETFD },
+		{ IFM_10_STP, LLDP_DOT3_MAU_10BASETHD, LLDP_DOT3_MAU_10BASETFD },
+		{ IFM_10_2, LLDP_DOT3_MAU_10BASE2, LLDP_DOT3_MAU_10BASE2 },
+		{ IFM_10_5, LLDP_DOT3_MAU_10BASE5, LLDP_DOT3_MAU_10BASE5 },
+		{ IFM_100_TX, LLDP_DOT3_MAU_100BASETXHD, LLDP_DOT3_MAU_100BASETXFD },
+		{ IFM_100_FX, LLDP_DOT3_MAU_100BASEFXHD, LLDP_DOT3_MAU_100BASEFXFD },
+		{ IFM_100_T2, LLDP_DOT3_MAU_100BASET2HD, LLDP_DOT3_MAU_100BASET2FD },
+		{ IFM_1000_SX, LLDP_DOT3_MAU_1000BASESXHD, LLDP_DOT3_MAU_1000BASESXFD },
+		{ IFM_10_FL, LLDP_DOT3_MAU_10BASEFLHD, LLDP_DOT3_MAU_10BASEFLFD },
+		{ IFM_1000_LX, LLDP_DOT3_MAU_1000BASELXHD, LLDP_DOT3_MAU_1000BASELXFD },
+		{ IFM_1000_CX, LLDP_DOT3_MAU_1000BASECXHD, LLDP_DOT3_MAU_1000BASECXFD },
+		{ IFM_1000_T, LLDP_DOT3_MAU_1000BASETHD, LLDP_DOT3_MAU_1000BASETFD },
+		{ IFM_10G_LR, LLDP_DOT3_MAU_10GIGBASELR, LLDP_DOT3_MAU_10GIGBASELR },
+		{ IFM_10G_SR, LLDP_DOT3_MAU_10GIGBASESR, LLDP_DOT3_MAU_10GIGBASESR },
+		{ IFM_10G_CX4, LLDP_DOT3_MAU_10GIGBASELX4, LLDP_DOT3_MAU_10GIGBASELX4 },
+#  ifdef IFM_10G_T
+		{ IFM_10G_T, LLDP_DOT3_MAU_10GIGBASECX4, LLDP_DOT3_MAU_10GIGBASECX4 },
+#  endif
+#  ifdef IFM_10G_TWINAX
+		{ IFM_10G_TWINAX, LLDP_DOT3_MAU_10GIGBASECX4,
+		    LLDP_DOT3_MAU_10GIGBASECX4 },
+#  endif
+#  ifdef IFM_10G_TWINAX_LONG
+		{ IFM_10G_TWINAX_LONG, LLDP_DOT3_MAU_10GIGBASECX4,
+		    LLDP_DOT3_MAU_10GIGBASECX4 },
+#  endif
+#  ifdef IFM_10G_LRM
+		{ IFM_10G_LRM, LLDP_DOT3_MAU_10GIGBASELR, LLDP_DOT3_MAU_10GIGBASELR },
+#  endif
+#  ifdef IFM_10G_SFP_CU
+		{ IFM_10G_SFP_CU, LLDP_DOT3_MAU_10GIGBASECX4,
+		    LLDP_DOT3_MAU_10GIGBASECX4 },
+#  endif
+		{ 0, 0, 0 } };
+
+	log_debug("interfaces", "get MAC/phy for %s", hardware->h_ifname);
+	strlcpy(ifmr.ifm_name, hardware->h_ifname, sizeof(ifmr.ifm_name));
+	if (ioctl(cfg->g_sock, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
+		log_debug("interfaces", "unable to get media information from %s",
+		    hardware->h_ifname);
+		return;
+	}
+	if (IFM_TYPE(ifmr.ifm_current) != IFM_ETHER) {
+		log_warnx("interfaces",
+		    "cannot get media information from %s: not an ethernet device",
+		    hardware->h_ifname);
+		return;
+	}
+	if ((ifmr.ifm_status & IFM_ACTIVE) == 0) {
+		log_debug("interfaces", "interface %s is now down, skip",
+		    hardware->h_ifname);
+		return;
+	}
+	if (ifmr.ifm_count == 0) {
+		log_warnx("interfaces", "no media information available on %s",
+		    hardware->h_ifname);
+		return;
+	}
+	port->p_macphy.autoneg_support = port->p_macphy.autoneg_enabled = 0;
+	for (int m = 0; m < ifmr.ifm_count; m++) {
+		media = IFM_SUBTYPE(ifmr.ifm_ulist[m]);
+		duplex = !!(IFM_OPTIONS(ifmr.ifm_ulist[m]) & IFM_FDX);
+		if (media == IFM_AUTO) {
+			port->p_macphy.autoneg_support = 1;
+			port->p_macphy.autoneg_enabled =
+			    (IFM_SUBTYPE(ifmr.ifm_current) == IFM_AUTO);
+			continue;
+		}
+
+		int found = 0;
+		for (int j = 0; advertised_ifmedia_to_rfc3636[j][0]; j++) {
+			if (advertised_ifmedia_to_rfc3636[j][0] == media) {
+				port->p_macphy.autoneg_advertised |=
+				    advertised_ifmedia_to_rfc3636[j][1 + duplex];
+				found = 1;
+				break;
+			}
+		}
+		if (!found)
+			port->p_macphy.autoneg_advertised |=
+			    LLDP_DOT3_LINK_AUTONEG_OTHER;
+	}
+
+	port->p_macphy.mau_type = 0;
+	media = IFM_SUBTYPE(ifmr.ifm_active);
+	duplex = !!(IFM_OPTIONS(ifmr.ifm_active) & IFM_FDX);
+	for (int j = 0; current_ifmedia_to_rfc3636[j][0]; j++) {
+		if (current_ifmedia_to_rfc3636[j][0] == media) {
+			port->p_macphy.mau_type =
+			    current_ifmedia_to_rfc3636[j][1 + duplex];
+			break;
+		}
+	}
+#endif
+}
+
+extern struct lldpd_ops bpf_ops;
+void
+interfaces_update(struct lldpd *cfg)
+{
+	struct lldpd_hardware *hardware;
+	struct interfaces_device *iface;
+	struct interfaces_device_list *interfaces;
+	struct interfaces_address_list *addresses;
+	struct ifaddrs *ifaddrs = NULL, *ifaddr;
+
+	interfaces = malloc(sizeof(struct interfaces_device_list));
+	addresses = malloc(sizeof(struct interfaces_address_list));
+	if (interfaces == NULL || addresses == NULL) {
+		log_warnx("interfaces", "unable to allocate memory");
+		goto end;
+	}
+	TAILQ_INIT(interfaces);
+	TAILQ_INIT(addresses);
+	if (getifaddrs(&ifaddrs) < 0) {
+		log_warnx("interfaces", "unable to get list of interfaces");
+		goto end;
+	}
+
+	for (ifaddr = ifaddrs; ifaddr != NULL; ifaddr = ifaddr->ifa_next) {
+		ifbsd_extract(cfg, interfaces, addresses, ifaddr);
+	}
+	/* Link interfaces together if needed */
+	TAILQ_FOREACH (iface, interfaces, next) {
+		ifbsd_check_bridge(cfg, interfaces, iface);
+		ifbsd_check_bond(cfg, interfaces, iface);
+		ifbsd_check_vlan(cfg, interfaces, iface);
+		ifbsd_check_physical(cfg, interfaces, iface);
+	}
+
+	ifbsd_denylist(cfg, interfaces);
+	interfaces_helper_allowlist(cfg, interfaces);
+	interfaces_helper_physical(cfg, interfaces, &bpf_ops, ifbpf_phys_init);
+#ifdef ENABLE_DOT1
+	interfaces_helper_vlan(cfg, interfaces);
+#endif
+	interfaces_helper_mgmt(cfg, addresses, interfaces);
+	interfaces_helper_chassis(cfg, interfaces);
+
+	/* Mac/PHY */
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+		if (!hardware->h_flags) continue;
+		ifbsd_macphy(cfg, hardware);
+		interfaces_helper_promisc(cfg, hardware);
+	}
+
+	if (cfg->g_iface_event == NULL) {
+		int s;
+		log_debug("interfaces", "subscribe to route socket notifications");
+		if ((s = socket(PF_ROUTE, SOCK_RAW, 0)) < 0) {
+			log_warn("interfaces", "unable to open route socket");
+			goto end;
+		}
+
+#ifdef ROUTE_MSGFILTER
+		unsigned int rtfilter;
+		rtfilter = ROUTE_FILTER(RTM_IFINFO);
+		if (setsockopt(s, PF_ROUTE, ROUTE_MSGFILTER, &rtfilter,
+			sizeof(rtfilter)) == -1)
+			log_warn("interfaces",
+			    "unable to set filter for interface updates");
+#endif
+
+		if (levent_iface_subscribe(cfg, s) == -1) close(s);
+	}
+
+end:
+	interfaces_free_devices(interfaces);
+	interfaces_free_addresses(addresses);
+	if (ifaddrs) freeifaddrs(ifaddrs);
+}
+
+void
+interfaces_cleanup(struct lldpd *cfg)
+{
+}
diff --git a/src/daemon/interfaces-linux.c b/src/daemon/interfaces-linux.c
new file mode 100644
index 0000000..e764943
--- /dev/null
+++ b/src/daemon/interfaces-linux.c
@@ -0,0 +1,1046 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#include <stdio.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#if defined(__clang__)
+#  pragma clang diagnostic push
+#  pragma clang diagnostic ignored "-Wdocumentation"
+#endif
+#include <netinet/in.h>
+#include <linux/if_vlan.h>
+#include <linux/if_bonding.h>
+#include <linux/if_bridge.h>
+#include <linux/wireless.h>
+#include <linux/sockios.h>
+#include <linux/if_packet.h>
+#include <linux/ethtool.h>
+#if defined(__clang__)
+#  pragma clang diagnostic pop
+#endif
+
+#define SYSFS_PATH_MAX 256
+#define MAX_PORTS 1024
+#define MAX_BRIDGES 1024
+
+static int
+iflinux_eth_init(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+	int fd;
+
+	log_debug("interfaces", "initialize ethernet device %s", hardware->h_ifname);
+	if ((fd = priv_iface_init(hardware->h_ifindex, hardware->h_ifname)) == -1)
+		return -1;
+	hardware->h_sendfd = fd; /* Send */
+
+	interfaces_setup_multicast(cfg, hardware->h_ifname, 0);
+
+	levent_hardware_add_fd(hardware, fd); /* Receive */
+	log_debug("interfaces", "interface %s initialized (fd=%d)", hardware->h_ifname,
+	    fd);
+	return 0;
+}
+
+/* Generic ethernet send/receive */
+static int
+iflinux_eth_send(struct lldpd *cfg, struct lldpd_hardware *hardware, char *buffer,
+    size_t size)
+{
+	log_debug("interfaces", "send PDU to ethernet device %s (fd=%d)",
+	    hardware->h_ifname, hardware->h_sendfd);
+	return write(hardware->h_sendfd, buffer, size);
+}
+
+static int
+iflinux_generic_recv(struct lldpd_hardware *hardware, int fd, char *buffer, size_t size,
+    struct sockaddr_ll *from)
+{
+	int n, retry = 0;
+	socklen_t fromlen;
+
+retry:
+	fromlen = sizeof(*from);
+	memset(from, 0, fromlen);
+	if ((n = recvfrom(fd, buffer, size, 0, (struct sockaddr *)from, &fromlen)) ==
+	    -1) {
+		if (errno == EAGAIN && retry == 0) {
+			/* There may be an error queued in the socket. Clear it and
+			 * retry. */
+			levent_recv_error(fd, hardware->h_ifname);
+			retry++;
+			goto retry;
+		}
+		if (errno == ENETDOWN) {
+			log_debug("interfaces",
+			    "error while receiving frame on %s (network down)",
+			    hardware->h_ifname);
+		} else {
+			log_warn("interfaces",
+			    "error while receiving frame on %s (retry: %d)",
+			    hardware->h_ifname, retry);
+			hardware->h_rx_discarded_cnt++;
+		}
+		return -1;
+	}
+	if (from->sll_pkttype == PACKET_OUTGOING) return -1;
+	return n;
+}
+
+static int
+iflinux_eth_recv(struct lldpd *cfg, struct lldpd_hardware *hardware, int fd,
+    char *buffer, size_t size)
+{
+	int n;
+	struct sockaddr_ll from;
+
+	log_debug("interfaces", "receive PDU from ethernet device %s",
+	    hardware->h_ifname);
+	if ((n = iflinux_generic_recv(hardware, fd, buffer, size, &from)) == -1)
+		return -1;
+	return n;
+}
+
+static int
+iflinux_eth_close(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+	log_debug("interfaces", "close ethernet device %s", hardware->h_ifname);
+	interfaces_setup_multicast(cfg, hardware->h_ifname, 1);
+	return 0;
+}
+
+static struct lldpd_ops eth_ops = {
+	.send = iflinux_eth_send,
+	.recv = iflinux_eth_recv,
+	.cleanup = iflinux_eth_close,
+};
+
+static int
+iflinux_is_bridge(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_device *iface)
+{
+#ifdef ENABLE_OLDIES
+	struct interfaces_device *port;
+	char path[SYSFS_PATH_MAX];
+	int f;
+
+	if ((snprintf(path, SYSFS_PATH_MAX, SYSFS_CLASS_NET "%s/" SYSFS_BRIDGE_FDB,
+		iface->name)) >= SYSFS_PATH_MAX)
+		log_warnx("interfaces", "path truncated");
+	if ((f = priv_open(path)) < 0) return 0;
+	close(f);
+
+	/* Also grab all ports */
+	TAILQ_FOREACH (port, interfaces, next) {
+		if (port->upper) continue;
+		if (snprintf(path, SYSFS_PATH_MAX,
+			SYSFS_CLASS_NET "%s/" SYSFS_BRIDGE_PORT_SUBDIR "/%s/port_no",
+			iface->name, port->name) >= SYSFS_PATH_MAX)
+			log_warnx("interfaces", "path truncated");
+		if ((f = priv_open(path)) < 0) continue;
+		log_debug("interfaces", "port %s is bridged to %s", port->name,
+		    iface->name);
+		port->upper = iface;
+		close(f);
+	}
+
+	return 1;
+#else
+	return 0;
+#endif
+}
+
+static int
+iflinux_is_vlan(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_device *iface)
+{
+#ifdef ENABLE_OLDIES
+	struct vlan_ioctl_args ifv = {};
+	ifv.cmd = GET_VLAN_REALDEV_NAME_CMD;
+	strlcpy(ifv.device1, iface->name, sizeof(ifv.device1));
+	if (ioctl(cfg->g_sock, SIOCGIFVLAN, &ifv) >= 0) {
+		/* This is a VLAN, get the lower interface and the VID */
+		struct interfaces_device *lower =
+		    interfaces_nametointerface(interfaces, ifv.u.device2);
+		if (!lower) {
+			log_debug("interfaces",
+			    "unable to find lower interface for VLAN %s", iface->name);
+			return 0;
+		}
+
+		memset(&ifv, 0, sizeof(ifv));
+		ifv.cmd = GET_VLAN_VID_CMD;
+		strlcpy(ifv.device1, iface->name, sizeof(ifv.device1));
+		if (ioctl(cfg->g_sock, SIOCGIFVLAN, &ifv) < 0) {
+			log_debug("interfaces", "unable to find VID for VLAN %s",
+			    iface->name);
+			return 0;
+		}
+
+		iface->lower = lower;
+		bitmap_set(iface->vlan_bmap, ifv.u.VID);
+		return 1;
+	}
+#endif
+	return 0;
+}
+
+static int
+iflinux_is_bond(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_device *master)
+{
+#ifdef ENABLE_OLDIES
+	/* Shortcut if we detect the new team driver. Upper and lower links
+	 * should already be set with netlink in this case.  */
+	if (master->driver && !strcmp(master->driver, "team")) {
+		return 1;
+	}
+
+	struct ifreq ifr = {};
+	struct ifbond ifb = {};
+	strlcpy(ifr.ifr_name, master->name, sizeof(ifr.ifr_name));
+	ifr.ifr_data = (char *)&ifb;
+	if (ioctl(cfg->g_sock, SIOCBONDINFOQUERY, &ifr) >= 0) {
+		while (ifb.num_slaves--) {
+			struct ifslave ifs;
+			memset(&ifr, 0, sizeof(ifr));
+			memset(&ifs, 0, sizeof(ifs));
+			strlcpy(ifr.ifr_name, master->name, sizeof(ifr.ifr_name));
+			ifr.ifr_data = (char *)&ifs;
+			ifs.slave_id = ifb.num_slaves;
+			if (ioctl(cfg->g_sock, SIOCBONDSLAVEINFOQUERY, &ifr) >= 0) {
+				struct interfaces_device *slave =
+				    interfaces_nametointerface(interfaces,
+					ifs.slave_name);
+				if (slave == NULL) continue;
+				if (slave->upper) continue;
+				log_debug("interfaces",
+				    "interface %s is enslaved to %s", slave->name,
+				    master->name);
+				slave->upper = master;
+			}
+		}
+		return 1;
+	}
+#endif
+	return 0;
+}
+
+/**
+ * Get permanent MAC from ethtool.
+ *
+ * Return 0 on success, -1 on error.
+ */
+static int
+iflinux_get_permanent_mac_ethtool(struct lldpd *cfg,
+    struct interfaces_device_list *interfaces, struct interfaces_device *iface)
+{
+	int ret = -1;
+	struct ifreq ifr = {};
+	struct ethtool_perm_addr *epaddr =
+	    calloc(sizeof(struct ethtool_perm_addr) + ETHER_ADDR_LEN, 1);
+	if (epaddr == NULL) goto end;
+
+	strlcpy(ifr.ifr_name, iface->name, sizeof(ifr.ifr_name));
+	epaddr->cmd = ETHTOOL_GPERMADDR;
+	epaddr->size = ETHER_ADDR_LEN;
+	ifr.ifr_data = (caddr_t)epaddr;
+	if (ioctl(cfg->g_sock, SIOCETHTOOL, &ifr) == -1) {
+		static int once = 0;
+		if (errno == EPERM && !once) {
+			log_warnx("interfaces",
+			    "no permission to get permanent MAC address for %s (requires 2.6.19+)",
+			    iface->name);
+			once = 1;
+			goto end;
+		}
+		if (errno != EPERM)
+			log_warn("interfaces",
+			    "cannot get permanent MAC address for %s", iface->name);
+		goto end;
+	}
+	if (epaddr->data[0] != 0 || epaddr->data[1] != 0 || epaddr->data[2] != 0 ||
+	    epaddr->data[3] != 0 || epaddr->data[4] != 0 || epaddr->data[5] != 0) {
+		memcpy(iface->address, epaddr->data, ETHER_ADDR_LEN);
+		ret = 0;
+		goto end;
+	}
+	log_debug("interfaces", "cannot get permanent MAC for %s (all 0)", iface->name);
+end:
+	free(epaddr);
+	return ret;
+}
+
+/**
+ * Get permanent MAC address for a bond device.
+ */
+static void
+iflinux_get_permanent_mac_bond(struct lldpd *cfg,
+    struct interfaces_device_list *interfaces, struct interfaces_device *iface)
+{
+	struct interfaces_device *master = iface->upper;
+	int f, state = 0;
+	FILE *netbond;
+	const char *slaveif = "Slave Interface: ";
+	const char *hwaddr = "Permanent HW addr: ";
+	u_int8_t mac[ETHER_ADDR_LEN];
+	char path[SYSFS_PATH_MAX];
+	char line[100];
+
+	/* We have a bond, we need to query it to get real MAC addresses */
+	if (snprintf(path, SYSFS_PATH_MAX, "/proc/net/bonding/%s", master->name) >=
+	    SYSFS_PATH_MAX) {
+		log_warnx("interfaces", "path truncated");
+		return;
+	}
+	if ((f = priv_open(path)) < 0) {
+		if (snprintf(path, SYSFS_PATH_MAX, "/proc/self/net/bonding/%s",
+			master->name) >= SYSFS_PATH_MAX) {
+			log_warnx("interfaces", "path truncated");
+			return;
+		}
+		f = priv_open(path);
+	}
+	if (f < 0) {
+		log_warnx("interfaces", "unable to get permanent MAC address for %s",
+		    iface->name);
+		return;
+	}
+	if ((netbond = fdopen(f, "r")) == NULL) {
+		log_warn("interfaces", "unable to read stream from %s", path);
+		close(f);
+		return;
+	}
+	/* State 0:
+	   We parse the file to search "Slave Interface: ". If found, go to
+	   state 1.
+	   State 1:
+	   We parse the file to search "Permanent HW addr: ". If found, we get
+	   the mac.
+	*/
+	while (fgets(line, sizeof(line), netbond)) {
+		switch (state) {
+		case 0:
+			if (strncmp(line, slaveif, strlen(slaveif)) == 0) {
+				if (line[strlen(line) - 1] == '\n')
+					line[strlen(line) - 1] = '\0';
+				if (strcmp(iface->name, line + strlen(slaveif)) == 0)
+					state++;
+			}
+			break;
+		case 1:
+			if (strncmp(line, hwaddr, strlen(hwaddr)) == 0) {
+				if (line[strlen(line) - 1] == '\n')
+					line[strlen(line) - 1] = '\0';
+				if (sscanf(line + strlen(hwaddr),
+					"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
+					&mac[0], &mac[1], &mac[2], &mac[3], &mac[4],
+					&mac[5]) != ETHER_ADDR_LEN) {
+					log_warn("interfaces", "unable to parse %s",
+					    line + strlen(hwaddr));
+					fclose(netbond);
+					return;
+				}
+				memcpy(iface->address, mac, ETHER_ADDR_LEN);
+				fclose(netbond);
+				return;
+			}
+			break;
+		}
+	}
+	log_warnx("interfaces", "unable to find real MAC address for enslaved %s",
+	    iface->name);
+	fclose(netbond);
+}
+
+/**
+ * Get permanent MAC.
+ */
+static void
+iflinux_get_permanent_mac(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_device *iface)
+{
+	struct interfaces_device *master = iface->upper;
+
+	if (master == NULL || master->type != IFACE_BOND_T) return;
+	if (iflinux_get_permanent_mac_ethtool(cfg, interfaces, iface) == -1 &&
+	    (master->driver == NULL || !strcmp(master->driver, "bonding")))
+		/* Fallback to old method for a bond */
+		iflinux_get_permanent_mac_bond(cfg, interfaces, iface);
+}
+
+#ifdef ENABLE_DOT3
+#  define ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32 (SCHAR_MAX)
+#  define ETHTOOL_DECLARE_LINK_MODE_MASK(name) \
+    uint32_t name[ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32]
+
+struct ethtool_link_usettings {
+	struct ethtool_link_settings base;
+	struct {
+		ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
+		ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
+		ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);
+	} link_modes;
+};
+
+static int
+iflinux_ethtool_link_mode_test_bit(unsigned int nr, const uint32_t *mask)
+{
+	if (nr >= 32 * ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32) return 0;
+	return !!(mask[nr / 32] & (1 << (nr % 32)));
+}
+static void
+iflinux_ethtool_link_mode_unset_bit(unsigned int nr, uint32_t *mask)
+{
+	if (nr >= 32 * ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32) return;
+	mask[nr / 32] &= ~(1 << (nr % 32));
+}
+static int
+iflinux_ethtool_link_mode_is_empty(const uint32_t *mask)
+{
+	for (unsigned int i = 0; i < ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32; ++i) {
+		if (mask[i] != 0) return 0;
+	}
+
+	return 1;
+}
+
+static int
+iflinux_ethtool_glink(struct lldpd *cfg, const char *ifname,
+    struct ethtool_link_usettings *uset)
+{
+	int rc;
+
+	/* Try with ETHTOOL_GLINKSETTINGS first */
+	struct {
+		struct ethtool_link_settings req;
+		uint32_t link_mode_data[3 * ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32];
+	} ecmd;
+	static int8_t nwords = 0;
+	struct ifreq ifr = {};
+	strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
+
+	if (nwords == 0) {
+		/* Do a handshake first. We assume that this is device-independant. */
+		memset(&ecmd, 0, sizeof(ecmd));
+		ecmd.req.cmd = ETHTOOL_GLINKSETTINGS;
+		ifr.ifr_data = (caddr_t)&ecmd;
+		rc = ioctl(cfg->g_sock, SIOCETHTOOL, &ifr);
+		if (rc == 0) {
+			nwords = -ecmd.req.link_mode_masks_nwords;
+			log_debug("interfaces", "glinksettings nwords is %" PRId8,
+			    nwords);
+		} else {
+			static int once = 0;
+			if (errno == EPERM && !once) {
+				log_warnx("interfaces",
+				    "cannot get ethtool link information "
+				    "with GLINKSETTINGS (requires 4.9+). "
+				    "25G+ speeds may be missing in MAC/PHY TLVs");
+				once = 1;
+			}
+			nwords = -1;
+		}
+	}
+	if (nwords > 0) {
+		memset(&ecmd, 0, sizeof(ecmd));
+		ecmd.req.cmd = ETHTOOL_GLINKSETTINGS;
+		ecmd.req.link_mode_masks_nwords = nwords;
+		ifr.ifr_data = (caddr_t)&ecmd;
+		rc = ioctl(cfg->g_sock, SIOCETHTOOL, &ifr);
+		if (rc == 0) {
+			log_debug("interfaces",
+			    "got ethtool results for %s with GLINKSETTINGS", ifname);
+			memcpy(&uset->base, &ecmd.req, sizeof(uset->base));
+			unsigned int u32_offs = 0;
+			memcpy(uset->link_modes.supported,
+			    &ecmd.link_mode_data[u32_offs],
+			    4 * ecmd.req.link_mode_masks_nwords);
+			u32_offs += ecmd.req.link_mode_masks_nwords;
+			memcpy(uset->link_modes.advertising,
+			    &ecmd.link_mode_data[u32_offs],
+			    4 * ecmd.req.link_mode_masks_nwords);
+			u32_offs += ecmd.req.link_mode_masks_nwords;
+			memcpy(uset->link_modes.lp_advertising,
+			    &ecmd.link_mode_data[u32_offs],
+			    4 * ecmd.req.link_mode_masks_nwords);
+			goto end;
+		}
+	}
+
+	/* Try with ETHTOOL_GSET */
+	struct ethtool_cmd ethc;
+	memset(&ethc, 0, sizeof(ethc));
+	ethc.cmd = ETHTOOL_GSET;
+	ifr.ifr_data = (caddr_t)&ethc;
+	rc = ioctl(cfg->g_sock, SIOCETHTOOL, &ifr);
+	if (rc == 0) {
+		/* Do a partial copy (only what we need) */
+		log_debug("interfaces", "got ethtool results for %s with GSET", ifname);
+		memset(uset, 0, sizeof(*uset));
+		uset->base.cmd = ETHTOOL_GSET;
+		uset->base.link_mode_masks_nwords = 1;
+		uset->link_modes.supported[0] = ethc.supported;
+		uset->link_modes.advertising[0] = ethc.advertising;
+		uset->link_modes.lp_advertising[0] = ethc.lp_advertising;
+		uset->base.speed = (ethc.speed_hi << 16) | ethc.speed;
+		uset->base.duplex = ethc.duplex;
+		uset->base.port = ethc.port;
+		uset->base.autoneg = ethc.autoneg;
+	} else {
+		static int once = 0;
+		if (errno == EPERM && !once) {
+			log_warnx("interfaces",
+			    "cannot get ethtool link information "
+			    "with GSET (requires 2.6.19+). "
+			    "MAC/PHY TLV will be unavailable");
+			once = 1;
+		}
+	}
+end:
+	return rc;
+}
+
+/* Fill up MAC/PHY for a given hardware port */
+static void
+iflinux_macphy(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+	struct ethtool_link_usettings uset = {};
+	struct lldpd_port *port = &hardware->h_lport;
+	int j;
+	int advertised_ethtool_to_rfc3636[][2] = {
+		{ ETHTOOL_LINK_MODE_10baseT_Half_BIT, LLDP_DOT3_LINK_AUTONEG_10BASE_T },
+		{ ETHTOOL_LINK_MODE_10baseT_Full_BIT,
+		    LLDP_DOT3_LINK_AUTONEG_10BASET_FD },
+		{ ETHTOOL_LINK_MODE_100baseT_Half_BIT,
+		    LLDP_DOT3_LINK_AUTONEG_100BASE_TX },
+		{ ETHTOOL_LINK_MODE_100baseT_Full_BIT,
+		    LLDP_DOT3_LINK_AUTONEG_100BASE_TXFD },
+		{ ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
+		    LLDP_DOT3_LINK_AUTONEG_1000BASE_T },
+		{ ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
+		    LLDP_DOT3_LINK_AUTONEG_1000BASE_TFD },
+		{ ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
+		    LLDP_DOT3_LINK_AUTONEG_1000BASE_XFD },
+		{ ETHTOOL_LINK_MODE_Pause_BIT, LLDP_DOT3_LINK_AUTONEG_FDX_PAUSE },
+		{ ETHTOOL_LINK_MODE_Asym_Pause_BIT, LLDP_DOT3_LINK_AUTONEG_FDX_APAUSE },
+		{ -1, 0 }
+	};
+
+	log_debug("interfaces", "ask ethtool for the appropriate MAC/PHY for %s",
+	    hardware->h_ifname);
+	if (iflinux_ethtool_glink(cfg, hardware->h_ifname, &uset) == 0) {
+		port->p_macphy.autoneg_support =
+		    iflinux_ethtool_link_mode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
+			uset.link_modes.supported);
+		port->p_macphy.autoneg_enabled =
+		    (uset.base.autoneg == AUTONEG_DISABLE) ? 0 : 1;
+		for (j = 0; advertised_ethtool_to_rfc3636[j][0] >= 0; j++) {
+			if (iflinux_ethtool_link_mode_test_bit(
+				advertised_ethtool_to_rfc3636[j][0],
+				uset.link_modes.advertising)) {
+				port->p_macphy.autoneg_advertised |=
+				    advertised_ethtool_to_rfc3636[j][1];
+				iflinux_ethtool_link_mode_unset_bit(
+				    advertised_ethtool_to_rfc3636[j][0],
+				    uset.link_modes.advertising);
+			}
+		}
+		iflinux_ethtool_link_mode_unset_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
+		    uset.link_modes.advertising);
+		iflinux_ethtool_link_mode_unset_bit(ETHTOOL_LINK_MODE_TP_BIT,
+		    uset.link_modes.advertising);
+		iflinux_ethtool_link_mode_unset_bit(ETHTOOL_LINK_MODE_AUI_BIT,
+		    uset.link_modes.advertising);
+		iflinux_ethtool_link_mode_unset_bit(ETHTOOL_LINK_MODE_MII_BIT,
+		    uset.link_modes.advertising);
+		iflinux_ethtool_link_mode_unset_bit(ETHTOOL_LINK_MODE_FIBRE_BIT,
+		    uset.link_modes.advertising);
+		iflinux_ethtool_link_mode_unset_bit(ETHTOOL_LINK_MODE_BNC_BIT,
+		    uset.link_modes.advertising);
+		iflinux_ethtool_link_mode_unset_bit(ETHTOOL_LINK_MODE_Pause_BIT,
+		    uset.link_modes.advertising);
+		iflinux_ethtool_link_mode_unset_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+		    uset.link_modes.advertising);
+		iflinux_ethtool_link_mode_unset_bit(ETHTOOL_LINK_MODE_Backplane_BIT,
+		    uset.link_modes.advertising);
+		if (!iflinux_ethtool_link_mode_is_empty(uset.link_modes.advertising)) {
+			port->p_macphy.autoneg_advertised |=
+			    LLDP_DOT3_LINK_AUTONEG_OTHER;
+		}
+		switch (uset.base.speed) {
+		case SPEED_10:
+			port->p_macphy.mau_type = (uset.base.duplex == DUPLEX_FULL) ?
+			    LLDP_DOT3_MAU_10BASETFD :
+			    LLDP_DOT3_MAU_10BASETHD;
+			if (uset.base.port == PORT_BNC)
+				port->p_macphy.mau_type = LLDP_DOT3_MAU_10BASE2;
+			if (uset.base.port == PORT_FIBRE)
+				port->p_macphy.mau_type =
+				    (uset.base.duplex == DUPLEX_FULL) ?
+				    LLDP_DOT3_MAU_10BASEFLFD :
+				    LLDP_DOT3_MAU_10BASEFLHD;
+			break;
+		case SPEED_100:
+			port->p_macphy.mau_type = (uset.base.duplex == DUPLEX_FULL) ?
+			    LLDP_DOT3_MAU_100BASETXFD :
+			    LLDP_DOT3_MAU_100BASETXHD;
+			if (uset.base.port == PORT_BNC)
+				port->p_macphy.mau_type =
+				    (uset.base.duplex == DUPLEX_FULL) ?
+				    LLDP_DOT3_MAU_100BASET2FD :
+				    LLDP_DOT3_MAU_100BASET2HD;
+			if (uset.base.port == PORT_FIBRE)
+				port->p_macphy.mau_type =
+				    (uset.base.duplex == DUPLEX_FULL) ?
+				    LLDP_DOT3_MAU_100BASEFXFD :
+				    LLDP_DOT3_MAU_100BASEFXHD;
+			break;
+		case SPEED_1000:
+			port->p_macphy.mau_type = (uset.base.duplex == DUPLEX_FULL) ?
+			    LLDP_DOT3_MAU_1000BASETFD :
+			    LLDP_DOT3_MAU_1000BASETHD;
+			if (uset.base.port == PORT_FIBRE)
+				port->p_macphy.mau_type =
+				    (uset.base.duplex == DUPLEX_FULL) ?
+				    LLDP_DOT3_MAU_1000BASEXFD :
+				    LLDP_DOT3_MAU_1000BASEXHD;
+			break;
+		case SPEED_2500:
+			port->p_macphy.mau_type = LLDP_DOT3_MAU_2P5GIGT;
+			break;
+		case SPEED_5000:
+			port->p_macphy.mau_type = LLDP_DOT3_MAU_5GIGT;
+			break;
+		case SPEED_10000:
+			// Distinguish between RJ45 BaseT, DAC BaseCX4, or Fibre BaseLR
+			if (uset.base.port == PORT_TP) {
+				port->p_macphy.mau_type = LLDP_DOT3_MAU_10GBASET;
+			} else if (uset.base.port == PORT_FIBRE) {
+				port->p_macphy.mau_type = LLDP_DOT3_MAU_10GIGBASELR;
+			} else if (uset.base.port == PORT_DA) {
+				port->p_macphy.mau_type = LLDP_DOT3_MAU_10GIGBASECX4;
+			}
+			break;
+		case SPEED_25000:
+			// Distinguish between RJ45 BaseT, DAC BaseCR, or Fibre BaseLR
+			if (uset.base.port == PORT_TP) {
+				port->p_macphy.mau_type = LLDP_DOT3_MAU_25GBASET;
+			} else if (uset.base.port == PORT_FIBRE) {
+				port->p_macphy.mau_type = LLDP_DOT3_MAU_25GBASELR;
+			} else if (uset.base.port == PORT_DA) {
+				port->p_macphy.mau_type = LLDP_DOT3_MAU_25GBASECR;
+			}
+			break;
+		case SPEED_40000:
+			// Same kind of approximation.
+			port->p_macphy.mau_type = (uset.base.port == PORT_FIBRE) ?
+			    LLDP_DOT3_MAU_40GBASELR4 :
+			    LLDP_DOT3_MAU_40GBASECR4;
+			break;
+		case SPEED_50000:
+			// Same kind of approximation.
+			port->p_macphy.mau_type = (uset.base.port == PORT_FIBRE) ?
+			    LLDP_DOT3_MAU_50GBASELR :
+			    LLDP_DOT3_MAU_50GBASECR;
+			break;
+		case SPEED_100000:
+			// Ditto
+			port->p_macphy.mau_type = (uset.base.port == PORT_FIBRE) ?
+			    LLDP_DOT3_MAU_100GBASELR4 :
+			    LLDP_DOT3_MAU_100GBASECR4;
+			break;
+		}
+		if (uset.base.port == PORT_AUI)
+			port->p_macphy.mau_type = LLDP_DOT3_MAU_AUI;
+	}
+}
+#else  /* ENABLE_DOT3 */
+static void
+iflinux_macphy(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+}
+#endif /* ENABLE_DOT3 */
+
+#ifdef ENABLE_OLDIES
+struct bond_master {
+	char name[IFNAMSIZ];
+	int index;
+};
+
+static int
+iface_bond_init(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+	struct bond_master *master = hardware->h_data;
+	int fd;
+	int un = 1;
+
+	if (!master) return -1;
+
+	log_debug("interfaces", "initialize enslaved device %s", hardware->h_ifname);
+
+	/* First, we get a socket to the raw physical interface */
+	if ((fd = priv_iface_init(hardware->h_ifindex, hardware->h_ifname)) == -1)
+		return -1;
+	hardware->h_sendfd = fd;
+	interfaces_setup_multicast(cfg, hardware->h_ifname, 0);
+
+	/* Then, we open a raw interface for the master */
+	log_debug("interfaces", "enslaved device %s has master %s(%d)",
+	    hardware->h_ifname, master->name, master->index);
+	if ((fd = priv_iface_init(master->index, master->name)) == -1) {
+		close(hardware->h_sendfd);
+		return -1;
+	}
+	/* With bonding and older kernels (< 2.6.27) we need to listen
+	 * to bond device. We use setsockopt() PACKET_ORIGDEV to get
+	 * physical device instead of bond device (works with >=
+	 * 2.6.24). */
+	if (setsockopt(fd, SOL_PACKET, PACKET_ORIGDEV, &un, sizeof(un)) == -1) {
+		log_info("interfaces",
+		    "unable to setsockopt for master bonding device of %s. "
+		    "You will get inaccurate results",
+		    hardware->h_ifname);
+	}
+	interfaces_setup_multicast(cfg, master->name, 0);
+
+	levent_hardware_add_fd(hardware, hardware->h_sendfd);
+	levent_hardware_add_fd(hardware, fd);
+	log_debug("interfaces", "interface %s initialized (fd=%d,master=%s[%d])",
+	    hardware->h_ifname, hardware->h_sendfd, master->name, fd);
+	return 0;
+}
+
+static int
+iface_bond_recv(struct lldpd *cfg, struct lldpd_hardware *hardware, int fd,
+    char *buffer, size_t size)
+{
+	int n;
+	struct sockaddr_ll from;
+	struct bond_master *master = hardware->h_data;
+
+	log_debug("interfaces", "receive PDU from enslaved device %s",
+	    hardware->h_ifname);
+	if ((n = iflinux_generic_recv(hardware, fd, buffer, size, &from)) == -1)
+		return -1;
+	if (fd == hardware->h_sendfd) /* We received this on the physical interface. */
+		return n;
+	/* We received this on the bonding interface. Is it really for us? */
+	if (from.sll_ifindex == hardware->h_ifindex) /* This is for us */
+		return n;
+	if (from.sll_ifindex == master->index)
+		/* We don't know from which physical interface it comes (kernel
+		 * < 2.6.24). In doubt, this is for us. */
+		return n;
+	return -1; /* Not for us */
+}
+
+static int
+iface_bond_close(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+	struct bond_master *master = hardware->h_data;
+	log_debug("interfaces", "closing enslaved device %s", hardware->h_ifname);
+	interfaces_setup_multicast(cfg, hardware->h_ifname, 1);
+	interfaces_setup_multicast(cfg, master->name, 1);
+	free(hardware->h_data);
+	hardware->h_data = NULL;
+	return 0;
+}
+
+struct lldpd_ops bond_ops = {
+	.send = iflinux_eth_send,
+	.recv = iface_bond_recv,
+	.cleanup = iface_bond_close,
+};
+
+static void
+iflinux_handle_bond(struct lldpd *cfg, struct interfaces_device_list *interfaces)
+{
+	struct interfaces_device *iface;
+	struct interfaces_device *master;
+	struct lldpd_hardware *hardware;
+	struct bond_master *bmaster;
+	int created;
+	TAILQ_FOREACH (iface, interfaces, next) {
+		if (!(iface->type & IFACE_PHYSICAL_T)) continue;
+		if (iface->ignore) continue;
+		if (!iface->upper || !(iface->upper->type & IFACE_BOND_T)) continue;
+
+		master = iface->upper;
+		log_debug("interfaces",
+		    "%s is an acceptable enslaved device (master=%s)", iface->name,
+		    master->name);
+		created = 0;
+		if ((hardware = lldpd_get_hardware(cfg, iface->name, iface->index)) ==
+		    NULL) {
+			if ((hardware = lldpd_alloc_hardware(cfg, iface->name,
+				 iface->index)) == NULL) {
+				log_warnx("interfaces",
+				    "Unable to allocate space for %s", iface->name);
+				continue;
+			}
+			created = 1;
+		}
+		if (hardware->h_flags) continue;
+		if (hardware->h_ops != &bond_ops || hardware->h_ifindex_changed) {
+			if (!created) {
+				log_debug("interfaces",
+				    "bond %s is converted from another type of interface",
+				    hardware->h_ifname);
+				if (hardware->h_ops && hardware->h_ops->cleanup)
+					hardware->h_ops->cleanup(cfg, hardware);
+				levent_hardware_release(hardware);
+				levent_hardware_init(hardware);
+			}
+			bmaster = hardware->h_data =
+			    calloc(1, sizeof(struct bond_master));
+			if (!bmaster) {
+				log_warn("interfaces", "not enough memory");
+				lldpd_hardware_cleanup(cfg, hardware);
+				continue;
+			}
+		} else
+			bmaster = hardware->h_data;
+		bmaster->index = master->index;
+		strlcpy(bmaster->name, master->name, IFNAMSIZ);
+		if (hardware->h_ops != &bond_ops || hardware->h_ifindex_changed) {
+			if (iface_bond_init(cfg, hardware) != 0) {
+				log_warn("interfaces", "unable to initialize %s",
+				    hardware->h_ifname);
+				lldpd_hardware_cleanup(cfg, hardware);
+				continue;
+			}
+			hardware->h_ops = &bond_ops;
+			hardware->h_mangle = 1;
+		}
+		if (created)
+			interfaces_helper_add_hardware(cfg, hardware);
+		else
+			lldpd_port_cleanup(&hardware->h_lport, 0);
+
+		hardware->h_flags = iface->flags;
+		iface->ignore = 1;
+
+		/* Get local address */
+		memcpy(&hardware->h_lladdr, iface->address, ETHER_ADDR_LEN);
+
+		/* Fill information about port */
+		interfaces_helper_port_name_desc(cfg, hardware, iface);
+
+		/* Fill additional info */
+#  ifdef ENABLE_DOT3
+		hardware->h_lport.p_aggregid = master->index;
+#  endif
+		hardware->h_mtu = iface->mtu ? iface->mtu : 1500;
+	}
+}
+#endif
+
+/* Query each interface to get the appropriate driver */
+static void
+iflinux_add_driver(struct lldpd *cfg, struct interfaces_device_list *interfaces)
+{
+	struct interfaces_device *iface;
+	TAILQ_FOREACH (iface, interfaces, next) {
+		struct ethtool_drvinfo ethc = { .cmd = ETHTOOL_GDRVINFO };
+		struct ifreq ifr = { .ifr_data = (caddr_t)&ethc };
+		if (iface->driver) continue;
+
+		strlcpy(ifr.ifr_name, iface->name, IFNAMSIZ);
+		if (ioctl(cfg->g_sock, SIOCETHTOOL, &ifr) == 0) {
+			iface->driver = strdup(ethc.driver);
+			log_debug("interfaces", "driver for %s is `%s`", iface->name,
+			    iface->driver);
+		}
+	}
+}
+
+/* Query each interface to see if it is a wireless one */
+static void
+iflinux_add_wireless(struct lldpd *cfg, struct interfaces_device_list *interfaces)
+{
+	struct interfaces_device *iface;
+	TAILQ_FOREACH (iface, interfaces, next) {
+		struct iwreq iwr = {};
+		strlcpy(iwr.ifr_name, iface->name, IFNAMSIZ);
+		if (ioctl(cfg->g_sock, SIOCGIWNAME, &iwr) >= 0) {
+			log_debug("interfaces", "%s is wireless", iface->name);
+			iface->type |= IFACE_WIRELESS_T | IFACE_PHYSICAL_T;
+		}
+	}
+}
+
+/* Query each interface to see if it is a bridge */
+static void
+iflinux_add_bridge(struct lldpd *cfg, struct interfaces_device_list *interfaces)
+{
+	struct interfaces_device *iface;
+
+	TAILQ_FOREACH (iface, interfaces, next) {
+		if (iface->type &
+		    (IFACE_PHYSICAL_T | IFACE_VLAN_T | IFACE_BOND_T | IFACE_BRIDGE_T))
+			continue;
+		if (iflinux_is_bridge(cfg, interfaces, iface)) {
+			log_debug("interfaces", "interface %s is a bridge",
+			    iface->name);
+			iface->type |= IFACE_BRIDGE_T;
+		}
+	}
+}
+
+/* Query each interface to see if it is a bond */
+static void
+iflinux_add_bond(struct lldpd *cfg, struct interfaces_device_list *interfaces)
+{
+	struct interfaces_device *iface;
+
+	TAILQ_FOREACH (iface, interfaces, next) {
+		if (iface->type &
+		    (IFACE_PHYSICAL_T | IFACE_VLAN_T | IFACE_BOND_T | IFACE_BRIDGE_T))
+			continue;
+		if (iflinux_is_bond(cfg, interfaces, iface)) {
+			log_debug("interfaces", "interface %s is a bond", iface->name);
+			iface->type |= IFACE_BOND_T;
+		}
+	}
+}
+
+/* Query each interface to see if it is a vlan */
+static void
+iflinux_add_vlan(struct lldpd *cfg, struct interfaces_device_list *interfaces)
+{
+	struct interfaces_device *iface;
+
+	TAILQ_FOREACH (iface, interfaces, next) {
+		if (iface->type &
+		    (IFACE_PHYSICAL_T | IFACE_VLAN_T | IFACE_BOND_T | IFACE_BRIDGE_T))
+			continue;
+		if (iflinux_is_vlan(cfg, interfaces, iface)) {
+			log_debug("interfaces", "interface %s is a VLAN", iface->name);
+			iface->type |= IFACE_VLAN_T;
+		}
+	}
+}
+
+static void
+iflinux_add_physical(struct lldpd *cfg, struct interfaces_device_list *interfaces)
+{
+	struct interfaces_device *iface;
+	/* Deny some drivers */
+	const char *const *rif;
+	const char *const denied_drivers[] = { "cdc_mbim", "vxlan", NULL };
+
+	TAILQ_FOREACH (iface, interfaces, next) {
+		if (iface->type & (IFACE_VLAN_T | IFACE_BOND_T | IFACE_BRIDGE_T))
+			continue;
+
+		iface->type &= ~IFACE_PHYSICAL_T;
+
+		/* We request that the interface is able to do either multicast
+		 * or broadcast to be able to send discovery frames. */
+		if (!(iface->flags & (IFF_MULTICAST | IFF_BROADCAST))) {
+			log_debug("interfaces",
+			    "skip %s: not able to do multicast nor broadcast",
+			    iface->name);
+			continue;
+		}
+
+		/* Check if the driver is not denied */
+		if (iface->driver) {
+			int skip = 0;
+			for (rif = denied_drivers; *rif; rif++) {
+				if (strcmp(iface->driver, *rif) == 0) {
+					log_debug("interfaces",
+					    "skip %s: denied driver", iface->name);
+					skip = 1;
+					break;
+				}
+			}
+			if (skip) continue;
+		}
+
+		/* If the interface is linked to another one, skip it too. */
+		if (iface->lower &&
+		    (!iface->driver ||
+			(strcmp(iface->driver, "veth") &&
+			    strcmp(iface->driver, "dsa")))) {
+			log_debug("interfaces",
+			    "skip %s: there is a lower interface (%s)", iface->name,
+			    iface->lower->name);
+			continue;
+		}
+
+		/* Get the real MAC address (for example, if the interface is enslaved)
+		 */
+		iflinux_get_permanent_mac(cfg, interfaces, iface);
+
+		log_debug("interfaces", "%s is a physical interface", iface->name);
+		iface->type |= IFACE_PHYSICAL_T;
+	}
+}
+
+void
+interfaces_update(struct lldpd *cfg)
+{
+	struct lldpd_hardware *hardware;
+	struct interfaces_device_list *interfaces;
+	struct interfaces_address_list *addresses;
+	interfaces = netlink_get_interfaces(cfg);
+	addresses = netlink_get_addresses(cfg);
+	if (interfaces == NULL || addresses == NULL) {
+		log_warnx("interfaces", "cannot update the list of local interfaces");
+		return;
+	}
+
+	/* Add missing bits to list of interfaces */
+	iflinux_add_driver(cfg, interfaces);
+	if (LOCAL_CHASSIS(cfg)->c_cap_available & LLDP_CAP_WLAN)
+		iflinux_add_wireless(cfg, interfaces);
+	if (LOCAL_CHASSIS(cfg)->c_cap_available & LLDP_CAP_BRIDGE)
+		iflinux_add_bridge(cfg, interfaces);
+	iflinux_add_bond(cfg, interfaces);
+	iflinux_add_vlan(cfg, interfaces);
+	iflinux_add_physical(cfg, interfaces);
+
+	interfaces_helper_allowlist(cfg, interfaces);
+#ifdef ENABLE_OLDIES
+	iflinux_handle_bond(cfg, interfaces);
+#endif
+	interfaces_helper_physical(cfg, interfaces, &eth_ops, iflinux_eth_init);
+#ifdef ENABLE_DOT1
+	interfaces_helper_vlan(cfg, interfaces);
+#endif
+	interfaces_helper_mgmt(cfg, addresses, interfaces);
+	interfaces_helper_chassis(cfg, interfaces);
+
+	/* Mac/PHY */
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+		if (!hardware->h_flags) continue;
+		iflinux_macphy(cfg, hardware);
+		interfaces_helper_promisc(cfg, hardware);
+	}
+}
+
+void
+interfaces_cleanup(struct lldpd *cfg)
+{
+	netlink_cleanup(cfg);
+}
diff --git a/src/daemon/interfaces-solaris.c b/src/daemon/interfaces-solaris.c
new file mode 100644
index 0000000..5e3ae3c
--- /dev/null
+++ b/src/daemon/interfaces-solaris.c
@@ -0,0 +1,174 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2013 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#include <unistd.h>
+#include <sys/sockio.h>
+#include <net/if_types.h>
+
+/* Solaris comes with libdladm which seems to be handy to get all the necessary
+ * information. Unfortunately, this library needs a special device file and a
+ * Unix socket to a daemon. This is a bit difficult to use it in a
+ * privilege-separated daemon. Therefore, we keep using ioctl(). This should
+ * also improve compatibility with older versions of Solaris.
+ */
+
+static void
+ifsolaris_extract(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_address_list *addresses, struct lifreq *lifr)
+{
+	int flags = 0;
+	int index = 0;
+	struct interfaces_address *address = NULL;
+	struct interfaces_device *device = NULL;
+
+	sa_family_t lifr_af = lifr->lifr_addr.ss_family;
+	struct lifreq lifrl = { .lifr_name = {} };
+	strlcpy(lifrl.lifr_name, lifr->lifr_name, sizeof(lifrl.lifr_name));
+
+	/* Flags */
+	if (ioctl(cfg->g_sock, SIOCGLIFFLAGS, (caddr_t)&lifrl) < 0) {
+		log_warn("interfaces", "unable to get flags for %s", lifrl.lifr_name);
+		return;
+	}
+	flags = lifrl.lifr_flags;
+
+	/* Index */
+	if (ioctl(cfg->g_sock, SIOCGLIFINDEX, (caddr_t)&lifrl) < 0) {
+		log_warn("interfaces", "unable to get index for %s", lifrl.lifr_name);
+		return;
+	}
+	index = lifrl.lifr_index;
+
+	/* Record the address */
+	if ((address = malloc(sizeof(struct interfaces_address))) == NULL) {
+		log_warn("interfaces", "not enough memory for a new IP address on %s",
+		    lifrl.lifr_name);
+		return;
+	}
+	address->flags = flags;
+	address->index = index;
+	memcpy(&address->address, &lifr->lifr_addr,
+	    (lifr_af == AF_INET) ? sizeof(struct sockaddr_in) :
+				   sizeof(struct sockaddr_in6));
+	TAILQ_INSERT_TAIL(addresses, address, next);
+
+	/* Hardware address */
+	if (ioctl(cfg->g_sock, SIOCGLIFHWADDR, (caddr_t)&lifrl) < 0) {
+		log_debug("interfaces", "unable to get hardware address for %s",
+		    lifrl.lifr_name);
+		return;
+	}
+	struct sockaddr_dl *saddrdl = (struct sockaddr_dl *)&lifrl.lifr_addr;
+	if (saddrdl->sdl_type != 4) {
+		log_debug("interfaces", "skip %s: not an ethernet device (%d)",
+		    lifrl.lifr_name, saddrdl->sdl_type);
+		return;
+	}
+
+	/* Handle the interface */
+	if ((device = calloc(1, sizeof(struct interfaces_device))) == NULL) {
+		log_warn("interfaces", "unable to allocate memory for %s",
+		    lifrl.lifr_name);
+		return;
+	}
+
+	device->name = strdup(lifrl.lifr_name);
+	device->flags = flags;
+	device->index = index;
+	device->type = IFACE_PHYSICAL_T;
+	device->address = malloc(ETHER_ADDR_LEN);
+	if (device->address) memcpy(device->address, LLADDR(saddrdl), ETHER_ADDR_LEN);
+
+	/* MTU */
+	if (ioctl(cfg->g_sock, SIOCGLIFMTU, (caddr_t)&lifrl) < 0) {
+		log_debug("interfaces", "unable to get MTU for %s", lifrl.lifr_name);
+	} else
+		device->mtu = lifrl.lifr_mtu;
+
+	TAILQ_INSERT_TAIL(interfaces, device, next);
+}
+
+extern struct lldpd_ops bpf_ops;
+void
+interfaces_update(struct lldpd *cfg)
+{
+	struct lldpd_hardware *hardware;
+	caddr_t buffer = NULL;
+	struct interfaces_device_list *interfaces;
+	struct interfaces_address_list *addresses;
+	interfaces = malloc(sizeof(struct interfaces_device_list));
+	addresses = malloc(sizeof(struct interfaces_address_list));
+	if (interfaces == NULL || addresses == NULL) {
+		log_warnx("interfaces", "unable to allocate memory");
+		goto end;
+	}
+	TAILQ_INIT(interfaces);
+	TAILQ_INIT(addresses);
+
+	struct lifnum lifn = { .lifn_family = AF_UNSPEC, .lifn_flags = LIFC_ENABLED };
+	if (ioctl(cfg->g_sock, SIOCGLIFNUM, &lifn) < 0) {
+		log_warn("interfaces", "unable to get the number of interfaces");
+		goto end;
+	}
+
+	size_t bufsize = lifn.lifn_count * sizeof(struct lifreq);
+	if ((buffer = malloc(bufsize)) == NULL) {
+		log_warn("interfaces", "unable to allocate buffer to get interfaces");
+		goto end;
+	}
+
+	struct lifconf lifc = { .lifc_family = AF_UNSPEC,
+		.lifc_flags = LIFC_ENABLED,
+		.lifc_len = bufsize,
+		.lifc_buf = buffer };
+	if (ioctl(cfg->g_sock, SIOCGLIFCONF, (char *)&lifc) < 0) {
+		log_warn("interfaces", "unable to get the network interfaces");
+		goto end;
+	}
+
+	int num = lifc.lifc_len / sizeof(struct lifreq);
+	if (num > lifn.lifn_count) num = lifn.lifn_count;
+	log_debug("interfaces", "got %d interfaces", num);
+
+	struct lifreq *lifrp = (struct lifreq *)buffer;
+	for (int n = 0; n < num; n++, lifrp++)
+		ifsolaris_extract(cfg, interfaces, addresses, lifrp);
+
+	interfaces_helper_allowlist(cfg, interfaces);
+	interfaces_helper_physical(cfg, interfaces, &bpf_ops, ifbpf_phys_init);
+	interfaces_helper_mgmt(cfg, addresses, interfaces);
+	interfaces_helper_chassis(cfg, interfaces);
+
+	/* Mac/PHY */
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+		if (!hardware->h_flags) continue;
+		/* TODO: mac/phy for Solaris */
+		interfaces_helper_promisc(cfg, hardware);
+	}
+
+end:
+	free(buffer);
+	interfaces_free_devices(interfaces);
+	interfaces_free_addresses(addresses);
+}
+
+void
+interfaces_cleanup(struct lldpd *cfg)
+{
+}
diff --git a/src/daemon/interfaces.c b/src/daemon/interfaces.c
new file mode 100644
index 0000000..c1179d9
--- /dev/null
+++ b/src/daemon/interfaces.c
@@ -0,0 +1,764 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+#include "trace.h"
+
+#include <stddef.h>
+#include <unistd.h>
+#include <errno.h>
+#include <assert.h>
+#include <arpa/inet.h>
+
+static int
+lldpd_af(int af)
+{
+	switch (af) {
+	case LLDPD_AF_IPV4:
+		return AF_INET;
+	case LLDPD_AF_IPV6:
+		return AF_INET6;
+	case LLDPD_AF_LAST:
+		return AF_MAX;
+	default:
+		return AF_UNSPEC;
+	}
+}
+
+/* Generic ethernet interface initialization */
+/**
+ * Enable multicast on the given interface.
+ */
+void
+interfaces_setup_multicast(struct lldpd *cfg, const char *name, int remove)
+{
+	int rc;
+	size_t i, j;
+	const u_int8_t *mac;
+	const u_int8_t zero[ETHER_ADDR_LEN] = {};
+
+	for (i = 0; cfg->g_protocols[i].mode != 0; i++) {
+		if (!cfg->g_protocols[i].enabled) continue;
+		for (j = 0; j < sizeof(cfg->g_protocols[0].mac) /
+			 sizeof(cfg->g_protocols[0].mac[0]);
+		     j++) {
+			mac = cfg->g_protocols[i].mac[j];
+			if (memcmp(mac, zero, ETHER_ADDR_LEN) == 0) break;
+			if ((rc = priv_iface_multicast(name, mac, !remove)) != 0) {
+				errno = rc;
+				if (errno != ENOENT)
+					log_debug("interfaces",
+					    "unable to %s %s address to multicast filter for %s (%s)",
+					    (remove) ? "delete" : "add",
+					    cfg->g_protocols[i].name, name,
+					    strerror(rc));
+			}
+		}
+	}
+}
+
+/**
+ * Free an interface.
+ *
+ * @param iff interface to be freed
+ */
+void
+interfaces_free_device(struct interfaces_device *iff)
+{
+	if (!iff) return;
+	free(iff->name);
+	free(iff->alias);
+	free(iff->address);
+	free(iff->driver);
+	free(iff);
+}
+
+/**
+ * Free a list of interfaces.
+ *
+ * @param ifs list of interfaces to be freed
+ */
+void
+interfaces_free_devices(struct interfaces_device_list *ifs)
+{
+	struct interfaces_device *iff, *iff_next;
+	if (!ifs) return;
+	for (iff = TAILQ_FIRST(ifs); iff != NULL; iff = iff_next) {
+		iff_next = TAILQ_NEXT(iff, next);
+		interfaces_free_device(iff);
+	}
+	free(ifs);
+}
+
+/**
+ * Free one address
+ *
+ * @param ifaddr Address to be freed
+ */
+void
+interfaces_free_address(struct interfaces_address *ifaddr)
+{
+	free(ifaddr);
+}
+
+/**
+ * Free a list of addresses.
+ *
+ * @param ifaddrs list of addresses
+ */
+void
+interfaces_free_addresses(struct interfaces_address_list *ifaddrs)
+{
+	struct interfaces_address *ifa, *ifa_next;
+	if (!ifaddrs) return;
+	for (ifa = TAILQ_FIRST(ifaddrs); ifa != NULL; ifa = ifa_next) {
+		ifa_next = TAILQ_NEXT(ifa, next);
+		interfaces_free_address(ifa);
+	}
+	free(ifaddrs);
+}
+
+/**
+ * Find the appropriate interface from the name.
+ *
+ * @param interfaces List of available interfaces
+ * @param device     Name of the device we search for
+ * @return The interface or NULL if not found
+ */
+struct interfaces_device *
+interfaces_nametointerface(struct interfaces_device_list *interfaces,
+    const char *device)
+{
+	struct interfaces_device *iface;
+	TAILQ_FOREACH (iface, interfaces, next) {
+		if (!strncmp(iface->name, device, IFNAMSIZ)) return iface;
+	}
+	log_debug("interfaces", "cannot get interface for index %s", device);
+	return NULL;
+}
+
+/**
+ * Find the appropriate interface from the index.
+ *
+ * @param interfaces List of available interfaces
+ * @param index      Index of the device we search for
+ * @return The interface or NULL if not found
+ */
+struct interfaces_device *
+interfaces_indextointerface(struct interfaces_device_list *interfaces, int index)
+{
+	struct interfaces_device *iface;
+	TAILQ_FOREACH (iface, interfaces, next) {
+		if (iface->index == index) return iface;
+	}
+	log_debug("interfaces", "cannot get interface for index %d", index);
+	return NULL;
+}
+
+void
+interfaces_helper_allowlist(struct lldpd *cfg,
+    struct interfaces_device_list *interfaces)
+{
+	struct interfaces_device *iface;
+
+	if (!cfg->g_config.c_iface_pattern) return;
+
+	TAILQ_FOREACH (iface, interfaces, next) {
+		int m = pattern_match(iface->name, cfg->g_config.c_iface_pattern, 0);
+		switch (m) {
+		case PATTERN_MATCH_DENIED:
+			log_debug("interfaces", "deny %s", iface->name);
+			iface->ignore = 1;
+			continue;
+		case PATTERN_MATCH_ALLOWED_EXACT:
+			log_debug("interfaces",
+			    "allow %s (consider it as a physical interface)",
+			    iface->name);
+			iface->type |= IFACE_PHYSICAL_T;
+			continue;
+		}
+	}
+}
+
+#ifdef ENABLE_DOT1
+static void
+iface_append_vlan(struct lldpd *cfg, struct interfaces_device *vlan,
+    struct interfaces_device *lower)
+{
+	struct lldpd_hardware *hardware =
+	    lldpd_get_hardware(cfg, lower->name, lower->index);
+	struct lldpd_port *port;
+	struct lldpd_vlan *v;
+	char *name = NULL;
+	uint16_t vlan_id;
+
+	if (hardware == NULL) {
+		log_debug("interfaces", "cannot find real interface %s for VLAN %s",
+		    lower->name, vlan->name);
+		return;
+	}
+	port = &hardware->h_lport;
+
+	for (int i = 0; (i < VLAN_BITMAP_LEN); i++) {
+		if (vlan->vlan_bmap[i] == 0) continue;
+		for (unsigned bit = 0; bit < 32; bit++) {
+			uint32_t mask = 1L << bit;
+			if (!(vlan->vlan_bmap[i] & mask)) continue;
+			vlan_id = (i * 32) + bit;
+			if (asprintf(&name, "vlan%d", vlan_id) == -1) return;
+
+			/* Check if the VLAN is already here. */
+			TAILQ_FOREACH (v, &port->p_vlans, v_entries)
+				if (strncmp(name, v->v_name, IFNAMSIZ) == 0) {
+					free(name);
+					return;
+				}
+
+			if ((v = (struct lldpd_vlan *)calloc(1,
+				 sizeof(struct lldpd_vlan))) == NULL) {
+				free(name);
+				return;
+			}
+			v->v_name = name;
+			v->v_vid = vlan_id;
+			if (vlan->pvid) port->p_pvid = vlan->pvid;
+			log_debug("interfaces", "append VLAN %s for %s", v->v_name,
+			    hardware->h_ifname);
+			TAILQ_INSERT_TAIL(&port->p_vlans, v, v_entries);
+		}
+	}
+}
+
+/**
+ * Append VLAN to the lowest possible interface.
+ *
+ * @param vlan  The VLAN interface (used to get VLAN ID).
+ * @param upper The upper interface we are currently examining.
+ * @param depth Depth of the stack (avoid infinite recursion)
+ *
+ * Initially, upper == vlan. This function will be called recursively.
+ */
+static void
+iface_append_vlan_to_lower(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct interfaces_device *vlan, struct interfaces_device *upper, int depth)
+{
+	if (depth > 5) {
+		log_warnx("interfaces",
+		    "BUG: maximum depth reached when applying VLAN %s (loop?)",
+		    vlan->name);
+		return;
+	}
+	depth++;
+	struct interfaces_device *lower;
+	log_debug("interfaces",
+	    "looking to apply VLAN %s to physical interface behind %s", vlan->name,
+	    upper->name);
+
+	/* Some bridges managed VLAN internally, skip them. */
+	if (upper->type & IFACE_BRIDGE_VLAN_T) {
+		log_debug("interfaces",
+		    "VLAN %s ignored for VLAN-aware bridge interface %s", vlan->name,
+		    upper->name);
+		return;
+	}
+
+	/* Easy: check if we have a lower interface. */
+	if (upper->lower) {
+		log_debug("interfaces", "VLAN %s on lower interface %s", vlan->name,
+		    upper->name);
+		iface_append_vlan_to_lower(cfg, interfaces, vlan, upper->lower, depth);
+		return;
+	}
+
+	/* Other easy case, we have a physical interface. */
+	if (upper->type & IFACE_PHYSICAL_T) {
+		log_debug("interfaces", "VLAN %s on physical interface %s", vlan->name,
+		    upper->name);
+		iface_append_vlan(cfg, vlan, upper);
+		return;
+	}
+
+	/* We can now search for interfaces that have our interface as an upper
+	 * interface. */
+	TAILQ_FOREACH (lower, interfaces, next) {
+		if (lower->upper != upper) continue;
+		log_debug("interfaces", "VLAN %s on lower interface %s", vlan->name,
+		    upper->name);
+		iface_append_vlan_to_lower(cfg, interfaces, vlan, lower, depth);
+	}
+}
+
+void
+interfaces_helper_vlan(struct lldpd *cfg, struct interfaces_device_list *interfaces)
+{
+	struct interfaces_device *iface;
+
+	TAILQ_FOREACH (iface, interfaces, next) {
+		if (!(iface->type & IFACE_VLAN_T) && bitmap_isempty(iface->vlan_bmap))
+			continue;
+
+		/* We need to find the physical interfaces of this
+		   vlan, through bonds and bridges. */
+		log_debug("interfaces",
+		    "search physical interface for VLAN interface %s", iface->name);
+		iface_append_vlan_to_lower(cfg, interfaces, iface, iface, 0);
+	}
+}
+#endif
+
+/* Fill out chassis ID if not already done. Only physical interfaces are
+ * considered. */
+void
+interfaces_helper_chassis(struct lldpd *cfg, struct interfaces_device_list *interfaces)
+{
+	struct interfaces_device *iface;
+	struct lldpd_hardware *hardware;
+	char *name = NULL;
+	static u_int8_t zero_mac[] = { 0, 0, 0, 0, 0, 0 };
+
+	if (!cfg->g_config.c_cap_override) {
+		LOCAL_CHASSIS(cfg)->c_cap_enabled &=
+		    ~(LLDP_CAP_BRIDGE | LLDP_CAP_WLAN | LLDP_CAP_STATION);
+		TAILQ_FOREACH (iface, interfaces, next) {
+			if (iface->type & IFACE_BRIDGE_T)
+				LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_BRIDGE;
+			if (iface->type & IFACE_WIRELESS_T)
+				LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_WLAN;
+		}
+		if ((LOCAL_CHASSIS(cfg)->c_cap_available & LLDP_CAP_STATION) &&
+		    (LOCAL_CHASSIS(cfg)->c_cap_enabled == 0))
+			LOCAL_CHASSIS(cfg)->c_cap_enabled = LLDP_CAP_STATION;
+	}
+
+	/* Do not modify the chassis if it's already set to a MAC address or if
+	 * it's set to a local address equal to the user-provided
+	 * configuration. */
+	if ((LOCAL_CHASSIS(cfg)->c_id != NULL &&
+		LOCAL_CHASSIS(cfg)->c_id_subtype == LLDP_CHASSISID_SUBTYPE_LLADDR) ||
+	    cfg->g_config.c_cid_string != NULL)
+		return; /* We already have one */
+
+	TAILQ_FOREACH (iface, interfaces, next) {
+		if (!(iface->type & IFACE_PHYSICAL_T)) continue;
+		if (cfg->g_config.c_cid_pattern &&
+		    !pattern_match(iface->name, cfg->g_config.c_cid_pattern, 0))
+			continue;
+
+		if ((hardware = lldpd_get_hardware(cfg, iface->name, iface->index)) ==
+		    NULL)
+			/* That's odd. Let's skip. */
+			continue;
+		if (memcmp(hardware->h_lladdr, zero_mac, ETHER_ADDR_LEN) == 0)
+			/* All-zero MAC address */
+			continue;
+
+		name = malloc(ETHER_ADDR_LEN);
+		if (!name) {
+			log_warn("interfaces", "not enough memory for chassis ID");
+			return;
+		}
+		free(LOCAL_CHASSIS(cfg)->c_id);
+		memcpy(name, hardware->h_lladdr, ETHER_ADDR_LEN);
+		LOCAL_CHASSIS(cfg)->c_id = name;
+		LOCAL_CHASSIS(cfg)->c_id_len = ETHER_ADDR_LEN;
+		LOCAL_CHASSIS(cfg)->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LLADDR;
+		return;
+	}
+}
+
+#undef IN_IS_ADDR_LOOPBACK
+#define IN_IS_ADDR_LOOPBACK(a) ((a)->s_addr == htonl(INADDR_LOOPBACK))
+#undef IN_IS_ADDR_ANY
+#define IN_IS_ADDR_ANY(a) ((a)->s_addr == htonl(INADDR_ANY))
+#undef IN_IS_ADDR_LINKLOCAL
+#define IN_IS_ADDR_LINKLOCAL(a) (((a)->s_addr & htonl(0xffff0000)) == htonl(0xa9fe0000))
+#undef IN_IS_ADDR_GLOBAL
+#define IN_IS_ADDR_GLOBAL(a) \
+  (!IN_IS_ADDR_LOOPBACK(a) && !IN_IS_ADDR_ANY(a) && !IN_IS_ADDR_LINKLOCAL(a))
+#undef IN6_IS_ADDR_GLOBAL
+#define IN6_IS_ADDR_GLOBAL(a) (!IN6_IS_ADDR_LOOPBACK(a) && !IN6_IS_ADDR_LINKLOCAL(a))
+
+/* Add management addresses for the given family. We only take one of each
+   address family, unless a pattern is provided and is not all negative. For
+   example !*:*,!10.* will only deny addresses. We will pick the first IPv4
+   address not matching 10.*.
+*/
+static int
+interfaces_helper_mgmt_for_af(struct lldpd *cfg, int af,
+    struct interfaces_address_list *addrs, struct interfaces_device_list *interfaces,
+    int global, int allnegative)
+{
+	struct interfaces_address *addr;
+	struct interfaces_device *device;
+	struct lldpd_mgmt *mgmt;
+	char addrstrbuf[INET6_ADDRSTRLEN];
+	int found = 0;
+	union lldpd_address in_addr;
+	size_t in_addr_size;
+
+	TAILQ_FOREACH (addr, addrs, next) {
+		if (addr->address.ss_family != lldpd_af(af)) continue;
+
+		switch (af) {
+		case LLDPD_AF_IPV4:
+			in_addr_size = sizeof(struct in_addr);
+			memcpy(&in_addr,
+			    &((struct sockaddr_in *)&addr->address)->sin_addr,
+			    in_addr_size);
+			if (global) {
+				if (!IN_IS_ADDR_GLOBAL(&in_addr.inet)) continue;
+			} else {
+				if (!IN_IS_ADDR_LINKLOCAL(&in_addr.inet)) continue;
+			}
+			break;
+		case LLDPD_AF_IPV6:
+			in_addr_size = sizeof(struct in6_addr);
+			memcpy(&in_addr,
+			    &((struct sockaddr_in6 *)&addr->address)->sin6_addr,
+			    in_addr_size);
+			if (global) {
+				if (!IN6_IS_ADDR_GLOBAL(&in_addr.inet6)) continue;
+			} else {
+				if (!IN6_IS_ADDR_LINKLOCAL(&in_addr.inet6)) continue;
+			}
+			break;
+		default:
+			assert(0);
+			continue;
+		}
+		if (inet_ntop(lldpd_af(af), &in_addr, addrstrbuf, sizeof(addrstrbuf)) ==
+		    NULL) {
+			log_warn("interfaces",
+			    "unable to convert IP address to a string");
+			continue;
+		}
+		if (cfg->g_config.c_mgmt_pattern == NULL ||
+		    /* Match on IP address */
+		    pattern_match(addrstrbuf, cfg->g_config.c_mgmt_pattern,
+			allnegative) ||
+		    /* Match on interface name */
+		    ((device = interfaces_indextointerface(interfaces, addr->index)) &&
+			pattern_match(device->name, cfg->g_config.c_mgmt_pattern,
+			    allnegative))) {
+			mgmt =
+			    lldpd_alloc_mgmt(af, &in_addr, in_addr_size, addr->index);
+			if (mgmt == NULL) {
+				assert(errno == ENOMEM); /* anything else is a bug */
+				log_warn("interfaces", "out of memory error");
+				return found;
+			}
+			log_debug("interfaces", "add management address %s",
+			    addrstrbuf);
+			TAILQ_INSERT_TAIL(&LOCAL_CHASSIS(cfg)->c_mgmt, mgmt, m_entries);
+			found = 1;
+
+			/* Don't take additional address if the pattern is all negative.
+			 */
+			if (allnegative) break;
+		}
+	}
+	return found;
+}
+
+/* Find a management address in all available interfaces, even those that were
+   already handled. This is a special interface handler because it does not
+   really handle interface related information (management address is attached
+   to the local chassis). */
+void
+interfaces_helper_mgmt(struct lldpd *cfg, struct interfaces_address_list *addrs,
+    struct interfaces_device_list *interfaces)
+{
+	int allnegative = 0;
+	int af;
+	const char *pattern = cfg->g_config.c_mgmt_pattern;
+
+	lldpd_chassis_mgmt_cleanup(LOCAL_CHASSIS(cfg));
+	if (!cfg->g_config.c_mgmt_advertise) return;
+
+	/* Is the pattern provided an actual IP address? */
+	if (pattern && strpbrk(pattern, "!,*?") == NULL) {
+		unsigned char addr[sizeof(struct in6_addr)];
+		size_t addr_size;
+		struct lldpd_mgmt *mgmt;
+		struct interfaces_address *ifaddr;
+
+		for (af = LLDPD_AF_UNSPEC + 1; af != LLDPD_AF_LAST; af++) {
+			switch (af) {
+			case LLDPD_AF_IPV4:
+				addr_size = sizeof(struct in_addr);
+				break;
+			case LLDPD_AF_IPV6:
+				addr_size = sizeof(struct in6_addr);
+				break;
+			default:
+				assert(0);
+			}
+			if (inet_pton(lldpd_af(af), pattern, addr) == 1) break;
+		}
+		if (af != LLDPD_AF_LAST) {
+			/* Try to get the index if possible. */
+			TAILQ_FOREACH (ifaddr, addrs, next) {
+				if (ifaddr->address.ss_family != lldpd_af(af)) continue;
+				if (LLDPD_AF_IPV4 == af) {
+					struct sockaddr_in *sa_sin;
+					sa_sin = (struct sockaddr_in *)&ifaddr->address;
+					if (0 ==
+					    memcmp(addr, &(sa_sin->sin_addr),
+						addr_size))
+						break;
+				} else if (LLDPD_AF_IPV6 == af) {
+					if (0 ==
+					    memcmp(addr,
+						&((struct sockaddr_in6 *)&ifaddr
+							->address)
+						     ->sin6_addr,
+						addr_size))
+						break;
+				}
+			}
+
+			mgmt = lldpd_alloc_mgmt(af, addr, addr_size,
+			    ifaddr ? ifaddr->index : 0);
+			if (mgmt == NULL) {
+				log_warn("interfaces", "out of memory error");
+				return;
+			}
+			log_debug("interfaces", "add exact management address %s",
+			    pattern);
+			TAILQ_INSERT_TAIL(&LOCAL_CHASSIS(cfg)->c_mgmt, mgmt, m_entries);
+			return;
+		}
+		/* else: could be an interface name */
+	}
+
+	/* Is the pattern provided all negative? */
+	if (pattern == NULL)
+		allnegative = 1;
+	else if (pattern[0] == '!') {
+		/* If each comma is followed by '!', its an all
+		   negative pattern */
+		const char *sep = pattern;
+		while ((sep = strchr(sep, ',')) && (*(++sep) == '!'))
+			;
+		if (sep == NULL) allnegative = 1;
+	}
+
+	/* Find management addresses */
+	for (af = LLDPD_AF_UNSPEC + 1; af != LLDPD_AF_LAST; af++) {
+		(void)(interfaces_helper_mgmt_for_af(cfg, af, addrs, interfaces, 1,
+			   allnegative) ||
+		    interfaces_helper_mgmt_for_af(cfg, af, addrs, interfaces, 0,
+			allnegative));
+	}
+}
+
+/* Fill up port name and description */
+void
+interfaces_helper_port_name_desc(struct lldpd *cfg, struct lldpd_hardware *hardware,
+    struct interfaces_device *iface)
+{
+	struct lldpd_port *port = &hardware->h_lport;
+
+	/* We need to set the portid to what the client configured.
+	   This can be done from the CLI.
+	*/
+	int has_alias = (iface->alias != NULL && strlen(iface->alias) != 0 &&
+	    strncmp("lldpd: ", iface->alias, 7));
+	int portid_type = cfg->g_config.c_lldp_portid_type;
+	if (portid_type == LLDP_PORTID_SUBTYPE_IFNAME ||
+	    (portid_type == LLDP_PORTID_SUBTYPE_UNKNOWN && has_alias) ||
+	    (port->p_id_subtype == LLDP_PORTID_SUBTYPE_LOCAL && has_alias)) {
+		if (port->p_id_subtype != LLDP_PORTID_SUBTYPE_LOCAL) {
+			log_debug("interfaces", "use ifname for %s",
+			    hardware->h_ifname);
+			port->p_id_subtype = LLDP_PORTID_SUBTYPE_IFNAME;
+			port->p_id_len = strlen(hardware->h_ifname);
+			free(port->p_id);
+			if ((port->p_id = calloc(1, port->p_id_len)) == NULL)
+				fatal("interfaces", NULL);
+			memcpy(port->p_id, hardware->h_ifname, port->p_id_len);
+		}
+
+		if (port->p_descr_force == 0) {
+			/* use the actual alias in the port description */
+			log_debug("interfaces", "using alias in description for %s",
+			    hardware->h_ifname);
+			free(port->p_descr);
+			if (has_alias) {
+				port->p_descr = strdup(iface->alias);
+			} else {
+				/* We don't have anything else to put here and for CDP
+				 * with need something non-NULL */
+				port->p_descr = strdup(hardware->h_ifname);
+			}
+		}
+	} else {
+		if (port->p_id_subtype != LLDP_PORTID_SUBTYPE_LOCAL) {
+			log_debug("interfaces", "use MAC address for %s",
+			    hardware->h_ifname);
+			port->p_id_subtype = LLDP_PORTID_SUBTYPE_LLADDR;
+			free(port->p_id);
+			if ((port->p_id = calloc(1, ETHER_ADDR_LEN)) == NULL)
+				fatal("interfaces", NULL);
+			memcpy(port->p_id, hardware->h_lladdr, ETHER_ADDR_LEN);
+			port->p_id_len = ETHER_ADDR_LEN;
+		}
+
+		if (port->p_descr_force == 0) {
+			/* use the ifname in the port description until alias is set */
+			log_debug("interfaces", "using ifname in description for %s",
+			    hardware->h_ifname);
+			free(port->p_descr);
+			port->p_descr = strdup(hardware->h_ifname);
+		}
+	}
+}
+
+void
+interfaces_helper_add_hardware(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+	TRACE(LLDPD_INTERFACES_NEW(hardware->h_ifname));
+	TAILQ_INSERT_TAIL(&cfg->g_hardware, hardware, h_entries);
+}
+
+void
+interfaces_helper_physical(struct lldpd *cfg, struct interfaces_device_list *interfaces,
+    struct lldpd_ops *ops, int (*init)(struct lldpd *, struct lldpd_hardware *))
+{
+	struct interfaces_device *iface;
+	struct lldpd_hardware *hardware;
+	int created;
+
+	TAILQ_FOREACH (iface, interfaces, next) {
+		if (!(iface->type & IFACE_PHYSICAL_T)) continue;
+		if (iface->ignore) continue;
+
+		log_debug("interfaces", "%s is an acceptable ethernet device",
+		    iface->name);
+		created = 0;
+		if ((hardware = lldpd_get_hardware(cfg, iface->name, iface->index)) ==
+		    NULL) {
+			if ((hardware = lldpd_alloc_hardware(cfg, iface->name,
+				 iface->index)) == NULL) {
+				log_warnx("interfaces",
+				    "Unable to allocate space for %s", iface->name);
+				continue;
+			}
+			created = 1;
+		}
+		if (hardware->h_flags) continue;
+		if (hardware->h_ops != ops || hardware->h_ifindex_changed) {
+			if (!created) {
+				log_debug("interfaces",
+				    "interface %s is converted from another type of interface",
+				    hardware->h_ifname);
+				if (hardware->h_ops && hardware->h_ops->cleanup) {
+					hardware->h_ops->cleanup(cfg, hardware);
+					levent_hardware_release(hardware);
+					levent_hardware_init(hardware);
+				}
+			}
+			if (init(cfg, hardware) != 0) {
+				log_warnx("interfaces", "unable to initialize %s",
+				    hardware->h_ifname);
+				lldpd_hardware_cleanup(cfg, hardware);
+				continue;
+			}
+			hardware->h_ops = ops;
+			hardware->h_mangle =
+			    (iface->upper && iface->upper->type & IFACE_BOND_T);
+		}
+		if (created)
+			interfaces_helper_add_hardware(cfg, hardware);
+		else
+			lldpd_port_cleanup(&hardware->h_lport, 0);
+
+		hardware->h_flags = iface->flags; /* Should be non-zero */
+		iface->ignore = 1;		  /* Future handlers
+						     don't have to
+						     care about this
+						     interface. */
+
+		/* Get local address */
+		memcpy(&hardware->h_lladdr, iface->address, ETHER_ADDR_LEN);
+
+		/* Fill information about port */
+		interfaces_helper_port_name_desc(cfg, hardware, iface);
+
+		/* Fill additional info */
+		hardware->h_mtu = iface->mtu ? iface->mtu : 1500;
+
+#ifdef ENABLE_DOT3
+		if (iface->upper && iface->upper->type & IFACE_BOND_T)
+			hardware->h_lport.p_aggregid = iface->upper->index;
+		else
+			hardware->h_lport.p_aggregid = 0;
+#endif
+	}
+}
+
+void
+interfaces_helper_promisc(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+	if (!cfg->g_config.c_promisc) return;
+	if (priv_iface_promisc(hardware->h_ifname) != 0) {
+		log_warnx("interfaces", "unable to enable promiscuous mode for %s",
+		    hardware->h_ifname);
+	}
+}
+
+/**
+ * Send the packet using the hardware function. Optionnaly mangle the MAC address.
+ *
+ * With bonds, we have duplicate MAC address on different physical
+ * interfaces. We need to alter the source MAC address when we send on an
+ * inactive slave. The `h_mangle` flah is used to know if we need to do
+ * something like that.
+ */
+int
+interfaces_send_helper(struct lldpd *cfg, struct lldpd_hardware *hardware, char *buffer,
+    size_t size)
+{
+	if (size < 2 * ETHER_ADDR_LEN) {
+		log_warnx("interfaces", "packet to send on %s is too small!",
+		    hardware->h_ifname);
+		return 0;
+	}
+	if (hardware->h_mangle) {
+#define MAC_UL_ADMINISTERED_BIT_MASK 0x02
+		char *src_mac = buffer + ETHER_ADDR_LEN;
+		char arbitrary[] = { 0x00, 0x60, 0x08, 0x69, 0x97, 0xef };
+
+		switch (cfg->g_config.c_bond_slave_src_mac_type) {
+		case LLDP_BOND_SLAVE_SRC_MAC_TYPE_LOCALLY_ADMINISTERED:
+			if (!(*src_mac & MAC_UL_ADMINISTERED_BIT_MASK)) {
+				*src_mac |= MAC_UL_ADMINISTERED_BIT_MASK;
+				break;
+			}
+			/* Fallback to fixed value */
+			memcpy(src_mac, arbitrary, ETHER_ADDR_LEN);
+			break;
+		case LLDP_BOND_SLAVE_SRC_MAC_TYPE_FIXED:
+			memcpy(src_mac, arbitrary, ETHER_ADDR_LEN);
+			break;
+		case LLDP_BOND_SLAVE_SRC_MAC_TYPE_ZERO:
+			memset(src_mac, 0, ETHER_ADDR_LEN);
+			break;
+		}
+	}
+	return hardware->h_ops->send(cfg, hardware, buffer, size);
+}
diff --git a/src/daemon/lldp-tlv.h b/src/daemon/lldp-tlv.h
new file mode 100644
index 0000000..a9bf7cf
--- /dev/null
+++ b/src/daemon/lldp-tlv.h
@@ -0,0 +1,83 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _LLDP_TLV_H
+#define _LLDP_TLV_H
+
+#define LLDP_ADDR_NEAREST_BRIDGE       \
+  {                                    \
+    0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e \
+  }
+#define LLDP_ADDR_NEAREST_NONTPMR_BRIDGE \
+  {                                      \
+    0x01, 0x80, 0xc2, 0x00, 0x00, 0x03   \
+  }
+#define LLDP_ADDR_NEAREST_CUSTOMER_BRIDGE \
+  {                                       \
+    0x01, 0x80, 0xc2, 0x00, 0x00, 0x00    \
+  }
+
+#define LLDP_TLV_END 0
+#define LLDP_TLV_CHASSIS_ID 1
+#define LLDP_TLV_PORT_ID 2
+#define LLDP_TLV_TTL 3
+#define LLDP_TLV_PORT_DESCR 4
+#define LLDP_TLV_SYSTEM_NAME 5
+#define LLDP_TLV_SYSTEM_DESCR 6
+#define LLDP_TLV_SYSTEM_CAP 7
+#define LLDP_TLV_MGMT_ADDR 8
+
+#define LLDP_TLV_ORG_DOT1 \
+  {                       \
+    0x00, 0x80, 0xc2      \
+  }
+#define LLDP_TLV_ORG_DOT3 \
+  {                       \
+    0x00, 0x12, 0x0f      \
+  }
+#define LLDP_TLV_ORG_MED \
+  {                      \
+    0x00, 0x12, 0xbb     \
+  }
+#define LLDP_TLV_ORG_DCBX \
+  {                       \
+    0x00, 0x1b, 0x21      \
+  }
+
+#define LLDP_TLV_DOT1_PVID 1
+#define LLDP_TLV_DOT1_PPVID 2
+#define LLDP_TLV_DOT1_VLANNAME 3
+#define LLDP_TLV_DOT1_PI 4
+
+#define LLDP_TLV_DOT3_MAC 1
+#define LLDP_TLV_DOT3_POWER 2
+#define LLDP_TLV_DOT3_LA 3
+#define LLDP_TLV_DOT3_MFS 4
+
+#define LLDP_TLV_MED_CAP 1
+#define LLDP_TLV_MED_POLICY 2
+#define LLDP_TLV_MED_LOCATION 3
+#define LLDP_TLV_MED_MDI 4
+#define LLDP_TLV_MED_IV_HW 5
+#define LLDP_TLV_MED_IV_FW 6
+#define LLDP_TLV_MED_IV_SW 7
+#define LLDP_TLV_MED_IV_SN 8
+#define LLDP_TLV_MED_IV_MANUF 9
+#define LLDP_TLV_MED_IV_MODEL 10
+#define LLDP_TLV_MED_IV_ASSET 11
+
+#endif
diff --git a/src/daemon/lldpd.8.in b/src/daemon/lldpd.8.in
new file mode 100644
index 0000000..32d57a6
--- /dev/null
+++ b/src/daemon/lldpd.8.in
@@ -0,0 +1,424 @@
+.\" Copyright (c) 2006 Pierre-Yves Ritschard <pyr@openbsd.org>
+.\" Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+.\"
+.\" Permission to use, copy, modify, and/or distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd $Mdocdate: August 21 2008 $
+.Dt LLDPD 8
+.Os
+.Sh NAME
+.Nm lldpd
+.Nd LLDP daemon
+.Sh SYNOPSIS
+.Nm
+.Op Fl dxcseiklrv
+.Op Fl D Ar debug
+.Op Fl p Ar pidfile
+.Op Fl S Ar description
+.Op Fl P Ar platform
+.Op Fl X Ar socket
+.Op Fl m Ar management
+.Op Fl u Ar file
+.Op Fl I Ar interfaces
+.Op Fl C Ar interfaces
+.Op Fl M Ar class
+.Op Fl H Ar hide
+.Op Fl L Ar lldpcli
+.Op Fl O Ar configfile
+.Sh DESCRIPTION
+.Nm
+is a daemon able to receive and send
+.Em LLDP
+frames. The Link Layer Discovery Protocol is a vendor-neutral Layer 2
+protocol that allows a network device to advertise its identity and
+capabilities on the local network.
+.Pp
+.Nm
+also implements an SNMP subagent using AgentX protocol to interface to
+a regular SNMP agent like Net-SNMP. To enable this subagent, you need
+something like that in your
+.Xr snmpd.conf 5 :
+.Bd -literal -offset indent
+master agentx
+.Ed
+.Pp
+This daemon implements both reception and sending. It will collect
+various information to send LLDP frames to all Ethernet interfaces,
+including management address, speed and VLAN names.
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl d
+Do not daemonize.
+If this option is specified,
+.Nm
+will run in the foreground. When specified one more time,
+.Nm
+will not log to syslog but only to stderr. Then, this option can be
+specified many times to increase verbosity. When specified four times,
+debug logs will be enabled. They can be filtered with
+.Fl D
+flag.
+.It Fl D Ar debug
+This option allows the user to filter out debugging information by
+specifying allowed tokens. This option can be repeated several times
+to allow several tokens. This option must be combined with the
+.Fl d
+flag to have some effect. Only debugging logs can be filtered. Here is
+a list of allowed tokens with their description:
+.Bl -tag -width "XXXXXXXXXX" -offset "XXXX" -compact
+.It Sy main
+Main daemon.
+.It Sy interfaces
+Discovery of local interfaces.
+.It Sy lldp
+LLDP PDU encoding/decoding.
+.It Sy edp
+EDP PDU encoding/decoding.
+.It Sy cdp
+CDP/FDP PDU encoding/decoding.
+.It Sy sonmp
+SONMP PDU encoding/decoding.
+.It Sy event
+Events management.
+.It Sy libevent
+Events management but for logs generated by libevent.
+.It Sy privsep
+Privilege separation.
+.It Sy localchassis
+Retrieval of information related to the local chassis.
+.It Sy rpc
+Client communication.
+.It Sy control
+Management of the Unix control socket.
+.It Sy snmp
+SNMP subagent.
+.It Sy libsnmp
+SNMP subagent but for logs generated by NetSNMP.
+.It Sy decode
+Generic PDU decoding.
+.It Sy marshal
+Low-level serialization mechanisms.
+.It Sy alloc
+Low-level allocation mechanisms.
+.It Sy send
+Sending PDU to some interface.
+.It Sy receive
+Receiving PDU from some interface.
+.It Sy loop
+Main loop.
+.It Sy smartfilter
+Smart filtering of different protocols on the same port.
+.It Sy netlink
+Netlink subsystem.
+.El
+.It Fl p Ar pidfile
+Use the provided PID file to record
+.Nm
+PID instead of @LLDPD_PID_FILE@.
+.It Fl k
+Disable advertising of kernel release, version and machine. Kernel name
+(ie: Linux) will still be shared, and Inventory software version will be set
+to 'Unknown'.
+.It Fl S Ar description
+Override system description with the provided description. The default
+description is the kernel name, the node name, the kernel version, the
+build date and the architecture (except if you use the
+.Fl k
+flag described above).
+.It Fl P Ar platform
+Override the CDP platform name with the provided value. The default
+description is the kernel name (Linux).
+.It Fl x
+Enable SNMP subagent.
+With this option,
+.Nm
+will enable an SNMP subagent using AgentX protocol. This allows you to
+get information about local system and remote systems through SNMP.
+.It Fl X Ar socket
+Enable SNMP subagent using the specified socket.
+.Nm
+will enable an SNMP subagent using AgentX protocol for the given
+socket. This option implies the previous one. The default socket is
+usually
+.Em /var/agentx/master .
+You can specify a socket like
+.Em tcp:127.0.0.1:705
+for example. Since the process that will open this socket is enclosed
+in a chroot, you need to specify an IP address (not a hostname) when
+using a TCP or UDP socket.
+.It Fl c
+Enable the support of CDP protocol to deal with Cisco routers that do
+not speak LLDP. If repeated, CDPv1 packets will be sent even when
+there is no CDP peer detected. If repeated once again, CDPv2 packets
+will be sent even when there is no CDP peer detected. If repeated once
+again (i.e.
+.Fl cccc ) ,
+CDPv1 will be disabled and CDPv2 will be enabled. If repeated once
+again (i.e.
+.Fl ccccc ) ,
+CDPv1 will be disabled and CDPv2 will be forced.
+.It Fl f
+Enable the support of FDP protocol to deal with Foundry routers that do
+not speak LLDP. If repeated, FDP packets will be sent even when there
+is no FDP peer detected.
+.It Fl s
+Enable the support of SONMP protocol to deal with Nortel routers and
+switches that do not speak LLDP. If repeated, SONMP packets will be
+sent even when there is no SONMP peer detected.
+.It Fl e
+Enable the support of EDP protocol to deal with Extreme routers and
+switches that do not speak LLDP. If repeated, EDP packets will be sent
+even when there is no EDP peer detected.
+.It Fl l
+Force to send LLDP packets even when there is no LLDP peer detected
+but there is a peer speaking another protocol detected. By default,
+LLDP packets are sent when there is a peer speaking LLDP detected or
+when there is no peer at all. If repeated, LLDP is disabled.
+.It Fl r
+Receive-only mode. With this switch,
+.Nm
+will not send any frame. It will only listen to neighbors.
+.It Fl m Ar management
+Specify the management addresses of this system. As for interfaces
+(described below), this option can use wildcards and inversions.
+Without this option, the first IPv4 and the first IPv6 are used. If an
+exact IP address is provided, it is used as a management address
+without any check. If only negative patterns are provided, only one
+IPv4 and one IPv6 addresses are chosen. Otherwise, many of them can be
+selected. If you want to remove IPv6 addresses, you can use
+.Em !*:* .
+If an interface name is matched, the first IPv4 address and the first
+IPv6 address associated to this interface will be chosen.
+.It Fl u Ar file
+Specify the Unix-domain socket used for communication with
+.Xr lldpctl 8 .
+.It Fl I Ar interfaces
+Specify which interface to listen and send LLDPDU to. Without this
+option,
+.Nm
+will use all available physical interfaces. This option can use
+wildcards. Several interfaces can be specified separated by commas.
+It is also possible to remove an interface by prefixing it with an
+exclamation mark. It is possible to allow an interface by
+prefixing it with two exclamation marks. An allowed interface beats
+a forbidden interface which beats a simple matched interface. For
+example, with
+.Em eth*,!eth1,!eth2
+.Nm
+will only use interfaces starting by
+.Em eth
+with the exception of
+.Em eth1
+and
+.Em eth2 .
+While with
+.Em *,!eth*,!!eth1
+.Nm
+will use all interfaces, except interfaces starting by
+.Em eth
+with the exception of
+.Em eth1 .
+When an exact match is found, it will circumvent some tests. For example, if
+.Em eth0.12
+is specified, it will be accepted even if this is a VLAN interface.
+.It Fl C Ar interfaces
+Specify which interfaces to use for computing chassis ID. Without this
+option, all interfaces are considered.
+.Nm
+will take the first MAC address from all the considered interfaces
+to compute the chassis ID. The logic of this option is the same as for
+.Fl I
+flag: you can exclude interfaces with an exclamation mark and use
+globbing to specify several interfaces. If all interfaces are
+removed (with
+.Em !* ) ,
+the system name is used as a chassis ID instead.
+.It Fl M Ar class
+Enable emission of LLDP-MED frame. Depending on the selected class,
+the standard defines which set of TLV should be transmitted. See
+section 10.2.1. Some devices may be strict about this aspect. The
+class should be one of the following value:
+.Bl -tag -width "0:XX" -compact
+.It Sy 1
+Generic Endpoint (Class I)
+.It Sy 2
+Media Endpoint (Class II). In this case, the standard requires to
+define at least one network policy through
+.Nm lldpcli .
+.It Sy 3
+Communication Device Endpoints (Class III). In this case, the standard
+requires to define at least one network policy through
+.Nm lldpcli .
+.It Sy 4
+Network Connectivity Device
+.El
+.It Fl i
+Disable LLDP-MED inventory TLV transmission.
+.Nm
+will still receive (and publish using SNMP if enabled) those LLDP-MED
+TLV but will not send them. Use this option if you don't want to
+transmit sensible information like serial numbers.
+.It Fl H Ar hide
+Filter neighbors. See section
+.Sx FILTERING NEIGHBORS
+for details.
+.It Fl L Ar lldpcli
+Provide an alternative path to
+.Nm lldpcli
+for configuration. If empty, does not use
+.Nm lldpcli
+for configuration.
+.It Fl O Ar configfile
+Override default configuration locations processed by
+.Nm lldpcli
+at start. If a directory is provided, each file contained in it will be read if ending by
+.Sy .conf.
+Order is alphabetical.
+.It Fl v
+Show
+.Nm
+version. When repeated, show more build information.
+.El
+.Sh FILTERING NEIGHBORS
+In a heterogeneous network, you may see several different hosts on the
+same port, even if there is only one physically plugged to this
+port. For example, if you have a Nortel switch running LLDP which is
+plugged to a Cisco switch running CDP and your host is plugged to the
+Cisco switch, you will see the Nortel switch as well because LLDP
+frames are forwarded by the Cisco switch. This may not be what you
+want. The
+.Fl H Ar hide
+parameter will allow you to tell
+.Nm
+to discard some frames that it receives and to avoid to send some
+other frames.
+.Pp
+Incoming filtering and outgoing filtering are
+unrelated. Incoming filtering will hide some remote ports to get you a
+chance to know exactly what equipment is on the other side of the
+network cable. Outgoing filtering will avoid to use some protocols to
+avoid flooding your network with a protocol that is not handled by the
+nearest equipment. Keep in mind that even without filtering,
+.Nm
+will speak protocols for which at least one frame has been received
+and LLDP otherwise (there are other options to change this behaviour,
+for example
+.Fl cc , ss , ee , ll
+and
+.Fl ff
+).
+.Pp
+When enabling incoming filtering,
+.Nm
+will try to select one protocol and filter out neighbors using other
+protocols. To select this protocol, the rule is to take the less used
+protocol. If on one port, you get 12 CDP neighbors and 1 LLDP
+neighbor, this mean that the remote switch speaks LLDP and does not
+filter CDP. Therefore, we select LLDP. When enabling outgoing
+filtering,
+.Nm
+will also try to select one protocol and only speaks this
+protocol. The filtering is done per port. Each port may select a
+different protocol.
+.Pp
+There are two additional criteria when enabling filtering: allowing
+one or several protocols to be selected (in case of a tie) and
+allowing one or several neighbors to be selected. Even when allowing
+several protocols, the rule of selecting the protocols with the less
+neighbors still apply. If
+.Nm
+selects LLDP and CDP, this means they have the same number of
+neighbors. The selection of the neighbor is random. Incoming filtering
+will select a set of neighbors to be displayed while outgoing
+filtering will use the selected set of neighbors to decide which
+protocols to use: if a selected neighbor speaks LLDP and another one
+CDP,
+.Nm
+will speak both CDP and LLDP on this port.
+.Pp
+There are some corner cases. A typical example is a switch speaking
+two protocols (CDP and LLDP for example). You want to get the
+information from the best protocol but you want to speak both
+protocols because some tools use the CDP table and some other the LLDP
+table.
+.Pp
+The table below summarize all accepted values for the
+.Fl H Ar hide
+parameter. The default value is
+.Em 15
+which corresponds to the corner case described above. The
+.Em filter
+column means that filtering is enabled. The
+.Em 1proto
+column tells that only one protocol will be kept. The
+.Em 1neigh
+column tells that only one neighbor will be kept.
+.Pp
+.Bl -column -compact -offset indent "HXXX" "filterX" "1protoX" "1neighX" "filterX" "1protoX" "1neighX"
+.It Ta Ta incoming Ta Ta outgoing Ta
+.It Ta Em filter Ta Em 1proto Ta Em 1neigh Ta Em filter Ta Em 1proto Ta Em 1neigh
+.It Em 0  Ta   Ta   Ta   Ta   Ta   Ta  
+.It Em 1  Ta x Ta x Ta   Ta x Ta x Ta  
+.It Em 2  Ta x Ta x Ta   Ta   Ta   Ta  
+.It Em 3  Ta   Ta   Ta   Ta x Ta x Ta  
+.It Em 4  Ta x Ta   Ta   Ta x Ta   Ta  
+.It Em 5  Ta x Ta   Ta   Ta   Ta   Ta  
+.It Em 6  Ta   Ta   Ta   Ta x Ta   Ta  
+.It Em 7  Ta x Ta x Ta x Ta x Ta x Ta  
+.It Em 8  Ta x Ta x Ta x Ta   Ta   Ta  
+.It Em 9  Ta x Ta   Ta x Ta x Ta x Ta  
+.It Em 10 Ta   Ta   Ta   Ta x Ta   Ta x
+.It Em 11 Ta x Ta   Ta x Ta   Ta   Ta  
+.It Em 12 Ta x Ta   Ta x Ta x Ta   Ta x
+.It Em 13 Ta x Ta   Ta x Ta x Ta   Ta  
+.It Em 14 Ta x Ta x Ta   Ta x Ta   Ta x
+.It Em 15 Ta x Ta x Ta   Ta x Ta   Ta  
+.It Em 16 Ta x Ta x Ta x Ta x Ta   Ta x
+.It Em 17 Ta x Ta x Ta x Ta x Ta   Ta  
+.It Em 18 Ta x Ta   Ta   Ta x Ta   Ta x
+.It Em 19 Ta x Ta   Ta   Ta x Ta x Ta  
+.El
+.Sh FILES
+.Bl -tag -width "@LLDPD_CTL_SOCKET@XX" -compact
+.It @LLDPD_CTL_SOCKET@
+Unix-domain socket used for communication with
+.Xr lldpctl 8 .
+.It @sysconfdir@/lldpd.conf
+Configuration file for
+.Nm .
+Commands in this files are executed by
+.Xr lldpcli 8
+at start.
+.It @sysconfdir@/lldpd.d
+Directory containing configuration files whose commands are executed
+by
+.Xr lldpcli 8
+at start.
+.El
+.Sh SEE ALSO
+.Xr lldpctl 8 ,
+.Xr lldpcli 8 ,
+.Xr snmpd 8
+.Sh HISTORY
+The
+.Nm
+program is inspired from a preliminary work of Reyk Floeter.
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+program was written by
+.An Pierre-Yves Ritschard Aq pyr@openbsd.org ,
+and
+.An Vincent Bernat Aq bernat@luffy.cx .
diff --git a/src/daemon/lldpd.c b/src/daemon/lldpd.c
new file mode 100644
index 0000000..4859fb8
--- /dev/null
+++ b/src/daemon/lldpd.c
@@ -0,0 +1,2020 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+#include "trace.h"
+
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <limits.h>
+#include <signal.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <time.h>
+#include <libgen.h>
+#include <assert.h>
+#include <sys/utsname.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/socket.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <arpa/inet.h>
+#include <netinet/if_ether.h>
+#include <pwd.h>
+#include <grp.h>
+
+#if HAVE_VFORK_H
+#  include <vfork.h>
+#endif
+#if HAVE_WORKING_FORK
+#  define vfork fork
+#endif
+
+static void usage(void);
+
+static struct protocol protos[] = {
+	{ LLDPD_MODE_LLDP, 1, "LLDP", 'l', lldp_send, lldp_decode, NULL,
+	    { LLDP_ADDR_NEAREST_BRIDGE, LLDP_ADDR_NEAREST_NONTPMR_BRIDGE,
+		LLDP_ADDR_NEAREST_CUSTOMER_BRIDGE } },
+#ifdef ENABLE_CDP
+	{ LLDPD_MODE_CDPV1, 0, "CDPv1", 'c', cdpv1_send, cdp_decode, cdpv1_guess,
+	    { CDP_MULTICAST_ADDR } },
+	{ LLDPD_MODE_CDPV2, 0, "CDPv2", 'c', cdpv2_send, cdp_decode, cdpv2_guess,
+	    { CDP_MULTICAST_ADDR } },
+#endif
+#ifdef ENABLE_SONMP
+	{ LLDPD_MODE_SONMP, 0, "SONMP", 's', sonmp_send, sonmp_decode, NULL,
+	    { SONMP_MULTICAST_ADDR } },
+#endif
+#ifdef ENABLE_EDP
+	{ LLDPD_MODE_EDP, 0, "EDP", 'e', edp_send, edp_decode, NULL,
+	    { EDP_MULTICAST_ADDR } },
+#endif
+#ifdef ENABLE_FDP
+	{ LLDPD_MODE_FDP, 0, "FDP", 'f', fdp_send, cdp_decode, NULL,
+	    { FDP_MULTICAST_ADDR } },
+#endif
+	{ 0, 0, "any", ' ', NULL, NULL, NULL, { { 0, 0, 0, 0, 0, 0 } } }
+};
+
+static char **saved_argv;
+#ifdef HAVE___PROGNAME
+extern const char *__progname;
+#else
+#  define __progname "lldpd"
+#endif
+
+static void
+usage(void)
+{
+	fprintf(stderr, "Usage:   %s [OPTIONS ...]\n", __progname);
+	fprintf(stderr, "Version: %s\n", PACKAGE_STRING);
+
+	fprintf(stderr, "\n");
+
+	fprintf(stderr, "-d       Do not daemonize.\n");
+	fprintf(stderr, "-r       Receive-only mode\n");
+	fprintf(stderr, "-i       Disable LLDP-MED inventory TLV transmission.\n");
+	fprintf(stderr,
+	    "-k       Disable advertising of kernel release, version, machine.\n");
+	fprintf(stderr, "-S descr Override the default system description.\n");
+	fprintf(stderr, "-P name  Override the default hardware platform.\n");
+	fprintf(stderr,
+	    "-m IP    Specify the IP management addresses of this system.\n");
+	fprintf(stderr,
+	    "-u file  Specify the Unix-domain socket used for communication with lldpctl(8).\n");
+	fprintf(stderr,
+	    "-H mode  Specify the behaviour when detecting multiple neighbors.\n");
+	fprintf(stderr, "-I iface Limit interfaces to use.\n");
+	fprintf(stderr, "-C iface Limit interfaces to use for computing chassis ID.\n");
+	fprintf(stderr, "-L path  Override path for lldpcli command.\n");
+	fprintf(stderr,
+	    "-O file  Override default configuration locations processed by lldpcli(8) at start.\n");
+#ifdef ENABLE_LLDPMED
+	fprintf(stderr,
+	    "-M class Enable emission of LLDP-MED frame. 'class' should be one of:\n");
+	fprintf(stderr, "             1 Generic Endpoint (Class I)\n");
+	fprintf(stderr, "             2 Media Endpoint (Class II)\n");
+	fprintf(stderr, "             3 Communication Device Endpoints (Class III)\n");
+	fprintf(stderr, "             4 Network Connectivity Device\n");
+#endif
+#ifdef USE_SNMP
+	fprintf(stderr, "-x       Enable SNMP subagent.\n");
+	fprintf(stderr, "-X sock  Specify the SNMP subagent socket.\n");
+#endif
+	fprintf(stderr, "\n");
+
+#if defined ENABLE_CDP || defined ENABLE_EDP || defined ENABLE_FDP || \
+    defined ENABLE_SONMP
+	fprintf(stderr, "Additional protocol support.\n");
+#  ifdef ENABLE_CDP
+	fprintf(stderr, "-c       Enable the support of CDP protocol. (Cisco)\n");
+#  endif
+#  ifdef ENABLE_EDP
+	fprintf(stderr, "-e       Enable the support of EDP protocol. (Extreme)\n");
+#  endif
+#  ifdef ENABLE_FDP
+	fprintf(stderr, "-f       Enable the support of FDP protocol. (Foundry)\n");
+#  endif
+#  ifdef ENABLE_SONMP
+	fprintf(stderr, "-s       Enable the support of SONMP protocol. (Nortel)\n");
+#  endif
+
+	fprintf(stderr, "\n");
+#endif
+
+	fprintf(stderr, "See manual page lldpd(8) for more information\n");
+	exit(1);
+}
+
+struct lldpd_hardware *
+lldpd_get_hardware(struct lldpd *cfg, char *name, int index)
+{
+	struct lldpd_hardware *hardware;
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+		if (strcmp(hardware->h_ifname, name) == 0) {
+			if (hardware->h_flags == 0) {
+				if (hardware->h_ifindex != 0 &&
+				    hardware->h_ifindex != index) {
+					log_debug("interfaces",
+					    "%s changed index: from %d to %d",
+					    hardware->h_ifname, hardware->h_ifindex,
+					    index);
+					hardware->h_ifindex_changed = 1;
+				}
+				hardware->h_ifindex = index;
+				break;
+			}
+			if (hardware->h_ifindex == index) break;
+		}
+	}
+	return hardware;
+}
+
+/**
+ * Allocate the default local port. This port will be cloned each time we need a
+ * new local port.
+ */
+static void
+lldpd_alloc_default_local_port(struct lldpd *cfg)
+{
+	struct lldpd_port *port;
+
+	if ((port = (struct lldpd_port *)calloc(1, sizeof(struct lldpd_port))) == NULL)
+		fatal("main", NULL);
+
+#ifdef ENABLE_DOT1
+	TAILQ_INIT(&port->p_vlans);
+	TAILQ_INIT(&port->p_ppvids);
+	TAILQ_INIT(&port->p_pids);
+#endif
+#ifdef ENABLE_CUSTOM
+	TAILQ_INIT(&port->p_custom_list);
+#endif
+	cfg->g_default_local_port = port;
+}
+
+/**
+ * Clone a given port. The destination needs to be already allocated.
+ */
+static int
+lldpd_clone_port(struct lldpd_port *destination, struct lldpd_port *source)
+{
+
+	u_int8_t *output = NULL;
+	ssize_t output_len;
+	struct lldpd_port *cloned = NULL;
+	output_len = lldpd_port_serialize(source, (void **)&output);
+	if (output_len == -1 ||
+	    lldpd_port_unserialize(output, output_len, &cloned) <= 0) {
+		log_warnx("alloc", "unable to clone default port");
+		free(output);
+		return -1;
+	}
+	memcpy(destination, cloned, sizeof(struct lldpd_port));
+	free(cloned);
+	free(output);
+#ifdef ENABLE_DOT1
+	marshal_repair_tailq(lldpd_vlan, &destination->p_vlans, v_entries);
+	marshal_repair_tailq(lldpd_ppvid, &destination->p_ppvids, p_entries);
+	marshal_repair_tailq(lldpd_pi, &destination->p_pids, p_entries);
+#endif
+#ifdef ENABLE_CUSTOM
+	marshal_repair_tailq(lldpd_custom, &destination->p_custom_list, next);
+#endif
+	return 0;
+}
+
+struct lldpd_hardware *
+lldpd_alloc_hardware(struct lldpd *cfg, char *name, int index)
+{
+	struct lldpd_hardware *hardware;
+
+	log_debug("alloc", "allocate a new local port (%s)", name);
+
+	if ((hardware = (struct lldpd_hardware *)calloc(1,
+		 sizeof(struct lldpd_hardware))) == NULL)
+		return NULL;
+
+	/* Clone default local port */
+	if (lldpd_clone_port(&hardware->h_lport, cfg->g_default_local_port) == -1) {
+		log_warnx("alloc", "unable to clone default port");
+		free(hardware);
+		return NULL;
+	}
+
+	hardware->h_cfg = cfg;
+	strlcpy(hardware->h_ifname, name, sizeof(hardware->h_ifname));
+	hardware->h_ifindex = index;
+	hardware->h_lport.p_chassis = LOCAL_CHASSIS(cfg);
+	hardware->h_lport.p_chassis->c_refcount++;
+	TAILQ_INIT(&hardware->h_rports);
+
+#ifdef ENABLE_LLDPMED
+	if (LOCAL_CHASSIS(cfg)->c_med_cap_available) {
+		hardware->h_lport.p_med_cap_enabled = LLDP_MED_CAP_CAP;
+		if (!cfg->g_config.c_noinventory)
+			hardware->h_lport.p_med_cap_enabled |= LLDP_MED_CAP_IV;
+	}
+#endif
+
+	levent_hardware_init(hardware);
+	return hardware;
+}
+
+struct lldpd_mgmt *
+lldpd_alloc_mgmt(int family, void *addrptr, size_t addrsize, u_int32_t iface)
+{
+	struct lldpd_mgmt *mgmt;
+
+	log_debug("alloc", "allocate a new management address (family: %d)", family);
+
+	if (family <= LLDPD_AF_UNSPEC || family >= LLDPD_AF_LAST) {
+		errno = EAFNOSUPPORT;
+		return NULL;
+	}
+	if (addrsize > LLDPD_MGMT_MAXADDRSIZE) {
+		errno = EOVERFLOW;
+		return NULL;
+	}
+	mgmt = calloc(1, sizeof(struct lldpd_mgmt));
+	if (mgmt == NULL) {
+		errno = ENOMEM;
+		return NULL;
+	}
+	mgmt->m_family = family;
+	memcpy(&mgmt->m_addr, addrptr, addrsize);
+	mgmt->m_addrsize = addrsize;
+	mgmt->m_iface = iface;
+	return mgmt;
+}
+
+void
+lldpd_hardware_cleanup(struct lldpd *cfg, struct lldpd_hardware *hardware)
+{
+	log_debug("alloc", "cleanup hardware port %s", hardware->h_ifname);
+
+	free(hardware->h_lport_previous);
+	free(hardware->h_lchassis_previous_id);
+	free(hardware->h_lport_previous_id);
+	free(hardware->h_ifdescr_previous);
+	lldpd_port_cleanup(&hardware->h_lport, 1);
+	if (hardware->h_ops && hardware->h_ops->cleanup)
+		hardware->h_ops->cleanup(cfg, hardware);
+	levent_hardware_release(hardware);
+	free(hardware);
+}
+
+static void
+lldpd_ifdescr_neighbors(struct lldpd *cfg)
+{
+	if (!cfg->g_config.c_set_ifdescr) return;
+	struct lldpd_hardware *hardware;
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+		struct lldpd_port *port;
+		char *description;
+		const char *neighbor = NULL;
+		unsigned neighbors = 0;
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			if (SMART_HIDDEN(port)) continue;
+			neighbors++;
+			neighbor = port->p_chassis->c_name;
+		}
+		if (neighbors == 0)
+			description = strdup("");
+		else if (neighbors == 1 && neighbor && *neighbor != '\0') {
+			if (asprintf(&description, "%s", neighbor) == -1) {
+				continue;
+			}
+		} else {
+			if (asprintf(&description, "%d neighbor%s", neighbors,
+				(neighbors > 1) ? "s" : "") == -1) {
+				continue;
+			}
+		}
+		if (hardware->h_ifdescr_previous == NULL ||
+		    strcmp(hardware->h_ifdescr_previous, description)) {
+			priv_iface_description(hardware->h_ifname, description);
+			free(hardware->h_ifdescr_previous);
+			hardware->h_ifdescr_previous = description;
+		} else
+			free(description);
+	}
+}
+
+static void
+lldpd_count_neighbors(struct lldpd *cfg)
+{
+#if HAVE_SETPROCTITLE
+	struct lldpd_chassis *chassis;
+	const char *neighbor;
+	unsigned neighbors = 0;
+	TAILQ_FOREACH (chassis, &cfg->g_chassis, c_entries) {
+		neighbors++;
+		neighbor = chassis->c_name;
+	}
+	neighbors--;
+	if (neighbors == 0)
+		setproctitle("no neighbor.");
+	else if (neighbors == 1 && neighbor && *neighbor != '\0')
+		setproctitle("connected to %s.", neighbor);
+	else
+		setproctitle("%d neighbor%s.", neighbors, (neighbors > 1) ? "s" : "");
+#endif
+	lldpd_ifdescr_neighbors(cfg);
+}
+
+static void
+notify_clients_deletion(struct lldpd_hardware *hardware, struct lldpd_port *rport)
+{
+	TRACE(LLDPD_NEIGHBOR_DELETE(hardware->h_ifname, rport->p_chassis->c_name,
+	    rport->p_descr));
+	levent_ctl_notify(hardware->h_ifname, NEIGHBOR_CHANGE_DELETED, rport);
+#ifdef USE_SNMP
+	agent_notify(hardware, NEIGHBOR_CHANGE_DELETED, rport);
+#endif
+}
+
+static void
+lldpd_reset_timer(struct lldpd *cfg)
+{
+	/* Reset timer for ports that have been changed. */
+	struct lldpd_hardware *hardware;
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+		/* We keep a flat copy of the local port to see if there is any
+		 * change. To do this, we zero out fields that are not
+		 * significant, marshal the port, then restore. */
+		struct lldpd_port *port = &hardware->h_lport;
+		/* Take the current flags into account to detect a change. */
+		port->_p_hardware_flags = hardware->h_flags;
+		u_int8_t *output = NULL;
+		ssize_t output_len;
+		char save[LLDPD_PORT_START_MARKER];
+		memcpy(save, port, sizeof(save));
+		/* coverity[sizeof_mismatch]
+		   We intentionally partially memset port */
+		memset(port, 0, sizeof(save));
+		output_len = lldpd_port_serialize(port, (void **)&output);
+		memcpy(port, save, sizeof(save));
+		if (output_len == -1) {
+			log_warnx("localchassis",
+			    "unable to serialize local port %s to check for differences",
+			    hardware->h_ifname);
+			continue;
+		}
+
+		/* Compare with the previous value */
+		if (!hardware->h_ifindex_changed && hardware->h_lport_previous &&
+		    output_len == hardware->h_lport_previous_len &&
+		    !memcmp(output, hardware->h_lport_previous, output_len)) {
+			log_debug("localchassis", "no change detected for port %s",
+			    hardware->h_ifname);
+		} else {
+			log_debug("localchassis",
+			    "change detected for port %s, resetting its timer",
+			    hardware->h_ifname);
+			hardware->h_ifindex_changed = 0;
+			levent_schedule_pdu(hardware);
+		}
+
+		/* Update the value */
+		free(hardware->h_lport_previous);
+		hardware->h_lport_previous = output;
+		hardware->h_lport_previous_len = output_len;
+	}
+}
+
+static void
+lldpd_all_chassis_cleanup(struct lldpd *cfg)
+{
+	struct lldpd_chassis *chassis, *chassis_next;
+	log_debug("localchassis", "cleanup all chassis");
+
+	for (chassis = TAILQ_FIRST(&cfg->g_chassis); chassis; chassis = chassis_next) {
+		chassis_next = TAILQ_NEXT(chassis, c_entries);
+		if (chassis->c_refcount == 0) {
+			TAILQ_REMOVE(&cfg->g_chassis, chassis, c_entries);
+			lldpd_chassis_cleanup(chassis, 1);
+		}
+	}
+}
+
+void
+lldpd_cleanup(struct lldpd *cfg)
+{
+	struct lldpd_hardware *hardware, *hardware_next;
+
+	log_debug("localchassis", "cleanup all ports");
+
+	for (hardware = TAILQ_FIRST(&cfg->g_hardware); hardware != NULL;
+	     hardware = hardware_next) {
+		hardware_next = TAILQ_NEXT(hardware, h_entries);
+		if (!hardware->h_flags) {
+			int m = cfg->g_config.c_perm_ifaces ?
+			    pattern_match(hardware->h_ifname,
+				cfg->g_config.c_perm_ifaces, 0) :
+			    0;
+			switch (m) {
+			case PATTERN_MATCH_DENIED:
+				log_debug("localchassis",
+				    "delete non-permanent interface %s",
+				    hardware->h_ifname);
+				TRACE(LLDPD_INTERFACES_DELETE(hardware->h_ifname));
+				TAILQ_REMOVE(&cfg->g_hardware, hardware, h_entries);
+				lldpd_remote_cleanup(hardware, notify_clients_deletion,
+				    1);
+				lldpd_hardware_cleanup(cfg, hardware);
+				break;
+			case PATTERN_MATCH_ALLOWED:
+			case PATTERN_MATCH_ALLOWED_EXACT:
+				log_debug("localchassis", "do not delete %s, permanent",
+				    hardware->h_ifname);
+				lldpd_remote_cleanup(hardware, notify_clients_deletion,
+				    1);
+				break;
+			}
+		} else {
+			lldpd_remote_cleanup(hardware, notify_clients_deletion,
+			    !(hardware->h_flags & IFF_RUNNING));
+		}
+	}
+
+	levent_schedule_cleanup(cfg);
+	lldpd_all_chassis_cleanup(cfg);
+	lldpd_count_neighbors(cfg);
+}
+
+/* Update chassis `ochassis' with values from `chassis'. The later one is not
+   expected to be part of a list! It will also be wiped from memory. */
+static void
+lldpd_move_chassis(struct lldpd_chassis *ochassis, struct lldpd_chassis *chassis)
+{
+	struct lldpd_mgmt *mgmt, *mgmt_next;
+
+	/* We want to keep refcount, index and list stuff from the current
+	 * chassis */
+	TAILQ_ENTRY(lldpd_chassis) entries;
+	int refcount = ochassis->c_refcount;
+	int index = ochassis->c_index;
+	memcpy(&entries, &ochassis->c_entries, sizeof(entries));
+	lldpd_chassis_cleanup(ochassis, 0);
+
+	/* Make the copy. */
+	/* WARNING: this is a kludgy hack, we need in-place copy and cannot use
+	 * marshaling. */
+	memcpy(ochassis, chassis, sizeof(struct lldpd_chassis));
+	TAILQ_INIT(&ochassis->c_mgmt);
+
+	/* Copy of management addresses */
+	for (mgmt = TAILQ_FIRST(&chassis->c_mgmt); mgmt != NULL; mgmt = mgmt_next) {
+		mgmt_next = TAILQ_NEXT(mgmt, m_entries);
+		TAILQ_REMOVE(&chassis->c_mgmt, mgmt, m_entries);
+		TAILQ_INSERT_TAIL(&ochassis->c_mgmt, mgmt, m_entries);
+	}
+
+	/* Restore saved values */
+	ochassis->c_refcount = refcount;
+	ochassis->c_index = index;
+	memcpy(&ochassis->c_entries, &entries, sizeof(entries));
+
+	/* Get rid of the new chassis */
+	free(chassis);
+}
+
+static int
+lldpd_guess_type(struct lldpd *cfg, char *frame, int s)
+{
+	size_t i, j;
+	if (s < ETHER_ADDR_LEN) return -1;
+	for (i = 0; cfg->g_protocols[i].mode != 0; i++) {
+		if (!cfg->g_protocols[i].enabled) continue;
+		if (cfg->g_protocols[i].guess == NULL) {
+			for (j = 0; j < sizeof(cfg->g_protocols[0].mac) /
+				 sizeof(cfg->g_protocols[0].mac[0]);
+			     j++) {
+				if (memcmp(frame, cfg->g_protocols[i].mac[j],
+					ETHER_ADDR_LEN) == 0) {
+					log_debug("decode",
+					    "guessed protocol is %s (from MAC address)",
+					    cfg->g_protocols[i].name);
+					return cfg->g_protocols[i].mode;
+				}
+			}
+		} else {
+			if (cfg->g_protocols[i].guess(frame, s)) {
+				log_debug("decode",
+				    "guessed protocol is %s (from detector function)",
+				    cfg->g_protocols[i].name);
+				return cfg->g_protocols[i].mode;
+			}
+		}
+	}
+	return -1;
+}
+
+static void
+lldpd_decode(struct lldpd *cfg, char *frame, int s, struct lldpd_hardware *hardware)
+{
+	int i;
+	struct lldpd_chassis *chassis, *ochassis = NULL;
+	struct lldpd_port *port, *oport = NULL, *aport;
+	int guess = LLDPD_MODE_LLDP;
+
+	log_debug("decode", "decode a received frame on %s", hardware->h_ifname);
+
+	if (s < sizeof(struct ether_header) + 4) {
+		/* Too short, just discard it */
+		hardware->h_rx_discarded_cnt++;
+		return;
+	}
+
+	/* Decapsulate VLAN frames */
+	struct ether_header eheader;
+	memcpy(&eheader, frame, sizeof(struct ether_header));
+	if (eheader.ether_type == htons(ETHERTYPE_VLAN)) {
+		/* VLAN decapsulation means to shift 4 bytes left the frame from
+		 * offset 2*ETHER_ADDR_LEN */
+		memmove(frame + 2 * ETHER_ADDR_LEN, frame + 2 * ETHER_ADDR_LEN + 4,
+		    s - 2 * ETHER_ADDR_LEN);
+		s -= 4;
+	}
+
+	TAILQ_FOREACH (oport, &hardware->h_rports, p_entries) {
+		if ((oport->p_lastframe != NULL) && (oport->p_lastframe->size == s) &&
+		    (memcmp(oport->p_lastframe->frame, frame, s) == 0)) {
+			/* Already received the same frame */
+			log_debug("decode", "duplicate frame, no need to decode");
+			oport->p_lastupdate = time(NULL);
+			return;
+		}
+	}
+
+	guess = lldpd_guess_type(cfg, frame, s);
+	for (i = 0; cfg->g_protocols[i].mode != 0; i++) {
+		if (!cfg->g_protocols[i].enabled) continue;
+		if (cfg->g_protocols[i].mode == guess) {
+			log_debug("decode", "using decode function for %s protocol",
+			    cfg->g_protocols[i].name);
+			if (cfg->g_protocols[i].decode(cfg, frame, s, hardware,
+				&chassis, &port) == -1) {
+				log_debug("decode",
+				    "function for %s protocol did not decode this frame",
+				    cfg->g_protocols[i].name);
+				hardware->h_rx_discarded_cnt++;
+				return;
+			}
+			chassis->c_protocol = port->p_protocol =
+			    cfg->g_protocols[i].mode;
+			break;
+		}
+	}
+	if (cfg->g_protocols[i].mode == 0) {
+		log_debug("decode", "unable to guess frame type on %s",
+		    hardware->h_ifname);
+		return;
+	}
+	TRACE(LLDPD_FRAME_DECODED(hardware->h_ifname, cfg->g_protocols[i].name,
+	    chassis->c_name, port->p_descr));
+
+	/* Do we already have the same MSAP somewhere? */
+	int count = 0;
+	log_debug("decode", "search for the same MSAP");
+	TAILQ_FOREACH (oport, &hardware->h_rports, p_entries) {
+		if (port->p_protocol == oport->p_protocol) {
+			count++;
+			if ((port->p_id_subtype == oport->p_id_subtype) &&
+			    (port->p_id_len == oport->p_id_len) &&
+			    (memcmp(port->p_id, oport->p_id, port->p_id_len) == 0) &&
+			    (chassis->c_id_subtype == oport->p_chassis->c_id_subtype) &&
+			    (chassis->c_id_len == oport->p_chassis->c_id_len) &&
+			    (memcmp(chassis->c_id, oport->p_chassis->c_id,
+				 chassis->c_id_len) == 0)) {
+				ochassis = oport->p_chassis;
+				log_debug("decode", "MSAP is already known");
+				break;
+			}
+		}
+	}
+	/* Do we have room for a new MSAP? */
+	if (!oport && cfg->g_config.c_max_neighbors) {
+		if (count == (cfg->g_config.c_max_neighbors - 1)) {
+			log_debug("decode",
+			    "max neighbors %d reached for port %s, "
+			    "dropping any new ones silently",
+			    cfg->g_config.c_max_neighbors, hardware->h_ifname);
+		} else if (count > cfg->g_config.c_max_neighbors - 1) {
+			log_debug("decode",
+			    "too many neighbors for port %s, drop this new one",
+			    hardware->h_ifname);
+			lldpd_port_cleanup(port, 1);
+			lldpd_chassis_cleanup(chassis, 1);
+			free(port);
+			return;
+		}
+	}
+	/* No, but do we already know the system? */
+	if (!oport) {
+		log_debug("decode", "MSAP is unknown, search for the chassis");
+		TAILQ_FOREACH (ochassis, &cfg->g_chassis, c_entries) {
+			if ((chassis->c_protocol == ochassis->c_protocol) &&
+			    (chassis->c_id_subtype == ochassis->c_id_subtype) &&
+			    (chassis->c_id_len == ochassis->c_id_len) &&
+			    (memcmp(chassis->c_id, ochassis->c_id, chassis->c_id_len) ==
+				0))
+				break;
+		}
+	}
+
+	if (oport) {
+		/* The port is known, remove it before adding it back */
+		TAILQ_REMOVE(&hardware->h_rports, oport, p_entries);
+		lldpd_port_cleanup(oport, 1);
+		free(oport);
+	}
+	if (ochassis) {
+		if (port->p_ttl == 0) {
+			/* Shutdown LLDPDU is special. We do not want to replace
+			 * the chassis. Free the new chassis (which is mostly empty) */
+			log_debug("decode", "received a shutdown LLDPDU");
+			lldpd_chassis_cleanup(chassis, 1);
+		} else {
+			lldpd_move_chassis(ochassis, chassis);
+		}
+		chassis = ochassis;
+	} else {
+		/* Chassis not known, add it */
+		log_debug("decode", "unknown chassis, add it to the list");
+		chassis->c_index = ++cfg->g_lastrid;
+		chassis->c_refcount = 0;
+		TAILQ_INSERT_TAIL(&cfg->g_chassis, chassis, c_entries);
+		i = 0;
+		TAILQ_FOREACH (ochassis, &cfg->g_chassis, c_entries)
+			i++;
+		log_debug("decode", "%d different systems are known", i);
+	}
+	/* Add port */
+	port->p_lastchange = port->p_lastupdate = time(NULL);
+	if ((port->p_lastframe = (struct lldpd_frame *)malloc(
+		 s + sizeof(struct lldpd_frame))) != NULL) {
+		port->p_lastframe->size = s;
+		memcpy(port->p_lastframe->frame, frame, s);
+	}
+	TAILQ_INSERT_TAIL(&hardware->h_rports, port, p_entries);
+	port->p_chassis = chassis;
+	port->p_chassis->c_refcount++;
+	/* Several cases are possible :
+	     1. chassis is new, its refcount was 0. It is now attached
+		to this port, its refcount is 1.
+	     2. chassis already exists and was attached to another
+		port, we increase its refcount accordingly.
+	     3. chassis already exists and was attached to the same
+		port, its refcount was decreased with
+		lldpd_port_cleanup() and is now increased again.
+
+	   In all cases, if the port already existed, it has been
+	   freed with lldpd_port_cleanup() and therefore, the refcount
+	   of the chassis that was attached to it is decreased.
+	*/
+	i = 0;
+	/* coverity[use_after_free]
+	   TAILQ_REMOVE does the right thing */
+	TAILQ_FOREACH (aport, &hardware->h_rports, p_entries)
+		i++;
+	log_debug("decode", "%d neighbors for %s", i, hardware->h_ifname);
+
+	if (!oport) hardware->h_insert_cnt++;
+
+	/* Notify */
+	log_debug("decode", "send notifications for changes on %s", hardware->h_ifname);
+	if (oport) {
+		TRACE(LLDPD_NEIGHBOR_UPDATE(hardware->h_ifname, chassis->c_name,
+		    port->p_descr, i));
+		levent_ctl_notify(hardware->h_ifname, NEIGHBOR_CHANGE_UPDATED, port);
+#ifdef USE_SNMP
+		agent_notify(hardware, NEIGHBOR_CHANGE_UPDATED, port);
+#endif
+	} else {
+		TRACE(LLDPD_NEIGHBOR_NEW(hardware->h_ifname, chassis->c_name,
+		    port->p_descr, i));
+		levent_ctl_notify(hardware->h_ifname, NEIGHBOR_CHANGE_ADDED, port);
+#ifdef USE_SNMP
+		agent_notify(hardware, NEIGHBOR_CHANGE_ADDED, port);
+#endif
+	}
+
+#ifdef ENABLE_LLDPMED
+	if (!oport && port->p_chassis->c_med_type) {
+		/* New neighbor, fast start */
+		if (hardware->h_cfg->g_config.c_enable_fast_start &&
+		    !hardware->h_tx_fast) {
+			log_debug("decode",
+			    "%s: entering fast start due to "
+			    "new neighbor",
+			    hardware->h_ifname);
+			hardware->h_tx_fast = hardware->h_cfg->g_config.c_tx_fast_init;
+		}
+
+		levent_schedule_pdu(hardware);
+	}
+#endif
+
+	return;
+}
+
+/* Get the output of lsb_release -s -d.  This is a slow function. It should be
+   called once. It return NULL if any problem happens. Otherwise, this is a
+   statically allocated buffer. The result includes the trailing \n  */
+static char *
+lldpd_get_lsb_release()
+{
+	static char release[1024];
+	char cmd[][12] = { "lsb_release", "-s", "-d" };
+	char *const command[] = { cmd[0], cmd[1], cmd[2], NULL };
+	int pid, status, devnull, count;
+	int pipefd[2];
+
+	log_debug("localchassis", "grab LSB release");
+
+	if (pipe(pipefd)) {
+		log_warn("localchassis", "unable to get a pair of pipes");
+		return NULL;
+	}
+
+	pid = vfork();
+	switch (pid) {
+	case -1:
+		log_warn("localchassis", "unable to fork");
+		return NULL;
+	case 0:
+		/* Child, exec lsb_release */
+		close(pipefd[0]);
+		if ((devnull = open("/dev/null", O_RDWR, 0)) != -1) {
+			dup2(devnull, STDIN_FILENO);
+			dup2(devnull, STDERR_FILENO);
+			dup2(pipefd[1], STDOUT_FILENO);
+			if (devnull > 2) close(devnull);
+			if (pipefd[1] > 2) close(pipefd[1]);
+			execvp("lsb_release", command);
+		}
+		_exit(127);
+		break;
+	default:
+		/* Father, read the output from the children */
+		close(pipefd[1]);
+		count = 0;
+		do {
+			status =
+			    read(pipefd[0], release + count, sizeof(release) - count);
+			if ((status == -1) && (errno == EINTR)) continue;
+			if (status > 0) count += status;
+		} while (count < sizeof(release) && (status > 0));
+		if (status < 0) {
+			log_info("localchassis", "unable to read from lsb_release");
+			close(pipefd[0]);
+			waitpid(pid, &status, 0);
+			return NULL;
+		}
+		close(pipefd[0]);
+		if (count >= sizeof(release)) {
+			log_info("localchassis", "output of lsb_release is too large");
+			waitpid(pid, &status, 0);
+			return NULL;
+		}
+		status = -1;
+		if (waitpid(pid, &status, 0) != pid) return NULL;
+		if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) {
+			log_info("localchassis",
+			    "lsb_release information not available");
+			return NULL;
+		}
+		if (!count) {
+			log_info("localchassis",
+			    "lsb_release returned an empty string");
+			return NULL;
+		}
+		release[count] = '\0';
+		return release;
+	}
+	/* Should not be here */
+	return NULL;
+}
+
+/* Same like lldpd_get_lsb_release but reads /etc/os-release for PRETTY_NAME=. */
+static char *
+lldpd_get_os_release()
+{
+	static char release[1024];
+	char line[1024];
+	char *key, *val;
+	char *ptr1 = release;
+
+	log_debug("localchassis", "grab OS release");
+	FILE *fp = fopen("/etc/os-release", "r");
+	if (!fp) {
+		log_debug("localchassis", "could not open /etc/os-release");
+		fp = fopen("/usr/lib/os-release", "r");
+	}
+	if (!fp) {
+		log_info("localchassis",
+		    "could not open either /etc/os-release or /usr/lib/os-release");
+		return NULL;
+	}
+
+	while ((fgets(line, sizeof(line), fp) != NULL)) {
+		key = strtok(line, "=");
+		val = strtok(NULL, "=");
+
+		if (strncmp(key, "PRETTY_NAME", sizeof(line)) == 0) {
+			strlcpy(release, val, sizeof(line));
+			break;
+		}
+	}
+	fclose(fp);
+
+	/* Remove trailing newline and all " in the string. */
+	ptr1 = release + strlen(release) - 1;
+	while (ptr1 != release && ((*ptr1 == '"') || (*ptr1 == '\n'))) {
+		*ptr1 = '\0';
+		ptr1--;
+	}
+	if (release[0] == '"') return release + 1;
+	return release;
+}
+
+static void
+lldpd_hide_ports(struct lldpd *cfg, struct lldpd_hardware *hardware, int mask)
+{
+	struct lldpd_port *port;
+	int protocols[LLDPD_MODE_MAX + 1];
+	char buffer[256];
+	int i, j, k, found;
+	unsigned int min;
+
+	log_debug("smartfilter", "apply smart filter for port %s", hardware->h_ifname);
+
+	/* Compute the number of occurrences of each protocol */
+	for (i = 0; i <= LLDPD_MODE_MAX; i++)
+		protocols[i] = 0;
+	TAILQ_FOREACH (port, &hardware->h_rports, p_entries)
+		protocols[port->p_protocol]++;
+
+	/* Turn the protocols[] array into an array of
+	   enabled/disabled protocols. 1 means enabled, 0
+	   means disabled. */
+	min = (unsigned int)-1;
+	for (i = 0; i <= LLDPD_MODE_MAX; i++)
+		if (protocols[i] && (protocols[i] < min)) min = protocols[i];
+	found = 0;
+	for (i = 0; i <= LLDPD_MODE_MAX; i++)
+		if ((protocols[i] == min) && !found) {
+			/* If we need a tie breaker, we take
+			   the first protocol only */
+			if (cfg->g_config.c_smart & mask &
+			    (SMART_OUTGOING_ONE_PROTO | SMART_INCOMING_ONE_PROTO))
+				found = 1;
+			protocols[i] = 1;
+		} else
+			protocols[i] = 0;
+
+	/* We set the p_hidden flag to 1 if the protocol is disabled */
+	TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+		if (mask == SMART_OUTGOING)
+			port->p_hidden_out = protocols[port->p_protocol] ? 0 : 1;
+		else
+			port->p_hidden_in = protocols[port->p_protocol] ? 0 : 1;
+	}
+
+	/* If we want only one neighbor, we take the first one */
+	if (cfg->g_config.c_smart & mask &
+	    (SMART_OUTGOING_ONE_NEIGH | SMART_INCOMING_ONE_NEIGH)) {
+		found = 0;
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			if (mask == SMART_OUTGOING) {
+				if (found) port->p_hidden_out = 1;
+				if (!port->p_hidden_out) found = 1;
+			}
+			if (mask == SMART_INCOMING) {
+				if (found) port->p_hidden_in = 1;
+				if (!port->p_hidden_in) found = 1;
+			}
+		}
+	}
+
+	/* Print a debug message summarizing the operation */
+	for (i = 0; i <= LLDPD_MODE_MAX; i++)
+		protocols[i] = 0;
+	k = j = 0;
+	TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+		if (!(((mask == SMART_OUTGOING) && port->p_hidden_out) ||
+			((mask == SMART_INCOMING) && port->p_hidden_in))) {
+			k++;
+			protocols[port->p_protocol] = 1;
+		}
+		j++;
+	}
+	buffer[0] = '\0';
+	for (i = 0; cfg->g_protocols[i].mode != 0; i++) {
+		if (cfg->g_protocols[i].enabled &&
+		    protocols[cfg->g_protocols[i].mode]) {
+			if (strlen(buffer) + strlen(cfg->g_protocols[i].name) + 3 >
+			    sizeof(buffer)) {
+				/* Unlikely, our buffer is too small */
+				memcpy(buffer + sizeof(buffer) - 4, "...", 4);
+				break;
+			}
+			if (buffer[0])
+				strncat(buffer, ", ",
+				    sizeof(buffer) - strlen(buffer) - 1);
+			strncat(buffer, cfg->g_protocols[i].name,
+			    sizeof(buffer) - strlen(buffer) - 1);
+		}
+	}
+	log_debug("smartfilter", "%s: %s: %d visible neighbors (out of %d)",
+	    hardware->h_ifname, (mask == SMART_OUTGOING) ? "out filter" : "in filter",
+	    k, j);
+	log_debug("smartfilter", "%s: protocols: %s", hardware->h_ifname,
+	    buffer[0] ? buffer : "(none)");
+}
+
+/* Hide unwanted ports depending on smart mode set by the user */
+static void
+lldpd_hide_all(struct lldpd *cfg)
+{
+	struct lldpd_hardware *hardware;
+
+	if (!cfg->g_config.c_smart) return;
+	log_debug("smartfilter", "apply smart filter results on all ports");
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries) {
+		if (cfg->g_config.c_smart & SMART_INCOMING_FILTER)
+			lldpd_hide_ports(cfg, hardware, SMART_INCOMING);
+		if (cfg->g_config.c_smart & SMART_OUTGOING_FILTER)
+			lldpd_hide_ports(cfg, hardware, SMART_OUTGOING);
+	}
+}
+
+/* If PD device and PSE allocated power, echo back this change. If we have
+ * several LLDP neighbors, we use the latest updated. */
+static void
+lldpd_dot3_power_pd_pse(struct lldpd_hardware *hardware)
+{
+#ifdef ENABLE_DOT3
+	struct lldpd_port *port, *selected_port = NULL;
+	/* Are we a PD device? */
+	if (hardware->h_lport.p_power.devicetype != LLDP_DOT3_POWER_PD) return;
+	TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+		if (port->p_hidden_in) continue;
+
+		if (port->p_protocol != LLDPD_MODE_LLDP &&
+		    port->p_protocol != LLDPD_MODE_CDPV2)
+			continue;
+
+		if (port->p_power.devicetype != LLDP_DOT3_POWER_PSE) continue;
+		if (!selected_port || port->p_lastupdate > selected_port->p_lastupdate)
+			selected_port = port;
+	}
+	if (selected_port &&
+	    selected_port->p_power.allocated != hardware->h_lport.p_power.allocated) {
+		log_info("receive",
+		    "for %s, PSE told us allocated is now %d instead of %d",
+		    hardware->h_ifname, selected_port->p_power.allocated,
+		    hardware->h_lport.p_power.allocated);
+		hardware->h_lport.p_power.allocated = selected_port->p_power.allocated;
+		levent_schedule_pdu(hardware);
+	}
+
+#  ifdef ENABLE_CDP
+	if (selected_port &&
+	    selected_port->p_cdp_power.management_id !=
+		hardware->h_lport.p_cdp_power.management_id) {
+		hardware->h_lport.p_cdp_power.management_id =
+		    selected_port->p_cdp_power.management_id;
+	}
+#  endif
+
+#endif
+}
+
+void
+lldpd_recv(struct lldpd *cfg, struct lldpd_hardware *hardware, int fd)
+{
+	char *buffer = NULL;
+	int n;
+	log_debug("receive", "receive a frame on %s", hardware->h_ifname);
+	if ((buffer = (char *)malloc(hardware->h_mtu)) == NULL) {
+		log_warn("receive", "failed to alloc reception buffer");
+		return;
+	}
+	if ((n = hardware->h_ops->recv(cfg, hardware, fd, buffer, hardware->h_mtu)) ==
+	    -1) {
+		log_debug("receive", "discard frame received on %s",
+		    hardware->h_ifname);
+		free(buffer);
+		return;
+	}
+	if (hardware->h_lport.p_disable_rx) {
+		log_debug("receive", "RX disabled, ignore the frame on %s",
+		    hardware->h_ifname);
+		free(buffer);
+		return;
+	}
+	if (cfg->g_config.c_paused) {
+		log_debug("receive", "paused, ignore the frame on %s",
+		    hardware->h_ifname);
+		free(buffer);
+		return;
+	}
+	hardware->h_rx_cnt++;
+	log_debug("receive", "decode received frame on %s", hardware->h_ifname);
+	TRACE(LLDPD_FRAME_RECEIVED(hardware->h_ifname, buffer, (size_t)n));
+	lldpd_decode(cfg, buffer, n, hardware);
+	lldpd_hide_all(cfg); /* Immediatly hide */
+	lldpd_dot3_power_pd_pse(hardware);
+	lldpd_count_neighbors(cfg);
+	free(buffer);
+}
+
+static void
+lldpd_send_shutdown(struct lldpd_hardware *hardware)
+{
+	struct lldpd *cfg = hardware->h_cfg;
+	if (cfg->g_config.c_receiveonly || cfg->g_config.c_paused) return;
+	if (hardware->h_lport.p_disable_tx) return;
+	if ((hardware->h_flags & IFF_RUNNING) == 0) return;
+
+	/* It's safe to call `lldp_send_shutdown()` because shutdown LLDPU will
+	 * only be emitted if LLDP was sent on that port. */
+	if (lldp_send_shutdown(hardware->h_cfg, hardware) != 0)
+		log_warnx("send", "unable to send shutdown LLDPDU on %s",
+		    hardware->h_ifname);
+}
+
+void
+lldpd_send(struct lldpd_hardware *hardware)
+{
+	struct lldpd *cfg = hardware->h_cfg;
+	struct lldpd_port *port;
+	int i, sent;
+
+	if (cfg->g_config.c_receiveonly || cfg->g_config.c_paused) return;
+	if (hardware->h_lport.p_disable_tx) return;
+	if ((hardware->h_flags & IFF_RUNNING) == 0) return;
+
+	log_debug("send", "send PDU on %s", hardware->h_ifname);
+	sent = 0;
+	for (i = 0; cfg->g_protocols[i].mode != 0; i++) {
+		if (!cfg->g_protocols[i].enabled) continue;
+		/* We send only if we have at least one remote system
+		 * speaking this protocol or if the protocol is forced */
+		if (cfg->g_protocols[i].enabled > 1) {
+			cfg->g_protocols[i].send(cfg, hardware);
+			sent++;
+			continue;
+		}
+		TAILQ_FOREACH (port, &hardware->h_rports, p_entries) {
+			/* If this remote port is disabled, we don't
+			 * consider it */
+			if (port->p_hidden_out) continue;
+			if (port->p_protocol == cfg->g_protocols[i].mode) {
+				TRACE(LLDPD_FRAME_SEND(hardware->h_ifname,
+				    cfg->g_protocols[i].name));
+				log_debug("send", "send PDU on %s with protocol %s",
+				    hardware->h_ifname, cfg->g_protocols[i].name);
+				cfg->g_protocols[i].send(cfg, hardware);
+				hardware->h_lport.p_protocol = cfg->g_protocols[i].mode;
+				sent++;
+				break;
+			}
+		}
+	}
+
+	if (!sent) {
+		/* Nothing was sent for this port, let's speak the first
+		 * available protocol. */
+		for (i = 0; cfg->g_protocols[i].mode != 0; i++) {
+			if (!cfg->g_protocols[i].enabled) continue;
+			TRACE(LLDPD_FRAME_SEND(hardware->h_ifname,
+			    cfg->g_protocols[i].name));
+			log_debug("send", "fallback to protocol %s for %s",
+			    cfg->g_protocols[i].name, hardware->h_ifname);
+			cfg->g_protocols[i].send(cfg, hardware);
+			break;
+		}
+		if (cfg->g_protocols[i].mode == 0)
+			log_warnx("send", "no protocol enabled, dunno what to send");
+	}
+}
+
+#ifdef ENABLE_LLDPMED
+static void
+lldpd_med(struct lldpd *cfg, struct utsname *un)
+{
+	static short int once = 0;
+	if (!once && cfg) {
+		LOCAL_CHASSIS(cfg)->c_med_hw = dmi_hw();
+		LOCAL_CHASSIS(cfg)->c_med_fw = dmi_fw();
+		LOCAL_CHASSIS(cfg)->c_med_sn = dmi_sn();
+		LOCAL_CHASSIS(cfg)->c_med_manuf = dmi_manuf();
+		LOCAL_CHASSIS(cfg)->c_med_model = dmi_model();
+		LOCAL_CHASSIS(cfg)->c_med_asset = dmi_asset();
+		if (un) {
+			if (LOCAL_CHASSIS(cfg)->c_med_sw)
+				free(LOCAL_CHASSIS(cfg)->c_med_sw);
+
+			if (cfg->g_config.c_advertise_version)
+				LOCAL_CHASSIS(cfg)->c_med_sw = strdup(un->release);
+			else
+				LOCAL_CHASSIS(cfg)->c_med_sw = strdup("Unknown");
+		}
+		once = 1;
+	}
+}
+#endif
+
+static int
+lldpd_routing_enabled(struct lldpd *cfg)
+{
+	int routing;
+
+	if ((LOCAL_CHASSIS(cfg)->c_cap_available & LLDP_CAP_ROUTER) == 0) return 0;
+
+	if ((routing = interfaces_routing_enabled(cfg)) == -1) {
+		log_debug("localchassis", "unable to check if routing is enabled");
+		return 0;
+	}
+	return routing;
+}
+
+void
+lldpd_update_localchassis(struct lldpd *cfg)
+{
+	struct utsname un;
+	char *hp;
+
+	log_debug("localchassis", "update information for local chassis");
+	assert(LOCAL_CHASSIS(cfg) != NULL);
+
+	/* Set system name and description */
+	if (uname(&un) < 0) fatal("localchassis", "failed to get system information");
+	if (cfg->g_config.c_hostname) {
+		log_debug("localchassis", "use overridden system name `%s`",
+		    cfg->g_config.c_hostname);
+		hp = cfg->g_config.c_hostname;
+	} else {
+		if ((hp = priv_gethostname()) == NULL)
+			fatal("localchassis", "failed to get system name");
+	}
+	free(LOCAL_CHASSIS(cfg)->c_name);
+	free(LOCAL_CHASSIS(cfg)->c_descr);
+	if ((LOCAL_CHASSIS(cfg)->c_name = strdup(hp)) == NULL)
+		fatal("localchassis", NULL);
+	if (cfg->g_config.c_description) {
+		log_debug("localchassis", "use overridden description `%s`",
+		    cfg->g_config.c_description);
+		if (asprintf(&LOCAL_CHASSIS(cfg)->c_descr, "%s",
+			cfg->g_config.c_description) == -1)
+			fatal("localchassis", "failed to set full system description");
+	} else {
+		if (cfg->g_config.c_advertise_version) {
+			log_debug("localchassis", "advertise system version");
+			if (asprintf(&LOCAL_CHASSIS(cfg)->c_descr, "%s %s %s %s %s",
+				cfg->g_lsb_release ? cfg->g_lsb_release : "",
+				un.sysname, un.release, un.version, un.machine) == -1)
+				fatal("localchassis",
+				    "failed to set full system description");
+		} else {
+			log_debug("localchassis", "do not advertise system version");
+			if (asprintf(&LOCAL_CHASSIS(cfg)->c_descr, "%s",
+				cfg->g_lsb_release ? cfg->g_lsb_release : un.sysname) ==
+			    -1)
+				fatal("localchassis",
+				    "failed to set minimal system description");
+		}
+	}
+	if (cfg->g_config.c_platform == NULL)
+		cfg->g_config.c_platform = strdup(un.sysname);
+
+	if (!cfg->g_config.c_cap_override) {
+		/* Check routing */
+		if (lldpd_routing_enabled(cfg)) {
+			log_debug("localchassis",
+			    "routing is enabled, enable router capability");
+			LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_ROUTER;
+		} else
+			LOCAL_CHASSIS(cfg)->c_cap_enabled &= ~LLDP_CAP_ROUTER;
+
+#ifdef ENABLE_LLDPMED
+		if (LOCAL_CHASSIS(cfg)->c_cap_available & LLDP_CAP_TELEPHONE)
+			LOCAL_CHASSIS(cfg)->c_cap_enabled |= LLDP_CAP_TELEPHONE;
+		lldpd_med(cfg, &un);
+#endif
+		if ((LOCAL_CHASSIS(cfg)->c_cap_available & LLDP_CAP_STATION) &&
+		    (LOCAL_CHASSIS(cfg)->c_cap_enabled == 0))
+			LOCAL_CHASSIS(cfg)->c_cap_enabled = LLDP_CAP_STATION;
+		else if (LOCAL_CHASSIS(cfg)->c_cap_enabled != LLDP_CAP_STATION)
+			LOCAL_CHASSIS(cfg)->c_cap_enabled &= ~LLDP_CAP_STATION;
+	}
+
+	/* Set chassis ID if needed. This is only done if chassis ID
+	   has not been set previously (with the MAC address of an
+	   interface for example)
+	*/
+	if (cfg->g_config.c_cid_string != NULL) {
+		log_debug("localchassis", "use specified chassis ID string");
+		free(LOCAL_CHASSIS(cfg)->c_id);
+		if (!(LOCAL_CHASSIS(cfg)->c_id = strdup(cfg->g_config.c_cid_string)))
+			fatal("localchassis", NULL);
+		LOCAL_CHASSIS(cfg)->c_id_len = strlen(cfg->g_config.c_cid_string);
+		LOCAL_CHASSIS(cfg)->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LOCAL;
+	}
+	if (LOCAL_CHASSIS(cfg)->c_id == NULL) {
+		log_debug("localchassis",
+		    "no chassis ID is currently set, use chassis name");
+		if (!(LOCAL_CHASSIS(cfg)->c_id = strdup(LOCAL_CHASSIS(cfg)->c_name)))
+			fatal("localchassis", NULL);
+		LOCAL_CHASSIS(cfg)->c_id_len = strlen(LOCAL_CHASSIS(cfg)->c_name);
+		LOCAL_CHASSIS(cfg)->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LOCAL;
+	}
+}
+
+void
+lldpd_update_localports(struct lldpd *cfg)
+{
+	struct lldpd_hardware *hardware;
+
+	log_debug("localchassis", "update information for local ports");
+
+	/* h_flags is set to 0 for each port. If the port is updated, h_flags
+	 * will be set to a non-zero value. This will allow us to clean up any
+	 * non up-to-date port */
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries)
+		hardware->h_flags = 0;
+
+	TRACE(LLDPD_INTERFACES_UPDATE());
+	interfaces_update(cfg);
+	lldpd_cleanup(cfg);
+	lldpd_reset_timer(cfg);
+}
+
+void
+lldpd_loop(struct lldpd *cfg)
+{
+	/* Main loop.
+	   1. Update local ports information
+	   2. Update local chassis information
+	*/
+	log_debug("loop", "start new loop");
+	if (!cfg->g_config.c_cap_override) LOCAL_CHASSIS(cfg)->c_cap_enabled = 0;
+	/* Information for local ports is triggered even when it is possible to
+	 * update them on some other event because we want to refresh them if we
+	 * missed something. */
+	log_debug("loop", "update information for local ports");
+	lldpd_update_localports(cfg);
+	log_debug("loop", "update information for local chassis");
+	lldpd_update_localchassis(cfg);
+	lldpd_count_neighbors(cfg);
+}
+
+static void
+lldpd_exit(struct lldpd *cfg)
+{
+	char *lockname = NULL;
+	struct lldpd_hardware *hardware, *hardware_next;
+	log_debug("main", "exit lldpd");
+
+	TAILQ_FOREACH (hardware, &cfg->g_hardware, h_entries)
+		lldpd_send_shutdown(hardware);
+
+	if (asprintf(&lockname, "%s.lock", cfg->g_ctlname) != -1) {
+		priv_ctl_cleanup(lockname);
+		free(lockname);
+	}
+	close(cfg->g_ctl);
+	priv_ctl_cleanup(cfg->g_ctlname);
+	log_debug("main", "cleanup hardware information");
+	for (hardware = TAILQ_FIRST(&cfg->g_hardware); hardware != NULL;
+	     hardware = hardware_next) {
+		hardware_next = TAILQ_NEXT(hardware, h_entries);
+		log_debug("main", "cleanup interface %s", hardware->h_ifname);
+		lldpd_remote_cleanup(hardware, NULL, 1);
+		lldpd_hardware_cleanup(cfg, hardware);
+	}
+	interfaces_cleanup(cfg);
+	lldpd_port_cleanup(cfg->g_default_local_port, 1);
+	lldpd_all_chassis_cleanup(cfg);
+	free(cfg->g_default_local_port);
+	free(cfg->g_config.c_platform);
+	levent_shutdown(cfg);
+}
+
+/**
+ * Run lldpcli to configure lldpd.
+ *
+ * @return PID of running lldpcli or -1 if error.
+ */
+static pid_t
+lldpd_configure(int use_syslog, int debug, const char *path, const char *ctlname,
+    const char *config_path)
+{
+	pid_t lldpcli = vfork();
+	int devnull;
+
+	char sdebug[debug + 4];
+	if (use_syslog)
+		strlcpy(sdebug, "-s", 3);
+	else {
+		/* debug = 0 -> -sd */
+		/* debug = 1 -> -sdd */
+		/* debug = 2 -> -sddd */
+		memset(sdebug, 'd', sizeof(sdebug));
+		sdebug[debug + 3] = '\0';
+		sdebug[0] = '-';
+		sdebug[1] = 's';
+	}
+	log_debug("main", "invoke %s %s", path, sdebug);
+
+	switch (lldpcli) {
+	case -1:
+		log_warn("main", "unable to fork");
+		return -1;
+	case 0:
+		/* Child, exec lldpcli */
+		if ((devnull = open("/dev/null", O_RDWR, 0)) != -1) {
+			dup2(devnull, STDIN_FILENO);
+			dup2(devnull, STDOUT_FILENO);
+			if (devnull > 2) close(devnull);
+
+			if (config_path) {
+				execl(path, "lldpcli", sdebug, "-u", ctlname, "-C",
+				    config_path, "resume", (char *)NULL);
+			} else {
+				execl(path, "lldpcli", sdebug, "-u", ctlname, "-C",
+				    SYSCONFDIR "/lldpd.conf", "-C",
+				    SYSCONFDIR "/lldpd.d", "resume", (char *)NULL);
+			}
+
+			log_warn("main", "unable to execute %s", path);
+			log_warnx("main",
+			    "configuration is incomplete, lldpd needs to be unpaused");
+		}
+		_exit(127);
+		break;
+	default:
+		/* Father, don't do anything stupid */
+		return lldpcli;
+	}
+	/* Should not be here */
+	return -1;
+}
+
+struct intint {
+	int a;
+	int b;
+};
+static const struct intint filters[] = { { 0, 0 },
+	{ 1,
+	    SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO | SMART_OUTGOING_FILTER |
+		SMART_OUTGOING_ONE_PROTO },
+	{ 2, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO },
+	{ 3, SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_PROTO },
+	{ 4, SMART_INCOMING_FILTER | SMART_OUTGOING_FILTER },
+	{ 5, SMART_INCOMING_FILTER }, { 6, SMART_OUTGOING_FILTER },
+	{ 7,
+	    SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO |
+		SMART_INCOMING_ONE_NEIGH | SMART_OUTGOING_FILTER |
+		SMART_OUTGOING_ONE_PROTO },
+	{ 8,
+	    SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO |
+		SMART_INCOMING_ONE_NEIGH },
+	{ 9,
+	    SMART_INCOMING_FILTER | SMART_INCOMING_ONE_NEIGH | SMART_OUTGOING_FILTER |
+		SMART_OUTGOING_ONE_PROTO },
+	{ 10, SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_NEIGH },
+	{ 11, SMART_INCOMING_FILTER | SMART_INCOMING_ONE_NEIGH },
+	{ 12,
+	    SMART_INCOMING_FILTER | SMART_INCOMING_ONE_NEIGH | SMART_OUTGOING_FILTER |
+		SMART_OUTGOING_ONE_NEIGH },
+	{ 13,
+	    SMART_INCOMING_FILTER | SMART_INCOMING_ONE_NEIGH | SMART_OUTGOING_FILTER },
+	{ 14,
+	    SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO | SMART_OUTGOING_FILTER |
+		SMART_OUTGOING_ONE_NEIGH },
+	{ 15,
+	    SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO | SMART_OUTGOING_FILTER },
+	{ 16,
+	    SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO |
+		SMART_INCOMING_ONE_NEIGH | SMART_OUTGOING_FILTER |
+		SMART_OUTGOING_ONE_NEIGH },
+	{ 17,
+	    SMART_INCOMING_FILTER | SMART_INCOMING_ONE_PROTO |
+		SMART_INCOMING_ONE_NEIGH | SMART_OUTGOING_FILTER },
+	{ 18,
+	    SMART_INCOMING_FILTER | SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_NEIGH },
+	{ 19,
+	    SMART_INCOMING_FILTER | SMART_OUTGOING_FILTER | SMART_OUTGOING_ONE_PROTO },
+	{ -1, 0 } };
+
+#ifndef HOST_OS_OSX
+/**
+ * Tell if we have been started by systemd.
+ */
+static int
+lldpd_started_by_systemd()
+{
+#  ifdef HOST_OS_LINUX
+	int fd = -1;
+	const char *notifysocket = getenv("NOTIFY_SOCKET");
+	if (!notifysocket || !strchr("@/", notifysocket[0]) || strlen(notifysocket) < 2)
+		return 0;
+
+	log_debug("main", "running with systemd, don't fork but signal ready");
+	if ((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0) {
+		log_warn("main", "unable to open systemd notification socket %s",
+		    notifysocket);
+		return 0;
+	}
+
+	struct sockaddr_un su = { .sun_family = AF_UNIX };
+	strlcpy(su.sun_path, notifysocket, sizeof(su.sun_path));
+	if (notifysocket[0] == '@') su.sun_path[0] = 0;
+
+	char ready[] = "READY=1";
+	struct iovec iov = { .iov_base = ready, .iov_len = sizeof ready - 1 };
+	struct msghdr hdr = { .msg_name = &su,
+		.msg_namelen =
+		    offsetof(struct sockaddr_un, sun_path) + strlen(notifysocket),
+		.msg_iov = &iov,
+		.msg_iovlen = 1 };
+	unsetenv("NOTIFY_SOCKET");
+	if (sendmsg(fd, &hdr, MSG_NOSIGNAL) < 0) {
+		log_warn("main", "unable to send notification to systemd");
+		close(fd);
+		return 0;
+	}
+	close(fd);
+	return 1;
+#  else
+	return 0;
+#  endif
+}
+#endif
+
+#ifdef HOST_OS_LINUX
+static void
+version_convert(const char *sversion, unsigned iversion[], size_t n)
+{
+	const char *p = sversion;
+	char *end;
+	for (size_t i = 0; i < n; i++) {
+		iversion[i] = strtol(p, &end, 10);
+		if (*end != '.') break;
+		p = end + 1;
+	}
+}
+
+static void
+version_check(void)
+{
+	struct utsname uts;
+	if (uname(&uts) == -1) return;
+	unsigned version_min[3] = {};
+	unsigned version_cur[3] = {};
+	version_convert(uts.release, version_cur, 3);
+	version_convert(MIN_LINUX_KERNEL_VERSION, version_min, 3);
+	if (version_min[0] > version_cur[0] ||
+	    (version_min[0] == version_cur[0] && version_min[1] > version_cur[1]) ||
+	    (version_min[0] == version_cur[0] && version_min[1] == version_cur[1] &&
+		version_min[2] > version_cur[2])) {
+		log_warnx("lldpd", "minimal kernel version required is %s, got %s",
+		    MIN_LINUX_KERNEL_VERSION, uts.release);
+		log_warnx("lldpd",
+		    "lldpd may be unable to detect bonds and bridges correctly");
+#  ifndef ENABLE_OLDIES
+		log_warnx("lldpd", "consider recompiling with --enable-oldies option");
+#  endif
+	}
+}
+#else
+static void
+version_check(void)
+{
+}
+#endif
+
+int
+lldpd_main(int argc, char *argv[], char *envp[])
+{
+	struct lldpd *cfg;
+	struct lldpd_chassis *lchassis;
+	int ch, debug = 0, use_syslog = 1, daemonize = 1;
+	const char *errstr;
+#ifdef USE_SNMP
+	int snmp = 0;
+	const char *agentx = NULL; /* AgentX socket */
+#endif
+	const char *ctlname = NULL;
+	char *mgmtp = NULL;
+	char *cidp = NULL;
+	char *interfaces = NULL;
+	/* We do not want more options here. Please add them in lldpcli instead
+	 * unless there is a very good reason. Most command-line options will
+	 * get deprecated at some point. */
+	char *popt,
+	    opts[] = "H:vhkrdD:p:xX:m:u:4:6:I:C:p:M:P:S:iL:O:@                    ";
+	int i, found, advertise_version = 1;
+#ifdef ENABLE_LLDPMED
+	int lldpmed = 0, noinventory = 0;
+	int enable_fast_start = 1;
+#endif
+	char *descr_override = NULL;
+	char *platform_override = NULL;
+	char *lsb_release = NULL;
+	const char *lldpcli = LLDPCLI_PATH;
+	const char *pidfile = LLDPD_PID_FILE;
+	int smart = 15;
+	int receiveonly = 0, version = 0;
+	int ctl;
+	const char *config_file = NULL;
+
+#ifdef ENABLE_PRIVSEP
+	/* Non privileged user */
+	struct passwd *user;
+	struct group *group;
+	uid_t uid;
+	gid_t gid;
+#endif
+
+	saved_argv = argv;
+
+#if HAVE_SETPROCTITLE_INIT
+	setproctitle_init(argc, argv, envp);
+#endif
+
+	/*
+	 * Get and parse command line options
+	 */
+	if ((popt = strchr(opts, '@')) != NULL) {
+		for (i = 0; protos[i].mode != 0 && *popt != '\0'; i++)
+			*(popt++) = protos[i].arg;
+		*popt = '\0';
+	}
+	while ((ch = getopt(argc, argv, opts)) != -1) {
+		switch (ch) {
+		case 'h':
+			usage();
+			break;
+		case 'v':
+			version++;
+			break;
+		case 'd':
+			if (daemonize)
+				daemonize = 0;
+			else if (use_syslog)
+				use_syslog = 0;
+			else
+				debug++;
+			break;
+		case 'D':
+			log_accept(optarg);
+			break;
+		case 'p':
+			pidfile = optarg;
+			break;
+		case 'r':
+			receiveonly = 1;
+			break;
+		case 'm':
+			if (mgmtp) {
+				fprintf(stderr, "-m can only be used once\n");
+				usage();
+			}
+			mgmtp = strdup(optarg);
+			break;
+		case 'u':
+			if (ctlname) {
+				fprintf(stderr, "-u can only be used once\n");
+				usage();
+			}
+			ctlname = optarg;
+			break;
+		case 'I':
+			if (interfaces) {
+				fprintf(stderr, "-I can only be used once\n");
+				usage();
+			}
+			interfaces = strdup(optarg);
+			break;
+		case 'C':
+			if (cidp) {
+				fprintf(stderr, "-C can only be used once\n");
+				usage();
+			}
+			cidp = strdup(optarg);
+			break;
+		case 'L':
+			if (strlen(optarg))
+				lldpcli = optarg;
+			else
+				lldpcli = NULL;
+			break;
+		case 'k':
+			advertise_version = 0;
+			break;
+#ifdef ENABLE_LLDPMED
+		case 'M':
+			lldpmed = strtonum(optarg, 1, 4, &errstr);
+			if (errstr) {
+				fprintf(stderr,
+				    "-M requires an argument between 1 and 4\n");
+				usage();
+			}
+			break;
+		case 'i':
+			noinventory = 1;
+			break;
+#else
+		case 'M':
+		case 'i':
+			fprintf(stderr, "LLDP-MED support is not built-in\n");
+			usage();
+			break;
+#endif
+#ifdef USE_SNMP
+		case 'x':
+			snmp = 1;
+			break;
+		case 'X':
+			if (agentx) {
+				fprintf(stderr, "-X can only be used once\n");
+				usage();
+			}
+			snmp = 1;
+			agentx = optarg;
+			break;
+#else
+		case 'x':
+		case 'X':
+			fprintf(stderr, "SNMP support is not built-in\n");
+			usage();
+#endif
+			break;
+		case 'S':
+			if (descr_override) {
+				fprintf(stderr, "-S can only be used once\n");
+				usage();
+			}
+			descr_override = strdup(optarg);
+			break;
+		case 'P':
+			if (platform_override) {
+				fprintf(stderr, "-P can only be used once\n");
+				usage();
+			}
+			platform_override = strdup(optarg);
+			break;
+		case 'H':
+			smart = strtonum(optarg, 0,
+			    sizeof(filters) / sizeof(filters[0]), &errstr);
+			if (errstr) {
+				fprintf(stderr,
+				    "-H requires an int between 0 and %zu\n",
+				    sizeof(filters) / sizeof(filters[0]));
+				usage();
+			}
+			break;
+		case 'O':
+			if (config_file) {
+				fprintf(stderr, "-O can only be used once\n");
+				usage();
+			}
+			config_file = optarg;
+			break;
+		default:
+			found = 0;
+			for (i = 0; protos[i].mode != 0; i++) {
+				if (ch == protos[i].arg) {
+					found = 1;
+					protos[i].enabled++;
+				}
+			}
+			if (!found) usage();
+		}
+	}
+
+	if (version) {
+		version_display(stdout, "lldpd", version > 1);
+		exit(0);
+	}
+
+	if (ctlname == NULL) ctlname = LLDPD_CTL_SOCKET;
+
+	/* Set correct smart mode */
+	for (i = 0; (filters[i].a != -1) && (filters[i].a != smart); i++)
+		;
+	if (filters[i].a == -1) {
+		fprintf(stderr, "Incorrect mode for -H\n");
+		usage();
+	}
+	smart = filters[i].b;
+
+	log_init(use_syslog, debug, __progname);
+	tzset(); /* Get timezone info before chroot */
+	if (use_syslog && daemonize) {
+		/* So, we use syslog and we daemonize (or we are started by
+		 * systemd). No need to continue writing to stdout. */
+		int fd;
+		/* coverity[resource_leak]
+		   fd may be leaked if < 2, it's expected */
+		if ((fd = open("/dev/null", O_RDWR, 0)) != -1) {
+			dup2(fd, STDIN_FILENO);
+			dup2(fd, STDOUT_FILENO);
+			dup2(fd, STDERR_FILENO);
+			if (fd > 2) close(fd);
+		}
+	}
+	log_debug("main", "lldpd " PACKAGE_VERSION " starting...");
+	version_check();
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+	fatalx("main", "fuzzing enabled, unsafe for production");
+#endif
+
+	/* Grab uid and gid to use for priv sep */
+#ifdef ENABLE_PRIVSEP
+	if ((user = getpwnam(PRIVSEP_USER)) == NULL)
+		fatalx("main",
+		    "no " PRIVSEP_USER
+		    " user for privilege separation, please create it");
+	uid = user->pw_uid;
+	if ((group = getgrnam(PRIVSEP_GROUP)) == NULL)
+		fatalx("main",
+		    "no " PRIVSEP_GROUP
+		    " group for privilege separation, please create it");
+	gid = group->gr_gid;
+#endif
+
+	/* Create and setup socket */
+	int retry = 1;
+	log_debug("main", "creating control socket");
+	while ((ctl = ctl_create(ctlname)) == -1) {
+		if (retry-- && errno == EADDRINUSE) {
+			/* Check if a daemon is really listening */
+			int tfd;
+			log_info("main",
+			    "unable to create control socket because it already exists");
+			log_info("main", "check if another instance is running");
+			if ((tfd = ctl_connect(ctlname)) != -1) {
+				/* Another instance is running */
+				close(tfd);
+				log_warnx("main",
+				    "another instance is running, please stop it");
+				fatalx("main", "giving up");
+			} else if (errno == ECONNREFUSED) {
+				/* Nobody is listening */
+				log_info("main",
+				    "old control socket is present, clean it");
+				ctl_cleanup(ctlname);
+				continue;
+			}
+			log_warn("main",
+			    "cannot determine if another daemon is already running");
+			fatalx("main", "giving up");
+		}
+		log_warn("main", "unable to create control socket at %s", ctlname);
+		fatalx("main", "giving up");
+	}
+#ifdef ENABLE_PRIVSEP
+	if (chown(ctlname, uid, gid) == -1)
+		log_warn("main", "unable to chown control socket");
+	if (chmod(ctlname, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IWGRP | S_IXGRP) ==
+	    -1)
+		log_warn("main", "unable to chmod control socket");
+#endif
+
+	/* Create associated advisory lock file */
+	char *lockname = NULL;
+	int fd;
+	if (asprintf(&lockname, "%s.lock", ctlname) == -1)
+		fatal("main", "cannot build lock name");
+	if ((fd = open(lockname, O_CREAT | O_RDWR, 0000)) == -1)
+		fatal("main", "cannot create lock file for control socket");
+	close(fd);
+#ifdef ENABLE_PRIVSEP
+	if (chown(lockname, uid, gid) == -1)
+		log_warn("main", "unable to chown control socket lock");
+	if (chmod(lockname,
+		S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IWGRP | S_IXGRP) == -1)
+		log_warn("main", "unable to chmod control socket lock");
+#endif
+	free(lockname);
+
+	/* Disable SIGPIPE */
+	signal(SIGPIPE, SIG_IGN);
+
+	/* Disable SIGHUP, until handlers are installed */
+	signal(SIGHUP, SIG_IGN);
+
+	/* Daemonization, unless started by systemd or launchd or debug */
+#ifndef HOST_OS_OSX
+	if (!lldpd_started_by_systemd() && daemonize) {
+		int pid;
+		char *spid;
+		log_debug("main", "going into background");
+		if (daemon(0, 1) != 0) fatal("main", "failed to detach daemon");
+		if ((pid = open(pidfile, O_TRUNC | O_CREAT | O_WRONLY, 0666)) == -1)
+			fatal("main",
+			    "unable to open pid file " LLDPD_PID_FILE
+			    " (or the specified one)");
+		if (asprintf(&spid, "%d\n", getpid()) == -1)
+			fatal("main",
+			    "unable to create pid file " LLDPD_PID_FILE
+			    " (or the specified one)");
+		if (write(pid, spid, strlen(spid)) == -1)
+			fatal("main",
+			    "unable to write pid file " LLDPD_PID_FILE
+			    " (or the specified one)");
+		free(spid);
+		close(pid);
+	}
+#endif
+
+	/* Configuration with lldpcli */
+	if (lldpcli) {
+		if (!config_file) {
+			log_debug("main",
+			    "invoking lldpcli for default configuration locations");
+		} else {
+			log_debug("main",
+			    "invoking lldpcli for user supplied configuration location");
+		}
+		if (lldpd_configure(use_syslog, debug, lldpcli, ctlname, config_file) ==
+		    -1)
+			fatal("main", "unable to spawn lldpcli");
+	}
+
+	/* Try to read system information from /etc/os-release if possible.
+	   Fall back to lsb_release for compatibility. */
+	log_debug("main", "get OS/LSB release information");
+	lsb_release = lldpd_get_os_release();
+	if (!lsb_release) {
+		lsb_release = lldpd_get_lsb_release();
+	}
+
+	log_debug("main", "initialize privilege separation");
+#ifdef ENABLE_PRIVSEP
+	priv_init(PRIVSEP_CHROOT, ctl, uid, gid);
+#else
+	priv_init();
+#endif
+
+	/* Initialization of global configuration */
+	if ((cfg = (struct lldpd *)calloc(1, sizeof(struct lldpd))) == NULL)
+		fatal("main", NULL);
+
+	lldpd_alloc_default_local_port(cfg);
+	cfg->g_ctlname = ctlname;
+	cfg->g_ctl = ctl;
+	cfg->g_config.c_mgmt_pattern = mgmtp;
+	cfg->g_config.c_cid_pattern = cidp;
+	cfg->g_config.c_iface_pattern = interfaces;
+	cfg->g_config.c_smart = smart;
+	if (lldpcli) cfg->g_config.c_paused = 1;
+	cfg->g_config.c_receiveonly = receiveonly;
+	cfg->g_config.c_tx_interval = LLDPD_TX_INTERVAL * 1000;
+	cfg->g_config.c_tx_hold = LLDPD_TX_HOLD;
+	cfg->g_config.c_ttl = cfg->g_config.c_tx_interval * cfg->g_config.c_tx_hold;
+	cfg->g_config.c_ttl = (cfg->g_config.c_ttl + 999) / 1000;
+	cfg->g_config.c_max_neighbors = LLDPD_MAX_NEIGHBORS;
+#ifdef ENABLE_LLDPMED
+	cfg->g_config.c_enable_fast_start = enable_fast_start;
+	cfg->g_config.c_tx_fast_init = LLDPD_FAST_INIT;
+	cfg->g_config.c_tx_fast_interval = LLDPD_FAST_TX_INTERVAL;
+#endif
+#ifdef USE_SNMP
+	cfg->g_snmp = snmp;
+	cfg->g_snmp_agentx = agentx;
+#endif /* USE_SNMP */
+	cfg->g_config.c_bond_slave_src_mac_type =
+	    LLDP_BOND_SLAVE_SRC_MAC_TYPE_LOCALLY_ADMINISTERED;
+
+	/* Get ioctl socket */
+	log_debug("main", "get an ioctl socket");
+	if ((cfg->g_sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
+		fatal("main", "failed to get ioctl socket");
+
+	/* Description */
+	if (!(cfg->g_config.c_advertise_version = advertise_version) && lsb_release &&
+	    lsb_release[strlen(lsb_release) - 1] == '\n')
+		lsb_release[strlen(lsb_release) - 1] = '\0';
+	cfg->g_lsb_release = lsb_release;
+	if (descr_override) cfg->g_config.c_description = descr_override;
+
+	if (platform_override) cfg->g_config.c_platform = platform_override;
+
+	/* Set system capabilities */
+	log_debug("main", "set system capabilities");
+	if ((lchassis = (struct lldpd_chassis *)calloc(1,
+		 sizeof(struct lldpd_chassis))) == NULL)
+		fatal("localchassis", NULL);
+	cfg->g_config.c_cap_advertise = 1;
+	cfg->g_config.c_cap_override = 0;
+	lchassis->c_cap_available =
+	    LLDP_CAP_BRIDGE | LLDP_CAP_WLAN | LLDP_CAP_ROUTER | LLDP_CAP_STATION;
+	cfg->g_config.c_mgmt_advertise = 1;
+	TAILQ_INIT(&lchassis->c_mgmt);
+#ifdef ENABLE_LLDPMED
+	if (lldpmed > 0) {
+		if (lldpmed == LLDP_MED_CLASS_III)
+			lchassis->c_cap_available |= LLDP_CAP_TELEPHONE;
+		lchassis->c_med_type = lldpmed;
+		lchassis->c_med_cap_available = LLDP_MED_CAP_CAP | LLDP_MED_CAP_IV |
+		    LLDP_MED_CAP_LOCATION | LLDP_MED_CAP_POLICY | LLDP_MED_CAP_MDI_PSE |
+		    LLDP_MED_CAP_MDI_PD;
+		cfg->g_config.c_noinventory = noinventory;
+	} else
+		cfg->g_config.c_noinventory = 1;
+#endif
+
+	log_debug("main", "initialize protocols");
+	cfg->g_protocols = protos;
+	for (i = 0; protos[i].mode != 0; i++) {
+
+		/* With -ll, disable LLDP */
+		if (protos[i].mode == LLDPD_MODE_LLDP) protos[i].enabled %= 3;
+		/* With -ccc force CDPV2, enable CDPV1 */
+		if (protos[i].mode == LLDPD_MODE_CDPV1 && protos[i].enabled == 3) {
+			protos[i].enabled = 1;
+		}
+		/* With -cc force CDPV1, enable CDPV2 */
+		if (protos[i].mode == LLDPD_MODE_CDPV2 && protos[i].enabled == 2) {
+			protos[i].enabled = 1;
+		}
+
+		/* With -cccc disable CDPV1, enable CDPV2 */
+		if (protos[i].mode == LLDPD_MODE_CDPV1 && protos[i].enabled >= 4) {
+			protos[i].enabled = 0;
+		}
+
+		/* With -cccc disable CDPV1, enable CDPV2; -ccccc will force CDPv2 */
+		if (protos[i].mode == LLDPD_MODE_CDPV2 && protos[i].enabled == 4) {
+			protos[i].enabled = 1;
+		}
+
+		if (protos[i].enabled > 1)
+			log_info("main", "protocol %s enabled and forced",
+			    protos[i].name);
+		else if (protos[i].enabled)
+			log_info("main", "protocol %s enabled", protos[i].name);
+		else
+			log_info("main", "protocol %s disabled", protos[i].name);
+	}
+
+	TAILQ_INIT(&cfg->g_hardware);
+	TAILQ_INIT(&cfg->g_chassis);
+	TAILQ_INSERT_TAIL(&cfg->g_chassis, lchassis, c_entries);
+	lchassis->c_refcount++; /* We should always keep a reference to local chassis */
+
+	/* Main loop */
+	log_debug("main", "start main loop");
+	levent_loop(cfg);
+	lchassis->c_refcount--;
+	lldpd_exit(cfg);
+	free(cfg);
+
+	return (0);
+}
diff --git a/src/daemon/lldpd.h b/src/daemon/lldpd.h
new file mode 100644
index 0000000..2fc381b
--- /dev/null
+++ b/src/daemon/lldpd.h
@@ -0,0 +1,429 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _LLDPD_H
+#define _LLDPD_H
+
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#ifdef HAVE_VALGRIND_VALGRIND_H
+#  include <valgrind/valgrind.h>
+#else
+#  define RUNNING_ON_VALGRIND 0
+#endif
+
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <sys/queue.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <net/if_arp.h>
+#include <netinet/if_ether.h>
+#include <sys/un.h>
+
+#include "lldp-tlv.h"
+#if defined ENABLE_CDP || defined ENABLE_FDP
+#  include "protocols/cdp.h"
+#endif
+#ifdef ENABLE_SONMP
+#  include "protocols/sonmp.h"
+#endif
+#ifdef ENABLE_EDP
+#  include "protocols/edp.h"
+#endif
+
+#include "../compat/compat.h"
+#include "../marshal.h"
+#include "../log.h"
+#include "../ctl.h"
+#include "../lldpd-structs.h"
+
+/* We don't want to import event2/event.h. We only need those as
+   opaque structs. */
+struct event;
+struct event_base;
+
+#define PROCFS_SYS_NET "/proc/sys/net/"
+#define SYSFS_CLASS_NET "/sys/class/net/"
+#define SYSFS_CLASS_DMI "/sys/class/dmi/id/"
+#define LLDPD_TX_INTERVAL 30
+#define LLDPD_TX_HOLD 4
+#define LLDPD_TTL LLDPD_TX_INTERVAL *LLDPD_TX_HOLD
+#define LLDPD_TX_MSGDELAY 1
+#define LLDPD_MAX_NEIGHBORS 32
+#define LLDPD_FAST_TX_INTERVAL 1
+#define LLDPD_FAST_INIT 4
+
+#define USING_AGENTX_SUBAGENT_MODULE 1
+
+#define PROTO_SEND_SIG struct lldpd *, struct lldpd_hardware *
+#define PROTO_DECODE_SIG                                                         \
+  struct lldpd *, char *, int, struct lldpd_hardware *, struct lldpd_chassis **, \
+      struct lldpd_port **
+#define PROTO_GUESS_SIG char *, int
+
+#define ALIGNED_CAST(TYPE, ATTR) ((TYPE)(void *)(ATTR))
+
+struct protocol {
+	int mode;			 /* > 0 mode identifier (unique per protocol) */
+	int enabled;			 /* Is this protocol enabled? */
+	const char *name;		 /* Name of protocol */
+	char arg;			 /* Argument to enable this protocol */
+	int (*send)(PROTO_SEND_SIG);	 /* How to send a frame */
+	int (*decode)(PROTO_DECODE_SIG); /* How to decode a frame */
+	int (*guess)(PROTO_GUESS_SIG);	 /* Can be NULL, use MAC address in this case */
+	u_int8_t mac[3][ETHER_ADDR_LEN]; /* Destination MAC addresses used by this
+					    protocol */
+};
+
+#define SMART_HIDDEN(port) (port->p_hidden_in)
+
+struct lldpd;
+
+/* lldpd.c */
+struct lldpd_hardware *lldpd_get_hardware(struct lldpd *, char *, int);
+struct lldpd_hardware *lldpd_alloc_hardware(struct lldpd *, char *, int);
+void lldpd_hardware_cleanup(struct lldpd *, struct lldpd_hardware *);
+struct lldpd_mgmt *lldpd_alloc_mgmt(int family, void *addr, size_t addrsize,
+    u_int32_t iface);
+void lldpd_recv(struct lldpd *, struct lldpd_hardware *, int);
+void lldpd_send(struct lldpd_hardware *);
+void lldpd_loop(struct lldpd *);
+int lldpd_main(int, char **, char **);
+void lldpd_update_localports(struct lldpd *);
+void lldpd_update_localchassis(struct lldpd *);
+void lldpd_cleanup(struct lldpd *);
+
+/* frame.c */
+u_int16_t frame_checksum(const u_int8_t *, int, int);
+
+/* event.c */
+void levent_loop(struct lldpd *);
+void levent_shutdown(struct lldpd *);
+void levent_hardware_init(struct lldpd_hardware *);
+void levent_hardware_add_fd(struct lldpd_hardware *, int);
+void levent_hardware_release(struct lldpd_hardware *);
+void levent_ctl_notify(char *, int, struct lldpd_port *);
+void levent_send_now(struct lldpd *);
+void levent_update_now(struct lldpd *);
+int levent_iface_subscribe(struct lldpd *, int);
+void levent_schedule_pdu(struct lldpd_hardware *);
+void levent_schedule_cleanup(struct lldpd *);
+int levent_make_socket_nonblocking(int);
+int levent_make_socket_blocking(int);
+#ifdef HOST_OS_LINUX
+void levent_recv_error(int, const char *);
+#endif
+
+/* lldp.c */
+int lldp_send_shutdown(PROTO_SEND_SIG);
+int lldp_send(PROTO_SEND_SIG);
+int lldp_decode(PROTO_DECODE_SIG);
+
+/* cdp.c */
+#ifdef ENABLE_CDP
+int cdpv1_send(PROTO_SEND_SIG);
+int cdpv2_send(PROTO_SEND_SIG);
+int cdpv1_guess(PROTO_GUESS_SIG);
+int cdpv2_guess(PROTO_GUESS_SIG);
+#endif
+#if defined ENABLE_CDP || defined ENABLE_FDP
+int cdp_decode(PROTO_DECODE_SIG);
+#endif
+#ifdef ENABLE_FDP
+int fdp_send(PROTO_SEND_SIG);
+#endif
+
+#ifdef ENABLE_SONMP
+/* sonmp.c */
+int sonmp_send(PROTO_SEND_SIG);
+int sonmp_decode(PROTO_DECODE_SIG);
+#endif
+
+#ifdef ENABLE_EDP
+/* edp.c */
+int edp_send(PROTO_SEND_SIG);
+int edp_decode(PROTO_DECODE_SIG);
+#endif
+
+/* dmi.c */
+#ifdef ENABLE_LLDPMED
+char *dmi_hw(void);
+char *dmi_fw(void);
+char *dmi_sn(void);
+char *dmi_manuf(void);
+char *dmi_model(void);
+char *dmi_asset(void);
+#endif
+
+#ifdef USE_SNMP
+/* agent.c */
+void agent_shutdown(void);
+void agent_init(struct lldpd *, const char *);
+void agent_notify(struct lldpd_hardware *, int, struct lldpd_port *);
+#endif
+
+#ifdef ENABLE_PRIVSEP
+/* agent_priv.c */
+void agent_priv_register_domain(void);
+#endif
+
+/* client.c */
+int client_handle_client(struct lldpd *cfg,
+    ssize_t (*send)(void *, int, void *, size_t), void *, enum hmsg_type type,
+    void *buffer, size_t n, int *);
+
+/* priv.c */
+#ifdef ENABLE_PRIVSEP
+void priv_init(const char *, int, uid_t, gid_t);
+#else
+void priv_init(void);
+#endif
+void priv_wait(void);
+void priv_ctl_cleanup(const char *ctlname);
+char *priv_gethostname(void);
+#ifdef HOST_OS_LINUX
+int priv_open(const char *);
+void asroot_open(void);
+#endif
+int priv_iface_init(int, char *);
+int asroot_iface_init_os(int, char *, int *);
+int priv_iface_multicast(const char *, const u_int8_t *, int);
+int priv_iface_description(const char *, const char *);
+int asroot_iface_description_os(const char *, const char *);
+int priv_iface_promisc(const char *);
+int asroot_iface_promisc_os(const char *);
+int priv_snmp_socket(struct sockaddr_un *);
+
+enum priv_cmd {
+	PRIV_PING,
+	PRIV_DELETE_CTL_SOCKET,
+	PRIV_GET_HOSTNAME,
+	PRIV_OPEN,
+	PRIV_IFACE_INIT,
+	PRIV_IFACE_MULTICAST,
+	PRIV_IFACE_DESCRIPTION,
+	PRIV_IFACE_PROMISC,
+	PRIV_SNMP_SOCKET,
+};
+
+/* priv-seccomp.c */
+#if defined USE_SECCOMP && defined ENABLE_PRIVSEP
+int priv_seccomp_init(int, int);
+#endif
+
+/* privsep_io.c */
+enum priv_context { PRIV_PRIVILEGED, PRIV_UNPRIVILEGED };
+int may_read(enum priv_context, void *, size_t);
+void must_read(enum priv_context, void *, size_t);
+void must_write(enum priv_context, const void *, size_t);
+void priv_privileged_fd(int);
+void priv_unprivileged_fd(int);
+int priv_fd(enum priv_context);
+int receive_fd(enum priv_context);
+void send_fd(enum priv_context, int);
+
+/* interfaces-*.c */
+
+/* BPF filter to get revelant information from interfaces */
+/* LLDP: "ether proto 0x88cc and ether dst 01:80:c2:00:00:0e" */
+/* FDP: "ether dst 01:e0:52:cc:cc:cc" */
+/* CDP: "ether dst 01:00:0c:cc:cc:cc" */
+/* SONMP: "ether dst 01:00:81:00:01:00" */
+/* EDP: "ether dst 00:e0:2b:00:00:00" */
+/* For optimization purpose, we first check if the first bit of the
+   first byte is 1. if not, this can only be an EDP packet:
+
+   tcpdump -dd "(ether[0] & 1 = 1 and
+		 ((ether proto 0x88cc and (ether dst 01:80:c2:00:00:0e or
+					   ether dst 01:80:c2:00:00:03 or
+					   ether dst 01:80:c2:00:00:00)) or
+		  (ether dst 01:e0:52:cc:cc:cc) or
+		  (ether dst 01:00:0c:cc:cc:cc) or
+		  (ether dst 01:00:81:00:01:00))) or
+		(ether dst 00:e0:2b:00:00:00)"
+*/
+
+#ifndef ETH_P_LLDP
+#  define ETH_P_LLDP 0x88cc
+#endif
+#define LLDPD_FILTER_F                                                                 \
+  { 0x30, 0, 0, 0x00000000 }, { 0x54, 0, 0, 0x00000001 }, { 0x15, 0, 16, 0x00000001 }, \
+      { 0x28, 0, 0, 0x0000000c }, { 0x15, 0, 6, ETH_P_LLDP },                          \
+      { 0x20, 0, 0, 0x00000002 }, { 0x15, 2, 0, 0xc200000e },                          \
+      { 0x15, 1, 0, 0xc2000003 }, { 0x15, 0, 2, 0xc2000000 },                          \
+      { 0x28, 0, 0, 0x00000000 }, { 0x15, 12, 13, 0x00000180 },                        \
+      { 0x20, 0, 0, 0x00000002 }, { 0x15, 0, 2, 0x52cccccc },                          \
+      { 0x28, 0, 0, 0x00000000 }, { 0x15, 8, 9, 0x000001e0 },                          \
+      { 0x15, 1, 0, 0x0ccccccc }, { 0x15, 0, 2, 0x81000100 },                          \
+      { 0x28, 0, 0, 0x00000000 }, { 0x15, 4, 5, 0x00000100 },                          \
+      { 0x20, 0, 0, 0x00000002 }, { 0x15, 0, 3, 0x2b000000 },                          \
+      { 0x28, 0, 0, 0x00000000 }, { 0x15, 0, 1, 0x000000e0 },                          \
+      { 0x6, 0, 0, 0x00040000 },                                                       \
+  {                                                                                    \
+    0x6, 0, 0, 0x00000000                                                              \
+  }
+
+/* This function is responsible to refresh information about interfaces. It is
+ * OS specific but should be present for each OS. It can use the functions in
+ * `interfaces.c` as helper by providing a list of OS-independent interface
+ * devices. */
+void interfaces_update(struct lldpd *);
+
+/* interfaces.c */
+/* An interface cannot be both physical and (bridge or bond or vlan) */
+#define IFACE_PHYSICAL_T (1 << 0)    /* Physical interface */
+#define IFACE_BRIDGE_T (1 << 1)	     /* Bridge interface */
+#define IFACE_BOND_T (1 << 2)	     /* Bond interface */
+#define IFACE_VLAN_T (1 << 3)	     /* VLAN interface */
+#define IFACE_WIRELESS_T (1 << 4)    /* Wireless interface */
+#define IFACE_BRIDGE_VLAN_T (1 << 5) /* Bridge-aware VLAN interface */
+
+#define MAX_VLAN 4096
+#define VLAN_BITMAP_LEN (MAX_VLAN / 32)
+struct interfaces_device {
+	TAILQ_ENTRY(interfaces_device) next;
+	int ignore;			     /* Ignore this interface */
+	int index;			     /* Index */
+	char *name;			     /* Name */
+	char *alias;			     /* Alias */
+	char *address;			     /* MAC address */
+	char *driver;			     /* Driver */
+	int flags;			     /* Flags (IFF_*) */
+	int mtu;			     /* MTU */
+	int type;			     /* Type (see IFACE_*_T) */
+	uint32_t vlan_bmap[VLAN_BITMAP_LEN]; /* If a VLAN, what are the VLAN ID? */
+	int pvid;			     /* If a VLAN, what is the default VLAN? */
+	struct interfaces_device *lower; /* Lower interface (for a VLAN for example) */
+	struct interfaces_device *upper; /* Upper interface (for a bridge or a bond) */
+
+	/* The following are OS specific. Should be static (no free function) */
+#ifdef HOST_OS_LINUX
+	int lower_idx; /* Index to lower interface */
+	int upper_idx; /* Index to upper interface */
+#endif
+};
+struct interfaces_address {
+	TAILQ_ENTRY(interfaces_address) next;
+	int index;			 /* Index */
+	int flags;			 /* Flags */
+	struct sockaddr_storage address; /* Address */
+
+	/* The following are OS specific. */
+	/* Nothing yet. */
+};
+TAILQ_HEAD(interfaces_device_list, interfaces_device);
+TAILQ_HEAD(interfaces_address_list, interfaces_address);
+void interfaces_free_device(struct interfaces_device *);
+void interfaces_free_address(struct interfaces_address *);
+void interfaces_free_devices(struct interfaces_device_list *);
+void interfaces_free_addresses(struct interfaces_address_list *);
+struct interfaces_device *interfaces_indextointerface(struct interfaces_device_list *,
+    int);
+struct interfaces_device *interfaces_nametointerface(struct interfaces_device_list *,
+    const char *);
+
+void interfaces_helper_promisc(struct lldpd *, struct lldpd_hardware *);
+void interfaces_helper_allowlist(struct lldpd *, struct interfaces_device_list *);
+void interfaces_helper_chassis(struct lldpd *, struct interfaces_device_list *);
+void interfaces_helper_add_hardware(struct lldpd *, struct lldpd_hardware *);
+void interfaces_helper_physical(struct lldpd *, struct interfaces_device_list *,
+    struct lldpd_ops *, int (*init)(struct lldpd *, struct lldpd_hardware *));
+void interfaces_helper_port_name_desc(struct lldpd *, struct lldpd_hardware *,
+    struct interfaces_device *);
+void interfaces_helper_mgmt(struct lldpd *, struct interfaces_address_list *,
+    struct interfaces_device_list *);
+#ifdef ENABLE_DOT1
+void interfaces_helper_vlan(struct lldpd *, struct interfaces_device_list *);
+#endif
+int interfaces_send_helper(struct lldpd *, struct lldpd_hardware *, char *, size_t);
+
+void interfaces_setup_multicast(struct lldpd *, const char *, int);
+int interfaces_routing_enabled(struct lldpd *);
+void interfaces_cleanup(struct lldpd *);
+
+#ifdef HOST_OS_LINUX
+/* netlink.c */
+struct interfaces_device_list *netlink_get_interfaces(struct lldpd *);
+struct interfaces_address_list *netlink_get_addresses(struct lldpd *);
+void netlink_cleanup(struct lldpd *);
+struct lldpd_netlink;
+#endif
+
+#ifndef HOST_OS_LINUX
+/* interfaces-bpf.c */
+int ifbpf_phys_init(struct lldpd *, struct lldpd_hardware *);
+#endif
+
+/* pattern.c */
+enum pattern_match_result {
+	PATTERN_MATCH_DENIED,
+	PATTERN_MATCH_ALLOWED,
+	PATTERN_MATCH_ALLOWED_EXACT
+};
+enum pattern_match_result pattern_match(char *, char *, int);
+
+/* bitmap.c */
+void bitmap_set(uint32_t *bmap, uint16_t vlan_id);
+int bitmap_isempty(uint32_t *bmap);
+unsigned int bitmap_numbits(uint32_t *bmap);
+
+struct lldpd {
+	int g_sock;
+	struct event_base *g_base;
+#ifdef USE_SNMP
+#endif
+
+	struct lldpd_config g_config;
+
+	struct protocol *g_protocols;
+	int g_lastrid;
+	struct event *g_main_loop;
+	struct event *g_cleanup_timer;
+#ifdef USE_SNMP
+	int g_snmp;
+	struct event *g_snmp_timeout;
+	void *g_snmp_fds;
+	const char *g_snmp_agentx;
+#endif /* USE_SNMP */
+
+	/* Unix socket handling */
+	const char *g_ctlname;
+	int g_ctl;
+	struct event *g_iface_event; /* Triggered when there is an interface change */
+	struct event
+	    *g_iface_timer_event; /* Triggered one second after last interface change */
+	void (*g_iface_cb)(
+	    struct lldpd *); /* Called when there is an interface change */
+
+	char *g_lsb_release;
+
+#ifdef HOST_OS_LINUX
+	struct lldpd_netlink *g_netlink;
+#endif
+
+	struct lldpd_port *g_default_local_port;
+#define LOCAL_CHASSIS(cfg) ((struct lldpd_chassis *)(TAILQ_FIRST(&cfg->g_chassis)))
+	TAILQ_HEAD(, lldpd_chassis) g_chassis;
+	TAILQ_HEAD(, lldpd_hardware) g_hardware;
+};
+
+#endif /* _LLDPD_H */
diff --git a/src/daemon/lldpd.service.in b/src/daemon/lldpd.service.in
new file mode 100644
index 0000000..80288a5
--- /dev/null
+++ b/src/daemon/lldpd.service.in
@@ -0,0 +1,22 @@
+[Unit]
+Description=LLDP daemon
+Documentation=man:lldpd(8)
+After=network.target
+RequiresMountsFor=@PRIVSEP_CHROOT@
+
+[Service]
+Type=notify
+NotifyAccess=main
+EnvironmentFile=-/etc/default/lldpd
+EnvironmentFile=-/etc/sysconfig/lldpd
+ExecStart=@sbindir@/lldpd $DAEMON_ARGS $LLDPD_OPTIONS
+Restart=on-failure
+PrivateTmp=yes
+ProtectHome=yes
+ProtectKernelTunables=no
+ProtectControlGroups=yes
+ProtectKernelModules=yes
+#ProtectSystem=full
+
+[Install]
+WantedBy=multi-user.target
diff --git a/src/daemon/lldpd.sysusers.conf.in b/src/daemon/lldpd.sysusers.conf.in
new file mode 100644
index 0000000..7cbf50a
--- /dev/null
+++ b/src/daemon/lldpd.sysusers.conf.in
@@ -0,0 +1,6 @@
+# System user and group for lldpd
+# @PRIVSEP_USER@:@PRIVSEP_GROUP@
+
+# Type Name ID GECOS Home
+u @PRIVSEP_USER@ - "lldpd user" @PRIVSEP_CHROOT@
+m @PRIVSEP_USER@ @PRIVSEP_GROUP@
diff --git a/src/daemon/main.c b/src/daemon/main.c
new file mode 100644
index 0000000..c2d9297
--- /dev/null
+++ b/src/daemon/main.c
@@ -0,0 +1,17 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+#include "lldpd.h"
+
+/**
+ * @mainpage
+ *
+ * lldpd is an implementation of 802.1AB (aka LLDP). It provides an interface
+ * for third party clients to interact with it: querying neighbors, setting some
+ * TLV. This interface is included into a library whose API can be found in @ref
+ * liblldpctl
+ */
+
+int
+main(int argc, char **argv, char **envp)
+{
+	return lldpd_main(argc, argv, envp);
+}
diff --git a/src/daemon/netlink.c b/src/daemon/netlink.c
new file mode 100644
index 0000000..32fee76
--- /dev/null
+++ b/src/daemon/netlink.c
@@ -0,0 +1,993 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* Grabbing interfaces information with netlink only. */
+
+#include "lldpd.h"
+
+#include <errno.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <net/if_arp.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <linux/if_bridge.h>
+
+#define NETLINK_BUFFER 4096
+
+struct netlink_req {
+	struct nlmsghdr hdr;
+	struct ifinfomsg ifm;
+	/* attribute has to be NLMSG aligned */
+	struct rtattr ext_req __attribute__((aligned(NLMSG_ALIGNTO)));
+	__u32 ext_filter_mask;
+};
+
+struct lldpd_netlink {
+	int nl_socket_queries;
+	int nl_socket_changes;
+	int nl_socket_recv_size;
+	/* Cache */
+	struct interfaces_device_list *devices;
+	struct interfaces_address_list *addresses;
+};
+
+/**
+ * Set netlink socket buffer size.
+ *
+ * This returns the effective size on success. If the provided value is 0, this
+ * returns the current size instead. It returns -1 on system errors and -2 if
+ * the size was not changed appropriately (when reaching the max).
+ */
+static int
+netlink_socket_set_buffer_size(int s, int optname, const char *optname_str, int bufsize)
+{
+	socklen_t size = sizeof(int);
+	int got = 0;
+
+	if (bufsize > 0 &&
+	    setsockopt(s, SOL_SOCKET, optname, &bufsize, sizeof(bufsize)) < 0) {
+		log_warn("netlink", "unable to set %s to '%d'", optname_str, bufsize);
+		return -1;
+	}
+
+	/* Now read them back from kernel.
+	 * SO_SNDBUF & SO_RCVBUF are cap-ed at sysctl `net.core.rmem_max` &
+	 * `net.core.wmem_max`. This it the easiest [probably sanest too]
+	 * to validate that our socket buffers were set properly.
+	 */
+	if (getsockopt(s, SOL_SOCKET, optname, &got, &size) < 0) {
+		log_warn("netlink", "unable to get %s", optname_str);
+		return -1;
+	}
+	if (bufsize > 0 && got < bufsize) {
+		log_warnx("netlink",
+		    "tried to set %s to '%d' "
+		    "but got '%d'",
+		    optname_str, bufsize, got);
+		return -2;
+	}
+
+	return got;
+}
+
+/**
+ * Connect to netlink.
+ *
+ * Open a Netlink socket and connect to it.
+ *
+ * @param groups   Which groups we want to subscribe to
+ * @return 0 on success, -1 otherwise
+ */
+static int
+netlink_connect(struct lldpd *cfg, unsigned groups)
+{
+	int s1 = -1, s2 = -1;
+	struct sockaddr_nl local = { .nl_family = AF_NETLINK,
+		.nl_pid = 0,
+		.nl_groups = groups };
+
+	/* Open Netlink socket for subscriptions */
+	log_debug("netlink", "opening netlink sockets");
+	s1 = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+	if (s1 == -1) {
+		log_warn("netlink", "unable to open netlink socket for changes");
+		goto error;
+	}
+	if (NETLINK_SEND_BUFSIZE &&
+	    netlink_socket_set_buffer_size(s1, SO_SNDBUF, "SO_SNDBUF",
+		NETLINK_SEND_BUFSIZE) == -1) {
+		log_warn("netlink", "unable to set send buffer size");
+		goto error;
+	}
+
+	int rc = netlink_socket_set_buffer_size(s1, SO_RCVBUF, "SO_RCVBUF",
+	    NETLINK_RECEIVE_BUFSIZE);
+	switch (rc) {
+	case -1:
+		log_warn("netlink", "unable to set receiver buffer size");
+		goto error;
+	case -2:
+		/* Cannot set size */
+		cfg->g_netlink->nl_socket_recv_size = 0;
+		break;
+	default:
+		cfg->g_netlink->nl_socket_recv_size = rc;
+		break;
+	}
+	if (groups &&
+	    bind(s1, (struct sockaddr *)&local, sizeof(struct sockaddr_nl)) < 0) {
+		log_warn("netlink", "unable to bind netlink socket");
+		goto error;
+	}
+
+	/* Opening Netlink socket to for queries */
+	s2 = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+	if (s2 == -1) {
+		log_warn("netlink", "unable to open netlink socket for queries");
+		goto error;
+	}
+	cfg->g_netlink->nl_socket_changes = s1;
+	cfg->g_netlink->nl_socket_queries = s2;
+	return 0;
+error:
+	if (s1 != -1) close(s1);
+	if (s2 != -1) close(s2);
+	return -1;
+}
+
+/**
+ * Send a netlink message.
+ *
+ * The type of the message can be chosen as well the route family. The
+ * mesage will always be NLM_F_REQUEST | NLM_F_DUMP.
+ *
+ * @param s      the netlink socket
+ * @param type   the request type (eg RTM_GETLINK)
+ * @param family the rt family (eg AF_PACKET)
+ * @return 0 on success, -1 otherwise
+ */
+static int
+netlink_send(int s, int type, int family, int seq)
+{
+	struct netlink_req req = { .hdr = { .nlmsg_len =
+						NLMSG_LENGTH(sizeof(struct ifinfomsg)),
+				       .nlmsg_type = type,
+				       .nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP,
+				       .nlmsg_seq = seq,
+				       .nlmsg_pid = getpid() },
+		.ifm = { .ifi_family = family } };
+	struct iovec iov = { .iov_base = &req, .iov_len = req.hdr.nlmsg_len };
+	struct sockaddr_nl peer = { .nl_family = AF_NETLINK };
+	struct msghdr rtnl_msg = { .msg_iov = &iov,
+		.msg_iovlen = 1,
+		.msg_name = &peer,
+		.msg_namelen = sizeof(struct sockaddr_nl) };
+
+	if (family == AF_BRIDGE) {
+		unsigned int len = RTA_LENGTH(sizeof(__u32));
+		/* request bridge vlan attributes */
+		req.ext_req.rta_type = IFLA_EXT_MASK;
+		req.ext_req.rta_len = len;
+		req.ext_filter_mask = RTEXT_FILTER_BRVLAN;
+		req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) + RTA_ALIGN(len);
+		iov.iov_len = req.hdr.nlmsg_len;
+	}
+
+	/* Send netlink message. This is synchronous but we are guaranteed
+	 * to not block. */
+	log_debug("netlink", "sending netlink message");
+	if (sendmsg(s, (struct msghdr *)&rtnl_msg, 0) == -1) {
+		log_warn("netlink", "unable to send netlink message");
+		return -1;
+	}
+
+	return 0;
+}
+
+static void
+netlink_parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len)
+{
+	while (RTA_OK(rta, len)) {
+		if ((rta->rta_type <= max) && (!tb[rta->rta_type]))
+			tb[rta->rta_type] = rta;
+		rta = RTA_NEXT(rta, len);
+	}
+}
+
+/**
+ * Parse a `linkinfo` attributes.
+ *
+ * @param iff where to put the result
+ * @param rta linkinfo attribute
+ * @param len length of attributes
+ */
+static void
+netlink_parse_linkinfo(struct interfaces_device *iff, struct rtattr *rta, int len)
+{
+	struct rtattr *link_info_attrs[IFLA_INFO_MAX + 1] = {};
+	char *kind = NULL;
+	uint16_t vlan_id;
+
+	netlink_parse_rtattr(link_info_attrs, IFLA_INFO_MAX, rta, len);
+
+	if (link_info_attrs[IFLA_INFO_KIND]) {
+		kind = strdup(RTA_DATA(link_info_attrs[IFLA_INFO_KIND]));
+		if (kind) {
+			if (!strcmp(kind, "vlan")) {
+				log_debug("netlink", "interface %s is a VLAN",
+				    iff->name);
+				iff->type |= IFACE_VLAN_T;
+			} else if (!strcmp(kind, "bridge")) {
+				log_debug("netlink", "interface %s is a bridge",
+				    iff->name);
+				iff->type |= IFACE_BRIDGE_T;
+			} else if (!strcmp(kind, "bond")) {
+				log_debug("netlink", "interface %s is a bond",
+				    iff->name);
+				iff->type |= IFACE_BOND_T;
+			} else if (!strcmp(kind, "team")) {
+				log_debug("netlink", "interface %s is a team",
+				    iff->name);
+				iff->type |= IFACE_BOND_T;
+			}
+		}
+	}
+
+	if (kind && !strcmp(kind, "vlan") && link_info_attrs[IFLA_INFO_DATA]) {
+		struct rtattr *vlan_link_info_data_attrs[IFLA_VLAN_MAX + 1] = {};
+		netlink_parse_rtattr(vlan_link_info_data_attrs, IFLA_VLAN_MAX,
+		    RTA_DATA(link_info_attrs[IFLA_INFO_DATA]),
+		    RTA_PAYLOAD(link_info_attrs[IFLA_INFO_DATA]));
+
+		if (vlan_link_info_data_attrs[IFLA_VLAN_ID]) {
+			vlan_id = *(uint16_t *)RTA_DATA(
+			    vlan_link_info_data_attrs[IFLA_VLAN_ID]);
+			bitmap_set(iff->vlan_bmap, vlan_id);
+			log_debug("netlink", "VLAN ID for interface %s is %d",
+			    iff->name, vlan_id);
+		}
+	}
+
+	if (kind && !strcmp(kind, "bridge") && link_info_attrs[IFLA_INFO_DATA]) {
+		struct rtattr *bridge_link_info_data_attrs[IFLA_BR_MAX + 1] = {};
+		netlink_parse_rtattr(bridge_link_info_data_attrs, IFLA_BR_MAX,
+		    RTA_DATA(link_info_attrs[IFLA_INFO_DATA]),
+		    RTA_PAYLOAD(link_info_attrs[IFLA_INFO_DATA]));
+
+		if (bridge_link_info_data_attrs[IFLA_BR_VLAN_FILTERING] &&
+		    *(uint8_t *)RTA_DATA(
+			bridge_link_info_data_attrs[IFLA_BR_VLAN_FILTERING]) > 0) {
+			iff->type |= IFACE_BRIDGE_VLAN_T;
+		}
+	}
+
+	free(kind);
+}
+
+/**
+ * Parse a `afspec` attributes.
+ *
+ * @param iff where to put the result
+ * @param rta afspec attribute
+ * @param len length of attributes
+ */
+static void
+netlink_parse_afspec(struct interfaces_device *iff, struct rtattr *rta, int len)
+{
+	while (RTA_OK(rta, len)) {
+		struct bridge_vlan_info *vinfo;
+		switch (rta->rta_type) {
+		case IFLA_BRIDGE_VLAN_INFO:
+			vinfo = RTA_DATA(rta);
+			log_debug("netlink", "found VLAN %d on interface %s",
+			    vinfo->vid, iff->name ? iff->name : "(unknown)");
+
+			bitmap_set(iff->vlan_bmap, vinfo->vid);
+			if (vinfo->flags &
+			    (BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED))
+				iff->pvid = vinfo->vid;
+			break;
+		default:
+			log_debug("netlink",
+			    "unknown afspec attribute type %d for iface %s",
+			    rta->rta_type, iff->name ? iff->name : "(unknown)");
+			break;
+		}
+		rta = RTA_NEXT(rta, len);
+	}
+	/* All enbridged interfaces will have VLAN 1 by default, ignore it */
+	if (iff->vlan_bmap[0] == 2 && (bitmap_numbits(iff->vlan_bmap) == 1) &&
+	    iff->pvid == 1) {
+		log_debug("netlink",
+		    "found only default VLAN 1 on interface %s, removing",
+		    iff->name ? iff->name : "(unknown)");
+		iff->vlan_bmap[0] = iff->pvid = 0;
+	}
+}
+
+/**
+ * Parse a `link` netlink message.
+ *
+ * @param msg  message to be parsed
+ * @param iff  where to put the result
+ * return 0 if the interface is worth it, -1 otherwise
+ */
+static int
+netlink_parse_link(struct nlmsghdr *msg, struct interfaces_device *iff)
+{
+	struct ifinfomsg *ifi;
+	struct rtattr *attribute;
+	int len;
+	ifi = NLMSG_DATA(msg);
+	len = msg->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg));
+
+	if (ifi->ifi_type != ARPHRD_ETHER) {
+		log_debug("netlink", "skip non Ethernet interface at index %d",
+		    ifi->ifi_index);
+		return -1;
+	}
+
+	iff->index = ifi->ifi_index;
+	iff->flags = ifi->ifi_flags;
+	iff->lower_idx = -1;
+	iff->upper_idx = -1;
+
+	for (attribute = IFLA_RTA(ifi); RTA_OK(attribute, len);
+	     attribute = RTA_NEXT(attribute, len)) {
+		switch (attribute->rta_type) {
+		case IFLA_IFNAME:
+			/* Interface name */
+			iff->name = strdup(RTA_DATA(attribute));
+			break;
+		case IFLA_IFALIAS:
+			/* Interface alias */
+			iff->alias = strdup(RTA_DATA(attribute));
+			break;
+		case IFLA_ADDRESS:
+			/* Interface MAC address */
+			iff->address = malloc(RTA_PAYLOAD(attribute));
+			if (iff->address)
+				memcpy(iff->address, RTA_DATA(attribute),
+				    RTA_PAYLOAD(attribute));
+			break;
+		case IFLA_LINK:
+			/* Index of "lower" interface */
+			if (iff->lower_idx == -1) {
+				iff->lower_idx = *(int *)RTA_DATA(attribute);
+				log_debug("netlink", "attribute IFLA_LINK for %s: %d",
+				    iff->name ? iff->name : "(unknown)",
+				    iff->lower_idx);
+			} else {
+				log_debug("netlink",
+				    "attribute IFLA_LINK for %s: %d (ignored)",
+				    iff->name ? iff->name : "(unknown)",
+				    iff->lower_idx);
+			}
+			break;
+		case IFLA_LINK_NETNSID:
+			/* Is the lower interface into another namesapce? */
+			iff->lower_idx = -2;
+			log_debug("netlink",
+			    "attribute IFLA_LINK_NETNSID received for %s",
+			    iff->name ? iff->name : "(unknown)");
+			break;
+		case IFLA_MASTER:
+			/* Index of master interface */
+			iff->upper_idx = *(int *)RTA_DATA(attribute);
+			break;
+		case IFLA_MTU:
+			/* Maximum Transmission Unit */
+			iff->mtu = *(int *)RTA_DATA(attribute);
+			break;
+		case IFLA_LINKINFO:
+			netlink_parse_linkinfo(iff, RTA_DATA(attribute),
+			    RTA_PAYLOAD(attribute));
+			break;
+		case IFLA_AF_SPEC:
+			if (ifi->ifi_family != AF_BRIDGE) break;
+			netlink_parse_afspec(iff, RTA_DATA(attribute),
+			    RTA_PAYLOAD(attribute));
+			break;
+		default:
+			log_debug("netlink",
+			    "unhandled link attribute type %d for iface %s",
+			    attribute->rta_type, iff->name ? iff->name : "(unknown)");
+			break;
+		}
+	}
+	if (!iff->name || !iff->address) {
+		log_debug("netlink",
+		    "interface %d does not have a name or an address, skip",
+		    iff->index);
+		return -1;
+	}
+	if (iff->upper_idx == -1) {
+		/* No upper interface, we cannot be enslaved. We need to clear
+		 * the flag because the appropriate information may come later
+		 * and we don't want to miss it. */
+		iff->flags &= ~IFF_SLAVE;
+	}
+	if (iff->lower_idx == -2) iff->lower_idx = -1;
+
+	if (ifi->ifi_family == AF_BRIDGE && msg->nlmsg_type == RTM_DELLINK &&
+	    iff->upper_idx != -1) {
+		log_debug("netlink", "removal of %s from bridge %d", iff->name,
+		    iff->upper_idx);
+		msg->nlmsg_type = RTM_NEWLINK;
+		iff->upper_idx = -1;
+	}
+
+	log_debug("netlink", "parsed link %d (%s, flags: %d)", iff->index, iff->name,
+	    iff->flags);
+	return 0;
+}
+
+/**
+ * Parse a `address` netlink message.
+ *
+ * @param msg  message to be parsed
+ * @param ifa  where to put the result
+ * return 0 if the address is worth it, -1 otherwise
+ */
+static int
+netlink_parse_address(struct nlmsghdr *msg, struct interfaces_address *ifa)
+{
+	struct ifaddrmsg *ifi;
+	struct rtattr *attribute;
+	int len;
+	ifi = NLMSG_DATA(msg);
+	len = msg->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifaddrmsg));
+
+	ifa->index = ifi->ifa_index;
+	ifa->flags = ifi->ifa_flags;
+	switch (ifi->ifa_family) {
+	case AF_INET:
+	case AF_INET6:
+		break;
+	default:
+		log_debug("netlink", "got a non IP address on if %d (family: %d)",
+		    ifa->index, ifi->ifa_family);
+		return -1;
+	}
+
+	for (attribute = IFA_RTA(ifi); RTA_OK(attribute, len);
+	     attribute = RTA_NEXT(attribute, len)) {
+		switch (attribute->rta_type) {
+		case IFA_ADDRESS:
+			/* Address */
+			if (ifi->ifa_family == AF_INET) {
+				struct sockaddr_in ip;
+				memset(&ip, 0, sizeof(struct sockaddr_in));
+				ip.sin_family = AF_INET;
+				memcpy(&ip.sin_addr, RTA_DATA(attribute),
+				    sizeof(struct in_addr));
+				memcpy(&ifa->address, &ip, sizeof(struct sockaddr_in));
+			} else {
+				struct sockaddr_in6 ip6;
+				memset(&ip6, 0, sizeof(struct sockaddr_in6));
+				ip6.sin6_family = AF_INET6;
+				memcpy(&ip6.sin6_addr, RTA_DATA(attribute),
+				    sizeof(struct in6_addr));
+				memcpy(&ifa->address, &ip6,
+				    sizeof(struct sockaddr_in6));
+			}
+			break;
+		default:
+			log_debug("netlink",
+			    "unhandled address attribute type %d for iface %d",
+			    attribute->rta_type, ifa->index);
+			break;
+		}
+	}
+	if (ifa->address.ss_family == AF_UNSPEC) {
+		log_debug("netlink", "no IP for interface %d", ifa->index);
+		return -1;
+	}
+	return 0;
+}
+
+/**
+ * Merge an old interface with a new one.
+ *
+ * Some properties may be absent in the new interface that should be copied over
+ * from the old one.
+ */
+static void
+netlink_merge(struct interfaces_device *old, struct interfaces_device *new)
+{
+	if (new->alias == NULL) {
+		new->alias = old->alias;
+		old->alias = NULL;
+	}
+	if (new->address == NULL) {
+		new->address = old->address;
+		old->address = NULL;
+	}
+	if (new->mtu == 0) new->mtu = old->mtu;
+	if (new->type == 0) new->type = old->type;
+
+	if (bitmap_isempty(new->vlan_bmap) && new->type == IFACE_VLAN_T)
+		memcpy((void *)new->vlan_bmap, (void *)old->vlan_bmap,
+		    sizeof(uint32_t) * VLAN_BITMAP_LEN);
+
+	/* It's not possible for lower link to change */
+	new->lower_idx = old->lower_idx;
+}
+
+/**
+ * Receive netlink answer from the kernel.
+ *
+ * @param ifs  list to store interface list or NULL if we don't
+ * @param ifas list to store address list or NULL if we don't
+ * @return     0 on success, -1 on error
+ */
+static int
+netlink_recv(struct lldpd *cfg, int s, struct interfaces_device_list *ifs,
+    struct interfaces_address_list *ifas)
+{
+	int end = 0, ret = 0, flags, retry = 0;
+	struct iovec iov;
+	int link_update = 0;
+
+	struct interfaces_device *ifdold;
+	struct interfaces_device *ifdnew;
+	struct interfaces_address *ifaold;
+	struct interfaces_address *ifanew;
+	char addr[INET6_ADDRSTRLEN + 1];
+
+	iov.iov_len = NETLINK_BUFFER;
+	iov.iov_base = malloc(iov.iov_len);
+	if (!iov.iov_base) {
+		log_warn("netlink", "not enough memory");
+		return -1;
+	}
+
+	while (!end) {
+		ssize_t len;
+		struct nlmsghdr *msg;
+		struct sockaddr_nl peer = { .nl_family = AF_NETLINK };
+		struct msghdr rtnl_reply = { .msg_iov = &iov,
+			.msg_iovlen = 1,
+			.msg_name = &peer,
+			.msg_namelen = sizeof(struct sockaddr_nl) };
+		flags = MSG_PEEK | MSG_TRUNC;
+	retry:
+		len = recvmsg(s, &rtnl_reply, flags);
+		if (len == -1) {
+			if (errno == EAGAIN || errno == EWOULDBLOCK) {
+				if (retry++ == 0) {
+					levent_recv_error(s, "netlink socket");
+					goto retry;
+				}
+				log_warnx("netlink",
+				    "should have received something, but didn't");
+				ret = 0;
+				goto out;
+			}
+			int rsize = cfg->g_netlink->nl_socket_recv_size;
+			if (errno == ENOBUFS && rsize > 0 &&
+			    rsize < NETLINK_MAX_RECEIVE_BUFSIZE &&
+			    s == cfg->g_netlink->nl_socket_changes) {
+				/* Try to increase buffer size, only for the
+				 * socket used to receive changes */
+				rsize *= 2;
+				if (rsize > NETLINK_MAX_RECEIVE_BUFSIZE) {
+					rsize = NETLINK_MAX_RECEIVE_BUFSIZE;
+				}
+				int rc = netlink_socket_set_buffer_size(s, SO_RCVBUF,
+				    "SO_RCVBUF", rsize);
+				if (rc < 0)
+					cfg->g_netlink->nl_socket_recv_size = 0;
+				else
+					cfg->g_netlink->nl_socket_recv_size = rsize;
+				if (rc > 0 || rc == -2) {
+					log_info("netlink",
+					    "netlink receive buffer too small, retry with larger one (%d)",
+					    rsize);
+					flags = 0;
+					goto retry;
+				}
+			}
+			log_warn("netlink", "unable to receive netlink answer");
+			ret = -1;
+			goto out;
+		}
+		if (!len) {
+			ret = 0;
+			goto out;
+		}
+
+		if (iov.iov_len < len || (rtnl_reply.msg_flags & MSG_TRUNC)) {
+			void *tmp;
+
+			/* Provided buffer is not large enough, enlarge it
+			 * to size of len (which should be total length of the message)
+			 * and try again. */
+			iov.iov_len = len;
+			tmp = realloc(iov.iov_base, iov.iov_len);
+			if (!tmp) {
+				log_warn("netlink", "not enough memory");
+				ret = -1;
+				goto out;
+			}
+			log_debug("netlink", "enlarge message size to %zu bytes", len);
+			iov.iov_base = tmp;
+			flags = 0;
+			goto retry;
+		}
+
+		if (flags != 0) {
+			/* Buffer is big enough, do the actual reading */
+			flags = 0;
+			goto retry;
+		}
+
+		for (msg = (struct nlmsghdr *)(void *)(iov.iov_base);
+		     NLMSG_OK(msg, len); msg = NLMSG_NEXT(msg, len)) {
+			if (!(msg->nlmsg_flags & NLM_F_MULTI)) end = 1;
+			switch (msg->nlmsg_type) {
+			case NLMSG_DONE:
+				log_debug("netlink", "received done message");
+				end = 1;
+				break;
+			case RTM_NEWLINK:
+			case RTM_DELLINK:
+				if (!ifs) break;
+				log_debug("netlink", "received link information");
+				ifdnew = calloc(1, sizeof(struct interfaces_device));
+				if (ifdnew == NULL) {
+					log_warn("netlink",
+					    "not enough memory for another interface, give up what we have");
+					goto end;
+				}
+				if (netlink_parse_link(msg, ifdnew) == 0) {
+					/* We need to find if we already have this
+					 * interface */
+					TAILQ_FOREACH (ifdold, ifs, next) {
+						if (ifdold->index == ifdnew->index)
+							break;
+					}
+
+					if (msg->nlmsg_type == RTM_NEWLINK) {
+						if (ifdold == NULL) {
+							log_debug("netlink",
+							    "interface %s is new",
+							    ifdnew->name);
+							TAILQ_INSERT_TAIL(ifs, ifdnew,
+							    next);
+						} else {
+							log_debug("netlink",
+							    "interface %s/%s is updated",
+							    ifdold->name, ifdnew->name);
+							netlink_merge(ifdold, ifdnew);
+							TAILQ_INSERT_AFTER(ifs, ifdold,
+							    ifdnew, next);
+							TAILQ_REMOVE(ifs, ifdold, next);
+							interfaces_free_device(ifdold);
+						}
+					} else {
+						if (ifdold == NULL) {
+							log_warnx("netlink",
+							    "removal request for %s, but no knowledge of it",
+							    ifdnew->name);
+						} else {
+							log_debug("netlink",
+							    "interface %s is to be removed",
+							    ifdold->name);
+							TAILQ_REMOVE(ifs, ifdold, next);
+							interfaces_free_device(ifdold);
+						}
+						interfaces_free_device(ifdnew);
+					}
+					link_update = 1;
+				} else {
+					interfaces_free_device(ifdnew);
+				}
+				break;
+			case RTM_NEWADDR:
+			case RTM_DELADDR:
+				if (!ifas) break;
+				log_debug("netlink", "received address information");
+				ifanew = calloc(1, sizeof(struct interfaces_address));
+				if (ifanew == NULL) {
+					log_warn("netlink",
+					    "not enough memory for another address, give what we have");
+					goto end;
+				}
+				if (netlink_parse_address(msg, ifanew) == 0) {
+					if (ifanew->address.ss_family == AF_INET6 &&
+					    ifanew->flags & IFA_F_TEMPORARY) {
+						interfaces_free_address(ifanew);
+						break;
+					}
+					TAILQ_FOREACH (ifaold, ifas, next) {
+						if ((ifaold->index == ifanew->index) &&
+						    !memcmp(&ifaold->address,
+							&ifanew->address,
+							sizeof(ifaold->address)))
+							break;
+					}
+					if (getnameinfo(
+						(struct sockaddr *)&ifanew->address,
+						sizeof(ifanew->address), addr,
+						sizeof(addr), NULL, 0,
+						NI_NUMERICHOST) != 0) {
+						strlcpy(addr, "(unknown)",
+						    sizeof(addr));
+					}
+
+					if (msg->nlmsg_type == RTM_NEWADDR) {
+						if (ifaold == NULL) {
+							log_debug("netlink",
+							    "new address %s%%%d", addr,
+							    ifanew->index);
+							TAILQ_INSERT_TAIL(ifas, ifanew,
+							    next);
+						} else {
+							log_debug("netlink",
+							    "updated address %s%%%d",
+							    addr, ifaold->index);
+							TAILQ_INSERT_AFTER(ifas, ifaold,
+							    ifanew, next);
+							TAILQ_REMOVE(ifas, ifaold,
+							    next);
+							interfaces_free_address(ifaold);
+						}
+					} else {
+						if (ifaold == NULL) {
+							log_info("netlink",
+							    "removal request for address of %s%%%d, but no knowledge of it",
+							    addr, ifanew->index);
+						} else {
+							log_debug("netlink",
+							    "address %s%%%d is to be removed",
+							    addr, ifaold->index);
+							TAILQ_REMOVE(ifas, ifaold,
+							    next);
+							interfaces_free_address(ifaold);
+						}
+						interfaces_free_address(ifanew);
+					}
+				} else {
+					interfaces_free_address(ifanew);
+				}
+				break;
+			default:
+				log_debug("netlink",
+				    "received unhandled message type %d (len: %d)",
+				    msg->nlmsg_type, msg->nlmsg_len);
+			}
+		}
+	}
+end:
+	if (link_update) {
+		/* Fill out lower/upper */
+		struct interfaces_device *iface1, *iface2;
+		TAILQ_FOREACH (iface1, ifs, next) {
+			if (iface1->upper_idx != -1 &&
+			    iface1->upper_idx != iface1->index) {
+				TAILQ_FOREACH (iface2, ifs, next) {
+					if (iface1->upper_idx == iface2->index) {
+						log_debug("netlink",
+						    "upper interface for %s is %s",
+						    iface1->name, iface2->name);
+						iface1->upper = iface2;
+						break;
+					}
+				}
+				if (iface2 == NULL) iface1->upper = NULL;
+			} else {
+				iface1->upper = NULL;
+			}
+			if (iface1->lower_idx != -1 &&
+			    iface1->lower_idx != iface1->index) {
+				TAILQ_FOREACH (iface2, ifs, next) {
+					if (iface1->lower_idx == iface2->index) {
+						/* Workaround a bug introduced
+						 * in Linux 4.1: a pair of veth
+						 * will be lower interface of
+						 * each other. Do not modify
+						 * index as if one of them is
+						 * updated, we will loose the
+						 * information about the
+						 * loop. */
+						if (iface2->lower_idx ==
+						    iface1->index) {
+							iface1->lower = NULL;
+							log_debug("netlink",
+							    "link loop detected between %s(%d) and %s(%d)",
+							    iface1->name, iface1->index,
+							    iface2->name,
+							    iface2->index);
+						} else {
+							log_debug("netlink",
+							    "lower interface for %s is %s",
+							    iface1->name, iface2->name);
+							iface1->lower = iface2;
+						}
+						break;
+					}
+				}
+			} else {
+				iface1->lower = NULL;
+			}
+		}
+	}
+
+out:
+	free(iov.iov_base);
+	return ret;
+}
+
+static int
+netlink_group_mask(int group)
+{
+	return group ? (1 << (group - 1)) : 0;
+}
+
+/**
+ * Subscribe to link changes.
+ *
+ * @return 0 on success, -1 otherwise
+ */
+static int
+netlink_subscribe_changes(struct lldpd *cfg)
+{
+	unsigned int groups;
+
+	log_debug("netlink", "listening on interface changes");
+
+	groups = netlink_group_mask(RTNLGRP_LINK) |
+	    netlink_group_mask(RTNLGRP_IPV4_IFADDR) |
+	    netlink_group_mask(RTNLGRP_IPV6_IFADDR);
+
+	return netlink_connect(cfg, groups);
+}
+
+/**
+ * Receive changes from netlink */
+static void
+netlink_change_cb(struct lldpd *cfg)
+{
+	if (cfg->g_netlink == NULL) return;
+	netlink_recv(cfg, cfg->g_netlink->nl_socket_changes, cfg->g_netlink->devices,
+	    cfg->g_netlink->addresses);
+}
+
+/**
+ * Initialize netlink subsystem.
+ *
+ * This can be called several times but will have effect only the first time.
+ *
+ * @return 0 on success, -1 otherwise
+ */
+static int
+netlink_initialize(struct lldpd *cfg)
+{
+#ifdef ENABLE_DOT1
+	struct interfaces_device *iff;
+#endif
+
+	if (cfg->g_netlink) return 0;
+
+	log_debug("netlink", "initialize netlink subsystem");
+	if ((cfg->g_netlink = calloc(sizeof(struct lldpd_netlink), 1)) == NULL) {
+		log_warn("netlink", "unable to allocate memory for netlink subsystem");
+		goto end;
+	}
+
+	/* Connect to netlink (by requesting to get notified on updates) and
+	 * request updated information right now */
+	if (netlink_subscribe_changes(cfg) == -1) goto end;
+
+	struct interfaces_address_list *ifaddrs = cfg->g_netlink->addresses =
+	    malloc(sizeof(struct interfaces_address_list));
+	if (ifaddrs == NULL) {
+		log_warn("netlink", "not enough memory for address list");
+		goto end;
+	}
+	TAILQ_INIT(ifaddrs);
+
+	struct interfaces_device_list *ifs = cfg->g_netlink->devices =
+	    malloc(sizeof(struct interfaces_device_list));
+	if (ifs == NULL) {
+		log_warn("netlink", "not enough memory for interface list");
+		goto end;
+	}
+	TAILQ_INIT(ifs);
+
+	if (netlink_send(cfg->g_netlink->nl_socket_queries, RTM_GETADDR, AF_UNSPEC,
+		1) == -1)
+		goto end;
+	netlink_recv(cfg, cfg->g_netlink->nl_socket_queries, NULL, ifaddrs);
+	if (netlink_send(cfg->g_netlink->nl_socket_queries, RTM_GETLINK, AF_PACKET,
+		2) == -1)
+		goto end;
+	netlink_recv(cfg, cfg->g_netlink->nl_socket_queries, ifs, NULL);
+#ifdef ENABLE_DOT1
+	/* If we have a bridge, search for VLAN-aware bridges */
+	TAILQ_FOREACH (iff, ifs, next) {
+		if (iff->type & IFACE_BRIDGE_T) {
+			log_debug("netlink",
+			    "interface %s is a bridge, check for VLANs", iff->name);
+			if (netlink_send(cfg->g_netlink->nl_socket_queries, RTM_GETLINK,
+				AF_BRIDGE, 3) == -1)
+				goto end;
+			netlink_recv(cfg, cfg->g_netlink->nl_socket_queries, ifs, NULL);
+			break;
+		}
+	}
+#endif
+
+	/* Listen to any future change */
+	cfg->g_iface_cb = netlink_change_cb;
+	if (levent_iface_subscribe(cfg, cfg->g_netlink->nl_socket_changes) == -1) {
+		goto end;
+	}
+
+	return 0;
+end:
+	netlink_cleanup(cfg);
+	return -1;
+}
+
+/**
+ * Cleanup netlink subsystem.
+ */
+void
+netlink_cleanup(struct lldpd *cfg)
+{
+	if (cfg->g_netlink == NULL) return;
+	if (cfg->g_netlink->nl_socket_changes != -1)
+		close(cfg->g_netlink->nl_socket_changes);
+	if (cfg->g_netlink->nl_socket_queries != -1)
+		close(cfg->g_netlink->nl_socket_queries);
+	interfaces_free_devices(cfg->g_netlink->devices);
+	interfaces_free_addresses(cfg->g_netlink->addresses);
+
+	free(cfg->g_netlink);
+	cfg->g_netlink = NULL;
+}
+
+/**
+ * Receive the list of interfaces.
+ *
+ * @return a list of interfaces.
+ */
+struct interfaces_device_list *
+netlink_get_interfaces(struct lldpd *cfg)
+{
+	if (netlink_initialize(cfg) == -1) return NULL;
+	struct interfaces_device *ifd;
+	TAILQ_FOREACH (ifd, cfg->g_netlink->devices, next) {
+		ifd->ignore = 0;
+	}
+	return cfg->g_netlink->devices;
+}
+
+/**
+ * Receive the list of addresses.
+ *
+ * @return a list of addresses.
+ */
+struct interfaces_address_list *
+netlink_get_addresses(struct lldpd *cfg)
+{
+	if (netlink_initialize(cfg) == -1) return NULL;
+	return cfg->g_netlink->addresses;
+}
diff --git a/src/daemon/pattern.c b/src/daemon/pattern.c
new file mode 100644
index 0000000..0f9885d
--- /dev/null
+++ b/src/daemon/pattern.c
@@ -0,0 +1,80 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#include <string.h>
+#include <fnmatch.h>
+
+/**
+ * Match a list of patterns.
+ *
+ * @param string   String to match against the list of patterns
+ * @param patterns List of comma separated patterns. A pattern may
+ *                 begin by `!` to negate it. In this case, it is
+ *                 denied. A pattern may begin with `!!`. In this
+ *                 case, it is allowed back. Each pattern will then be
+ *                 matched against `fnmatch()` function.
+ * @param found    Value to return if the pattern isn't found. Should be either
+ *                 PATTERN_MATCH_DENIED or PATTERN_MACTH_DENIED.
+ *
+ * If a pattern is found matching and denied at the same time, it
+ * will be denied. If it is both allowed and denied, it
+ * will be allowed.
+ *
+ * @return PATTERN_MATCH_DENIED if the string matches a denied pattern which is not
+ *         allowed or if the pattern wasn't found and `found` was set to
+ *         PATTERN_MATCH_DENIED. Otherwise, return PATTERN_MATCH_ALLOWED unless the
+ *         interface match is exact, in this case return PATTERN_MATCH_ALLOWED_EXACT.
+ */
+enum pattern_match_result
+pattern_match(char *string, char *patterns, int found)
+{
+	char *pattern;
+	int denied = 0;
+	found = found ? PATTERN_MATCH_ALLOWED : PATTERN_MATCH_DENIED;
+
+	if ((patterns = strdup(patterns)) == NULL) {
+		log_warnx("interfaces", "unable to allocate memory");
+		return PATTERN_MATCH_DENIED;
+	}
+
+	for (pattern = strtok(patterns, ","); pattern != NULL;
+	     pattern = strtok(NULL, ",")) {
+		if ((pattern[0] == '!') && (pattern[1] == '!') &&
+		    (fnmatch(pattern + 2, string, 0) == 0)) {
+			/* Allowed. No need to search further. */
+			found = (strcmp(pattern + 2, string)) ?
+			    PATTERN_MATCH_ALLOWED :
+			    PATTERN_MATCH_ALLOWED_EXACT;
+			break;
+		}
+		if ((pattern[0] == '!') && (fnmatch(pattern + 1, string, 0) == 0)) {
+			denied = 1;
+			found = PATTERN_MATCH_DENIED;
+		} else if (!denied && fnmatch(pattern, string, 0) == 0) {
+			if (!strcmp(pattern, string)) {
+				found = PATTERN_MATCH_ALLOWED_EXACT;
+			} else if (found < 2) {
+				found = PATTERN_MATCH_ALLOWED;
+			}
+		}
+	}
+
+	free(patterns);
+	return found;
+}
diff --git a/src/daemon/priv-bsd.c b/src/daemon/priv-bsd.c
new file mode 100644
index 0000000..61f332a
--- /dev/null
+++ b/src/daemon/priv-bsd.c
@@ -0,0 +1,202 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#include <unistd.h>
+#include <net/bpf.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+
+int
+asroot_iface_init_os(int ifindex, char *name, int *fd)
+{
+	int enable, required, rc;
+	struct bpf_insn filter[] = { LLDPD_FILTER_F };
+	struct ifreq ifr = { .ifr_name = {} };
+	struct bpf_program fprog = { .bf_insns = filter,
+		.bf_len = sizeof(filter) / sizeof(struct bpf_insn) };
+
+#ifndef HOST_OS_SOLARIS
+	int n = 0;
+	char dev[20];
+	do {
+		snprintf(dev, sizeof(dev), "/dev/bpf%d", n++);
+		*fd = open(dev, O_RDWR);
+	} while (*fd < 0 && errno == EBUSY);
+#else
+	*fd = open("/dev/bpf", O_RDWR);
+#endif
+	if (*fd < 0) {
+		rc = errno;
+		log_warn("privsep", "unable to find a free BPF");
+		return rc;
+	}
+
+	/* Set buffer size */
+	required = ETHER_MAX_LEN + BPF_WORDALIGN(sizeof(struct bpf_hdr));
+	if (ioctl(*fd, BIOCSBLEN, (caddr_t)&required) < 0) {
+		rc = errno;
+		log_warn("privsep", "unable to set receive buffer size for BPF on %s",
+		    name);
+		return rc;
+	}
+
+	/* Bind the interface to BPF device */
+	strlcpy(ifr.ifr_name, name, IFNAMSIZ);
+	if (ioctl(*fd, BIOCSETIF, (caddr_t)&ifr) < 0) {
+		rc = errno;
+		log_warn("privsep", "failed to bind interface %s to BPF", name);
+		return rc;
+	}
+
+	/* Disable buffering */
+	enable = 1;
+	if (ioctl(*fd, BIOCIMMEDIATE, (caddr_t)&enable) < 0) {
+		rc = errno;
+		log_warn("privsep", "unable to disable buffering for %s", name);
+		return rc;
+	}
+
+	/* Let us write the MAC address (raw packet mode) */
+	enable = 1;
+	if (ioctl(*fd, BIOCSHDRCMPLT, (caddr_t)&enable) < 0) {
+		rc = errno;
+		log_warn("privsep", "unable to set the `header complete` flag for %s",
+		    name);
+		return rc;
+	}
+
+	/* Don't see sent packets */
+#ifdef HOST_OS_OPENBSD
+	enable = BPF_DIRECTION_OUT;
+	if (ioctl(*fd, BIOCSDIRFILT, (caddr_t)&enable) < 0)
+#else
+	enable = 0;
+	if (ioctl(*fd, BIOCSSEESENT, (caddr_t)&enable) < 0)
+#endif
+	{
+		rc = errno;
+		log_warn("privsep",
+		    "unable to set packet direction for BPF filter on %s", name);
+		return rc;
+	}
+
+	/* Install read filter */
+	if (ioctl(*fd, BIOCSETF, (caddr_t)&fprog) < 0) {
+		rc = errno;
+		log_warn("privsep", "unable to setup BPF filter for %s", name);
+		return rc;
+	}
+#ifdef BIOCSETWF
+	/* Install write filter (optional) */
+	if (ioctl(*fd, BIOCSETWF, (caddr_t)&fprog) < 0) {
+		rc = errno;
+		log_info("privsep", "unable to setup write BPF filter for %s", name);
+		return rc;
+	}
+#endif
+
+#ifdef BIOCLOCK
+	/* Lock interface, but first make it non blocking since we cannot do
+	 * this later */
+	levent_make_socket_nonblocking(*fd);
+	if (ioctl(*fd, BIOCLOCK, (caddr_t)&enable) < 0) {
+		rc = errno;
+		log_info("privsep", "unable to lock BPF interface %s", name);
+		return rc;
+	}
+#endif
+	return 0;
+}
+
+int
+asroot_iface_description_os(const char *name, const char *description)
+{
+#ifdef IFDESCRSIZE
+#  if defined HOST_OS_FREEBSD || defined HOST_OS_OPENBSD
+	char descr[IFDESCRSIZE];
+	int rc, sock = -1;
+#    if defined HOST_OS_FREEBSD
+	struct ifreq ifr = { .ifr_buffer = { .buffer = descr, .length = IFDESCRSIZE } };
+#    else
+	struct ifreq ifr = { .ifr_data = (caddr_t)descr };
+#    endif
+	strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
+	if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == 1) {
+		rc = errno;
+		log_warnx("privsep", "unable to open inet socket");
+		return rc;
+	}
+	if (strlen(description) == 0) {
+		/* No neighbor, try to append "was" to the current description */
+		if (ioctl(sock, SIOCGIFDESCR, (caddr_t)&ifr) < 0) {
+			rc = errno;
+			log_warnx("privsep", "unable to get description of %s", name);
+			close(sock);
+			return rc;
+		}
+		if (strncmp(descr, "lldpd: ", 7) == 0) {
+			if (strncmp(descr + 7, "was ", 4) == 0) {
+				/* Already has an old neighbor */
+				close(sock);
+				return 0;
+			} else {
+				/* Append was */
+				memmove(descr + 11, descr + 7, sizeof(descr) - 11);
+				memcpy(descr, "lldpd: was ", 11);
+			}
+		} else {
+			/* No description, no neighbor */
+			strlcpy(descr, "lldpd: no neighbor", sizeof(descr));
+		}
+	} else
+		snprintf(descr, sizeof(descr), "lldpd: connected to %s", description);
+#    if defined HOST_OS_FREEBSD
+	ift.ifr_buffer.length = strlen(descr);
+#    endif
+	if (ioctl(sock, SIOCSIFDESCR, (caddr_t)&ifr) < 0) {
+		rc = errno;
+		log_warnx("privsep", "unable to set description of %s", name);
+		close(sock);
+		return rc;
+	}
+	close(sock);
+	return 0;
+#  endif
+#endif /* IFDESCRSIZE */
+	static int once = 0;
+	if (!once) {
+		log_warnx("privsep", "cannot set interface description for this OS");
+		once = 1;
+	}
+	return 0;
+}
+
+int
+asroot_iface_promisc_os(const char *name)
+{
+	/* The promiscuous mode can be set when setting BPF
+	   (BIOCPROMISC). Unfortunately, the interface is locked down and we
+	   cannot change that without reopening a new socket. Let's do nothing
+	   for now. */
+	return 0;
+}
diff --git a/src/daemon/priv-linux.c b/src/daemon/priv-linux.c
new file mode 100644
index 0000000..9a6f90a
--- /dev/null
+++ b/src/daemon/priv-linux.c
@@ -0,0 +1,337 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+
+#include <unistd.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <limits.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <regex.h>
+#include <sys/ioctl.h>
+#include <netpacket/packet.h> /* For sockaddr_ll */
+#if defined(__clang__)
+#  pragma clang diagnostic push
+#  pragma clang diagnostic ignored "-Wdocumentation"
+#endif
+#include <linux/filter.h> /* For BPF filtering */
+#include <linux/sockios.h>
+#include <linux/if_ether.h>
+#include <linux/ethtool.h>
+#if defined(__clang__)
+#  pragma clang diagnostic pop
+#endif
+
+/* Defined in linux/pkt_sched.h */
+#define TC_PRIO_CONTROL 7
+/* Defined in sysfs/libsysfs.h */
+#define SYSFS_PATH_MAX 256
+
+/* Proxy for open */
+int
+priv_open(const char *file)
+{
+	int len, rc;
+	enum priv_cmd cmd = PRIV_OPEN;
+	must_write(PRIV_UNPRIVILEGED, &cmd, sizeof(enum priv_cmd));
+	len = strlen(file);
+	must_write(PRIV_UNPRIVILEGED, &len, sizeof(int));
+	must_write(PRIV_UNPRIVILEGED, file, len);
+	priv_wait();
+	must_read(PRIV_UNPRIVILEGED, &rc, sizeof(int));
+	if (rc == -1) return rc;
+	return receive_fd(PRIV_UNPRIVILEGED);
+}
+
+void
+asroot_open()
+{
+	const char *authorized[] = { PROCFS_SYS_NET "ipv4/ip_forward",
+		PROCFS_SYS_NET "ipv6/conf/all/forwarding",
+		"/proc/net/bonding/[^.][^/]*", "/proc/self/net/bonding/[^.][^/]*",
+#ifdef ENABLE_OLDIES
+		SYSFS_CLASS_NET "[^.][^/]*/brforward",
+		SYSFS_CLASS_NET "[^.][^/]*/brport",
+		SYSFS_CLASS_NET "[^.][^/]*/brif/[^.][^/]*/port_no",
+#endif
+		SYSFS_CLASS_DMI "product_version", SYSFS_CLASS_DMI "product_serial",
+		SYSFS_CLASS_DMI "product_name", SYSFS_CLASS_DMI "bios_version",
+		SYSFS_CLASS_DMI "sys_vendor", SYSFS_CLASS_DMI "chassis_asset_tag",
+		NULL };
+	const char **f;
+	char *file;
+	int fd, len, rc;
+	regex_t preg;
+
+	must_read(PRIV_PRIVILEGED, &len, sizeof(len));
+	if (len < 0 || len > PATH_MAX) fatalx("privsep", "too large value requested");
+	if ((file = (char *)malloc(len + 1)) == NULL) fatal("privsep", NULL);
+	must_read(PRIV_PRIVILEGED, file, len);
+	file[len] = '\0';
+
+	for (f = authorized; *f != NULL; f++) {
+		if (regcomp(&preg, *f, REG_NOSUB) != 0) /* Should not happen */
+			fatal("privsep", "unable to compile a regex");
+		if (regexec(&preg, file, 0, NULL, 0) == 0) {
+			regfree(&preg);
+			break;
+		}
+		regfree(&preg);
+	}
+	if (*f == NULL) {
+		log_warnx("privsep", "not authorized to open %s", file);
+		rc = -1;
+		must_write(PRIV_PRIVILEGED, &rc, sizeof(int));
+		free(file);
+		return;
+	}
+	if ((fd = open(file, O_RDONLY)) == -1) {
+		rc = -1;
+		must_write(PRIV_PRIVILEGED, &rc, sizeof(int));
+		free(file);
+		return;
+	}
+	free(file);
+	must_write(PRIV_PRIVILEGED, &fd, sizeof(int));
+	send_fd(PRIV_PRIVILEGED, fd);
+	close(fd);
+}
+
+/* Quirks needed by some additional interfaces. Currently, this is limited to
+ * disabling LLDP firmware for i40e. */
+static void
+asroot_iface_init_quirks(int ifindex, char *name)
+{
+	int s = -1;
+	int fd = -1;
+
+	/* Check driver. */
+	struct ethtool_drvinfo ethc = { .cmd = ETHTOOL_GDRVINFO };
+	struct ifreq ifr = { .ifr_data = (caddr_t)&ethc };
+	if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
+		log_warn("privsep", "unable to open a socket");
+		goto end;
+	}
+	strlcpy(ifr.ifr_name, name, IFNAMSIZ);
+	if (ioctl(s, SIOCETHTOOL, &ifr) != 0 ||
+	    strncmp("i40e", ethc.driver, sizeof(ethc.driver))) {
+		/* Not i40e */
+		goto end;
+	}
+	log_info("interfaces",
+	    "i40e driver detected for %s, disabling LLDP in firmware", name);
+
+	/* We assume debugfs is mounted. Otherwise, we would need to check if it
+	 * is mounted, then unshare a new mount namespace, mount it, issues the
+	 * command, leave the namespace. Let's see if there is such a need. */
+
+	/* Alternative is to use ethtool (ethtool --set-priv-flags ens5f0
+	 * disable-fw-lldp on). However, this requires a recent firmware (from
+	 * i40e_ethtool.c):
+	 *
+	 * If the driver detected FW LLDP was disabled on init, this flag could
+	 * be set, however we do not support _changing_ the flag:
+	 * - on XL710 if NPAR is enabled or FW API version < 1.7
+	 * - on X722 with FW API version < 1.6
+	 */
+
+	char command[] = "lldp stop";
+	char sysfs_path[SYSFS_PATH_MAX + 1];
+	if (snprintf(sysfs_path, SYSFS_PATH_MAX, "/sys/kernel/debug/i40e/%.*s/command",
+		(int)sizeof(ethc.bus_info), ethc.bus_info) >= SYSFS_PATH_MAX) {
+		log_warnx("interfaces", "path truncated");
+		goto end;
+	}
+	if ((fd = open(sysfs_path, O_WRONLY)) == -1) {
+		if (errno == ENOENT) {
+			log_info("interfaces",
+			    "%s does not exist, "
+			    "cannot disable LLDP in firmware for %s",
+			    sysfs_path, name);
+			goto end;
+		}
+		log_warn("interfaces",
+		    "cannot open %s to disable LLDP in firmware for %s", sysfs_path,
+		    name);
+		goto end;
+	}
+	if (write(fd, command, sizeof(command) - 1) == -1) {
+		log_warn("interfaces", "cannot disable LLDP in firmware for %s", name);
+		goto end;
+	}
+end:
+	if (s != -1) close(s);
+	if (fd != -1) close(fd);
+}
+
+int
+asroot_iface_init_os(int ifindex, char *name, int *fd)
+{
+	int rc;
+	/* Open listening socket to receive/send frames */
+	if ((*fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0) {
+		rc = errno;
+		return rc;
+	}
+
+	struct sockaddr_ll sa = { .sll_family = AF_PACKET, .sll_ifindex = ifindex };
+	if (bind(*fd, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
+		rc = errno;
+		log_warn("privsep", "unable to bind to raw socket for interface %s",
+		    name);
+		return rc;
+	}
+
+	/* Set filter */
+	log_debug("privsep", "set BPF filter for %s", name);
+	static struct sock_filter lldpd_filter_f[] = { LLDPD_FILTER_F };
+	struct sock_fprog prog = { .filter = lldpd_filter_f,
+		.len = sizeof(lldpd_filter_f) / sizeof(struct sock_filter) };
+	if (setsockopt(*fd, SOL_SOCKET, SO_ATTACH_FILTER, &prog, sizeof(prog)) < 0) {
+		rc = errno;
+		log_warn("privsep", "unable to change filter for %s", name);
+		return rc;
+	}
+
+	/* Set priority to TC_PRIO_CONTROL for ice Intel cards. See #444. */
+	int prio = TC_PRIO_CONTROL;
+	if (setsockopt(*fd, SOL_SOCKET, SO_PRIORITY, &prio, sizeof(prio)) < 0) {
+		rc = errno;
+		log_warn("privsep",
+		    "unable to set priority \"control\" to socket for interface %s",
+		    name);
+		return rc;
+	}
+
+#ifdef SO_LOCK_FILTER
+	int lock = 1;
+	if (setsockopt(*fd, SOL_SOCKET, SO_LOCK_FILTER, &lock, sizeof(lock)) < 0) {
+		if (errno != ENOPROTOOPT) {
+			rc = errno;
+			log_warn("privsep", "unable to lock filter for %s", name);
+			return rc;
+		}
+	}
+#endif
+#ifdef PACKET_IGNORE_OUTGOING
+	int ignore = 1;
+	if (setsockopt(*fd, SOL_PACKET, PACKET_IGNORE_OUTGOING, &ignore,
+		sizeof(ignore)) < 0) {
+		if (errno != ENOPROTOOPT) {
+			rc = errno;
+			log_warn("privsep",
+			    "unable to set packet direction for BPF filter on %s",
+			    name);
+			return rc;
+		}
+	}
+#endif
+
+	asroot_iface_init_quirks(ifindex, name);
+	return 0;
+}
+
+int
+asroot_iface_description_os(const char *name, const char *description)
+{
+	/* We could use netlink but this is a lot to do in a privileged
+	 * process. Just write to /sys/class/net/XXXX/ifalias. */
+	char *file;
+	char descr[IFALIASZ];
+	FILE *fp;
+	int rc;
+	if (name[0] == '\0' || name[0] == '.') {
+		log_warnx("privsep", "odd interface name %s", name);
+		return -1;
+	}
+	if (asprintf(&file, SYSFS_CLASS_NET "%s/ifalias", name) == -1) {
+		log_warn("privsep",
+		    "unable to allocate memory for setting description");
+		return -1;
+	}
+	if ((fp = fopen(file, "r+")) == NULL) {
+		rc = errno;
+		log_debug("privsep", "cannot open interface description for %s: %s",
+		    name, strerror(errno));
+		free(file);
+		return rc;
+	}
+	free(file);
+	if (strlen(description) == 0 && fgets(descr, sizeof(descr), fp) != NULL) {
+		if (strncmp(descr, "lldpd: ", 7) == 0) {
+			if (strncmp(descr + 7, "was ", 4) == 0) {
+				/* Already has an old neighbor */
+				fclose(fp);
+				return 0;
+			} else {
+				/* Append was */
+				memmove(descr + 11, descr + 7, sizeof(descr) - 11);
+				memcpy(descr, "lldpd: was ", 11);
+			}
+		} else {
+			/* No description, no neighbor */
+			strlcpy(descr, "lldpd: no neighbor", sizeof(descr));
+		}
+	} else
+		snprintf(descr, sizeof(descr), "lldpd: connected to %s", description);
+	if (fputs(descr, fp) == EOF) {
+		log_debug("privsep", "cannot set interface description for %s", name);
+		fclose(fp);
+		return -1;
+	}
+	fclose(fp);
+	return 0;
+}
+
+int
+asroot_iface_promisc_os(const char *name)
+{
+	int s, rc;
+	if ((s = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0) {
+		rc = errno;
+		log_warn("privsep", "unable to open raw socket");
+		return rc;
+	}
+
+	struct ifreq ifr = {};
+	strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
+
+	if (ioctl(s, SIOCGIFFLAGS, &ifr) == -1) {
+		rc = errno;
+		log_warn("privsep", "unable to get interface flags for %s", name);
+		close(s);
+		return rc;
+	}
+
+	if (ifr.ifr_flags & IFF_PROMISC) {
+		close(s);
+		return 0;
+	}
+	ifr.ifr_flags |= IFF_PROMISC;
+	if (ioctl(s, SIOCSIFFLAGS, &ifr) == -1) {
+		rc = errno;
+		log_warn("privsep", "unable to set promisc mode for %s", name);
+		close(s);
+		return rc;
+	}
+	log_info("privsep", "promiscuous mode enabled for %s", name);
+	close(s);
+	return 0;
+}
diff --git a/src/daemon/priv-seccomp.c b/src/daemon/priv-seccomp.c
new file mode 100644
index 0000000..8322cb2
--- /dev/null
+++ b/src/daemon/priv-seccomp.c
@@ -0,0 +1,210 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "lldpd.h"
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <signal.h>
+
+#include "syscall-names.h"
+#include <seccomp.h>
+
+#ifndef SYS_SECCOMP
+#  define SYS_SECCOMP 1
+#endif
+
+#if defined(__i386__)
+#  define REG_SYSCALL REG_EAX
+#  define ARCH_NR AUDIT_ARCH_I386
+#elif defined(__x86_64__)
+#  define REG_SYSCALL REG_RAX
+#  define ARCH_NR AUDIT_ARCH_X86_64
+#else
+#  error "Platform does not support seccomp filter yet"
+#  define REG_SYSCALL 0
+#  define ARCH_NR 0
+#endif
+
+/* If there is no privilege separation, seccomp is currently useless */
+#ifdef ENABLE_PRIVSEP
+static int monitored = -1;
+static int trapped = 0;
+/**
+ * SIGSYS signal handler
+ * @param nr the signal number
+ * @param info siginfo_t pointer
+ * @param void_context handler context
+ *
+ * Simple signal handler for SIGSYS displaying the error, killing the child and
+ * exiting.
+ *
+ */
+static void
+priv_seccomp_trap_handler(int signal, siginfo_t *info, void *vctx)
+{
+	ucontext_t *ctx = (ucontext_t *)(vctx);
+	unsigned int syscall;
+
+	if (trapped) _exit(161); /* Avoid loops */
+
+	/* Get details */
+	if (info->si_code != SYS_SECCOMP) return;
+	if (!ctx) _exit(161);
+	syscall = ctx->uc_mcontext.gregs[REG_SYSCALL];
+	trapped = 1;
+
+	/* Log them. Technically, `log_warnx()` is not signal safe, but we are
+	 * unlikely to reenter here. */
+	log_warnx("seccomp", "invalid syscall attempted: %s(%d)",
+	    (syscall < sizeof(syscall_names)) ? syscall_names[syscall] : "unknown",
+	    syscall);
+
+	/* Kill children and exit */
+	kill(monitored, SIGTERM);
+	fatalx("seccomp", "invalid syscall not allowed: stop here");
+	_exit(161);
+}
+
+/**
+ * Install a TRAP action signal handler
+ *
+ * This function installs the TRAP action signal handler and is based on
+ * examples from Will Drewry and Kees Cook.  Returns zero on success, negative
+ * values on failure.
+ *
+ */
+static int
+priv_seccomp_trap_install()
+{
+	struct sigaction signal_handler = {};
+	sigset_t signal_mask;
+
+	sigemptyset(&signal_mask);
+	sigaddset(&signal_mask, SIGSYS);
+
+	signal_handler.sa_sigaction = &priv_seccomp_trap_handler;
+	signal_handler.sa_flags = SA_SIGINFO;
+	if (sigaction(SIGSYS, &signal_handler, NULL) < 0) return -errno;
+	if (sigprocmask(SIG_UNBLOCK, &signal_mask, NULL)) return -errno;
+
+	return 0;
+}
+
+/**
+ * Initialize seccomp.
+ *
+ * @param remote file descriptor to talk with the unprivileged process
+ * @param monitored monitored child
+ * @return negative on failures or 0 if everything was setup
+ */
+int
+priv_seccomp_init(int remote, int child)
+{
+	int rc = -1;
+	scmp_filter_ctx ctx = NULL;
+
+	log_debug("seccomp", "initialize libseccomp filter");
+	monitored = child;
+	if (priv_seccomp_trap_install() < 0) {
+		log_warn("seccomp", "unable to install SIGSYS handler");
+		goto failure_scmp;
+	}
+
+	if ((ctx = seccomp_init(SCMP_ACT_TRAP)) == NULL) {
+		log_warnx("seccomp", "unable to initialize libseccomp subsystem");
+		goto failure_scmp;
+	}
+
+	if ((rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(read), 1,
+		 SCMP_CMP(0, SCMP_CMP_EQ, remote))) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(write), 1,
+		 SCMP_CMP(0, SCMP_CMP_EQ, remote))) < 0) {
+		errno = -rc;
+		log_warn("seccomp", "unable to allow read/write on remote socket");
+		goto failure_scmp;
+	}
+
+	/* We are far more generic from here. */
+	if ((rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(read), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(write), 0)) <
+		0 || /* write needed for */
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(open), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(openat), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(lseek), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(fcntl), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(kill), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(socket), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(bind), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(setsockopt), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(getsockname), 0)) <
+		0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(uname), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(unlink), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(ioctl), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(sendmsg), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(sendmmsg), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(wait4), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(stat), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(brk), 0)) <
+		0 || /* brk needed for newer libc */
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(getpid), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(rt_sigreturn), 0)) <
+		0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(close), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(sendto), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(poll), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(recvmsg), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(recvfrom), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(readv), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(mprotect), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(sendmmsg), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(clock_gettime), 0)) <
+		0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(gettimeofday), 0)) <
+		0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(newfstatat), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(pread64), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(access), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(rt_sigprocmask), 0)) <
+		0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(getsockopt), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(ppoll), 0)) < 0 ||
+	    /* The following are for resolving addresses */
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(mmap), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(munmap), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(fstat), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(connect), 0)) < 0 ||
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(futex), 0)) < 0 ||
+
+	    (rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, SCMP_SYS(exit_group), 0)) < 0) {
+		errno = -rc;
+		log_warn("seccomp", "unable to build seccomp rules");
+		goto failure_scmp;
+	}
+
+	if ((rc = seccomp_load(ctx)) < 0) {
+		errno = -rc;
+		log_warn("seccomp", "unable to load libseccomp filter");
+		goto failure_scmp;
+	}
+
+failure_scmp:
+	seccomp_release(ctx);
+	return rc;
+}
+#endif
diff --git a/src/daemon/priv.c b/src/daemon/priv.c
new file mode 100644
index 0000000..d642328
--- /dev/null
+++ b/src/daemon/priv.c
@@ -0,0 +1,761 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* This file contains code for privilege separation. When an error arises in
+ * monitor (which is running as root), it just stops instead of trying to
+ * recover. This module also contains proxies to privileged operations. In this
+ * case, error can be non fatal. */
+
+#include "lldpd.h"
+#include "trace.h"
+
+#include <stdio.h>
+#include <unistd.h>
+#include <signal.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <sys/utsname.h>
+#include <sys/ioctl.h>
+#include <netinet/if_ether.h>
+
+#ifdef HAVE_LINUX_CAPABILITIES
+#  include <sys/capability.h>
+#  include <sys/prctl.h>
+#endif
+
+#if defined HOST_OS_FREEBSD || defined HOST_OS_OSX || defined HOST_OS_DRAGONFLY
+#  include <net/if_dl.h>
+#endif
+#if defined HOST_OS_SOLARIS
+#  include <sys/sockio.h>
+#endif
+
+/* Use resolv.h */
+#ifdef HAVE_SYS_TYPES_H
+#  include <sys/types.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#  include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+#  include <arpa/nameser.h> /* DNS HEADER struct */
+#endif
+#ifdef HAVE_NETDB_H
+#  include <netdb.h>
+#endif
+#ifdef HAVE_RESOLV_H
+#  include <resolv.h>
+#endif
+
+/* Bionic has res_init() but it's not in any header */
+#if defined HAVE_RES_INIT && defined __BIONIC__
+int res_init(void);
+#endif
+
+#ifdef ENABLE_PRIVSEP
+static int monitored = -1; /* Child */
+#endif
+
+/* Proxies */
+static void
+priv_ping()
+{
+	int rc;
+	enum priv_cmd cmd = PRIV_PING;
+	must_write(PRIV_UNPRIVILEGED, &cmd, sizeof(enum priv_cmd));
+	priv_wait();
+	must_read(PRIV_UNPRIVILEGED, &rc, sizeof(int));
+	log_debug("privsep", "monitor ready");
+}
+
+/* Proxy for ctl_cleanup */
+void
+priv_ctl_cleanup(const char *ctlname)
+{
+	int rc, len = strlen(ctlname);
+	enum priv_cmd cmd = PRIV_DELETE_CTL_SOCKET;
+	must_write(PRIV_UNPRIVILEGED, &cmd, sizeof(enum priv_cmd));
+	must_write(PRIV_UNPRIVILEGED, &len, sizeof(int));
+	must_write(PRIV_UNPRIVILEGED, ctlname, len);
+	priv_wait();
+	must_read(PRIV_UNPRIVILEGED, &rc, sizeof(int));
+}
+
+/* Proxy for gethostname */
+char *
+priv_gethostname()
+{
+	static char *buf = NULL;
+	int len;
+	enum priv_cmd cmd = PRIV_GET_HOSTNAME;
+	must_write(PRIV_UNPRIVILEGED, &cmd, sizeof(enum priv_cmd));
+	priv_wait();
+	must_read(PRIV_UNPRIVILEGED, &len, sizeof(int));
+	if (len < 0 || len > 255) fatalx("privsep", "too large value requested");
+	if ((buf = (char *)realloc(buf, len + 1)) == NULL) fatal("privsep", NULL);
+	must_read(PRIV_UNPRIVILEGED, buf, len);
+	buf[len] = '\0';
+	return buf;
+}
+
+int
+priv_iface_init(int index, char *iface)
+{
+	int rc;
+	char dev[IFNAMSIZ] = {};
+	enum priv_cmd cmd = PRIV_IFACE_INIT;
+	must_write(PRIV_UNPRIVILEGED, &cmd, sizeof(enum priv_cmd));
+	must_write(PRIV_UNPRIVILEGED, &index, sizeof(int));
+	strlcpy(dev, iface, IFNAMSIZ);
+	must_write(PRIV_UNPRIVILEGED, dev, IFNAMSIZ);
+	priv_wait();
+	must_read(PRIV_UNPRIVILEGED, &rc, sizeof(int));
+	if (rc != 0) return -1;
+	return receive_fd(PRIV_UNPRIVILEGED);
+}
+
+int
+priv_iface_multicast(const char *name, const u_int8_t *mac, int add)
+{
+	int rc;
+	enum priv_cmd cmd = PRIV_IFACE_MULTICAST;
+	must_write(PRIV_UNPRIVILEGED, &cmd, sizeof(enum priv_cmd));
+	must_write(PRIV_UNPRIVILEGED, name, IFNAMSIZ);
+	must_write(PRIV_UNPRIVILEGED, mac, ETHER_ADDR_LEN);
+	must_write(PRIV_UNPRIVILEGED, &add, sizeof(int));
+	priv_wait();
+	must_read(PRIV_UNPRIVILEGED, &rc, sizeof(int));
+	return rc;
+}
+
+int
+priv_iface_description(const char *name, const char *description)
+{
+	int rc, len = strlen(description);
+	enum priv_cmd cmd = PRIV_IFACE_DESCRIPTION;
+	must_write(PRIV_UNPRIVILEGED, &cmd, sizeof(enum priv_cmd));
+	must_write(PRIV_UNPRIVILEGED, name, IFNAMSIZ);
+	must_write(PRIV_UNPRIVILEGED, &len, sizeof(int));
+	must_write(PRIV_UNPRIVILEGED, description, len);
+	priv_wait();
+	must_read(PRIV_UNPRIVILEGED, &rc, sizeof(int));
+	return rc;
+}
+
+/* Proxy to set interface in promiscuous mode */
+int
+priv_iface_promisc(const char *ifname)
+{
+	int rc;
+	enum priv_cmd cmd = PRIV_IFACE_PROMISC;
+	must_write(PRIV_UNPRIVILEGED, &cmd, sizeof(enum priv_cmd));
+	must_write(PRIV_UNPRIVILEGED, ifname, IFNAMSIZ);
+	priv_wait();
+	must_read(PRIV_UNPRIVILEGED, &rc, sizeof(int));
+	return rc;
+}
+
+int
+priv_snmp_socket(struct sockaddr_un *addr)
+{
+	int rc;
+	enum priv_cmd cmd = PRIV_SNMP_SOCKET;
+	must_write(PRIV_UNPRIVILEGED, &cmd, sizeof(enum priv_cmd));
+	must_write(PRIV_UNPRIVILEGED, addr, sizeof(struct sockaddr_un));
+	priv_wait();
+	must_read(PRIV_UNPRIVILEGED, &rc, sizeof(int));
+	if (rc < 0) return rc;
+	return receive_fd(PRIV_UNPRIVILEGED);
+}
+
+static void
+asroot_ping()
+{
+	int rc = 1;
+	must_write(PRIV_PRIVILEGED, &rc, sizeof(int));
+}
+
+static void
+asroot_ctl_cleanup()
+{
+	int len;
+	char *ctlname;
+	int rc = 0;
+
+	must_read(PRIV_PRIVILEGED, &len, sizeof(int));
+	if (len < 0 || len > PATH_MAX) fatalx("privsep", "too large value requested");
+	if ((ctlname = (char *)malloc(len + 1)) == NULL) fatal("privsep", NULL);
+
+	must_read(PRIV_PRIVILEGED, ctlname, len);
+	ctlname[len] = 0;
+
+	ctl_cleanup(ctlname);
+	free(ctlname);
+
+	/* Ack */
+	must_write(PRIV_PRIVILEGED, &rc, sizeof(int));
+}
+
+static void
+asroot_gethostname()
+{
+	struct utsname un;
+	struct addrinfo hints = { .ai_flags = AI_CANONNAME };
+	struct addrinfo *res;
+	int len;
+	if (uname(&un) < 0) fatal("privsep", "failed to get system information");
+	if (getaddrinfo(un.nodename, NULL, &hints, &res) != 0) {
+		log_info("privsep", "unable to get system name");
+#ifdef HAVE_RES_INIT
+		res_init();
+#endif
+		len = strlen(un.nodename);
+		must_write(PRIV_PRIVILEGED, &len, sizeof(int));
+		must_write(PRIV_PRIVILEGED, un.nodename, len);
+	} else {
+		len = strlen(res->ai_canonname);
+		must_write(PRIV_PRIVILEGED, &len, sizeof(int));
+		must_write(PRIV_PRIVILEGED, res->ai_canonname, len);
+		freeaddrinfo(res);
+	}
+}
+
+static void
+asroot_iface_init()
+{
+	int rc = -1, fd = -1;
+	int ifindex;
+	char name[IFNAMSIZ];
+	must_read(PRIV_PRIVILEGED, &ifindex, sizeof(ifindex));
+	must_read(PRIV_PRIVILEGED, &name, sizeof(name));
+	name[sizeof(name) - 1] = '\0';
+
+	TRACE(LLDPD_PRIV_INTERFACE_INIT(name));
+	rc = asroot_iface_init_os(ifindex, name, &fd);
+	must_write(PRIV_PRIVILEGED, &rc, sizeof(rc));
+	if (rc == 0 && fd >= 0) send_fd(PRIV_PRIVILEGED, fd);
+	if (fd >= 0) close(fd);
+}
+
+static void
+asroot_iface_multicast()
+{
+	int sock = -1, add, rc = 0;
+	struct ifreq ifr = { .ifr_name = {} };
+	must_read(PRIV_PRIVILEGED, ifr.ifr_name, IFNAMSIZ);
+#if defined HOST_OS_LINUX
+	must_read(PRIV_PRIVILEGED, ifr.ifr_hwaddr.sa_data, ETHER_ADDR_LEN);
+#elif defined HOST_OS_FREEBSD || defined HOST_OS_OSX || defined HOST_OS_DRAGONFLY
+	/* Black magic from mtest.c */
+	struct sockaddr_dl *dlp = ALIGNED_CAST(struct sockaddr_dl *, &ifr.ifr_addr);
+	dlp->sdl_len = sizeof(struct sockaddr_dl);
+	dlp->sdl_family = AF_LINK;
+	dlp->sdl_index = 0;
+	dlp->sdl_nlen = 0;
+	dlp->sdl_alen = ETHER_ADDR_LEN;
+	dlp->sdl_slen = 0;
+	must_read(PRIV_PRIVILEGED, LLADDR(dlp), ETHER_ADDR_LEN);
+#elif defined HOST_OS_OPENBSD || defined HOST_OS_NETBSD || defined HOST_OS_SOLARIS
+	struct sockaddr *sap = (struct sockaddr *)&ifr.ifr_addr;
+#  if !defined HOST_OS_SOLARIS
+	sap->sa_len = sizeof(struct sockaddr);
+#  endif
+	sap->sa_family = AF_UNSPEC;
+	must_read(PRIV_PRIVILEGED, sap->sa_data, ETHER_ADDR_LEN);
+#else
+#  error Unsupported OS
+#endif
+
+	must_read(PRIV_PRIVILEGED, &add, sizeof(int));
+	if (((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1) ||
+	    ((ioctl(sock, (add) ? SIOCADDMULTI : SIOCDELMULTI, &ifr) < 0) &&
+		(errno != EADDRINUSE)))
+		rc = errno;
+
+	if (sock != -1) close(sock);
+	must_write(PRIV_PRIVILEGED, &rc, sizeof(rc));
+}
+
+static void
+asroot_iface_description()
+{
+	char name[IFNAMSIZ];
+	char *description;
+	int len, rc;
+	must_read(PRIV_PRIVILEGED, &name, sizeof(name));
+	name[sizeof(name) - 1] = '\0';
+	must_read(PRIV_PRIVILEGED, &len, sizeof(int));
+	if (len < 0 || len > PATH_MAX) fatalx("privsep", "too large value requested");
+	if ((description = (char *)malloc(len + 1)) == NULL) fatal("privsep", NULL);
+
+	must_read(PRIV_PRIVILEGED, description, len);
+	description[len] = 0;
+	TRACE(LLDPD_PRIV_INTERFACE_DESCRIPTION(name, description));
+	rc = asroot_iface_description_os(name, description);
+	must_write(PRIV_PRIVILEGED, &rc, sizeof(rc));
+	free(description);
+}
+
+static void
+asroot_iface_promisc()
+{
+	char name[IFNAMSIZ];
+	int rc;
+	must_read(PRIV_PRIVILEGED, &name, sizeof(name));
+	name[sizeof(name) - 1] = '\0';
+	rc = asroot_iface_promisc_os(name);
+	must_write(PRIV_PRIVILEGED, &rc, sizeof(rc));
+}
+
+static void
+asroot_snmp_socket()
+{
+	int sock, rc;
+	static struct sockaddr_un *addr = NULL;
+	struct sockaddr_un bogus;
+
+	if (!addr) {
+		addr = (struct sockaddr_un *)malloc(sizeof(struct sockaddr_un));
+		if (!addr) fatal("privsep", NULL);
+		must_read(PRIV_PRIVILEGED, addr, sizeof(struct sockaddr_un));
+	} else
+		/* We have already been asked to connect to a socket. We will
+		 * connect to the same socket. */
+		must_read(PRIV_PRIVILEGED, &bogus, sizeof(struct sockaddr_un));
+	if (addr->sun_family != AF_UNIX)
+		fatal("privsep", "someone is trying to trick me");
+	addr->sun_path[sizeof(addr->sun_path) - 1] = '\0';
+
+	if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) {
+		log_warn("privsep", "cannot open socket");
+		must_write(PRIV_PRIVILEGED, &sock, sizeof(int));
+		return;
+	}
+	if ((rc = connect(sock, (struct sockaddr *)addr, sizeof(struct sockaddr_un))) !=
+	    0) {
+		log_info("privsep", "cannot connect to %s: %s", addr->sun_path,
+		    strerror(errno));
+		close(sock);
+		rc = -1;
+		must_write(PRIV_PRIVILEGED, &rc, sizeof(int));
+		return;
+	}
+
+	int flags;
+	if ((flags = fcntl(sock, F_GETFL, NULL)) < 0 ||
+	    fcntl(sock, F_SETFL, flags | O_NONBLOCK) < 0) {
+		log_warn("privsep", "cannot set sock %s to non-block : %s",
+		    addr->sun_path, strerror(errno));
+
+		close(sock);
+		rc = -1;
+		must_write(PRIV_PRIVILEGED, &rc, sizeof(int));
+		return;
+	}
+
+	must_write(PRIV_PRIVILEGED, &rc, sizeof(int));
+	send_fd(PRIV_PRIVILEGED, sock);
+	close(sock);
+}
+
+struct dispatch_actions {
+	enum priv_cmd msg;
+	void (*function)(void);
+};
+
+static struct dispatch_actions actions[] = { { PRIV_PING, asroot_ping },
+	{ PRIV_DELETE_CTL_SOCKET, asroot_ctl_cleanup },
+	{ PRIV_GET_HOSTNAME, asroot_gethostname },
+#ifdef HOST_OS_LINUX
+	{ PRIV_OPEN, asroot_open },
+#endif
+	{ PRIV_IFACE_INIT, asroot_iface_init },
+	{ PRIV_IFACE_MULTICAST, asroot_iface_multicast },
+	{ PRIV_IFACE_DESCRIPTION, asroot_iface_description },
+	{ PRIV_IFACE_PROMISC, asroot_iface_promisc },
+	{ PRIV_SNMP_SOCKET, asroot_snmp_socket }, { -1, NULL } };
+
+/* Main loop, run as root */
+static void
+priv_loop(int privileged, int once)
+{
+	enum priv_cmd cmd;
+	struct dispatch_actions *a;
+
+#ifdef ENABLE_PRIVSEP
+	setproctitle("monitor.");
+#  ifdef USE_SECCOMP
+	if (priv_seccomp_init(privileged, monitored) != 0)
+		fatal("privsep", "cannot continue without seccomp setup");
+#  endif
+#endif
+	while (!may_read(PRIV_PRIVILEGED, &cmd, sizeof(enum priv_cmd))) {
+		log_debug("privsep", "received command %d", cmd);
+		for (a = actions; a->function != NULL; a++) {
+			if (cmd == a->msg) {
+				a->function();
+				break;
+			}
+		}
+		if (a->function == NULL) fatalx("privsep", "bogus message received");
+		if (once) break;
+	}
+}
+
+/* This function is a NOOP when privilege separation is enabled. In
+ * the other case, it should be called when we wait an action from the
+ * privileged side. */
+void
+priv_wait()
+{
+#ifndef ENABLE_PRIVSEP
+	/* We have no remote process on the other side. Let's emulate it. */
+	priv_loop(0, 1);
+#endif
+}
+
+#ifdef ENABLE_PRIVSEP
+static void
+priv_exit_rc_status(int rc, int status)
+{
+	switch (rc) {
+	case 0:
+		/* kill child */
+		kill(monitored, SIGTERM);
+		/* we will receive a sigchld in the future */
+		return;
+	case -1:
+		/* child doesn't exist anymore, we consider this is an error to
+		 * be here */
+		_exit(1);
+		break;
+	default:
+		/* Monitored child has terminated */
+		/* Mimic the exit state of the child */
+		if (WIFEXITED(status)) {
+			/* Normal exit */
+			_exit(WEXITSTATUS(status));
+		}
+		if (WIFSIGNALED(status)) {
+			/* Terminated with signal */
+			signal(WTERMSIG(status), SIG_DFL);
+			raise(WTERMSIG(status));
+			_exit(1); /* We consider that not being killed is an error. */
+		}
+		/* Other cases, consider this as an error. */
+		_exit(1);
+		break;
+	}
+}
+
+static void
+priv_exit()
+{
+	int status;
+	int rc;
+	rc = waitpid(monitored, &status, WNOHANG);
+	priv_exit_rc_status(rc, status);
+}
+
+/* If priv parent gets a TERM or HUP, pass it through to child instead */
+static void
+sig_pass_to_chld(int sig)
+{
+	int oerrno = errno;
+	if (monitored != -1) kill(monitored, sig);
+	errno = oerrno;
+}
+
+/* If priv parent gets a SIGCHLD, it will exit if this is the monitored
+ * process. Other processes (including lldpcli)) are just reaped without
+ * consequences. */
+static void
+sig_chld(int sig)
+{
+	int status;
+	int rc = waitpid(monitored, &status, WNOHANG);
+	if (rc == 0) {
+		while ((rc = waitpid(-1, &status, WNOHANG)) > 0) {
+			if (rc == monitored) priv_exit_rc_status(rc, status);
+		}
+		return;
+	}
+	priv_exit_rc_status(rc, status);
+}
+
+/* Create a subdirectory and check if it's here. */
+static int
+_mkdir(const char *pathname, mode_t mode)
+{
+	int save_errno;
+	if (mkdir(pathname, mode) == 0 || errno == EEXIST) {
+		errno = 0;
+		return 0;
+	}
+
+	/* We can get EROFS on some platforms. Let's check if the directory exists. */
+	save_errno = errno;
+	if (chdir(pathname) == -1) {
+		errno = save_errno;
+		return -1;
+	}
+
+	/* We should restore current directory, but in the context we are
+	 * running, we do not care. */
+	return 0;
+}
+
+/* Create a directory recursively. */
+static int
+mkdir_p(const char *pathname, mode_t mode)
+{
+	char path[PATH_MAX + 1];
+	char *current;
+
+	if (strlcpy(path, pathname, sizeof(path)) >= sizeof(path)) {
+		errno = ENAMETOOLONG;
+		return -1;
+	}
+
+	/* Use strtok which will provides non-empty tokens only. */
+	for (current = path + 1; *current; current++) {
+		if (*current != '/') continue;
+		*current = '\0';
+		if (_mkdir(path, mode) != 0) return -1;
+		*current = '/';
+	}
+	if (_mkdir(path, mode) != 0) return -1;
+
+	return 0;
+}
+
+/* Initialization */
+#  define LOCALTIME "/etc/localtime"
+static void
+priv_setup_chroot(const char *chrootdir)
+{
+	/* Create chroot if it does not exist */
+	if (mkdir_p(chrootdir, 0755) == -1) {
+		fatal("privsep", "unable to create chroot directory");
+	}
+
+	/* Check if /etc/localtime exists in chroot or outside chroot */
+	char path[1024];
+	int source = -1, destination = -1;
+	if (snprintf(path, sizeof(path), "%s" LOCALTIME, chrootdir) >= sizeof(path))
+		return;
+	if ((source = open(LOCALTIME, O_RDONLY)) == -1) {
+		if (errno == ENOENT) return;
+		log_warn("privsep", "cannot read " LOCALTIME);
+		return;
+	}
+
+	/* Prepare copy of /etc/localtime */
+	path[strlen(chrootdir) + 4] = '\0';
+	if (mkdir(path, 0755) == -1) {
+		if (errno != EEXIST) {
+			log_warn("privsep", "unable to create %s directory", path);
+			close(source);
+			return;
+		}
+	}
+	path[strlen(chrootdir) + 4] = '/';
+
+	/* Do copy */
+	char buffer[1024];
+	ssize_t n;
+	mode_t old = umask(S_IWGRP | S_IWOTH);
+	if ((destination = open(path, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0666)) ==
+	    -1) {
+		if (errno != EEXIST) log_warn("privsep", "cannot create %s", path);
+		close(source);
+		umask(old);
+		return;
+	}
+	umask(old);
+	while ((n = read(source, buffer, sizeof(buffer))) > 0) {
+		ssize_t nw, left = n;
+		char *p = buffer;
+		while (left > 0) {
+			if ((nw = write(destination, p, left)) == -1) {
+				if (errno == EINTR) continue;
+				log_warn("privsep", "cannot write to %s", path);
+				close(source);
+				close(destination);
+				unlink(path);
+				return;
+			}
+			left -= nw;
+			p += nw;
+		}
+	}
+	if (n == -1) {
+		log_warn("privsep", "cannot read " LOCALTIME);
+		unlink(path);
+	} else {
+		log_info("privsep", LOCALTIME " copied to chroot");
+	}
+	close(source);
+	close(destination);
+}
+#else /* !ENABLE_PRIVSEP */
+
+/* Reap any children. It should only be lldpcli since there is not monitored
+ * process. */
+static void
+sig_chld(int sig)
+{
+	int status = 0;
+	while (waitpid(-1, &status, WNOHANG) > 0)
+		;
+}
+
+#endif
+
+#ifdef ENABLE_PRIVSEP
+static void
+priv_drop(uid_t uid, gid_t gid)
+{
+	gid_t gidset[1];
+	gidset[0] = gid;
+	log_debug("privsep", "dropping privileges");
+#  ifdef HAVE_SETRESGID
+	if (setresgid(gid, gid, gid) == -1) fatal("privsep", "setresgid() failed");
+#  else
+	if (setregid(gid, gid) == -1) fatal("privsep", "setregid() failed");
+#  endif
+	if (setgroups(1, gidset) == -1) fatal("privsep", "setgroups() failed");
+#  ifdef HAVE_SETRESUID
+	if (setresuid(uid, uid, uid) == -1) fatal("privsep", "setresuid() failed");
+#  else
+	if (setreuid(uid, uid) == -1) fatal("privsep", "setreuid() failed");
+#  endif
+}
+
+static void
+priv_caps(uid_t uid, gid_t gid)
+{
+#  ifdef HAVE_LINUX_CAPABILITIES
+	cap_t caps;
+	const char *caps_strings[2] = {
+		"cap_dac_override,cap_net_raw,cap_net_admin,cap_setuid,cap_setgid=pe",
+		"cap_dac_override,cap_net_raw,cap_net_admin=pe"
+	};
+	log_debug("privsep",
+	    "getting CAP_NET_RAW/ADMIN and CAP_DAC_OVERRIDE privilege");
+	if (!(caps = cap_from_text(caps_strings[0])))
+		fatal("privsep", "unable to convert caps");
+	if (cap_set_proc(caps) == -1) {
+		log_warn("privsep",
+		    "unable to drop privileges, monitor running as root");
+		cap_free(caps);
+		return;
+	}
+	cap_free(caps);
+
+	if (prctl(PR_SET_KEEPCAPS, 1L, 0L, 0L, 0L) == -1)
+		fatal("privsep", "cannot keep capabilities");
+	priv_drop(uid, gid);
+
+	log_debug("privsep", "dropping extra capabilities");
+	if (!(caps = cap_from_text(caps_strings[1])))
+		fatal("privsep", "unable to convert caps");
+	if (cap_set_proc(caps) == -1)
+		fatal("privsep", "unable to drop extra privileges");
+	cap_free(caps);
+#  else
+	log_info("privsep", "no libcap support, running monitor as root");
+#  endif
+}
+#endif
+
+void
+#ifdef ENABLE_PRIVSEP
+priv_init(const char *chrootdir, int ctl, uid_t uid, gid_t gid)
+#else
+priv_init(void)
+#endif
+{
+
+	int pair[2];
+
+	/* Create socket pair */
+	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pair) < 0) {
+		fatal("privsep",
+		    "unable to create socket pair for privilege separation");
+	}
+
+	priv_unprivileged_fd(pair[0]);
+	priv_privileged_fd(pair[1]);
+
+#ifdef ENABLE_PRIVSEP
+	/* Spawn off monitor */
+	if ((monitored = fork()) < 0) fatal("privsep", "unable to fork monitor");
+	switch (monitored) {
+	case 0:
+		/* We are in the children, drop privileges */
+		if (RUNNING_ON_VALGRIND)
+			log_warnx("privsep", "running on valgrind, keep privileges");
+		else {
+			priv_setup_chroot(chrootdir);
+			if (chroot(chrootdir) == -1)
+				fatal("privsep", "unable to chroot");
+			if (chdir("/") != 0) fatal("privsep", "unable to chdir");
+			priv_drop(uid, gid);
+		}
+		close(pair[1]);
+		priv_ping();
+		break;
+	default:
+		/* We are in the monitor */
+		if (ctl != -1) close(ctl);
+		close(pair[0]);
+		if (atexit(priv_exit) != 0)
+			fatal("privsep", "unable to set exit function");
+
+		priv_caps(uid, gid);
+
+		/* Install signal handlers */
+		const struct sigaction pass_to_child = { .sa_handler = sig_pass_to_chld,
+			.sa_flags = SA_RESTART };
+		sigaction(SIGALRM, &pass_to_child, NULL);
+		sigaction(SIGTERM, &pass_to_child, NULL);
+		sigaction(SIGHUP, &pass_to_child, NULL);
+		sigaction(SIGINT, &pass_to_child, NULL);
+		sigaction(SIGQUIT, &pass_to_child, NULL);
+		const struct sigaction child = { .sa_handler = sig_chld,
+			.sa_flags = SA_RESTART };
+		sigaction(SIGCHLD, &child, NULL);
+		sig_chld(0); /* Reap already dead children */
+		priv_loop(pair[1], 0);
+		exit(0);
+	}
+#else
+	const struct sigaction child = { .sa_handler = sig_chld,
+		.sa_flags = SA_RESTART };
+	sigaction(SIGCHLD, &child, NULL);
+	sig_chld(0); /* Reap already dead children */
+	log_warnx("priv", "no privilege separation available");
+	priv_ping();
+#endif
+}
diff --git a/src/daemon/privsep.c b/src/daemon/privsep.c
new file mode 100644
index 0000000..04c49a9
--- /dev/null
+++ b/src/daemon/privsep.c
@@ -0,0 +1,26 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+
+#include "lldpd.h"
+
+static int privileged, unprivileged;
+void
+priv_privileged_fd(int fd)
+{
+	privileged = fd;
+}
+void
+priv_unprivileged_fd(int fd)
+{
+	unprivileged = fd;
+}
+int
+priv_fd(enum priv_context ctx)
+{
+	switch (ctx) {
+	case PRIV_PRIVILEGED:
+		return privileged;
+	case PRIV_UNPRIVILEGED:
+		return unprivileged;
+	}
+	return -1; /* Not possible */
+}
diff --git a/src/daemon/privsep_fd.c b/src/daemon/privsep_fd.c
new file mode 100644
index 0000000..fa98663
--- /dev/null
+++ b/src/daemon/privsep_fd.c
@@ -0,0 +1,129 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+
+#include "lldpd.h"
+
+#include <sys/param.h>
+#include <sys/uio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/*
+ * Copyright 2001 Niels Provos <provos@citi.umich.edu>
+ * All rights reserved.
+ *
+ * Copyright (c) 2002 Matthieu Herrb
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *    - Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    - Redistributions in binary form must reproduce the above
+ *      copyright notice, this list of conditions and the following
+ *      disclaimer in the documentation and/or other materials provided
+ *      with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+void
+send_fd(enum priv_context ctx, int fd)
+{
+	struct msghdr msg;
+	union {
+		struct cmsghdr hdr;
+		char buf[CMSG_SPACE(sizeof(int))];
+	} cmsgbuf;
+	struct cmsghdr *cmsg;
+	struct iovec vec;
+	int result = 0;
+	ssize_t n;
+
+	memset(&msg, 0, sizeof(msg));
+	memset(&cmsgbuf.buf, 0, sizeof(cmsgbuf.buf));
+
+	if (fd >= 0) {
+		msg.msg_control = (caddr_t)&cmsgbuf.buf;
+		msg.msg_controllen = sizeof(cmsgbuf.buf);
+		cmsg = CMSG_FIRSTHDR(&msg);
+		cmsg->cmsg_len = CMSG_LEN(sizeof(int));
+		cmsg->cmsg_level = SOL_SOCKET;
+		cmsg->cmsg_type = SCM_RIGHTS;
+		memcpy(CMSG_DATA(cmsg), &fd, sizeof(int));
+	} else {
+		result = errno;
+	}
+
+	vec.iov_base = &result;
+	vec.iov_len = sizeof(int);
+	msg.msg_iov = &vec;
+	msg.msg_iovlen = 1;
+
+	if ((n = sendmsg(priv_fd(ctx), &msg, 0)) == -1)
+		log_warn("privsep", "sendmsg(%d)", priv_fd(ctx));
+	if (n != sizeof(int))
+		log_warnx("privsep", "sendmsg: expected sent 1 got %ld", (long)n);
+}
+
+int
+receive_fd(enum priv_context ctx)
+{
+	struct msghdr msg;
+	union {
+		struct cmsghdr hdr;
+		char buf[CMSG_SPACE(sizeof(int))];
+	} cmsgbuf;
+	struct cmsghdr *cmsg;
+	struct iovec vec;
+	ssize_t n;
+	int result;
+	int fd;
+
+	memset(&msg, 0, sizeof(msg));
+	vec.iov_base = &result;
+	vec.iov_len = sizeof(int);
+	msg.msg_iov = &vec;
+	msg.msg_iovlen = 1;
+	msg.msg_control = &cmsgbuf.buf;
+	msg.msg_controllen = sizeof(cmsgbuf.buf);
+
+	if ((n = recvmsg(priv_fd(ctx), &msg, 0)) == -1) log_warn("privsep", "recvmsg");
+	if (n != sizeof(int))
+		log_warnx("privsep", "recvmsg: expected received 1 got %ld", (long)n);
+	if (result == 0) {
+		cmsg = CMSG_FIRSTHDR(&msg);
+		if (cmsg == NULL) {
+			log_warnx("privsep", "no message header");
+			return -1;
+		}
+		if (cmsg->cmsg_type != SCM_RIGHTS)
+			log_warnx("privsep", "expected type %d got %d", SCM_RIGHTS,
+			    cmsg->cmsg_type);
+		memcpy(&fd, CMSG_DATA(cmsg), sizeof(int));
+		return fd;
+	} else {
+		errno = result;
+		return -1;
+	}
+}
diff --git a/src/daemon/privsep_io.c b/src/daemon/privsep_io.c
new file mode 100644
index 0000000..9d0923a
--- /dev/null
+++ b/src/daemon/privsep_io.c
@@ -0,0 +1,100 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+
+#include "lldpd.h"
+
+#include <sys/param.h>
+#include <sys/uio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/* Stolen from sbin/pflogd/privsep.c from OpenBSD */
+/*
+ * Copyright (c) 2003 Can Erkin Acar
+ * Copyright (c) 2003 Anil Madhavapeddy <anil@recoil.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* Read all data or return 1 for error.  */
+int
+may_read(enum priv_context ctx, void *buf, size_t n)
+{
+	char *s = buf;
+	ssize_t res, pos = 0;
+
+	while (n > pos) {
+		res = read(priv_fd(ctx), s + pos, n - pos);
+		switch (res) {
+		case -1:
+			if (errno == EINTR || errno == EAGAIN) continue;
+			return 1;
+		case 0:
+			return 1;
+		default:
+			pos += res;
+		}
+	}
+	return (0);
+}
+
+/* Read data with the assertion that it all must come through, or
+ * else abort the process.  Based on atomicio() from openssh. */
+void
+must_read(enum priv_context ctx, void *buf, size_t n)
+{
+	char *s = buf;
+	ssize_t res, pos = 0;
+
+	while (n > pos) {
+		res = read(priv_fd(ctx), s + pos, n - pos);
+		switch (res) {
+		case -1:
+			if (errno == EINTR || errno == EAGAIN) continue;
+			_exit(0);
+		case 0:
+			_exit(0);
+		default:
+			pos += res;
+		}
+	}
+}
+
+/* Write data with the assertion that it all has to be written, or
+ * else abort the process.  Based on atomicio() from openssh. */
+void
+must_write(enum priv_context ctx, const void *buf, size_t n)
+{
+	const char *s = buf;
+	ssize_t res, pos = 0;
+
+	while (n > pos) {
+		res = write(priv_fd(ctx), s + pos, n - pos);
+		switch (res) {
+		case -1:
+			if (errno == EINTR || errno == EAGAIN) continue;
+			_exit(0);
+		case 0:
+			_exit(0);
+		default:
+			pos += res;
+		}
+	}
+}
diff --git a/src/daemon/probes.d b/src/daemon/probes.d
new file mode 100644
index 0000000..a4d7785
--- /dev/null
+++ b/src/daemon/probes.d
@@ -0,0 +1,115 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2013 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+provider lldpd {
+
+	/**
+	 * Fired when a frame is received, before it is decoded.
+	 * @param ifname the name of the interface
+	 * @param frame  the received frame
+	 * @param len    the len of the received frame
+	 */
+	probe frame_received(char *ifname, void *frame, size_t len);
+
+	/**
+	 * Fired when a frame is decoded.
+	 * @param ifname       the name of the interface
+	 * @param protocol     the name of the protocol
+	 * @param chassis_name the name of chassis (may be NULL)
+	 * @param port_descr   the description of the port (may be NULL)
+	 */
+	probe frame_decoded(char *ifname, char *protocol, char *chassis_name, char *port_descr);
+
+	/**
+	 * Fired when a frame is sent.
+	 * @param ifname   the name of the interface
+	 * @param protocol the name of the protocol
+	 */
+	probe frame_send(char *ifname, char *protocol);
+
+	/**
+	 * Fired when a neighbor is added.
+	 * @param ifname       the name of the interface where the neighbor appeared
+	 * @param chassis_name the name of chassis (may be NULL)
+	 * @param port_descr   the description of the port (may be NULL)
+	 * @param count        the total number of neighbors known
+	 */
+	probe neighbor_new(char *ifname, char *chassis_name, char *port_descr, int count);
+
+	/**
+	 * Fired when a neighbor is updated.
+	 * @param ifname       the name of the interface where the neighbor updated
+	 * @param chassis_name the name of chassis (may be NULL)
+	 * @param port_descr   the description of the port (may be NULL)
+	 * @param count        the total number of neighbors known
+	 */
+	probe neighbor_update(char *ifname, char *chassis_name, char *port_descr, int count);
+
+	/**
+	 * Fired when a neighbor is deleted.
+	 * @param ifname       the name of the interface where the neighbor deleted
+	 * @param chassis_name the name of chassis (may be NULL)
+	 * @param port_descr   the description of the port (may be NULL)
+	 * @param count        the total number of neighbors known
+	 */
+	probe neighbor_delete(char *ifname, char *chassis_name, char *port_descr);
+
+	/**
+	 * Fired before handling a client request.
+	 * @param name the name of the request
+	 */
+	probe client_request(char *name);
+
+	/**
+	 * Fired for each iteration of the event loop.
+	 */
+	probe event_loop();
+
+        /**
+	 * Fired when initializing a new interface in privileged mode.
+	 * @param name the name of the interface
+	 */
+	probe priv_interface_init(char *name);
+
+	/**
+	 * Fired when setting description of an interface.
+	 * @param name the name of the interface
+	 * @param desc the description of the interface
+	 */
+	probe priv_interface_description(char *name, char *description);
+
+	/**
+	 * Fired when doing an interface updates.
+	 */
+	probe interfaces_update();
+
+	/**
+	 * Fired when receiving an interface update notification.
+	 */
+	probe interfaces_notification();
+
+	/**
+	 * Fired when an interface is removed.
+	 * @param name the name of the interface
+	 */
+	probe interfaces_delete(char *name);
+
+	/**
+	 * Fired when an interface is added.
+	 * @param name the name of the interface
+	 */
+	probe interfaces_new(char *name);
+};
diff --git a/src/daemon/protocols/cdp.c b/src/daemon/protocols/cdp.c
new file mode 100644
index 0000000..620455b
--- /dev/null
+++ b/src/daemon/protocols/cdp.c
@@ -0,0 +1,711 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* We also supports FDP which is very similar to CDPv1 */
+#include "../lldpd.h"
+#include "../frame.h"
+
+/*
+ * CDP Requests Power at the switch output and therefore has to take into
+ * account the loss in the PoE cable. This is done by the switch automatically
+ * if lldp is used as the protocol.
+ */
+#define CDP_CLASS_3_MAX_PSE_POE 154	 /* 15.4W Max PoE at PSE class 3 */
+#define CDP_SWTICH_DEFAULT_POE_PD 130	 /* 13.W default PoE at PD */
+#define CDP_SWTICH_DEFAULT_POE_PSE 154	 /* 15.4W default PoE at PSE */
+#define CDP_SWITCH_POE_CLASS_4_OFFSET 45 /* 4.5W  max loss from cable */
+#define CDP_SWITCH_POE_CLASS_3_OFFSET 24 /* 2.4W  max loss from cable */
+
+#if defined ENABLE_CDP || defined ENABLE_FDP
+
+#  include <stdio.h>
+#  include <unistd.h>
+#  include <errno.h>
+#  include <arpa/inet.h>
+
+static int
+cdp_send(struct lldpd *global, struct lldpd_hardware *hardware, int version)
+{
+	const char *platform = "Unknown";
+	struct lldpd_chassis *chassis;
+	struct lldpd_mgmt *mgmt;
+	struct lldpd_port *port;
+	u_int8_t mcastaddr[] = CDP_MULTICAST_ADDR;
+	u_int8_t llcorg[] = LLC_ORG_CISCO;
+#  ifdef ENABLE_FDP
+	const char *capstr;
+#  endif
+	u_int16_t checksum;
+	int length, i;
+	u_int32_t cap;
+	u_int8_t *packet;
+	u_int8_t *pos, *pos_len_eh, *pos_llc, *pos_cdp, *pos_checksum, *tlv, *end;
+
+	log_debug("cdp", "send CDP frame on %s", hardware->h_ifname);
+
+	port = &(hardware->h_lport);
+	chassis = port->p_chassis;
+
+#  ifdef ENABLE_FDP
+	if (version == 0) {
+		/* With FDP, change multicast address and LLC PID */
+		const u_int8_t fdpmcastaddr[] = FDP_MULTICAST_ADDR;
+		const u_int8_t fdpllcorg[] = LLC_ORG_FOUNDRY;
+		memcpy(mcastaddr, fdpmcastaddr, sizeof(mcastaddr));
+		memcpy(llcorg, fdpllcorg, sizeof(llcorg));
+	}
+#  endif
+
+	length = hardware->h_mtu;
+	if ((packet = (u_int8_t *)calloc(1, length)) == NULL) return ENOMEM;
+	pos = packet;
+
+	/* Ethernet header */
+	if (!(POKE_BYTES(mcastaddr, sizeof(mcastaddr)) &&
+		POKE_BYTES(&hardware->h_lladdr, ETHER_ADDR_LEN) &&
+		POKE_SAVE(pos_len_eh) && /* We compute the len later */
+		POKE_UINT16(0)))
+		goto toobig;
+
+	/* LLC */
+	if (!(POKE_SAVE(pos_llc) && POKE_UINT8(0xaa) && /* SSAP */
+		POKE_UINT8(0xaa) &&			/* DSAP */
+		POKE_UINT8(0x03) &&			/* Control field */
+		POKE_BYTES(llcorg, sizeof(llcorg)) && POKE_UINT16(LLC_PID_CDP)))
+		goto toobig;
+
+	/* CDP header */
+	if (!(POKE_SAVE(pos_cdp) && POKE_UINT8((version == 0) ? 1 : version) &&
+		POKE_UINT8(global ? global->g_config.c_ttl : 180) &&
+		POKE_SAVE(pos_checksum) && /* Save checksum position */
+		POKE_UINT16(0)))
+		goto toobig;
+
+	/* Chassis ID */
+	const char *chassis_name = chassis->c_name ? chassis->c_name : "";
+	if (!(POKE_START_CDP_TLV(CDP_TLV_CHASSIS) &&
+		POKE_BYTES(chassis_name, strlen(chassis_name)) && POKE_END_CDP_TLV))
+		goto toobig;
+
+	/* Adresses */
+	/* See:
+	 *   http://www.cisco.com/univercd/cc/td/doc/product/lan/trsrb/frames.htm#xtocid12
+	 *
+	 * It seems that Cisco implies that CDP supports IPv6 using
+	 * 802.2 address format with 0xAAAA03 0x000000 0x0800, but
+	 * 0x0800 is the Ethernet protocol type for IPv4. Therefore,
+	 * we support only IPv4. */
+	i = 0;
+	TAILQ_FOREACH (mgmt, &chassis->c_mgmt, m_entries)
+		if (mgmt->m_family == LLDPD_AF_IPV4) i++;
+	if (i > 0) {
+		if (!(POKE_START_CDP_TLV(CDP_TLV_ADDRESSES) && POKE_UINT32(i)))
+			goto toobig;
+		TAILQ_FOREACH (mgmt, &chassis->c_mgmt, m_entries) {
+			switch (mgmt->m_family) {
+			case LLDPD_AF_IPV4:
+				if (!(POKE_UINT8(1) &&	 /* Type: NLPID */
+					POKE_UINT8(1) && /* Length: 1 */
+					POKE_UINT8(CDP_ADDRESS_PROTO_IP) && /* IP */
+					POKE_UINT16(sizeof(
+					    struct in_addr)) && /* Address length */
+					POKE_BYTES(&mgmt->m_addr,
+					    sizeof(struct in_addr))))
+					goto toobig;
+				break;
+			}
+		}
+		if (!(POKE_END_CDP_TLV)) goto toobig;
+	}
+
+	/* Port ID */
+	const char *port_descr =
+	    hardware->h_lport.p_descr ? hardware->h_lport.p_descr : "";
+	if (!(POKE_START_CDP_TLV(CDP_TLV_PORT) &&
+		POKE_BYTES(port_descr, strlen(port_descr)) && POKE_END_CDP_TLV))
+		goto toobig;
+
+	/* Capabilities */
+	if (version != 0) {
+		cap = 0;
+		if (chassis->c_cap_enabled & LLDP_CAP_ROUTER) cap |= CDP_CAP_ROUTER;
+		if (chassis->c_cap_enabled & LLDP_CAP_BRIDGE) cap |= CDP_CAP_SWITCH;
+		cap |= CDP_CAP_HOST;
+		if (!(POKE_START_CDP_TLV(CDP_TLV_CAPABILITIES) && POKE_UINT32(cap) &&
+			POKE_END_CDP_TLV))
+			goto toobig;
+#  ifdef ENABLE_FDP
+	} else {
+		/* With FDP, it seems that a string is used in place of an int */
+		if (chassis->c_cap_enabled & LLDP_CAP_ROUTER)
+			capstr = "Router";
+		else if (chassis->c_cap_enabled & LLDP_CAP_BRIDGE)
+			capstr = "Switch";
+		else if (chassis->c_cap_enabled & LLDP_CAP_REPEATER)
+			capstr = "Bridge";
+		else
+			capstr = "Host";
+		if (!(POKE_START_CDP_TLV(CDP_TLV_CAPABILITIES) &&
+			POKE_BYTES(capstr, strlen(capstr)) && POKE_END_CDP_TLV))
+			goto toobig;
+#  endif
+	}
+
+	/* Native VLAN */
+#  ifdef ENABLE_DOT1
+	if (version >= 2 && hardware->h_lport.p_pvid != 0) {
+		if (!(POKE_START_CDP_TLV(CDP_TLV_NATIVEVLAN) &&
+			POKE_UINT16(hardware->h_lport.p_pvid) && POKE_END_CDP_TLV))
+			goto toobig;
+	}
+#  endif
+
+	/* Software version */
+	const char *chassis_descr = chassis->c_descr ? chassis->c_descr : "";
+	if (!(POKE_START_CDP_TLV(CDP_TLV_SOFTWARE) &&
+		POKE_BYTES(chassis_descr, strlen(chassis_descr)) && POKE_END_CDP_TLV))
+		goto toobig;
+
+	/* Platform */
+	if (global && global->g_config.c_platform)
+		platform = global->g_config.c_platform;
+
+	if (!(POKE_START_CDP_TLV(CDP_TLV_PLATFORM) &&
+		POKE_BYTES(platform, strlen(platform)) && POKE_END_CDP_TLV))
+		goto toobig;
+
+#  ifdef ENABLE_DOT3
+	if ((version >= 2) && (port->p_power.powertype != LLDP_DOT3_POWER_8023AT_OFF) &&
+	    (port->p_power.devicetype == LLDP_DOT3_POWER_PD) &&
+	    (port->p_power.requested > 0) && (port->p_power.requested <= 655)) {
+		u_int16_t requested;
+		u_int16_t consumption;
+
+		if (port->p_power.requested != port->p_power.allocated) {
+			port->p_cdp_power.request_id++;
+			log_debug("cdp", "requested: %d, allocated:%d",
+			    port->p_power.requested, port->p_power.allocated);
+		}
+		consumption = port->p_power.allocated ? port->p_power.allocated :
+							CDP_SWTICH_DEFAULT_POE_PD;
+		if (consumption > 130) {
+			consumption += CDP_SWITCH_POE_CLASS_4_OFFSET;
+		} else {
+			consumption += CDP_SWITCH_POE_CLASS_3_OFFSET;
+		}
+		if (port->p_power.requested > 130) { /* Class 4 */
+			requested =
+			    port->p_power.requested + CDP_SWITCH_POE_CLASS_4_OFFSET;
+		} else { /* Class 3 */
+			requested =
+			    port->p_power.requested + CDP_SWITCH_POE_CLASS_3_OFFSET;
+		}
+		if (!(POKE_START_CDP_TLV(CDP_TLV_POWER_CONSUMPTION) &&
+			POKE_UINT16(consumption * 100) && POKE_END_CDP_TLV))
+			goto toobig;
+		/* Avoid request id 0 from overflow */
+		if (!port->p_cdp_power.request_id) {
+			port->p_cdp_power.request_id = 1;
+		}
+		if (!port->p_cdp_power.management_id) {
+			port->p_cdp_power.management_id = 1;
+		}
+		if (!(POKE_START_CDP_TLV(CDP_TLV_POWER_REQUESTED) &&
+			POKE_UINT16(port->p_cdp_power.request_id) &&
+			POKE_UINT16(port->p_cdp_power.management_id) &&
+			POKE_UINT32(requested * 100) && POKE_END_CDP_TLV))
+			goto toobig;
+	}
+#  elif defined ENABLE_LLDPMED
+	/* Power use */
+	if ((version >= 2) && port->p_med_cap_enabled &&
+	    (port->p_med_power.source != LLDP_MED_POW_SOURCE_LOCAL) &&
+	    (port->p_med_power.val > 0) && (port->p_med_power.val <= 655)) {
+		if (!(POKE_START_CDP_TLV(CDP_TLV_POWER_CONSUMPTION) &&
+			POKE_UINT16(port->p_med_power.val * 100) && POKE_END_CDP_TLV))
+			goto toobig;
+	}
+#  endif
+
+	(void)POKE_SAVE(end);
+
+	/* Compute len and checksum */
+	POKE_RESTORE(pos_len_eh);
+	if (!(POKE_UINT16(end - pos_llc))) goto toobig;
+	checksum = frame_checksum(pos_cdp, end - pos_cdp, (version != 0) ? 1 : 0);
+	POKE_RESTORE(pos_checksum);
+	if (!(POKE_UINT16(checksum))) goto toobig;
+
+	if (interfaces_send_helper(global, hardware, (char *)packet, end - packet) ==
+	    -1) {
+		log_warn("cdp", "unable to send packet on real device for %s",
+		    hardware->h_ifname);
+		free(packet);
+		return ENETDOWN;
+	}
+
+	hardware->h_tx_cnt++;
+
+	free(packet);
+	return 0;
+toobig:
+	free(packet);
+	return -1;
+}
+
+#  define CHECK_TLV_SIZE(x, name)                                      \
+    do {                                                               \
+      if (tlv_len < (x)) {                                             \
+	log_warnx("cdp", name " CDP/FDP TLV too short received on %s", \
+	    hardware->h_ifname);                                       \
+	goto malformed;                                                \
+      }                                                                \
+    } while (0)
+/* cdp_decode also decodes FDP */
+int
+cdp_decode(struct lldpd *cfg, char *frame, int s, struct lldpd_hardware *hardware,
+    struct lldpd_chassis **newchassis, struct lldpd_port **newport)
+{
+	struct lldpd_chassis *chassis;
+	struct lldpd_port *port;
+	struct lldpd_mgmt *mgmt;
+	struct in_addr addr;
+#  if 0
+	u_int16_t cksum;
+#  endif
+	u_int8_t *software = NULL, *platform = NULL;
+	int software_len = 0, platform_len = 0, proto, version, nb, caps;
+	const unsigned char cdpaddr[] = CDP_MULTICAST_ADDR;
+#  ifdef ENABLE_FDP
+	const unsigned char fdpaddr[] = CDP_MULTICAST_ADDR;
+	int fdp = 0;
+#  endif
+	u_int8_t *pos, *tlv, *pos_address, *pos_next_address;
+	int length, len_eth, tlv_type, tlv_len, addresses_len, address_len;
+#  ifdef ENABLE_DOT1
+	struct lldpd_vlan *vlan;
+#  endif
+
+	log_debug("cdp", "decode CDP frame received on %s", hardware->h_ifname);
+
+	if ((chassis = calloc(1, sizeof(struct lldpd_chassis))) == NULL) {
+		log_warn("cdp", "failed to allocate remote chassis");
+		return -1;
+	}
+	TAILQ_INIT(&chassis->c_mgmt);
+	if ((port = calloc(1, sizeof(struct lldpd_port))) == NULL) {
+		log_warn("cdp", "failed to allocate remote port");
+		free(chassis);
+		return -1;
+	}
+#  ifdef ENABLE_DOT1
+	TAILQ_INIT(&port->p_vlans);
+#  endif
+
+	length = s;
+	pos = (u_int8_t *)frame;
+
+	if (length < 2 * ETHER_ADDR_LEN + sizeof(u_int16_t) /* Ethernet */ +
+		8 /* LLC */ + 4 /* CDP header */) {
+		log_warn("cdp", "too short CDP/FDP frame received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+
+	if (PEEK_CMP(cdpaddr, sizeof(cdpaddr)) != 0) {
+#  ifdef ENABLE_FDP
+		PEEK_RESTORE((u_int8_t *)frame);
+		if (PEEK_CMP(fdpaddr, sizeof(fdpaddr)) != 0)
+			fdp = 1;
+		else {
+#  endif
+			log_info("cdp",
+			    "frame not targeted at CDP/FDP multicast address received on %s",
+			    hardware->h_ifname);
+			goto malformed;
+#  ifdef ENABLE_FDP
+		}
+#  endif
+	}
+	PEEK_DISCARD(ETHER_ADDR_LEN); /* Don't care of source address */
+	len_eth = PEEK_UINT16;
+	if (len_eth > length) {
+		log_warnx("cdp", "incorrect 802.3 frame size reported on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+
+	/* This is the correct length of the CDP + LLC packets */
+	length = len_eth;
+
+	PEEK_DISCARD(6); /* Skip beginning of LLC */
+	proto = PEEK_UINT16;
+	if (proto != LLC_PID_CDP) {
+		if ((proto != LLC_PID_DRIP) && (proto != LLC_PID_PAGP) &&
+		    (proto != LLC_PID_PVSTP) && (proto != LLC_PID_UDLD) &&
+		    (proto != LLC_PID_VTP) && (proto != LLC_PID_DTP) &&
+		    (proto != LLC_PID_STP))
+			log_debug("cdp", "incorrect LLC protocol ID received on %s",
+			    hardware->h_ifname);
+		goto malformed;
+	}
+
+#  if 0
+	/* Check checksum */
+	cksum = frame_checksum(pos, len_eth - 8,
+#    ifdef ENABLE_FDP
+	    !fdp		/* fdp = 0 -> cisco checksum */
+#    else
+	    1			/* cisco checksum */
+#    endif
+		);
+	if (cksum != 0) {
+		log_info("cdp", "incorrect CDP/FDP checksum for frame received on %s (%d)",
+			  hardware->h_ifname, cksum);
+		goto malformed;
+	}
+#  endif
+
+	/* Check version */
+	version = PEEK_UINT8;
+	if ((version != 1) && (version != 2)) {
+		log_warnx("cdp",
+		    "incorrect CDP/FDP version (%d) for frame received on %s", version,
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	port->p_ttl = PEEK_UINT8; /* TTL */
+	PEEK_DISCARD_UINT16;	  /* Checksum, already checked */
+
+	while (length) {
+		if (length < 4) {
+			log_warnx("cdp",
+			    "CDP/FDP TLV header is too large for "
+			    "frame received on %s",
+			    hardware->h_ifname);
+			goto malformed;
+		}
+		tlv_type = PEEK_UINT16;
+		tlv_len = PEEK_UINT16 - 4;
+
+		(void)PEEK_SAVE(tlv);
+		if ((tlv_len < 0) || (length < tlv_len)) {
+			log_warnx("cdp",
+			    "incorrect size in CDP/FDP TLV header for frame "
+			    "received on %s",
+			    hardware->h_ifname);
+			goto malformed;
+		}
+		switch (tlv_type) {
+		case CDP_TLV_CHASSIS:
+			free(chassis->c_name);
+			if ((chassis->c_name = (char *)calloc(1, tlv_len + 1)) ==
+			    NULL) {
+				log_warn("cdp",
+				    "unable to allocate memory for chassis name");
+				goto malformed;
+			}
+			PEEK_BYTES(chassis->c_name, tlv_len);
+			chassis->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LOCAL;
+			free(chassis->c_id);
+			if ((chassis->c_id = (char *)malloc(tlv_len)) == NULL) {
+				log_warn("cdp",
+				    "unable to allocate memory for chassis ID");
+				goto malformed;
+			}
+			memcpy(chassis->c_id, chassis->c_name, tlv_len);
+			chassis->c_id_len = tlv_len;
+			break;
+		case CDP_TLV_ADDRESSES:
+			CHECK_TLV_SIZE(4, "Address");
+			addresses_len = tlv_len - 4;
+			for (nb = PEEK_UINT32; nb > 0; nb--) {
+				(void)PEEK_SAVE(pos_address);
+				/* We first try to get the real length of the packet */
+				if (addresses_len < 2) {
+					log_warn("cdp",
+					    "too short address subframe "
+					    "received on %s",
+					    hardware->h_ifname);
+					goto malformed;
+				}
+				PEEK_DISCARD_UINT8;
+				addresses_len--;
+				address_len = PEEK_UINT8;
+				addresses_len--;
+				if (addresses_len < address_len + 2) {
+					log_warn("cdp",
+					    "too short address subframe "
+					    "received on %s",
+					    hardware->h_ifname);
+					goto malformed;
+				}
+				PEEK_DISCARD(address_len);
+				addresses_len -= address_len;
+				address_len = PEEK_UINT16;
+				addresses_len -= 2;
+				if (addresses_len < address_len) {
+					log_warn("cdp",
+					    "too short address subframe "
+					    "received on %s",
+					    hardware->h_ifname);
+					goto malformed;
+				}
+				PEEK_DISCARD(address_len);
+				addresses_len -= address_len;
+				(void)PEEK_SAVE(pos_next_address);
+				/* Next, we go back and try to extract
+				   IPv4 address */
+				PEEK_RESTORE(pos_address);
+				if ((PEEK_UINT8 == 1) && (PEEK_UINT8 == 1) &&
+				    (PEEK_UINT8 == CDP_ADDRESS_PROTO_IP) &&
+				    (PEEK_UINT16 == sizeof(struct in_addr))) {
+					PEEK_BYTES(&addr, sizeof(struct in_addr));
+					mgmt = lldpd_alloc_mgmt(LLDPD_AF_IPV4, &addr,
+					    sizeof(struct in_addr), 0);
+					if (mgmt == NULL) {
+						if (errno == ENOMEM)
+							log_warn("cdp",
+							    "unable to allocate memory for management address");
+						else
+							log_warn("cdp",
+							    "too large management address received on %s",
+							    hardware->h_ifname);
+						goto malformed;
+					}
+					TAILQ_INSERT_TAIL(&chassis->c_mgmt, mgmt,
+					    m_entries);
+				}
+				/* Go to the end of the address */
+				PEEK_RESTORE(pos_next_address);
+			}
+			break;
+		case CDP_TLV_PORT:
+			if (tlv_len == 0) {
+				log_warn("cdp", "too short port description received");
+				goto malformed;
+			}
+			free(port->p_descr);
+			if ((port->p_descr = (char *)calloc(1, tlv_len + 1)) == NULL) {
+				log_warn("cdp",
+				    "unable to allocate memory for port description");
+				goto malformed;
+			}
+			PEEK_BYTES(port->p_descr, tlv_len);
+			port->p_id_subtype = LLDP_PORTID_SUBTYPE_IFNAME;
+			free(port->p_id);
+			if ((port->p_id = (char *)calloc(1, tlv_len)) == NULL) {
+				log_warn("cdp",
+				    "unable to allocate memory for port ID");
+				goto malformed;
+			}
+			memcpy(port->p_id, port->p_descr, tlv_len);
+			port->p_id_len = tlv_len;
+			break;
+		case CDP_TLV_CAPABILITIES:
+#  ifdef ENABLE_FDP
+			if (fdp) {
+				/* Capabilities are string with FDP */
+				if (!strncmp("Router", (char *)pos, tlv_len))
+					chassis->c_cap_enabled = LLDP_CAP_ROUTER;
+				else if (!strncmp("Switch", (char *)pos, tlv_len))
+					chassis->c_cap_enabled = LLDP_CAP_BRIDGE;
+				else if (!strncmp("Bridge", (char *)pos, tlv_len))
+					chassis->c_cap_enabled = LLDP_CAP_REPEATER;
+				else
+					chassis->c_cap_enabled = LLDP_CAP_STATION;
+				chassis->c_cap_available = chassis->c_cap_enabled;
+				break;
+			}
+#  endif
+			CHECK_TLV_SIZE(4, "Capabilities");
+			caps = PEEK_UINT32;
+			if (caps & CDP_CAP_ROUTER)
+				chassis->c_cap_enabled |= LLDP_CAP_ROUTER;
+			if (caps & 0x0e) chassis->c_cap_enabled |= LLDP_CAP_BRIDGE;
+			if (chassis->c_cap_enabled == 0)
+				chassis->c_cap_enabled = LLDP_CAP_STATION;
+			chassis->c_cap_available = chassis->c_cap_enabled;
+			break;
+		case CDP_TLV_SOFTWARE:
+			software_len = tlv_len;
+			(void)PEEK_SAVE(software);
+			break;
+		case CDP_TLV_PLATFORM:
+			platform_len = tlv_len;
+			(void)PEEK_SAVE(platform);
+			break;
+#  ifdef ENABLE_DOT1
+		case CDP_TLV_NATIVEVLAN:
+			CHECK_TLV_SIZE(2, "Native VLAN");
+			if ((vlan = (struct lldpd_vlan *)calloc(1,
+				 sizeof(struct lldpd_vlan))) == NULL) {
+				log_warn("cdp",
+				    "unable to alloc vlan "
+				    "structure for "
+				    "tlv received on %s",
+				    hardware->h_ifname);
+				goto malformed;
+			}
+			vlan->v_vid = port->p_pvid = PEEK_UINT16;
+			if (asprintf(&vlan->v_name, "VLAN #%d", vlan->v_vid) == -1) {
+				log_warn("cdp",
+				    "unable to alloc VLAN name for "
+				    "TLV received on %s",
+				    hardware->h_ifname);
+				free(vlan);
+				goto malformed;
+			}
+			TAILQ_INSERT_TAIL(&port->p_vlans, vlan, v_entries);
+			break;
+#  endif
+#  ifdef ENABLE_DOT3
+		case CDP_TLV_POWER_AVAILABLE:
+			CHECK_TLV_SIZE(12, "Power Available");
+			/* check if it is a respone to a request id */
+			if (PEEK_UINT16 > 0) {
+				port->p_cdp_power.management_id = PEEK_UINT16;
+				port->p_power.allocated = PEEK_UINT32;
+				port->p_power.allocated /= 100;
+				port->p_power.supported = 1;
+				port->p_power.enabled = 1;
+				port->p_power.devicetype = LLDP_DOT3_POWER_PSE;
+				port->p_power.powertype = LLDP_DOT3_POWER_8023AT_TYPE2;
+				log_debug("cdp", "Allocated power %d00",
+				    port->p_power.allocated);
+				if (port->p_power.allocated > CDP_CLASS_3_MAX_PSE_POE) {
+					port->p_power.allocated -=
+					    CDP_SWITCH_POE_CLASS_4_OFFSET;
+				} else if (port->p_power.allocated >
+				    CDP_SWITCH_POE_CLASS_3_OFFSET) {
+					port->p_power.allocated -=
+					    CDP_SWITCH_POE_CLASS_3_OFFSET;
+				} else {
+					port->p_power.allocated = 0;
+				}
+				port->p_power.requested =
+				    hardware->h_lport.p_power.requested;
+			}
+			break;
+#  endif
+		default:
+			log_debug("cdp", "unknown CDP/FDP TLV type (%d) received on %s",
+			    ntohs(tlv_type), hardware->h_ifname);
+			hardware->h_rx_unrecognized_cnt++;
+		}
+		PEEK_DISCARD(tlv + tlv_len - pos);
+	}
+	if (!software && platform) {
+		if ((chassis->c_descr = (char *)calloc(1, platform_len + 1)) == NULL) {
+			log_warn("cdp",
+			    "unable to allocate memory for chassis description");
+			goto malformed;
+		}
+		memcpy(chassis->c_descr, platform, platform_len);
+	} else if (software && !platform) {
+		if ((chassis->c_descr = (char *)calloc(1, software_len + 1)) == NULL) {
+			log_warn("cdp",
+			    "unable to allocate memory for chassis description");
+			goto malformed;
+		}
+		memcpy(chassis->c_descr, software, software_len);
+	} else if (software && platform) {
+#  define CONCAT_PLATFORM " running on\n"
+		if ((chassis->c_descr = (char *)calloc(1,
+			 software_len + platform_len + strlen(CONCAT_PLATFORM) + 1)) ==
+		    NULL) {
+			log_warn("cdp",
+			    "unable to allocate memory for chassis description");
+			goto malformed;
+		}
+		memcpy(chassis->c_descr, platform, platform_len);
+		memcpy(chassis->c_descr + platform_len, CONCAT_PLATFORM,
+		    strlen(CONCAT_PLATFORM));
+		memcpy(chassis->c_descr + platform_len + strlen(CONCAT_PLATFORM),
+		    software, software_len);
+	}
+	if ((chassis->c_id == NULL) || (port->p_id == NULL) ||
+	    (chassis->c_name == NULL) || (chassis->c_descr == NULL) ||
+	    (port->p_descr == NULL) || (port->p_ttl == 0) ||
+	    (chassis->c_cap_enabled == 0)) {
+		log_warnx("cdp",
+		    "some mandatory CDP/FDP tlv are missing for frame received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	*newchassis = chassis;
+	*newport = port;
+	return 1;
+
+malformed:
+	lldpd_chassis_cleanup(chassis, 1);
+	lldpd_port_cleanup(port, 1);
+	free(port);
+	return -1;
+}
+
+#  ifdef ENABLE_CDP
+int
+cdpv1_send(struct lldpd *global, struct lldpd_hardware *hardware)
+{
+	return cdp_send(global, hardware, 1);
+}
+
+int
+cdpv2_send(struct lldpd *global, struct lldpd_hardware *hardware)
+{
+	return cdp_send(global, hardware, 2);
+}
+#  endif
+
+#  ifdef ENABLE_FDP
+int
+fdp_send(struct lldpd *global, struct lldpd_hardware *hardware)
+{
+	return cdp_send(global, hardware, 0);
+}
+#  endif
+
+#  ifdef ENABLE_CDP
+static int
+cdp_guess(char *pos, int length, int version)
+{
+	const u_int8_t mcastaddr[] = CDP_MULTICAST_ADDR;
+	if (length < 2 * ETHER_ADDR_LEN + sizeof(u_int16_t) /* Ethernet */ +
+		8 /* LLC */ + 4 /* CDP header */)
+		return 0;
+	if (PEEK_CMP(mcastaddr, ETHER_ADDR_LEN) != 0) return 0;
+	PEEK_DISCARD(ETHER_ADDR_LEN);
+	PEEK_DISCARD_UINT16; /* Ethernet */
+	PEEK_DISCARD(8);     /* LLC */
+	return (PEEK_UINT8 == version);
+}
+
+int
+cdpv1_guess(char *frame, int len)
+{
+	return cdp_guess(frame, len, 1);
+}
+
+int
+cdpv2_guess(char *frame, int len)
+{
+	return cdp_guess(frame, len, 2);
+}
+#  endif
+
+#endif /* defined (ENABLE_CDP) || defined (ENABLE_FDP) */
diff --git a/src/daemon/protocols/cdp.h b/src/daemon/protocols/cdp.h
new file mode 100644
index 0000000..f83ffef
--- /dev/null
+++ b/src/daemon/protocols/cdp.h
@@ -0,0 +1,70 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _CDP_H
+#define _CDP_H
+
+#define CDP_MULTICAST_ADDR             \
+  {                                    \
+    0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc \
+  }
+#define FDP_MULTICAST_ADDR              \
+  {                                     \
+    0x01, 0xe0, 0x52, 0xcc, 0xcc, 0xcc, \
+  }
+#define LLC_ORG_CISCO \
+  {                   \
+    0x00, 0x00, 0x0c  \
+  }
+#define LLC_ORG_FOUNDRY \
+  {                     \
+    0x00, 0xe0, 0x52    \
+  }
+#define LLC_PID_CDP 0x2000
+/* Other protocols */
+#define LLC_PID_DRIP 0x102
+#define LLC_PID_PAGP 0x104
+#define LLC_PID_PVSTP 0x10b
+#define LLC_PID_UDLD 0x111
+#define LLC_PID_VTP 0x2003
+#define LLC_PID_DTP 0x2004
+#define LLC_PID_STP 0x200a
+
+enum {
+	CDP_TLV_CHASSIS = 1,
+	CDP_TLV_ADDRESSES = 2,
+	CDP_TLV_PORT = 3,
+	CDP_TLV_CAPABILITIES = 4,
+	CDP_TLV_SOFTWARE = 5,
+	CDP_TLV_PLATFORM = 6,
+	CDP_TLV_NATIVEVLAN = 10,
+	CDP_TLV_POWER_CONSUMPTION = 0x10,
+	CDP_TLV_POWER_REQUESTED = 0x19,
+	CDP_TLV_POWER_AVAILABLE = 0x1A
+};
+
+#define CDP_ADDRESS_PROTO_IP 0xcc
+
+#define CDP_CAP_ROUTER 0x01
+#define CDP_CAP_TRANSPARENT_BRIDGE 0x02
+#define CDP_CAP_SOURCE_BRIDGE 0x04
+#define CDP_CAP_SWITCH 0x08
+#define CDP_CAP_HOST 0x10
+#define CDP_CAP_IGMP 0x20
+#define CDP_CAP_REPEATER 0x40
+
+#endif /* _CDP_H */
diff --git a/src/daemon/protocols/edp.c b/src/daemon/protocols/edp.c
new file mode 100644
index 0000000..b55130b
--- /dev/null
+++ b/src/daemon/protocols/edp.c
@@ -0,0 +1,514 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "../lldpd.h"
+#include "../frame.h"
+
+#ifdef ENABLE_EDP
+
+#  include <stdio.h>
+#  include <unistd.h>
+#  include <errno.h>
+#  include <arpa/inet.h>
+#  include <fnmatch.h>
+
+static int seq = 0;
+
+int
+edp_send(struct lldpd *global, struct lldpd_hardware *hardware)
+{
+	const u_int8_t mcastaddr[] = EDP_MULTICAST_ADDR;
+	const u_int8_t llcorg[] = LLC_ORG_EXTREME;
+	struct lldpd_chassis *chassis;
+	int length, i, v;
+	u_int8_t *packet, *pos, *pos_llc, *pos_len_eh, *pos_len_edp, *pos_edp, *tlv,
+	    *end;
+	u_int16_t checksum;
+#  ifdef ENABLE_DOT1
+	struct lldpd_vlan *vlan;
+	unsigned int state = 0;
+#  endif
+	u_int8_t edp_fakeversion[] = { 7, 6, 4, 99 };
+	/* Subsequent XXX can be replaced by other values. We place
+	   them here to ensure the position of "" to be a bit
+	   invariant with version changes. */
+	const char *deviceslot[] = { "eth", "veth", "XXX", "XXX", "XXX", "XXX", "XXX",
+		"XXX", "", NULL };
+
+	log_debug("edp", "send EDP frame on port %s", hardware->h_ifname);
+
+	chassis = hardware->h_lport.p_chassis;
+#  ifdef ENABLE_DOT1
+	while (state != 2) {
+#  endif
+		length = hardware->h_mtu;
+		if ((packet = (u_int8_t *)calloc(1, length)) == NULL) return ENOMEM;
+		pos = packet;
+		v = 0;
+
+		/* Ethernet header */
+		if (!(POKE_BYTES(mcastaddr, sizeof(mcastaddr)) &&
+			POKE_BYTES(&hardware->h_lladdr, ETHER_ADDR_LEN) &&
+			POKE_SAVE(pos_len_eh) && /* We compute the len later */
+			POKE_UINT16(0)))
+			goto toobig;
+
+		/* LLC */
+		if (!(POKE_SAVE(pos_llc) && /* We need to save our
+					       current position to
+					       compute ethernet len */
+			/* SSAP and DSAP */
+			POKE_UINT8(0xaa) && POKE_UINT8(0xaa) &&
+			/* Control field */
+			POKE_UINT8(0x03) &&
+			/* ORG */
+			POKE_BYTES(llcorg, sizeof(llcorg)) && POKE_UINT16(LLC_PID_EDP)))
+			goto toobig;
+
+		/* EDP header */
+		if ((chassis->c_id_len != ETHER_ADDR_LEN) ||
+		    (chassis->c_id_subtype != LLDP_CHASSISID_SUBTYPE_LLADDR)) {
+			log_warnx("edp",
+			    "local chassis does not use MAC address as chassis ID!?");
+			free(packet);
+			return EINVAL;
+		}
+		if (!(POKE_SAVE(pos_edp) && /* Save the start of EDP frame */
+			POKE_UINT8(1) && POKE_UINT8(0) &&
+			POKE_SAVE(pos_len_edp) && /* We compute the len
+						     and the checksum
+						     later */
+			POKE_UINT32(0) &&	  /* Len + Checksum */
+			POKE_UINT16(seq) && POKE_UINT16(0) &&
+			POKE_BYTES(chassis->c_id, ETHER_ADDR_LEN)))
+			goto toobig;
+		seq++;
+
+#  ifdef ENABLE_DOT1
+		switch (state) {
+		case 0:
+#  endif
+			/* Display TLV */
+			if (!(POKE_START_EDP_TLV(EDP_TLV_DISPLAY) &&
+				POKE_BYTES(chassis->c_name, strlen(chassis->c_name)) &&
+				POKE_UINT8(0) && /* Add a NULL character
+						    for better
+						    compatibility */
+				POKE_END_EDP_TLV))
+				goto toobig;
+
+			/* Info TLV */
+			if (!(POKE_START_EDP_TLV(EDP_TLV_INFO))) goto toobig;
+			/* We try to emulate the slot thing */
+			for (i = 0; deviceslot[i] != NULL; i++) {
+				if (strncmp(hardware->h_ifname, deviceslot[i],
+					strlen(deviceslot[i])) == 0) {
+					if (!(POKE_UINT16(i) &&
+						POKE_UINT16(atoi(hardware->h_ifname +
+						    strlen(deviceslot[i])))))
+						goto toobig;
+					break;
+				}
+			}
+			/* If we don't find a "slot", we say that the
+			   interface is in slot 8 */
+			if (deviceslot[i] == NULL) {
+				if (!(POKE_UINT16(8) &&
+					POKE_UINT16(hardware->h_ifindex)))
+					goto toobig;
+			}
+			if (!(POKE_UINT16(0) &&			    /* vchassis */
+				POKE_UINT32(0) && POKE_UINT16(0) && /* Reserved */
+				/* Version */
+				POKE_BYTES(edp_fakeversion, sizeof(edp_fakeversion)) &&
+				/* Connections, we say that we won't
+				   have more interfaces than this
+				   mask. */
+				POKE_UINT32(0xffffffff) && POKE_UINT32(0) &&
+				POKE_UINT32(0) && POKE_UINT32(0) && POKE_END_EDP_TLV))
+				goto toobig;
+
+#  ifdef ENABLE_DOT1
+			break;
+		case 1:
+			TAILQ_FOREACH (vlan, &hardware->h_lport.p_vlans, v_entries) {
+				v++;
+				if (!(POKE_START_EDP_TLV(EDP_TLV_VLAN) &&
+					POKE_UINT8(0) && /* Flags: no IP address */
+					POKE_UINT8(0) && /* Reserved */
+					POKE_UINT16(vlan->v_vid) &&
+					POKE_UINT32(0) && /* Reserved */
+					POKE_UINT32(0) && /* IP address */
+					/* VLAN name */
+					POKE_BYTES(vlan->v_name,
+					    strlen(vlan->v_name)) &&
+					POKE_UINT8(0) && POKE_END_EDP_TLV))
+					goto toobig;
+			}
+			break;
+		}
+
+		if ((state == 1) && (v == 0)) {
+			/* No VLAN, no need to send another TLV */
+			free(packet);
+			break;
+		}
+#  endif
+
+		/* Null TLV */
+		if (!(POKE_START_EDP_TLV(EDP_TLV_NULL) && POKE_END_EDP_TLV &&
+			POKE_SAVE(end)))
+			goto toobig;
+
+		/* Compute len and checksum */
+		i = end - pos_llc; /* Ethernet length */
+		v = end - pos_edp; /* EDP length */
+		POKE_RESTORE(pos_len_eh);
+		if (!(POKE_UINT16(i))) goto toobig;
+		POKE_RESTORE(pos_len_edp);
+		if (!(POKE_UINT16(v))) goto toobig;
+		checksum = frame_checksum(pos_edp, v, 0);
+		if (!(POKE_UINT16(checksum))) goto toobig;
+
+		if (interfaces_send_helper(global, hardware, (char *)packet,
+			end - packet) == -1) {
+			log_warn("edp", "unable to send packet on real device for %s",
+			    hardware->h_ifname);
+			free(packet);
+			return ENETDOWN;
+		}
+		free(packet);
+
+#  ifdef ENABLE_DOT1
+		state++;
+	}
+#  endif
+
+	hardware->h_tx_cnt++;
+	return 0;
+toobig:
+	free(packet);
+	return E2BIG;
+}
+
+#  define CHECK_TLV_SIZE(x, name)                                  \
+    do {                                                           \
+      if (tlv_len < (x)) {                                         \
+	log_warnx("edp", name " EDP TLV too short received on %s", \
+	    hardware->h_ifname);                                   \
+	goto malformed;                                            \
+      }                                                            \
+    } while (0)
+
+int
+edp_decode(struct lldpd *cfg, char *frame, int s, struct lldpd_hardware *hardware,
+    struct lldpd_chassis **newchassis, struct lldpd_port **newport)
+{
+	struct lldpd_chassis *chassis;
+	struct lldpd_port *port;
+#  ifdef ENABLE_DOT1
+	struct lldpd_mgmt *mgmt, *mgmt_next, *m;
+	struct lldpd_vlan *lvlan = NULL, *lvlan_next;
+#  endif
+	const unsigned char edpaddr[] = EDP_MULTICAST_ADDR;
+	int length, gotend = 0, gotvlans = 0, edp_len, tlv_len, tlv_type;
+	int edp_port, edp_slot;
+	u_int8_t *pos, *pos_edp, *tlv;
+	u_int8_t version[4];
+#  ifdef ENABLE_DOT1
+	struct in_addr address;
+	struct lldpd_port *oport;
+#  endif
+
+	log_debug("edp", "decode EDP frame on port %s", hardware->h_ifname);
+
+	if ((chassis = calloc(1, sizeof(struct lldpd_chassis))) == NULL) {
+		log_warn("edp", "failed to allocate remote chassis");
+		return -1;
+	}
+	TAILQ_INIT(&chassis->c_mgmt);
+	if ((port = calloc(1, sizeof(struct lldpd_port))) == NULL) {
+		log_warn("edp", "failed to allocate remote port");
+		free(chassis);
+		return -1;
+	}
+#  ifdef ENABLE_DOT1
+	TAILQ_INIT(&port->p_vlans);
+#  endif
+
+	length = s;
+	pos = (u_int8_t *)frame;
+
+	if (length < 2 * ETHER_ADDR_LEN + sizeof(u_int16_t) + 8 /* LLC */ + 10 +
+		ETHER_ADDR_LEN /* EDP header */) {
+		log_warnx("edp", "too short EDP frame received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+
+	if (PEEK_CMP(edpaddr, sizeof(edpaddr)) != 0) {
+		log_info("edp",
+		    "frame not targeted at EDP multicast address received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	PEEK_DISCARD(ETHER_ADDR_LEN);
+	PEEK_DISCARD_UINT16;
+	PEEK_DISCARD(6); /* LLC: DSAP + SSAP + control + org */
+	if (PEEK_UINT16 != LLC_PID_EDP) {
+		log_debug("edp", "incorrect LLC protocol ID received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+
+	(void)PEEK_SAVE(pos_edp); /* Save the start of EDP packet */
+	if (PEEK_UINT8 != 1) {
+		log_warnx("edp", "incorrect EDP version for frame received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	PEEK_DISCARD_UINT8; /* Reserved */
+	edp_len = PEEK_UINT16;
+	PEEK_DISCARD_UINT16;	/* Checksum */
+	PEEK_DISCARD_UINT16;	/* Sequence */
+	if (PEEK_UINT16 != 0) { /* ID Type = 0 = MAC */
+		log_warnx("edp", "incorrect device id type for frame received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	if (edp_len > length + 10) {
+		log_warnx("edp", "incorrect size for EDP frame received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	port->p_ttl = cfg ? cfg->g_config.c_tx_interval * cfg->g_config.c_tx_hold : 0;
+	port->p_ttl = (port->p_ttl + 999) / 1000;
+	chassis->c_id_subtype = LLDP_CHASSISID_SUBTYPE_LLADDR;
+	chassis->c_id_len = ETHER_ADDR_LEN;
+	if ((chassis->c_id = (char *)malloc(ETHER_ADDR_LEN)) == NULL) {
+		log_warn("edp", "unable to allocate memory for chassis ID");
+		goto malformed;
+	}
+	PEEK_BYTES(chassis->c_id, ETHER_ADDR_LEN);
+
+#  ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+	/* Let's check checksum */
+	if (frame_checksum(pos_edp, edp_len, 0) != 0) {
+		log_warnx("edp", "incorrect EDP checksum for frame received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+#  endif
+
+	while (length && !gotend) {
+		if (length < 4) {
+			log_warnx("edp",
+			    "EDP TLV header is too large for "
+			    "frame received on %s",
+			    hardware->h_ifname);
+			goto malformed;
+		}
+		if (PEEK_UINT8 != EDP_TLV_MARKER) {
+			log_warnx("edp",
+			    "incorrect marker starting EDP TLV header for frame "
+			    "received on %s",
+			    hardware->h_ifname);
+			goto malformed;
+		}
+		tlv_type = PEEK_UINT8;
+		tlv_len = PEEK_UINT16 - 4;
+		(void)PEEK_SAVE(tlv);
+		if ((tlv_len < 0) || (tlv_len > length)) {
+			log_debug("edp",
+			    "incorrect size in EDP TLV header for frame "
+			    "received on %s",
+			    hardware->h_ifname);
+			/* Some poor old Extreme Summit are quite bogus */
+			gotend = 1;
+			break;
+		}
+		switch (tlv_type) {
+		case EDP_TLV_INFO:
+			CHECK_TLV_SIZE(32, "Info");
+			port->p_id_subtype = LLDP_PORTID_SUBTYPE_IFNAME;
+			edp_slot = PEEK_UINT16;
+			edp_port = PEEK_UINT16;
+			free(port->p_id);
+			port->p_id_len =
+			    asprintf(&port->p_id, "%d/%d", edp_slot + 1, edp_port + 1);
+			if (port->p_id_len == -1) {
+				log_warn("edp",
+				    "unable to allocate memory for "
+				    "port ID");
+				goto malformed;
+			}
+			free(port->p_descr);
+			if (asprintf(&port->p_descr, "Slot %d / Port %d", edp_slot + 1,
+				edp_port + 1) == -1) {
+				log_warn("edp",
+				    "unable to allocate memory for "
+				    "port description");
+				goto malformed;
+			}
+			PEEK_DISCARD_UINT16; /* vchassis */
+			PEEK_DISCARD(6);     /* Reserved */
+			PEEK_BYTES(version, 4);
+			free(chassis->c_descr);
+			if (asprintf(&chassis->c_descr,
+				"EDP enabled device, version %d.%d.%d.%d", version[0],
+				version[1], version[2], version[3]) == -1) {
+				log_warn("edp",
+				    "unable to allocate memory for "
+				    "chassis description");
+				goto malformed;
+			}
+			break;
+		case EDP_TLV_DISPLAY:
+			free(chassis->c_name);
+			if ((chassis->c_name = (char *)calloc(1, tlv_len + 1)) ==
+			    NULL) {
+				log_warn("edp",
+				    "unable to allocate memory for chassis "
+				    "name");
+				goto malformed;
+			}
+			/* TLV display contains a lot of garbage */
+			PEEK_BYTES(chassis->c_name, tlv_len);
+			break;
+		case EDP_TLV_NULL:
+			if (tlv_len != 0) {
+				log_warnx("edp",
+				    "null tlv with incorrect size in frame "
+				    "received on %s",
+				    hardware->h_ifname);
+				goto malformed;
+			}
+			if (length)
+				log_debug("edp", "extra data after edp frame on %s",
+				    hardware->h_ifname);
+			gotend = 1;
+			break;
+		case EDP_TLV_VLAN:
+#  ifdef ENABLE_DOT1
+			CHECK_TLV_SIZE(12, "VLAN");
+			if ((lvlan = (struct lldpd_vlan *)calloc(1,
+				 sizeof(struct lldpd_vlan))) == NULL) {
+				log_warn("edp", "unable to allocate vlan");
+				goto malformed;
+			}
+			PEEK_DISCARD_UINT16;	    /* Flags + reserved */
+			lvlan->v_vid = PEEK_UINT16; /* VID */
+			PEEK_DISCARD(4);	    /* Reserved */
+			PEEK_BYTES(&address, sizeof(address));
+
+			if (address.s_addr != INADDR_ANY) {
+				mgmt = lldpd_alloc_mgmt(LLDPD_AF_IPV4, &address,
+				    sizeof(struct in_addr), 0);
+				if (mgmt == NULL) {
+					log_warn("edp", "Out of memory");
+					goto malformed;
+				}
+				TAILQ_INSERT_TAIL(&chassis->c_mgmt, mgmt, m_entries);
+			}
+
+			if ((lvlan->v_name = (char *)calloc(1, tlv_len + 1 - 12)) ==
+			    NULL) {
+				log_warn("edp", "unable to allocate vlan name");
+				goto malformed;
+			}
+			PEEK_BYTES(lvlan->v_name, tlv_len - 12);
+
+			TAILQ_INSERT_TAIL(&port->p_vlans, lvlan, v_entries);
+			lvlan = NULL;
+#  endif
+			gotvlans = 1;
+			break;
+		default:
+			log_debug("edp", "unknown EDP TLV type (%d) received on %s",
+			    tlv_type, hardware->h_ifname);
+			hardware->h_rx_unrecognized_cnt++;
+		}
+		PEEK_DISCARD(tlv + tlv_len - pos);
+	}
+	if ((chassis->c_id == NULL) || (port->p_id == NULL) ||
+	    (chassis->c_name == NULL) || (chassis->c_descr == NULL) ||
+	    (port->p_descr == NULL) || (gotend == 0)) {
+#  ifdef ENABLE_DOT1
+		if (gotvlans && gotend) {
+			/* VLAN can be sent in a separate frames. We need to add
+			 * those vlans to an existing port */
+			TAILQ_FOREACH (oport, &hardware->h_rports, p_entries) {
+				if (!((oport->p_protocol == LLDPD_MODE_EDP) &&
+					(oport->p_chassis->c_id_subtype ==
+					    chassis->c_id_subtype) &&
+					(oport->p_chassis->c_id_len ==
+					    chassis->c_id_len) &&
+					(memcmp(oport->p_chassis->c_id, chassis->c_id,
+					     chassis->c_id_len) == 0)))
+					continue;
+				/* We attach the VLANs to the found port */
+				lldpd_vlan_cleanup(oport);
+				for (lvlan = TAILQ_FIRST(&port->p_vlans); lvlan != NULL;
+				     lvlan = lvlan_next) {
+					lvlan_next = TAILQ_NEXT(lvlan, v_entries);
+					TAILQ_REMOVE(&port->p_vlans, lvlan, v_entries);
+					TAILQ_INSERT_TAIL(&oport->p_vlans, lvlan,
+					    v_entries);
+				}
+				/* And the IP addresses */
+				for (mgmt = TAILQ_FIRST(&chassis->c_mgmt); mgmt != NULL;
+				     mgmt = mgmt_next) {
+					mgmt_next = TAILQ_NEXT(mgmt, m_entries);
+					TAILQ_REMOVE(&chassis->c_mgmt, mgmt, m_entries);
+					/* Don't add an address that already exists! */
+					TAILQ_FOREACH (m, &chassis->c_mgmt, m_entries)
+						if (m->m_family == mgmt->m_family &&
+						    !memcmp(&m->m_addr, &mgmt->m_addr,
+							sizeof(m->m_addr)))
+							break;
+					if (m == NULL)
+						TAILQ_INSERT_TAIL(
+						    &oport->p_chassis->c_mgmt, mgmt,
+						    m_entries);
+				}
+			}
+			/* We discard the remaining frame */
+			goto malformed;
+		}
+#  else
+		if (gotvlans) goto malformed;
+#  endif
+		log_warnx("edp",
+		    "some mandatory tlv are missing for frame received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	*newchassis = chassis;
+	*newport = port;
+	return 1;
+
+malformed:
+#  ifdef ENABLE_DOT1
+	free(lvlan);
+#  endif
+	lldpd_chassis_cleanup(chassis, 1);
+	lldpd_port_cleanup(port, 1);
+	free(port);
+	return -1;
+}
+
+#endif /* ENABLE_EDP */
diff --git a/src/daemon/protocols/edp.h b/src/daemon/protocols/edp.h
new file mode 100644
index 0000000..f4ee183
--- /dev/null
+++ b/src/daemon/protocols/edp.h
@@ -0,0 +1,41 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _EDP_H
+#define _EDP_H
+
+#define EDP_MULTICAST_ADDR             \
+  {                                    \
+    0x00, 0xe0, 0x2b, 0x00, 0x00, 0x00 \
+  }
+#define LLC_ORG_EXTREME \
+  {                     \
+    0x00, 0xe0, 0x2b    \
+  }
+#define LLC_PID_EDP 0x00bb
+
+#define EDP_TLV_MARKER 0x99
+
+enum {
+	EDP_TLV_NULL = 0,
+	EDP_TLV_DISPLAY = 1,
+	EDP_TLV_INFO = 2,
+	EDP_TLV_VLAN = 5,
+	EDP_TLV_ESRP = 8,
+};
+
+#endif /* _EDP_H */
diff --git a/src/daemon/protocols/lldp.c b/src/daemon/protocols/lldp.c
new file mode 100644
index 0000000..6e73237
--- /dev/null
+++ b/src/daemon/protocols/lldp.c
@@ -0,0 +1,1315 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "../lldpd.h"
+#include "../frame.h"
+
+#include <unistd.h>
+#include <errno.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+
+static int
+lldpd_af_to_lldp_proto(int af)
+{
+	switch (af) {
+	case LLDPD_AF_IPV4:
+		return LLDP_MGMT_ADDR_IP4;
+	case LLDPD_AF_IPV6:
+		return LLDP_MGMT_ADDR_IP6;
+	default:
+		return LLDP_MGMT_ADDR_NONE;
+	}
+}
+
+static int
+lldpd_af_from_lldp_proto(int proto)
+{
+	switch (proto) {
+	case LLDP_MGMT_ADDR_IP4:
+		return LLDPD_AF_IPV4;
+	case LLDP_MGMT_ADDR_IP6:
+		return LLDPD_AF_IPV6;
+	default:
+		return LLDPD_AF_UNSPEC;
+	}
+}
+
+static int
+_lldp_send(struct lldpd *global, struct lldpd_hardware *hardware, u_int8_t c_id_subtype,
+    char *c_id, int c_id_len, u_int8_t p_id_subtype, char *p_id, int p_id_len,
+    int shutdown, int without_vlans)
+{
+	struct lldpd_port *port;
+	struct lldpd_chassis *chassis;
+	struct lldpd_frame *frame;
+	int length;
+	u_int8_t *packet, *pos, *tlv;
+	struct lldpd_mgmt *mgmt;
+	int proto;
+	int vlans = 0;
+
+	u_int8_t mcastaddr_regular[] = LLDP_ADDR_NEAREST_BRIDGE;
+	u_int8_t mcastaddr_nontpmr[] = LLDP_ADDR_NEAREST_NONTPMR_BRIDGE;
+	u_int8_t mcastaddr_customer[] = LLDP_ADDR_NEAREST_CUSTOMER_BRIDGE;
+	u_int8_t *mcastaddr;
+#ifdef ENABLE_DOT1
+	const u_int8_t dot1[] = LLDP_TLV_ORG_DOT1;
+	struct lldpd_vlan *vlan;
+	struct lldpd_ppvid *ppvid;
+	struct lldpd_pi *pi;
+#endif
+#ifdef ENABLE_DOT3
+	const u_int8_t dot3[] = LLDP_TLV_ORG_DOT3;
+#endif
+#ifdef ENABLE_LLDPMED
+	int i;
+	const u_int8_t med[] = LLDP_TLV_ORG_MED;
+#endif
+#ifdef ENABLE_CUSTOM
+	struct lldpd_custom *custom;
+#endif
+	port = &hardware->h_lport;
+	chassis = port->p_chassis;
+	length = hardware->h_mtu;
+	if ((packet = (u_int8_t *)calloc(1, length)) == NULL) return ENOMEM;
+	pos = packet;
+
+	/* Ethernet header */
+	switch (global->g_config.c_lldp_agent_type) {
+	case LLDP_AGENT_TYPE_NEAREST_NONTPMR_BRIDGE:
+		mcastaddr = mcastaddr_nontpmr;
+		break;
+	case LLDP_AGENT_TYPE_NEAREST_CUSTOMER_BRIDGE:
+		mcastaddr = mcastaddr_customer;
+		break;
+	case LLDP_AGENT_TYPE_NEAREST_BRIDGE:
+	default:
+		mcastaddr = mcastaddr_regular;
+		break;
+	}
+	if (!(
+		/* LLDP multicast address */
+		POKE_BYTES(mcastaddr, ETHER_ADDR_LEN) &&
+		/* Source MAC address */
+		POKE_BYTES(&hardware->h_lladdr, ETHER_ADDR_LEN)))
+		goto toobig;
+
+	/* Insert VLAN tag if needed */
+	if (port->p_vlan_tx_enabled) {
+		if (!(
+			/* VLAN ethertype */
+			POKE_UINT16(ETHERTYPE_VLAN) &&
+			/* VLAN Tag Control Information (TCI) */
+			/* Priority(3bits) | DEI(1bit) | VID(12bit) */
+			POKE_UINT16(port->p_vlan_tx_tag)))
+			goto toobig;
+	}
+
+	if (!(
+		/* LLDP frame */
+		POKE_UINT16(ETH_P_LLDP)))
+		goto toobig;
+
+	/* Chassis ID */
+	if (!(POKE_START_LLDP_TLV(LLDP_TLV_CHASSIS_ID) && POKE_UINT8(c_id_subtype) &&
+		POKE_BYTES(c_id, c_id_len) && POKE_END_LLDP_TLV))
+		goto toobig;
+
+	/* Port ID */
+	if (!(POKE_START_LLDP_TLV(LLDP_TLV_PORT_ID) && POKE_UINT8(p_id_subtype) &&
+		POKE_BYTES(p_id, p_id_len) && POKE_END_LLDP_TLV))
+		goto toobig;
+
+	/* Time to live */
+	if (!(POKE_START_LLDP_TLV(LLDP_TLV_TTL) &&
+		POKE_UINT16(shutdown ? 0 : (global ? global->g_config.c_ttl : 180)) &&
+		POKE_END_LLDP_TLV))
+		goto toobig;
+
+	if (shutdown) goto end;
+
+	/* System name */
+	if (chassis->c_name && *chassis->c_name != '\0') {
+		if (!(POKE_START_LLDP_TLV(LLDP_TLV_SYSTEM_NAME) &&
+			POKE_BYTES(chassis->c_name, strlen(chassis->c_name)) &&
+			POKE_END_LLDP_TLV))
+			goto toobig;
+	}
+
+	/* System description (skip it if empty) */
+	if (chassis->c_descr && *chassis->c_descr != '\0') {
+		if (!(POKE_START_LLDP_TLV(LLDP_TLV_SYSTEM_DESCR) &&
+			POKE_BYTES(chassis->c_descr, strlen(chassis->c_descr)) &&
+			POKE_END_LLDP_TLV))
+			goto toobig;
+	}
+
+	/* System capabilities */
+	if (global->g_config.c_cap_advertise && chassis->c_cap_available) {
+		if (!(POKE_START_LLDP_TLV(LLDP_TLV_SYSTEM_CAP) &&
+			POKE_UINT16(chassis->c_cap_available) &&
+			POKE_UINT16(chassis->c_cap_enabled) && POKE_END_LLDP_TLV))
+			goto toobig;
+	}
+
+	/* Management addresses */
+	TAILQ_FOREACH (mgmt, &chassis->c_mgmt, m_entries) {
+		proto = lldpd_af_to_lldp_proto(mgmt->m_family);
+		if (proto == LLDP_MGMT_ADDR_NONE) continue;
+		if (!(POKE_START_LLDP_TLV(LLDP_TLV_MGMT_ADDR) &&
+			/* Size of the address, including its type */
+			POKE_UINT8(mgmt->m_addrsize + 1) && POKE_UINT8(proto) &&
+			POKE_BYTES(&mgmt->m_addr, mgmt->m_addrsize)))
+			goto toobig;
+
+		/* Interface port type, OID */
+		if (mgmt->m_iface == 0) {
+			if (!(
+				/* We don't know the management interface */
+				POKE_UINT8(LLDP_MGMT_IFACE_UNKNOWN) && POKE_UINT32(0)))
+				goto toobig;
+		} else {
+			if (!(
+				/* We have the index of the management interface */
+				POKE_UINT8(LLDP_MGMT_IFACE_IFINDEX) &&
+				POKE_UINT32(mgmt->m_iface)))
+				goto toobig;
+		}
+		if (!(
+			/* We don't provide an OID for management */
+			POKE_UINT8(0) && POKE_END_LLDP_TLV))
+			goto toobig;
+	}
+
+	/* Port description */
+	if (port->p_descr && *port->p_descr != '\0') {
+		if (!(POKE_START_LLDP_TLV(LLDP_TLV_PORT_DESCR) &&
+			POKE_BYTES(port->p_descr, strlen(port->p_descr)) &&
+			POKE_END_LLDP_TLV))
+			goto toobig;
+	}
+
+#ifdef ENABLE_DOT1
+	/* Port VLAN ID */
+	if (port->p_pvid != 0) {
+		if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) &&
+			POKE_BYTES(dot1, sizeof(dot1)) &&
+			POKE_UINT8(LLDP_TLV_DOT1_PVID) && POKE_UINT16(port->p_pvid) &&
+			POKE_END_LLDP_TLV)) {
+			goto toobig;
+		}
+	}
+	/* Port and Protocol VLAN IDs */
+	TAILQ_FOREACH (ppvid, &port->p_ppvids, p_entries) {
+		if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) &&
+			POKE_BYTES(dot1, sizeof(dot1)) &&
+			POKE_UINT8(LLDP_TLV_DOT1_PPVID) &&
+			POKE_UINT8(ppvid->p_cap_status) &&
+			POKE_UINT16(ppvid->p_ppvid) && POKE_END_LLDP_TLV)) {
+			goto toobig;
+		}
+	}
+	/* VLANs */
+	if (!without_vlans) {
+		TAILQ_FOREACH (vlan, &port->p_vlans, v_entries) {
+			vlans++;
+			if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) &&
+				POKE_BYTES(dot1, sizeof(dot1)) &&
+				POKE_UINT8(LLDP_TLV_DOT1_VLANNAME) &&
+				POKE_UINT16(vlan->v_vid) &&
+				POKE_UINT8(strlen(vlan->v_name)) &&
+				POKE_BYTES(vlan->v_name, strlen(vlan->v_name)) &&
+				POKE_END_LLDP_TLV))
+				goto toobig;
+		}
+	}
+	/* Protocol Identities */
+	TAILQ_FOREACH (pi, &port->p_pids, p_entries) {
+		if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) &&
+			POKE_BYTES(dot1, sizeof(dot1)) &&
+			POKE_UINT8(LLDP_TLV_DOT1_PI) && POKE_UINT8(pi->p_pi_len) &&
+			POKE_BYTES(pi->p_pi, pi->p_pi_len) && POKE_END_LLDP_TLV))
+			goto toobig;
+	}
+#endif
+
+#ifdef ENABLE_DOT3
+	/* Aggregation status */
+	if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) && POKE_BYTES(dot3, sizeof(dot3)) &&
+		POKE_UINT8(LLDP_TLV_DOT3_LA) &&
+		/* Bit 0 = capability ; Bit 1 = status */
+		POKE_UINT8((port->p_aggregid) ? 3 : 1) &&
+		POKE_UINT32(port->p_aggregid) && POKE_END_LLDP_TLV))
+		goto toobig;
+
+	/* MAC/PHY */
+	if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) && POKE_BYTES(dot3, sizeof(dot3)) &&
+		POKE_UINT8(LLDP_TLV_DOT3_MAC) &&
+		POKE_UINT8(port->p_macphy.autoneg_support |
+		    (port->p_macphy.autoneg_enabled << 1)) &&
+		POKE_UINT16(port->p_macphy.autoneg_advertised) &&
+		POKE_UINT16(port->p_macphy.mau_type) && POKE_END_LLDP_TLV))
+		goto toobig;
+
+	/* MFS */
+	if (port->p_mfs) {
+		if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) &&
+			POKE_BYTES(dot3, sizeof(dot3)) &&
+			POKE_UINT8(LLDP_TLV_DOT3_MFS) && POKE_UINT16(port->p_mfs) &&
+			POKE_END_LLDP_TLV))
+			goto toobig;
+	}
+	/* Power */
+	if (port->p_power.devicetype) {
+		if (!((POKE_START_LLDP_TLV(LLDP_TLV_ORG)) &&
+			POKE_BYTES(dot3, sizeof(dot3)) &&
+			POKE_UINT8(LLDP_TLV_DOT3_POWER) &&
+			POKE_UINT8(((((2 - port->p_power.devicetype) % (1 << 1)) << 0) |
+			    ((port->p_power.supported % (1 << 1)) << 1) |
+			    ((port->p_power.enabled % (1 << 1)) << 2) |
+			    ((port->p_power.paircontrol % (1 << 1)) << 3))) &&
+			POKE_UINT8(port->p_power.pairs) &&
+			POKE_UINT8(port->p_power.class)))
+			goto toobig;
+		/* 802.3at */
+		if (port->p_power.powertype != LLDP_DOT3_POWER_8023AT_OFF) {
+			if (!(POKE_UINT8(((((port->p_power.powertype ==
+						LLDP_DOT3_POWER_8023AT_TYPE1) ?
+						   1 :
+						   0)
+					      << 7) |
+				  (((port->p_power.devicetype == LLDP_DOT3_POWER_PSE) ?
+					   0 :
+					   1)
+				      << 6) |
+				  ((port->p_power.source % (1 << 2)) << 4) |
+				  ((port->p_power.priority % (1 << 2)) << 0))) &&
+				POKE_UINT16(port->p_power.requested) &&
+				POKE_UINT16(port->p_power.allocated)))
+				goto toobig;
+		}
+		if (!(POKE_END_LLDP_TLV)) goto toobig;
+	}
+#endif
+
+#ifdef ENABLE_LLDPMED
+	if (port->p_med_cap_enabled) {
+		/* LLDP-MED cap */
+		if (port->p_med_cap_enabled & LLDP_MED_CAP_CAP) {
+			if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) &&
+				POKE_BYTES(med, sizeof(med)) &&
+				POKE_UINT8(LLDP_TLV_MED_CAP) &&
+				POKE_UINT16(chassis->c_med_cap_available) &&
+				POKE_UINT8(chassis->c_med_type) && POKE_END_LLDP_TLV))
+				goto toobig;
+		}
+
+		/* LLDP-MED inventory */
+#  define LLDP_INVENTORY(value, subtype)                                         \
+    if (value) {                                                                 \
+      if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) && POKE_BYTES(med, sizeof(med)) && \
+	      POKE_UINT8(subtype) &&                                             \
+	      POKE_BYTES(value, (strlen(value) > 32) ? 32 : strlen(value)) &&    \
+	      POKE_END_LLDP_TLV))                                                \
+	goto toobig;                                                             \
+    }
+
+		if (port->p_med_cap_enabled & LLDP_MED_CAP_IV) {
+			LLDP_INVENTORY(chassis->c_med_hw, LLDP_TLV_MED_IV_HW);
+			LLDP_INVENTORY(chassis->c_med_fw, LLDP_TLV_MED_IV_FW);
+			LLDP_INVENTORY(chassis->c_med_sw, LLDP_TLV_MED_IV_SW);
+			LLDP_INVENTORY(chassis->c_med_sn, LLDP_TLV_MED_IV_SN);
+			LLDP_INVENTORY(chassis->c_med_manuf, LLDP_TLV_MED_IV_MANUF);
+			LLDP_INVENTORY(chassis->c_med_model, LLDP_TLV_MED_IV_MODEL);
+			LLDP_INVENTORY(chassis->c_med_asset, LLDP_TLV_MED_IV_ASSET);
+		}
+
+		/* LLDP-MED location */
+		for (i = 0; i < LLDP_MED_LOCFORMAT_LAST; i++) {
+			if (port->p_med_location[i].format == i + 1) {
+				if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) &&
+					POKE_BYTES(med, sizeof(med)) &&
+					POKE_UINT8(LLDP_TLV_MED_LOCATION) &&
+					POKE_UINT8(port->p_med_location[i].format) &&
+					POKE_BYTES(port->p_med_location[i].data,
+					    port->p_med_location[i].data_len) &&
+					POKE_END_LLDP_TLV))
+					goto toobig;
+			}
+		}
+
+		/* LLDP-MED network policy */
+		for (i = 0; i < LLDP_MED_APPTYPE_LAST; i++) {
+			if (port->p_med_policy[i].type == i + 1) {
+				if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) &&
+					POKE_BYTES(med, sizeof(med)) &&
+					POKE_UINT8(LLDP_TLV_MED_POLICY) &&
+					POKE_UINT32((
+					    ((port->p_med_policy[i].type % (1 << 8))
+						<< 24) |
+					    ((port->p_med_policy[i].unknown % (1 << 1))
+						<< 23) |
+					    ((port->p_med_policy[i].tagged % (1 << 1))
+						<< 22) |
+					    /*((0                              %(1<<
+					       1))<<21) |*/
+					    ((port->p_med_policy[i].vid % (1 << 12))
+						<< 9) |
+					    ((port->p_med_policy[i].priority % (1 << 3))
+						<< 6) |
+					    ((port->p_med_policy[i].dscp % (1 << 6))
+						<< 0))) &&
+					POKE_END_LLDP_TLV))
+					goto toobig;
+			}
+		}
+
+		/* LLDP-MED POE-MDI */
+		if ((port->p_med_power.devicetype == LLDP_MED_POW_TYPE_PSE) ||
+		    (port->p_med_power.devicetype == LLDP_MED_POW_TYPE_PD)) {
+			int devicetype = 0, source = 0;
+			if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) &&
+				POKE_BYTES(med, sizeof(med)) &&
+				POKE_UINT8(LLDP_TLV_MED_MDI)))
+				goto toobig;
+			switch (port->p_med_power.devicetype) {
+			case LLDP_MED_POW_TYPE_PSE:
+				devicetype = 0;
+				switch (port->p_med_power.source) {
+				case LLDP_MED_POW_SOURCE_PRIMARY:
+					source = 1;
+					break;
+				case LLDP_MED_POW_SOURCE_BACKUP:
+					source = 2;
+					break;
+				case LLDP_MED_POW_SOURCE_RESERVED:
+					source = 3;
+					break;
+				default:
+					source = 0;
+					break;
+				}
+				break;
+			case LLDP_MED_POW_TYPE_PD:
+				devicetype = 1;
+				switch (port->p_med_power.source) {
+				case LLDP_MED_POW_SOURCE_PSE:
+					source = 1;
+					break;
+				case LLDP_MED_POW_SOURCE_LOCAL:
+					source = 2;
+					break;
+				case LLDP_MED_POW_SOURCE_BOTH:
+					source = 3;
+					break;
+				default:
+					source = 0;
+					break;
+				}
+				break;
+			}
+			if (!(POKE_UINT8((((devicetype % (1 << 2)) << 6) |
+				  ((source % (1 << 2)) << 4) |
+				  ((port->p_med_power.priority % (1 << 4)) << 0))) &&
+				POKE_UINT16(port->p_med_power.val) &&
+				POKE_END_LLDP_TLV))
+				goto toobig;
+		}
+	}
+#endif
+
+#ifdef ENABLE_CUSTOM
+	TAILQ_FOREACH (custom, &port->p_custom_list, next) {
+		if (!(POKE_START_LLDP_TLV(LLDP_TLV_ORG) &&
+			POKE_BYTES(custom->oui, sizeof(custom->oui)) &&
+			POKE_UINT8(custom->subtype) &&
+			POKE_BYTES(custom->oui_info, custom->oui_info_len) &&
+			POKE_END_LLDP_TLV))
+			goto toobig;
+	}
+#endif
+
+end:
+	/* END */
+	if (!(POKE_START_LLDP_TLV(LLDP_TLV_END) && POKE_END_LLDP_TLV)) goto toobig;
+
+	if (interfaces_send_helper(global, hardware, (char *)packet, pos - packet) ==
+	    -1) {
+		log_warn("lldp", "unable to send packet on real device for %s",
+		    hardware->h_ifname);
+		free(packet);
+		return ENETDOWN;
+	}
+
+	hardware->h_tx_cnt++;
+
+	/* We assume that LLDP frame is the reference */
+	if (!shutdown &&
+	    (frame = (struct lldpd_frame *)malloc(sizeof(int) + pos - packet)) !=
+		NULL) {
+		frame->size = pos - packet;
+		memcpy(&frame->frame, packet, frame->size);
+		if ((hardware->h_lport.p_lastframe == NULL) ||
+		    (hardware->h_lport.p_lastframe->size != frame->size) ||
+		    (memcmp(hardware->h_lport.p_lastframe->frame, frame->frame,
+			 frame->size) != 0)) {
+			free(hardware->h_lport.p_lastframe);
+			hardware->h_lport.p_lastframe = frame;
+			hardware->h_lport.p_lastchange = time(NULL);
+		} else
+			free(frame);
+	}
+
+	free(packet);
+	return 0;
+
+toobig:
+	free(packet);
+	if (vlans > 0 && !without_vlans) {
+		/* Retry without VLANs */
+		return _lldp_send(global, hardware, c_id_subtype, c_id, c_id_len,
+		    p_id_subtype, p_id, p_id_len, shutdown, 1);
+	}
+	log_info("lldp", "Cannot send LLDP packet for %s, too big message",
+	    hardware->h_ifname);
+	return E2BIG;
+}
+
+/* Send a shutdown LLDPDU. */
+int
+lldp_send_shutdown(struct lldpd *global, struct lldpd_hardware *hardware)
+{
+	if (hardware->h_lchassis_previous_id == NULL ||
+	    hardware->h_lport_previous_id == NULL)
+		return 0;
+	return _lldp_send(global, hardware, hardware->h_lchassis_previous_id_subtype,
+	    hardware->h_lchassis_previous_id, hardware->h_lchassis_previous_id_len,
+	    hardware->h_lport_previous_id_subtype, hardware->h_lport_previous_id,
+	    hardware->h_lport_previous_id_len, 1, 0);
+}
+
+int
+lldp_send(struct lldpd *global, struct lldpd_hardware *hardware)
+{
+	struct lldpd_port *port = &hardware->h_lport;
+	struct lldpd_chassis *chassis = port->p_chassis;
+	int ret;
+
+	/* Check if we have a change. */
+	if (hardware->h_lchassis_previous_id != NULL &&
+	    hardware->h_lport_previous_id != NULL &&
+	    (hardware->h_lchassis_previous_id_subtype != chassis->c_id_subtype ||
+		hardware->h_lchassis_previous_id_len != chassis->c_id_len ||
+		hardware->h_lport_previous_id_subtype != port->p_id_subtype ||
+		hardware->h_lport_previous_id_len != port->p_id_len ||
+		memcmp(hardware->h_lchassis_previous_id, chassis->c_id,
+		    chassis->c_id_len) ||
+		memcmp(hardware->h_lport_previous_id, port->p_id, port->p_id_len))) {
+		log_info("lldp",
+		    "MSAP has changed for port %s, sending a shutdown LLDPDU",
+		    hardware->h_ifname);
+		if ((ret = lldp_send_shutdown(global, hardware)) != 0) return ret;
+	}
+
+	log_debug("lldp", "send LLDP PDU to %s", hardware->h_ifname);
+
+	if ((ret = _lldp_send(global, hardware, chassis->c_id_subtype, chassis->c_id,
+		 chassis->c_id_len, port->p_id_subtype, port->p_id, port->p_id_len, 0,
+		 0)) != 0)
+		return ret;
+
+	/* Record current chassis and port ID */
+	free(hardware->h_lchassis_previous_id);
+	hardware->h_lchassis_previous_id_subtype = chassis->c_id_subtype;
+	hardware->h_lchassis_previous_id_len = chassis->c_id_len;
+	if ((hardware->h_lchassis_previous_id = malloc(chassis->c_id_len)) != NULL)
+		memcpy(hardware->h_lchassis_previous_id, chassis->c_id,
+		    chassis->c_id_len);
+	free(hardware->h_lport_previous_id);
+	hardware->h_lport_previous_id_subtype = port->p_id_subtype;
+	hardware->h_lport_previous_id_len = port->p_id_len;
+	if ((hardware->h_lport_previous_id = malloc(port->p_id_len)) != NULL)
+		memcpy(hardware->h_lport_previous_id, port->p_id, port->p_id_len);
+
+	return 0;
+}
+
+#define CHECK_TLV_SIZE(x, name)                                                    \
+  do {                                                                             \
+    if (tlv_size < (x)) {                                                          \
+      log_warnx("lldp", name " TLV too short received on %s", hardware->h_ifname); \
+      goto malformed;                                                              \
+    }                                                                              \
+  } while (0)
+#define CHECK_TLV_MAX_SIZE(x, name)                                                \
+  do {                                                                             \
+    if (tlv_size > (x)) {                                                          \
+      log_warnx("lldp", name " TLV too large received on %s", hardware->h_ifname); \
+      goto malformed;                                                              \
+    }                                                                              \
+  } while (0)
+
+int
+lldp_decode(struct lldpd *cfg, char *frame, int s, struct lldpd_hardware *hardware,
+    struct lldpd_chassis **newchassis, struct lldpd_port **newport)
+{
+	struct lldpd_chassis *chassis;
+	struct lldpd_port *port;
+	char lldpaddr[ETHER_ADDR_LEN];
+	const char dot1[] = LLDP_TLV_ORG_DOT1;
+	const char dot3[] = LLDP_TLV_ORG_DOT3;
+	const char med[] = LLDP_TLV_ORG_MED;
+	const char dcbx[] = LLDP_TLV_ORG_DCBX;
+	unsigned char orgid[3];
+	int length, gotend = 0, ttl_received = 0;
+	int tlv_size, tlv_type, tlv_subtype, tlv_count = 0;
+	u_int8_t *pos, *tlv;
+	char *b;
+#ifdef ENABLE_DOT1
+	struct lldpd_vlan *vlan = NULL;
+	int vlan_len;
+	struct lldpd_ppvid *ppvid;
+	struct lldpd_pi *pi = NULL;
+#endif
+	struct lldpd_mgmt *mgmt;
+	int af;
+	u_int8_t addr_str_length, addr_str_buffer[32] = { 0 };
+	u_int8_t addr_family, addr_length, *addr_ptr, iface_subtype;
+	u_int32_t iface_number, iface;
+	int unrecognized;
+#ifdef ENABLE_CUSTOM
+	struct lldpd_custom *custom = NULL;
+#endif
+
+	log_debug("lldp", "receive LLDP PDU on %s", hardware->h_ifname);
+
+	if ((chassis = calloc(1, sizeof(struct lldpd_chassis))) == NULL) {
+		log_warn("lldp", "failed to allocate remote chassis");
+		return -1;
+	}
+	TAILQ_INIT(&chassis->c_mgmt);
+	if ((port = calloc(1, sizeof(struct lldpd_port))) == NULL) {
+		log_warn("lldp", "failed to allocate remote port");
+		free(chassis);
+		return -1;
+	}
+#ifdef ENABLE_DOT1
+	TAILQ_INIT(&port->p_vlans);
+	TAILQ_INIT(&port->p_ppvids);
+	TAILQ_INIT(&port->p_pids);
+#endif
+#ifdef ENABLE_CUSTOM
+	TAILQ_INIT(&port->p_custom_list);
+#endif
+
+	length = s;
+	pos = (u_int8_t *)frame;
+
+	if (length < 2 * ETHER_ADDR_LEN + sizeof(u_int16_t)) {
+		log_warnx("lldp", "too short frame received on %s", hardware->h_ifname);
+		goto malformed;
+	}
+	PEEK_BYTES(lldpaddr, ETHER_ADDR_LEN);
+	if (memcmp(lldpaddr, (const char[])LLDP_ADDR_NEAREST_BRIDGE, ETHER_ADDR_LEN) &&
+	    memcmp(lldpaddr, (const char[])LLDP_ADDR_NEAREST_NONTPMR_BRIDGE,
+		ETHER_ADDR_LEN) &&
+	    memcmp(lldpaddr, (const char[])LLDP_ADDR_NEAREST_CUSTOMER_BRIDGE,
+		ETHER_ADDR_LEN)) {
+		log_info("lldp",
+		    "frame not targeted at LLDP multicast address received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	PEEK_DISCARD(ETHER_ADDR_LEN); /* Skip source address */
+	if (PEEK_UINT16 != ETH_P_LLDP) {
+		log_info("lldp", "non LLDP frame received on %s", hardware->h_ifname);
+		goto malformed;
+	}
+
+	while (length && (!gotend)) {
+		if (length < 2) {
+			log_warnx("lldp", "tlv header too short received on %s",
+			    hardware->h_ifname);
+			goto malformed;
+		}
+		tlv_size = PEEK_UINT16;
+		tlv_type = tlv_size >> 9;
+		tlv_size = tlv_size & 0x1ff;
+		(void)PEEK_SAVE(tlv);
+		if (length < tlv_size) {
+			log_warnx("lldp", "frame too short for tlv received on %s",
+			    hardware->h_ifname);
+			goto malformed;
+		}
+		/* Check order for mandatory TLVs */
+		tlv_count++;
+		switch (tlv_type) {
+		case LLDP_TLV_CHASSIS_ID:
+			if (tlv_count != 1) {
+				log_warnx("lldp",
+				    "Chassis ID TLV should be first on %s, but it is on position %d",
+				    hardware->h_ifname, tlv_count);
+				goto malformed;
+			}
+			break;
+		case LLDP_TLV_PORT_ID:
+			if (tlv_count != 2) {
+				log_warnx("lldp",
+				    "Port ID TLV should be second on %s, but it is on position %d",
+				    hardware->h_ifname, tlv_count);
+				goto malformed;
+			}
+			break;
+		case LLDP_TLV_TTL:
+			if (tlv_count != 3) {
+				log_warnx("lldp",
+				    "TTL TLV should be third on %s, but it is on position %d",
+				    hardware->h_ifname, tlv_count);
+				goto malformed;
+			}
+			break;
+		}
+
+		switch (tlv_type) {
+		case LLDP_TLV_END:
+			if (tlv_size != 0) {
+				log_warnx("lldp",
+				    "lldp end received with size not null on %s",
+				    hardware->h_ifname);
+				goto malformed;
+			}
+			if (length)
+				log_debug("lldp", "extra data after lldp end on %s",
+				    hardware->h_ifname);
+			gotend = 1;
+			break;
+		case LLDP_TLV_CHASSIS_ID:
+		case LLDP_TLV_PORT_ID:
+			CHECK_TLV_SIZE(2, "Port/Chassis Id");
+			CHECK_TLV_MAX_SIZE(256, "Port/Chassis Id");
+			tlv_subtype = PEEK_UINT8;
+			if ((tlv_subtype == 0) || (tlv_subtype > 7)) {
+				log_warnx("lldp",
+				    "unknown subtype for tlv id received on %s",
+				    hardware->h_ifname);
+				goto malformed;
+			}
+			if ((b = (char *)calloc(1, tlv_size - 1)) == NULL) {
+				log_warn("lldp",
+				    "unable to allocate memory for id tlv "
+				    "received on %s",
+				    hardware->h_ifname);
+				goto malformed;
+			}
+			PEEK_BYTES(b, tlv_size - 1);
+			if (tlv_type == LLDP_TLV_PORT_ID) {
+				if (port->p_id != NULL) {
+					log_warnx("lldp",
+					    "Port ID TLV received twice on %s",
+					    hardware->h_ifname);
+					free(b);
+					goto malformed;
+				}
+				port->p_id_subtype = tlv_subtype;
+				port->p_id = b;
+				port->p_id_len = tlv_size - 1;
+			} else {
+				if (chassis->c_id != NULL) {
+					log_warnx("lldp",
+					    "Chassis ID TLV received twice on %s",
+					    hardware->h_ifname);
+					free(b);
+					goto malformed;
+				}
+				chassis->c_id_subtype = tlv_subtype;
+				chassis->c_id = b;
+				chassis->c_id_len = tlv_size - 1;
+			}
+			break;
+		case LLDP_TLV_TTL:
+			if (ttl_received) {
+				log_warnx("lldp", "TTL TLV received twice on %s",
+				    hardware->h_ifname);
+				goto malformed;
+			}
+			CHECK_TLV_SIZE(2, "TTL");
+			port->p_ttl = PEEK_UINT16;
+			ttl_received = 1;
+			break;
+		case LLDP_TLV_PORT_DESCR:
+		case LLDP_TLV_SYSTEM_NAME:
+		case LLDP_TLV_SYSTEM_DESCR:
+			if (tlv_size < 1) {
+				log_debug("lldp", "empty tlv received on %s",
+				    hardware->h_ifname);
+				break;
+			}
+			if ((b = (char *)calloc(1, tlv_size + 1)) == NULL) {
+				log_warn("lldp",
+				    "unable to allocate memory for string tlv "
+				    "received on %s",
+				    hardware->h_ifname);
+				goto malformed;
+			}
+			PEEK_BYTES(b, tlv_size);
+			switch (tlv_type) {
+			case LLDP_TLV_PORT_DESCR:
+				free(port->p_descr);
+				port->p_descr = b;
+				break;
+			case LLDP_TLV_SYSTEM_NAME:
+				free(chassis->c_name);
+				chassis->c_name = b;
+				break;
+			case LLDP_TLV_SYSTEM_DESCR:
+				free(chassis->c_descr);
+				chassis->c_descr = b;
+				break;
+			default:
+				/* unreachable */
+				free(b);
+				break;
+			}
+			break;
+		case LLDP_TLV_SYSTEM_CAP:
+			CHECK_TLV_SIZE(4, "System capabilities");
+			chassis->c_cap_available = PEEK_UINT16;
+			chassis->c_cap_enabled = PEEK_UINT16;
+			break;
+		case LLDP_TLV_MGMT_ADDR:
+			CHECK_TLV_SIZE(1, "Management address");
+			addr_str_length = PEEK_UINT8;
+			if (addr_str_length > sizeof(addr_str_buffer)) {
+				log_warnx("lldp", "too large management address on %s",
+				    hardware->h_ifname);
+				goto malformed;
+			}
+			CHECK_TLV_SIZE(1 + addr_str_length, "Management address");
+			PEEK_BYTES(addr_str_buffer, addr_str_length);
+			addr_length = addr_str_length - 1;
+			addr_family = addr_str_buffer[0];
+			addr_ptr = &addr_str_buffer[1];
+			CHECK_TLV_SIZE(1 + addr_str_length + 5, "Management address");
+			iface_subtype = PEEK_UINT8;
+			iface_number = PEEK_UINT32;
+
+			af = lldpd_af_from_lldp_proto(addr_family);
+			if (af == LLDPD_AF_UNSPEC) break;
+			if (iface_subtype == LLDP_MGMT_IFACE_IFINDEX)
+				iface = iface_number;
+			else
+				iface = 0;
+			mgmt = lldpd_alloc_mgmt(af, addr_ptr, addr_length, iface);
+			if (mgmt == NULL) {
+				if (errno == ENOMEM)
+					log_warn("lldp",
+					    "unable to allocate memory "
+					    "for management address");
+				else
+					log_warn("lldp",
+					    "too large management address "
+					    "received on %s",
+					    hardware->h_ifname);
+				goto malformed;
+			}
+			TAILQ_INSERT_TAIL(&chassis->c_mgmt, mgmt, m_entries);
+			break;
+		case LLDP_TLV_ORG:
+			CHECK_TLV_SIZE(1 + (int)sizeof(orgid), "Organisational");
+			PEEK_BYTES(orgid, sizeof(orgid));
+			unrecognized = 0;
+			tlv_subtype = PEEK_UINT8;
+			if (memcmp(dot1, orgid, sizeof(orgid)) == 0) {
+#ifndef ENABLE_DOT1
+				unrecognized = 1;
+#else
+				/* Dot1 */
+				switch (tlv_subtype) {
+				case LLDP_TLV_DOT1_VLANNAME:
+					CHECK_TLV_SIZE(7, "VLAN");
+					if ((vlan = (struct lldpd_vlan *)calloc(1,
+						 sizeof(struct lldpd_vlan))) == NULL) {
+						log_warn("lldp",
+						    "unable to alloc vlan "
+						    "structure for "
+						    "tlv received on %s",
+						    hardware->h_ifname);
+						goto malformed;
+					}
+					vlan->v_vid = PEEK_UINT16;
+					vlan_len = PEEK_UINT8;
+					CHECK_TLV_SIZE(7 + vlan_len, "VLAN");
+					if ((vlan->v_name = (char *)calloc(1,
+						 vlan_len + 1)) == NULL) {
+						log_warn("lldp",
+						    "unable to alloc vlan name for "
+						    "tlv received on %s",
+						    hardware->h_ifname);
+						goto malformed;
+					}
+					PEEK_BYTES(vlan->v_name, vlan_len);
+					TAILQ_INSERT_TAIL(&port->p_vlans, vlan,
+					    v_entries);
+					vlan = NULL;
+					break;
+				case LLDP_TLV_DOT1_PVID:
+					CHECK_TLV_SIZE(6, "PVID");
+					port->p_pvid = PEEK_UINT16;
+					break;
+				case LLDP_TLV_DOT1_PPVID:
+					CHECK_TLV_SIZE(7, "PPVID");
+					/* validation needed */
+					/* PPVID has to be unique if more than
+					   one PPVID TLVs are received  -
+					   discard if duplicate */
+					/* if support bit is not set and
+					   enabled bit is set - PPVID TLV is
+					   considered error  and discarded */
+					/* if PPVID > 4096 - bad and discard */
+					if ((ppvid = (struct lldpd_ppvid *)calloc(1,
+						 sizeof(struct lldpd_ppvid))) == NULL) {
+						log_warn("lldp",
+						    "unable to alloc ppvid "
+						    "structure for "
+						    "tlv received on %s",
+						    hardware->h_ifname);
+						goto malformed;
+					}
+					ppvid->p_cap_status = PEEK_UINT8;
+					ppvid->p_ppvid = PEEK_UINT16;
+					TAILQ_INSERT_TAIL(&port->p_ppvids, ppvid,
+					    p_entries);
+					break;
+				case LLDP_TLV_DOT1_PI:
+					/* validation needed */
+					/* PI has to be unique if more than
+					   one PI TLVs are received  - discard
+					   if duplicate ?? */
+					CHECK_TLV_SIZE(5, "PI");
+					if ((pi = (struct lldpd_pi *)calloc(1,
+						 sizeof(struct lldpd_pi))) == NULL) {
+						log_warn("lldp",
+						    "unable to alloc PI "
+						    "structure for "
+						    "tlv received on %s",
+						    hardware->h_ifname);
+						goto malformed;
+					}
+					pi->p_pi_len = PEEK_UINT8;
+					CHECK_TLV_SIZE(5 + pi->p_pi_len, "PI");
+					if ((pi->p_pi = (char *)calloc(1,
+						 pi->p_pi_len)) == NULL) {
+						log_warn("lldp",
+						    "unable to alloc pid name for "
+						    "tlv received on %s",
+						    hardware->h_ifname);
+						goto malformed;
+					}
+					PEEK_BYTES(pi->p_pi, pi->p_pi_len);
+					TAILQ_INSERT_TAIL(&port->p_pids, pi, p_entries);
+					pi = NULL;
+					break;
+				default:
+					/* Unknown Dot1 TLV, ignore it */
+					unrecognized = 1;
+				}
+#endif
+			} else if (memcmp(dot3, orgid, sizeof(orgid)) == 0) {
+#ifndef ENABLE_DOT3
+				unrecognized = 1;
+#else
+				/* Dot3 */
+				switch (tlv_subtype) {
+				case LLDP_TLV_DOT3_MAC:
+					CHECK_TLV_SIZE(9, "MAC/PHY");
+					port->p_macphy.autoneg_support = PEEK_UINT8;
+					port->p_macphy.autoneg_enabled =
+					    (port->p_macphy.autoneg_support & 0x2) >> 1;
+					port->p_macphy.autoneg_support =
+					    port->p_macphy.autoneg_support & 0x1;
+					port->p_macphy.autoneg_advertised = PEEK_UINT16;
+					port->p_macphy.mau_type = PEEK_UINT16;
+					break;
+				case LLDP_TLV_DOT3_LA:
+					CHECK_TLV_SIZE(9, "Link aggregation");
+					PEEK_DISCARD_UINT8;
+					port->p_aggregid = PEEK_UINT32;
+					break;
+				case LLDP_TLV_DOT3_MFS:
+					CHECK_TLV_SIZE(6, "MFS");
+					port->p_mfs = PEEK_UINT16;
+					break;
+				case LLDP_TLV_DOT3_POWER:
+					CHECK_TLV_SIZE(7, "Power");
+					port->p_power.devicetype = PEEK_UINT8;
+					port->p_power.supported =
+					    (port->p_power.devicetype & 0x2) >> 1;
+					port->p_power.enabled =
+					    (port->p_power.devicetype & 0x4) >> 2;
+					port->p_power.paircontrol =
+					    (port->p_power.devicetype & 0x8) >> 3;
+					port->p_power.devicetype =
+					    (port->p_power.devicetype & 0x1) ?
+					    LLDP_DOT3_POWER_PSE :
+					    LLDP_DOT3_POWER_PD;
+					port->p_power.pairs = PEEK_UINT8;
+					port->p_power.class = PEEK_UINT8;
+					/* 802.3at? */
+					if (tlv_size >= 12) {
+						port->p_power.powertype = PEEK_UINT8;
+						port->p_power.source =
+						    (port->p_power.powertype &
+							(1 << 5 | 1 << 4)) >>
+						    4;
+						port->p_power.priority =
+						    (port->p_power.powertype &
+							(1 << 1 | 1 << 0));
+						port->p_power.powertype =
+						    (port->p_power.powertype &
+							(1 << 7)) ?
+						    LLDP_DOT3_POWER_8023AT_TYPE1 :
+						    LLDP_DOT3_POWER_8023AT_TYPE2;
+						port->p_power.requested = PEEK_UINT16;
+						port->p_power.allocated = PEEK_UINT16;
+					} else
+						port->p_power.powertype =
+						    LLDP_DOT3_POWER_8023AT_OFF;
+					/* 802.3bt? */
+					if (tlv_size >= 29) {
+						port->p_power.requested_a = PEEK_UINT16;
+						port->p_power.requested_b = PEEK_UINT16;
+						port->p_power.allocated_a = PEEK_UINT16;
+						port->p_power.allocated_b = PEEK_UINT16;
+						port->p_power.pse_status = PEEK_UINT16;
+						port->p_power.pd_status =
+						    (port->p_power.pse_status &
+							(1 << 13 | 1 << 12)) >>
+						    12;
+						port->p_power.pse_pairs_ext =
+						    (port->p_power.pse_status &
+							(1 << 11 | 1 << 10)) >>
+						    10;
+						port->p_power.class_a =
+						    (port->p_power.pse_status &
+							(1 << 9 | 1 << 8 | 1 << 7)) >>
+						    7;
+						port->p_power.class_b =
+						    (port->p_power.pse_status &
+							(1 << 6 | 1 << 5 | 1 << 4)) >>
+						    4;
+						port->p_power.class_ext =
+						    (port->p_power.pse_status & 0xf);
+						port->p_power.pse_status =
+						    (port->p_power.pse_status &
+							(1 << 15 | 1 << 14)) >>
+						    14;
+						port->p_power.type_ext = PEEK_UINT8;
+						port->p_power.pd_load =
+						    (port->p_power.type_ext & 0x1);
+						port->p_power.type_ext =
+						    ((port->p_power.type_ext &
+							 (1 << 3 | 1 << 2 | 1 << 1)) +
+							1);
+						port->p_power.pse_max = PEEK_UINT16;
+					} else {
+						port->p_power.type_ext =
+						    LLDP_DOT3_POWER_8023BT_OFF;
+					}
+					break;
+				default:
+					/* Unknown Dot3 TLV, ignore it */
+					unrecognized = 1;
+				}
+#endif
+			} else if (memcmp(med, orgid, sizeof(orgid)) == 0) {
+				/* LLDP-MED */
+#ifndef ENABLE_LLDPMED
+				unrecognized = 1;
+#else
+				u_int32_t policy;
+				unsigned loctype;
+				unsigned power;
+
+				switch (tlv_subtype) {
+				case LLDP_TLV_MED_CAP:
+					CHECK_TLV_SIZE(7, "LLDP-MED capabilities");
+					chassis->c_med_cap_available = PEEK_UINT16;
+					chassis->c_med_type = PEEK_UINT8;
+					port->p_med_cap_enabled |= LLDP_MED_CAP_CAP;
+					break;
+				case LLDP_TLV_MED_POLICY:
+					CHECK_TLV_SIZE(8, "LLDP-MED policy");
+					policy = PEEK_UINT32;
+					if (((policy >> 24) < 1) ||
+					    ((policy >> 24) > LLDP_MED_APPTYPE_LAST)) {
+						log_info("lldp",
+						    "unknown policy field %d "
+						    "received on %s",
+						    policy, hardware->h_ifname);
+						break;
+					}
+					port->p_med_policy[(policy >> 24) - 1].type =
+					    (policy >> 24);
+					port->p_med_policy[(policy >> 24) - 1].unknown =
+					    ((policy & 0x800000) != 0);
+					port->p_med_policy[(policy >> 24) - 1].tagged =
+					    ((policy & 0x400000) != 0);
+					port->p_med_policy[(policy >> 24) - 1].vid =
+					    (policy & 0x001FFE00) >> 9;
+					port->p_med_policy[(policy >> 24) - 1]
+					    .priority = (policy & 0x1C0) >> 6;
+					port->p_med_policy[(policy >> 24) - 1].dscp =
+					    policy & 0x3F;
+					port->p_med_cap_enabled |= LLDP_MED_CAP_POLICY;
+					break;
+				case LLDP_TLV_MED_LOCATION:
+					CHECK_TLV_SIZE(5, "LLDP-MED Location");
+					loctype = PEEK_UINT8;
+					if ((loctype < 1) ||
+					    (loctype > LLDP_MED_LOCFORMAT_LAST)) {
+						log_info("lldp",
+						    "unknown location type "
+						    "received on %s",
+						    hardware->h_ifname);
+						break;
+					}
+					free(port->p_med_location[loctype - 1].data);
+					if ((port->p_med_location[loctype - 1].data =
+						    (char *)malloc(tlv_size - 5)) ==
+					    NULL) {
+						log_warn("lldp",
+						    "unable to allocate memory "
+						    "for LLDP-MED location for "
+						    "frame received on %s",
+						    hardware->h_ifname);
+						goto malformed;
+					}
+					PEEK_BYTES(
+					    port->p_med_location[loctype - 1].data,
+					    tlv_size - 5);
+					port->p_med_location[loctype - 1].data_len =
+					    tlv_size - 5;
+					port->p_med_location[loctype - 1].format =
+					    loctype;
+					port->p_med_cap_enabled |=
+					    LLDP_MED_CAP_LOCATION;
+					break;
+				case LLDP_TLV_MED_MDI:
+					CHECK_TLV_SIZE(7, "LLDP-MED PoE-MDI");
+					power = PEEK_UINT8;
+					switch (power & 0xC0) {
+					case 0x0:
+						port->p_med_power.devicetype =
+						    LLDP_MED_POW_TYPE_PSE;
+						port->p_med_cap_enabled |=
+						    LLDP_MED_CAP_MDI_PSE;
+						switch (power & 0x30) {
+						case 0x0:
+							port->p_med_power.source =
+							    LLDP_MED_POW_SOURCE_UNKNOWN;
+							break;
+						case 0x10:
+							port->p_med_power.source =
+							    LLDP_MED_POW_SOURCE_PRIMARY;
+							break;
+						case 0x20:
+							port->p_med_power.source =
+							    LLDP_MED_POW_SOURCE_BACKUP;
+							break;
+						default:
+							port->p_med_power.source =
+							    LLDP_MED_POW_SOURCE_RESERVED;
+						}
+						break;
+					case 0x40:
+						port->p_med_power.devicetype =
+						    LLDP_MED_POW_TYPE_PD;
+						port->p_med_cap_enabled |=
+						    LLDP_MED_CAP_MDI_PD;
+						switch (power & 0x30) {
+						case 0x0:
+							port->p_med_power.source =
+							    LLDP_MED_POW_SOURCE_UNKNOWN;
+							break;
+						case 0x10:
+							port->p_med_power.source =
+							    LLDP_MED_POW_SOURCE_PSE;
+							break;
+						case 0x20:
+							port->p_med_power.source =
+							    LLDP_MED_POW_SOURCE_LOCAL;
+							break;
+						default:
+							port->p_med_power.source =
+							    LLDP_MED_POW_SOURCE_BOTH;
+						}
+						break;
+					default:
+						port->p_med_power.devicetype =
+						    LLDP_MED_POW_TYPE_RESERVED;
+					}
+					if ((power & 0x0F) > LLDP_MED_POW_PRIO_LOW)
+						port->p_med_power.priority =
+						    LLDP_MED_POW_PRIO_UNKNOWN;
+					else
+						port->p_med_power.priority =
+						    power & 0x0F;
+					port->p_med_power.val = PEEK_UINT16;
+					break;
+				case LLDP_TLV_MED_IV_HW:
+				case LLDP_TLV_MED_IV_SW:
+				case LLDP_TLV_MED_IV_FW:
+				case LLDP_TLV_MED_IV_SN:
+				case LLDP_TLV_MED_IV_MANUF:
+				case LLDP_TLV_MED_IV_MODEL:
+				case LLDP_TLV_MED_IV_ASSET:
+					if (tlv_size <= 4)
+						b = NULL;
+					else {
+						if ((b = (char *)malloc(
+							 tlv_size - 3)) == NULL) {
+							log_warn("lldp",
+							    "unable to allocate "
+							    "memory for LLDP-MED "
+							    "inventory for frame "
+							    "received on %s",
+							    hardware->h_ifname);
+							goto malformed;
+						}
+						PEEK_BYTES(b, tlv_size - 4);
+						b[tlv_size - 4] = '\0';
+					}
+					switch (tlv_subtype) {
+					case LLDP_TLV_MED_IV_HW:
+						free(chassis->c_med_hw);
+						chassis->c_med_hw = b;
+						break;
+					case LLDP_TLV_MED_IV_FW:
+						free(chassis->c_med_fw);
+						chassis->c_med_fw = b;
+						break;
+					case LLDP_TLV_MED_IV_SW:
+						free(chassis->c_med_sw);
+						chassis->c_med_sw = b;
+						break;
+					case LLDP_TLV_MED_IV_SN:
+						free(chassis->c_med_sn);
+						chassis->c_med_sn = b;
+						break;
+					case LLDP_TLV_MED_IV_MANUF:
+						free(chassis->c_med_manuf);
+						chassis->c_med_manuf = b;
+						break;
+					case LLDP_TLV_MED_IV_MODEL:
+						free(chassis->c_med_model);
+						chassis->c_med_model = b;
+						break;
+					case LLDP_TLV_MED_IV_ASSET:
+						free(chassis->c_med_asset);
+						chassis->c_med_asset = b;
+						break;
+					default:
+						/* unreachable */
+						free(b);
+						break;
+					}
+					port->p_med_cap_enabled |= LLDP_MED_CAP_IV;
+					break;
+				default:
+					/* Unknown LLDP MED, ignore it */
+					hardware->h_rx_unrecognized_cnt++;
+				}
+#endif /* ENABLE_LLDPMED */
+			} else if (memcmp(dcbx, orgid, sizeof(orgid)) == 0) {
+				log_debug("lldp",
+				    "unsupported DCBX tlv received on %s - ignore",
+				    hardware->h_ifname);
+				unrecognized = 1;
+			} else {
+				log_debug("lldp",
+				    "unknown org tlv [%02x:%02x:%02x] received on %s",
+				    orgid[0], orgid[1], orgid[2], hardware->h_ifname);
+				unrecognized = 1;
+			}
+			if (unrecognized) {
+				hardware->h_rx_unrecognized_cnt++;
+#ifdef ENABLE_CUSTOM
+				custom = (struct lldpd_custom *)calloc(1,
+				    sizeof(struct lldpd_custom));
+				if (!custom) {
+					log_warn("lldp",
+					    "unable to allocate memory for custom TLV");
+					goto malformed;
+				}
+				custom->oui_info_len = tlv_size > 4 ? tlv_size - 4 : 0;
+				memcpy(custom->oui, orgid, sizeof(custom->oui));
+				custom->subtype = tlv_subtype;
+				if (custom->oui_info_len > 0) {
+					custom->oui_info = malloc(custom->oui_info_len);
+					if (!custom->oui_info) {
+						log_warn("lldp",
+						    "unable to allocate memory for custom TLV data");
+						goto malformed;
+					}
+					PEEK_BYTES(custom->oui_info,
+					    custom->oui_info_len);
+				}
+				TAILQ_INSERT_TAIL(&port->p_custom_list, custom, next);
+				custom = NULL;
+#endif
+			}
+			break;
+		default:
+			log_warnx("lldp", "unknown tlv (%d) received on %s", tlv_type,
+			    hardware->h_ifname);
+			hardware->h_rx_unrecognized_cnt++;
+			break;
+		}
+		if (pos > tlv + tlv_size) {
+			log_warnx("lldp", "BUG: already past TLV!");
+			goto malformed;
+		}
+		PEEK_DISCARD(tlv + tlv_size - pos);
+	}
+
+	/* Some random check */
+	if ((chassis->c_id == NULL) || (port->p_id == NULL) || (!ttl_received) ||
+	    (gotend == 0)) {
+		log_warnx("lldp",
+		    "some mandatory tlv are missing for frame received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	*newchassis = chassis;
+	*newport = port;
+	return 1;
+malformed:
+#ifdef ENABLE_CUSTOM
+	free(custom);
+#endif
+#ifdef ENABLE_DOT1
+	free(vlan);
+	free(pi);
+#endif
+	lldpd_chassis_cleanup(chassis, 1);
+	lldpd_port_cleanup(port, 1);
+	free(port);
+	return -1;
+}
diff --git a/src/daemon/protocols/sonmp.c b/src/daemon/protocols/sonmp.c
new file mode 100644
index 0000000..34ebcd7
--- /dev/null
+++ b/src/daemon/protocols/sonmp.c
@@ -0,0 +1,410 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "../lldpd.h"
+#include "../frame.h"
+
+#ifdef ENABLE_SONMP
+
+#  include <stdio.h>
+#  include <unistd.h>
+#  include <errno.h>
+#  include <arpa/inet.h>
+
+static struct sonmp_chassis sonmp_chassis_types[] = {
+	{ 1, "unknown (via SONMP)" },
+	{ 2, "Nortel 3000" },
+	{ 3, "Nortel 3030" },
+	{ 4, "Nortel 2310" },
+	{ 5, "Nortel 2810" },
+	{ 6, "Nortel 2912" },
+	{ 7, "Nortel 2914" },
+	{ 8, "Nortel 271x" },
+	{ 9, "Nortel 2813" },
+	{ 10, "Nortel 2814" },
+	{ 11, "Nortel 2915" },
+	{ 12, "Nortel 5000" },
+	{ 13, "Nortel 2813SA" },
+	{ 14, "Nortel 2814SA" },
+	{ 15, "Nortel 810M" },
+	{ 16, "Nortel EtherCell" },
+	{ 17, "Nortel 5005" },
+	{ 18, "Alcatel Ethernet workgroup conc." },
+	{ 20, "Nortel 2715SA" },
+	{ 21, "Nortel 2486" },
+	{ 22, "Nortel 28000 series" },
+	{ 23, "Nortel 23000 series" },
+	{ 24, "Nortel 5DN00x series" },
+	{ 25, "BayStack Ethernet" },
+	{ 26, "Nortel 23100 series" },
+	{ 27, "Nortel 100Base-T Hub" },
+	{ 28, "Nortel 3000 Fast Ethernet" },
+	{ 29, "Nortel Orion switch" },
+	{ 30, "unknown" },
+	{ 31, "Nortel DDS " },
+	{ 32, "Nortel Centillion" },
+	{ 33, "Nortel Centillion" },
+	{ 34, "Nortel Centillion" },
+	{ 35, "BayStack 301" },
+	{ 36, "BayStack TokenRing Hub" },
+	{ 37, "Nortel FVC Multimedia Switch" },
+	{ 38, "Nortel Switch Node" },
+	{ 39, "BayStack 302 Switch" },
+	{ 40, "BayStack 350 Switch" },
+	{ 41, "BayStack 150 Ethernet Hub" },
+	{ 42, "Nortel Centillion 50N switch" },
+	{ 43, "Nortel Centillion 50T switch" },
+	{ 44, "BayStack 303 and 304 Switches" },
+	{ 45, "BayStack 200 Ethernet Hub" },
+	{ 46, "BayStack 250 10/100 Ethernet Hub" },
+	{ 48, "BayStack 450 10/100/1000 Switches" },
+	{ 49, "BayStack 410 10/100 Switches" },
+	{ 50, "Nortel Ethernet Routing 1200 L3 Switch" },
+	{ 51, "Nortel Ethernet Routing 1250 L3 Switch" },
+	{ 52, "Nortel Ethernet Routing 1100 L3 Switch" },
+	{ 53, "Nortel Ethernet Routing 1150 L3 Switch" },
+	{ 54, "Nortel Ethernet Routing 1050 L3 Switch" },
+	{ 55, "Nortel Ethernet Routing 1051 L3 Switch" },
+	{ 56, "Nortel Ethernet Routing 8610 L3 Switch" },
+	{ 57, "Nortel Ethernet Routing 8606 L3 Switch" },
+	{ 58, "Nortel Ethernet Routing Switch 8010" },
+	{ 59, "Nortel Ethernet Routing Switch 8006" },
+	{ 60, "BayStack 670 wireless access point" },
+	{ 61, "Nortel Ethernet Routing Switch 740 " },
+	{ 62, "Nortel Ethernet Routing Switch 750 " },
+	{ 63, "Nortel Ethernet Routing Switch 790" },
+	{ 64, "Nortel Business Policy Switch 2000 10/100 Switches" },
+	{ 65, "Nortel Ethernet Routing 8110 L2 Switch" },
+	{ 66, "Nortel Ethernet Routing 8106 L2 Switch" },
+	{ 67, "BayStack 3580 Gig Switch" },
+	{ 68, "BayStack 10 Power Supply Unit" },
+	{ 69, "BayStack 420 10/100 Switch" },
+	{ 70, "OPTera Metro 1200 Ethernet Service Module" },
+	{ 71, "Nortel Ethernet Routing Switch 8010co" },
+	{ 72, "Nortel Ethernet Routing 8610co L3 switch" },
+	{ 73, "Nortel Ethernet Routing 8110co L2 switch" },
+	{ 74, "Nortel Ethernet Routing 8003" },
+	{ 75, "Nortel Ethernet Routing 8603 L3 switch" },
+	{ 76, "Nortel Ethernet Routing 8103 L2 switch" },
+	{ 77, "BayStack 380 10/100/1000 Switch" },
+	{ 78, "Nortel Ethernet Switch 470-48T" },
+	{ 79, "OPTera Metro 1450 Ethernet Service Module" },
+	{ 80, "OPTera Metro 1400 Ethernet Service Module" },
+	{ 81, "Alteon Switch Family" },
+	{ 82, "Ethernet Switch 460-24T-PWR" },
+	{ 83, "OPTera Metro 8010 OPM L2 Switch" },
+	{ 84, "OPTera Metro 8010co OPM L2 Switch" },
+	{ 85, "OPTera Metro 8006 OPM L2 Switch" },
+	{ 86, "OPTera Metro 8003 OPM L2 Switch" },
+	{ 87, "Alteon 180e" },
+	{ 88, "Alteon AD3" },
+	{ 89, "Alteon 184" },
+	{ 90, "Alteon AD4" },
+	{ 91, "Nortel Ethernet Routing 1424 L3 switch" },
+	{ 92, "Nortel Ethernet Routing 1648 L3 switch" },
+	{ 93, "Nortel Ethernet Routing 1612 L3 switch" },
+	{ 94, "Nortel Ethernet Routing 1624 L3 switch " },
+	{ 95, "BayStack 380-24F Fiber 1000 Switch" },
+	{ 96, "Nortel Ethernet Routing Switch 5510-24T" },
+	{ 97, "Nortel Ethernet Routing Switch 5510-48T" },
+	{ 98, "Nortel Ethernet Switch 470-24T" },
+	{ 99, "Nortel Networks Wireless LAN Access Point 2220" },
+	{ 100, "Ethernet Routing RBS 2402 L3 switch" },
+	{ 101, "Alteon Application Switch 2424  " },
+	{ 102, "Alteon Application Switch 2224 " },
+	{ 103, "Alteon Application Switch 2208 " },
+	{ 104, "Alteon Application Switch 2216" },
+	{ 105, "Alteon Application Switch 3408" },
+	{ 106, "Alteon Application Switch 3416" },
+	{ 107, "Nortel Networks Wireless LAN SecuritySwitch 2250" },
+	{ 108, "Ethernet Switch 425-48T" },
+	{ 109, "Ethernet Switch 425-24T" },
+	{ 110, "Nortel Networks Wireless LAN Access Point 2221" },
+	{ 111, "Nortel Metro Ethernet Service Unit 24-T SPF switch" },
+	{ 112, "Nortel Metro Ethernet Service Unit 24-T LX DC switch" },
+	{ 113, "Nortel Ethernet Routing Switch 8300 10-slot chassis" },
+	{ 114, "Nortel Ethernet Routing Switch 8300 6-slot chassis" },
+	{ 115, "Nortel Ethernet Routing Switch 5520-24T-PWR" },
+	{ 116, "Nortel Ethernet Routing Switch 5520-48T-PWR" },
+	{ 117, "Nortel Networks VPN Gateway 3050" },
+	{ 118, "Alteon SSL 310 10/100" },
+	{ 119, "Alteon SSL 310 10/100 Fiber" },
+	{ 120, "Alteon SSL 310 10/100 FIPS" },
+	{ 121, "Alteon SSL 410 10/100/1000" },
+	{ 122, "Alteon SSL 410 10/100/1000 Fiber" },
+	{ 123, "Alteon Application Switch 2424-SSL" },
+	{ 124, "Nortel Ethernet Switch 325-24T" },
+	{ 125, "Nortel Ethernet Switch 325-24G" },
+	{ 126, "Nortel Networks Wireless LAN Access Point 2225" },
+	{ 127, "Nortel Networks Wireless LAN SecuritySwitch 2270" },
+	{ 128, "Nortel 24-port Ethernet Switch 470-24T-PWR" },
+	{ 129, "Nortel 48-port Ethernet Switch 470-48T-PWR" },
+	{ 130, "Nortel Ethernet Routing Switch 5530-24TFD" },
+	{ 131, "Nortel Ethernet Switch 3510-24T" },
+	{ 132, "Nortel Metro Ethernet Service Unit 12G AC L3 switch" },
+	{ 133, "Nortel Metro Ethernet Service Unit 12G DC L3 switch" },
+	{ 134, "Nortel Secure Access Switch" },
+	{ 135, "Networks VPN Gateway 3070" },
+	{ 136, "OPTera Metro 3500" },
+	{ 137, "SMB BES 1010 24T" },
+	{ 138, "SMB BES 1010 48T" },
+	{ 139, "SMB BES 1020 24T PWR" },
+	{ 140, "SMB BES 1020 48T PWR" },
+	{ 141, "SMB BES 2010 24T" },
+	{ 142, "SMB BES 2010 48T" },
+	{ 143, "SMB BES 2020 24T PWR" },
+	{ 144, "SMB BES 2020 48T PWR" },
+	{ 145, "SMB BES 110 24T" },
+	{ 146, "SMB BES 110 48T" },
+	{ 147, "SMB BES 120 24T PWR" },
+	{ 148, "SMB BES 120 48T PWR" },
+	{ 149, "SMB BES 210 24T" },
+	{ 150, "SMB BES 210 48T" },
+	{ 151, "SMB BES 220 24T PWR" },
+	{ 152, "SMB BES 220 48T PWR" },
+	{ 153, "OME 6500" },
+	{ 0, "unknown (via SONMP)" },
+};
+
+int
+sonmp_send(struct lldpd *global, struct lldpd_hardware *hardware)
+{
+	const u_int8_t mcastaddr[] = SONMP_MULTICAST_ADDR;
+	const u_int8_t llcorg[] = LLC_ORG_NORTEL;
+	struct lldpd_chassis *chassis;
+	struct lldpd_mgmt *mgmt;
+	u_int8_t *packet, *pos, *pos_pid, *end;
+	int length;
+	struct in_addr address;
+
+	log_debug("sonmp", "send SONMP PDU to %s", hardware->h_ifname);
+
+	chassis = hardware->h_lport.p_chassis;
+	length = hardware->h_mtu;
+	if ((packet = (u_int8_t *)calloc(1, length)) == NULL) return ENOMEM;
+	pos = packet;
+
+	/* Ethernet header */
+	if (!(
+		/* SONMP multicast address as target */
+		POKE_BYTES(mcastaddr, sizeof(mcastaddr)) &&
+		/* Source MAC addresss */
+		POKE_BYTES(&hardware->h_lladdr, ETHER_ADDR_LEN) &&
+		/* SONMP frame is of fixed size */
+		POKE_UINT16(SONMP_SIZE)))
+		goto toobig;
+
+	/* LLC header */
+	if (!(
+		/* DSAP and SSAP */
+		POKE_UINT8(0xaa) && POKE_UINT8(0xaa) &&
+		/* Control field */
+		POKE_UINT8(0x03) &&
+		/* ORG */
+		POKE_BYTES(llcorg, sizeof(llcorg)) &&
+		POKE_SAVE(pos_pid) && /* We will modify PID later to
+					 create a new frame */
+		POKE_UINT16(LLC_PID_SONMP_HELLO)))
+		goto toobig;
+
+	address.s_addr = htonl(INADDR_ANY);
+	TAILQ_FOREACH (mgmt, &chassis->c_mgmt, m_entries) {
+		if (mgmt->m_family == LLDPD_AF_IPV4) {
+			address.s_addr = mgmt->m_addr.inet.s_addr;
+		}
+		break;
+	}
+
+	/* SONMP */
+	if (!(
+		/* Our IP address */
+		POKE_BYTES(&address, sizeof(struct in_addr)) &&
+		/* Segment on three bytes, we don't have slots, so we
+	       skip the first two bytes */
+		POKE_UINT16(0) && POKE_UINT8(hardware->h_ifindex) &&
+		POKE_UINT8(1) &&  /* Chassis: Other */
+		POKE_UINT8(12) && /* Back: Ethernet, Fast Ethernet and Gigabit */
+		POKE_UINT8(SONMP_TOPOLOGY_NEW) && /* Should work. We have no state */
+		POKE_UINT8(1) &&		  /* Links: Dunno what it is */
+		POKE_SAVE(end)))
+		goto toobig;
+
+	if (interfaces_send_helper(global, hardware, (char *)packet, end - packet) ==
+	    -1) {
+		log_warn("sonmp", "unable to send packet on real device for %s",
+		    hardware->h_ifname);
+		free(packet);
+		return ENETDOWN;
+	}
+
+	POKE_RESTORE(pos_pid); /* Modify LLC PID */
+	(void)POKE_UINT16(LLC_PID_SONMP_FLATNET);
+	POKE_RESTORE(packet);		  /* Go to the beginning */
+	PEEK_DISCARD(ETHER_ADDR_LEN - 1); /* Modify the last byte of the MAC address */
+	(void)POKE_UINT8(1);
+
+	if (interfaces_send_helper(global, hardware, (char *)packet, end - packet) ==
+	    -1) {
+		log_warn("sonmp",
+		    "unable to send second SONMP packet on real device for %s",
+		    hardware->h_ifname);
+		free(packet);
+		return ENETDOWN;
+	}
+
+	free(packet);
+	hardware->h_tx_cnt++;
+	return 0;
+toobig:
+	free(packet);
+	return -1;
+}
+
+int
+sonmp_decode(struct lldpd *cfg, char *frame, int s, struct lldpd_hardware *hardware,
+    struct lldpd_chassis **newchassis, struct lldpd_port **newport)
+{
+	const u_int8_t mcastaddr[] = SONMP_MULTICAST_ADDR;
+	struct lldpd_chassis *chassis;
+	struct lldpd_port *port;
+	struct lldpd_mgmt *mgmt;
+	int length, i;
+	u_int8_t *pos;
+	u_int8_t seg[3], rchassis;
+	struct in_addr address;
+
+	log_debug("sonmp", "decode SONMP PDU from %s", hardware->h_ifname);
+
+	if ((chassis = calloc(1, sizeof(struct lldpd_chassis))) == NULL) {
+		log_warn("sonmp", "failed to allocate remote chassis");
+		return -1;
+	}
+	TAILQ_INIT(&chassis->c_mgmt);
+	if ((port = calloc(1, sizeof(struct lldpd_port))) == NULL) {
+		log_warn("sonmp", "failed to allocate remote port");
+		free(chassis);
+		return -1;
+	}
+#  ifdef ENABLE_DOT1
+	TAILQ_INIT(&port->p_vlans);
+#  endif
+
+	length = s;
+	pos = (u_int8_t *)frame;
+	if (length < SONMP_SIZE + 2 * ETHER_ADDR_LEN + sizeof(u_int16_t)) {
+		log_warnx("sonmp", "too short SONMP frame received on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	if (PEEK_CMP(mcastaddr, sizeof(mcastaddr)) != 0)
+		/* There is two multicast address. We just handle only one of
+		 * them. */
+		goto malformed;
+	/* We skip to LLC PID */
+	PEEK_DISCARD(ETHER_ADDR_LEN);
+	PEEK_DISCARD_UINT16;
+	PEEK_DISCARD(6);
+	if (PEEK_UINT16 != LLC_PID_SONMP_HELLO) {
+		log_debug("sonmp", "incorrect LLC protocol ID received for SONMP on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+
+	chassis->c_id_subtype = LLDP_CHASSISID_SUBTYPE_ADDR;
+	if ((chassis->c_id = calloc(1, sizeof(struct in_addr) + 1)) == NULL) {
+		log_warn("sonmp", "unable to allocate memory for chassis id on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	chassis->c_id_len = sizeof(struct in_addr) + 1;
+	chassis->c_id[0] = 1;
+	PEEK_BYTES(&address, sizeof(struct in_addr));
+	memcpy(chassis->c_id + 1, &address, sizeof(struct in_addr));
+	if (asprintf(&chassis->c_name, "%s", inet_ntoa(address)) == -1) {
+		log_warnx("sonmp", "unable to write chassis name for %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	PEEK_BYTES(seg, sizeof(seg));
+	rchassis = PEEK_UINT8;
+	for (i = 0; sonmp_chassis_types[i].type != 0; i++) {
+		if (sonmp_chassis_types[i].type == rchassis) break;
+	}
+	if (asprintf(&chassis->c_descr, "%s", sonmp_chassis_types[i].description) ==
+	    -1) {
+		log_warnx("sonmp", "unable to write chassis description for %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+	mgmt = lldpd_alloc_mgmt(LLDPD_AF_IPV4, &address, sizeof(struct in_addr), 0);
+	if (mgmt == NULL) {
+		if (errno == ENOMEM)
+			log_warn("sonmp",
+			    "unable to allocate memory for management address");
+		else
+			log_warn("sonmp", "too large management address received on %s",
+			    hardware->h_ifname);
+		goto malformed;
+	}
+	TAILQ_INSERT_TAIL(&chassis->c_mgmt, mgmt, m_entries);
+	port->p_ttl =
+	    cfg ? (cfg->g_config.c_tx_interval * cfg->g_config.c_tx_hold) : LLDPD_TTL;
+	port->p_ttl = (port->p_ttl + 999) / 1000;
+
+	port->p_id_subtype = LLDP_PORTID_SUBTYPE_LOCAL;
+
+	port->p_id_len =
+	    asprintf(&port->p_id, "%02x-%02x-%02x", seg[0], seg[1], seg[2]);
+	if (port->p_id_len == -1) {
+		log_warn("sonmp", "unable to allocate memory for port id on %s",
+		    hardware->h_ifname);
+		goto malformed;
+	}
+
+	/* Port description depend on the number of segments */
+	if ((seg[0] == 0) && (seg[1] == 0)) {
+		if (asprintf(&port->p_descr, "port %d", seg[2]) == -1) {
+			log_warnx("sonmp", "unable to write port description for %s",
+			    hardware->h_ifname);
+			goto malformed;
+		}
+	} else if (seg[0] == 0) {
+		if (asprintf(&port->p_descr, "port %d/%d", seg[1], seg[2]) == -1) {
+			log_warnx("sonmp", "unable to write port description for %s",
+			    hardware->h_ifname);
+			goto malformed;
+		}
+	} else {
+		if (asprintf(&port->p_descr, "port %x:%x:%x", seg[0], seg[1], seg[2]) ==
+		    -1) {
+			log_warnx("sonmp", "unable to write port description for %s",
+			    hardware->h_ifname);
+			goto malformed;
+		}
+	}
+	*newchassis = chassis;
+	*newport = port;
+	return 1;
+
+malformed:
+	lldpd_chassis_cleanup(chassis, 1);
+	lldpd_port_cleanup(port, 1);
+	free(port);
+	return -1;
+}
+
+#endif /* ENABLE_SONMP */
diff --git a/src/daemon/protocols/sonmp.h b/src/daemon/protocols/sonmp.h
new file mode 100644
index 0000000..513c4bb
--- /dev/null
+++ b/src/daemon/protocols/sonmp.h
@@ -0,0 +1,42 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _SONMP_H
+#define _SONMP_H
+
+#define SONMP_MULTICAST_ADDR           \
+  {                                    \
+    0x01, 0x00, 0x81, 0x00, 0x01, 0x00 \
+  }
+#define LLC_ORG_NORTEL \
+  {                    \
+    0x00, 0x00, 0x81   \
+  }
+#define LLC_PID_SONMP_HELLO 0x01a2
+#define LLC_PID_SONMP_FLATNET 0x01a1
+#define SONMP_SIZE 19
+
+struct sonmp_chassis {
+	int type;
+	const char *description;
+};
+
+#define SONMP_TOPOLOGY_CHANGED 1
+#define SONMP_TOPOLOGY_UNCHANGED 2
+#define SONMP_TOPOLOGY_NEW 3
+
+#endif /* _SONMP_H */
diff --git a/src/daemon/trace.h b/src/daemon/trace.h
new file mode 100644
index 0000000..2e7c482
--- /dev/null
+++ b/src/daemon/trace.h
@@ -0,0 +1,8 @@
+#ifdef ENABLE_DTRACE
+#  include "probes.h"
+#  define TRACE(probe) probe
+#  define TRACE_ENABLED(probe) probe##_ENABLED()
+#else
+#  define TRACE(probe)
+#  define TRACE_ENABLED(probe) (0)
+#endif
diff --git a/src/daemon/usr.sbin.lldpd.in b/src/daemon/usr.sbin.lldpd.in
new file mode 100644
index 0000000..d459cd4
--- /dev/null
+++ b/src/daemon/usr.sbin.lldpd.in
@@ -0,0 +1,65 @@
+#include <tunables/global>
+
+@sbindir@/lldpd {
+  #include <abstractions/base>
+  #include <abstractions/nameservice>
+
+  capability chown,
+  capability dac_override,
+  capability fowner,
+  capability fsetid,
+  capability kill,
+  capability net_admin,
+  capability net_raw,
+  capability setgid,
+  capability setuid,
+  capability sys_chroot,
+  capability sys_module,
+
+  # Need to receive/send raw packets
+  network packet raw,
+
+  @sbindir@/lldpd mr,
+  /run/systemd/notify w,
+
+  # Ability to run lldpcli for self-configuration
+  @sbindir@/lldpcli rix,
+  @sysconfdir@/lldpd.d/ r,
+  @sysconfdir@/lldpd.d/* r,
+  @sysconfdir@/lldpd.conf r,
+
+  # PID file and socket
+  @LLDPD_PID_FILE@ rw,
+  @LLDPD_CTL_SOCKET@ rw,
+
+  # Chroot setup
+  @PRIVSEP_CHROOT@ w,
+  @PRIVSEP_CHROOT@/etc/ rw,
+  @PRIVSEP_CHROOT@/etc/localtime rw,
+
+  # Gather system description
+  /etc/os-release r,
+  /usr/lib/os-release r,
+  /usr/bin/lsb_release Cxr -> lsb_release,
+  profile lsb_release {
+    #include <abstractions/base>
+    #include <abstractions/python>
+    /usr/bin/lsb_release r,
+    /bin/dash ixr,
+    /usr/bin/dpkg-query ixr,
+    /usr/include/python2.[4567]/pyconfig.h r,
+    /etc/lsb-release r,
+    /etc/debian_version r,
+    /var/lib/dpkg/** r,
+    /usr/local/lib/python3.[0-5]/dist-packages/ r,
+    /usr/bin/ r,
+    /usr/bin/python3.[0-5] r,
+  }
+
+  # Gather network information
+  @{PROC}/sys/net/ipv4/ip_forward r,
+  @{PROC}/net/bonding/* r,
+  @{PROC}/self/net/bonding/* r,
+  /sys/devices/virtual/dmi/** r,
+  /sys/devices/pci**/net/*/ifalias r,
+}