Adding upstream version 2.2.0.upstream/2.2.0upstream

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

6 files changed, 2874 insertions, 0 deletions

diff --git a/doc/sphinx/grammar/grammar-ca-parser.rst b/doc/sphinx/grammar/grammar-ca-parser.rst
new file mode 100644
index 0000000..880d44b
--- /dev/null
+++ b/doc/sphinx/grammar/grammar-ca-parser.rst
@@ -0,0 +1,253 @@
+This grammar is generated from ``agent_parser.yy``. See :ref:`kea-ctrl-agent` for more details.
+
+.. code-block:: BNF
+   :linenos:
+
+     Grammar
+
+     $accept ::= start EOF
+
+     start ::= START_JSON json
+
+     start ::= START_AGENT agent_syntax_map
+
+     start ::= START_SUB_AGENT sub_agent
+
+     sub_agent ::= "{" global_params "}"
+
+     json ::= value
+
+     value ::= INTEGER
+          | FLOAT
+          | BOOLEAN
+          | STRING
+          | NULL
+          | map
+          | list_generic
+
+     map ::= "{" map_content "}"
+
+     map_value ::= map
+
+     map_content ::= 
+                | not_empty_map
+
+     not_empty_map ::= STRING ":" value
+                  | not_empty_map "," STRING ":" value
+                  | not_empty_map ","
+
+     list_generic ::= "[" list_content "]"
+
+     list_content ::= 
+                 | not_empty_list
+
+     not_empty_list ::= value
+                   | not_empty_list "," value
+                   | not_empty_list ","
+
+     unknown_map_entry ::= STRING ":"
+
+     agent_syntax_map ::= "{" global_object "}"
+
+     global_object ::= "Control-agent" ":" "{" global_params "}"
+                  | global_object_comma
+
+     global_object_comma ::= global_object ","
+
+     global_params ::= global_param
+                  | global_params "," global_param
+                  | global_params ","
+
+     global_param ::= http_host
+                 | http_port
+                 | trust_anchor
+                 | cert_file
+                 | key_file
+                 | cert_required
+                 | authentication
+                 | control_sockets
+                 | hooks_libraries
+                 | loggers
+                 | user_context
+                 | comment
+                 | unknown_map_entry
+
+     http_host ::= "http-host" ":" STRING
+
+     http_port ::= "http-port" ":" INTEGER
+
+     trust_anchor ::= "trust-anchor" ":" STRING
+
+     cert_file ::= "cert-file" ":" STRING
+
+     key_file ::= "key-file" ":" STRING
+
+     cert_required ::= "cert-required" ":" BOOLEAN
+
+     user_context ::= "user-context" ":" map_value
+
+     comment ::= "comment" ":" STRING
+
+     hooks_libraries ::= "hooks-libraries" ":" "[" hooks_libraries_list "]"
+
+     hooks_libraries_list ::= 
+                         | not_empty_hooks_libraries_list
+
+     not_empty_hooks_libraries_list ::= hooks_library
+                                   | not_empty_hooks_libraries_list "," hooks_library
+                                   | not_empty_hooks_libraries_list ","
+
+     hooks_library ::= "{" hooks_params "}"
+
+     hooks_params ::= hooks_param
+                 | hooks_params "," hooks_param
+                 | hooks_params ","
+                 | unknown_map_entry
+
+     hooks_param ::= library
+                | parameters
+
+     library ::= "library" ":" STRING
+
+     parameters ::= "parameters" ":" map_value
+
+     control_sockets ::= "control-sockets" ":" "{" control_sockets_params "}"
+
+     control_sockets_params ::= control_socket
+                           | control_sockets_params "," control_socket
+                           | control_sockets_params ","
+
+     control_socket ::= dhcp4_server_socket
+                   | dhcp6_server_socket
+                   | d2_server_socket
+                   | unknown_map_entry
+
+     dhcp4_server_socket ::= "dhcp4" ":" "{" control_socket_params "}"
+
+     dhcp6_server_socket ::= "dhcp6" ":" "{" control_socket_params "}"
+
+     d2_server_socket ::= "d2" ":" "{" control_socket_params "}"
+
+     control_socket_params ::= control_socket_param
+                          | control_socket_params "," control_socket_param
+                          | control_socket_params ","
+
+     control_socket_param ::= socket_name
+                         | socket_type
+                         | user_context
+                         | comment
+                         | unknown_map_entry
+
+     socket_name ::= "socket-name" ":" STRING
+
+     socket_type ::= "socket-type" ":" socket_type_value
+
+     socket_type_value ::= "unix"
+
+     authentication ::= "authentication" ":" "{" auth_params "}"
+
+     auth_params ::= auth_param
+                | auth_params "," auth_param
+                | auth_params ","
+
+     auth_param ::= auth_type
+               | realm
+               | directory
+               | clients
+               | comment
+               | user_context
+               | unknown_map_entry
+
+     auth_type ::= "type" ":" auth_type_value
+
+     auth_type_value ::= "basic"
+
+     realm ::= "realm" ":" STRING
+
+     directory ::= "directory" ":" STRING
+
+     clients ::= "clients" ":" "[" clients_list "]"
+
+     clients_list ::= 
+                 | not_empty_clients_list
+
+     not_empty_clients_list ::= basic_auth
+                           | not_empty_clients_list "," basic_auth
+                           | not_empty_clients_list ","
+
+     basic_auth ::= "{" clients_params "}"
+
+     clients_params ::= clients_param
+                   | clients_params "," clients_param
+                   | clients_params ","
+
+     clients_param ::= user
+                  | user_file
+                  | password
+                  | password_file
+                  | user_context
+                  | comment
+                  | unknown_map_entry
+
+     user ::= "user" ":" STRING
+
+     user_file ::= "user-file" ":" STRING
+
+     password ::= "password" ":" STRING
+
+     password_file ::= "password-file" ":" STRING
+
+     loggers ::= "loggers" ":" "[" loggers_entries "]"
+
+     loggers_entries ::= logger_entry
+                    | loggers_entries "," logger_entry
+                    | loggers_entries ","
+
+     logger_entry ::= "{" logger_params "}"
+
+     logger_params ::= logger_param
+                  | logger_params "," logger_param
+                  | logger_params ","
+
+     logger_param ::= name
+                 | output_options_list
+                 | debuglevel
+                 | severity
+                 | user_context
+                 | comment
+                 | unknown_map_entry
+
+     name ::= "name" ":" STRING
+
+     debuglevel ::= "debuglevel" ":" INTEGER
+
+     severity ::= "severity" ":" STRING
+
+     output_options_list ::= "output_options" ":" "[" output_options_list_content "]"
+
+     output_options_list_content ::= output_entry
+                                | output_options_list_content "," output_entry
+                                | output_options_list_content ","
+
+     output_entry ::= "{" output_params_list "}"
+
+     output_params_list ::= output_params
+                       | output_params_list "," output_params
+                       | output_params_list ","
+
+     output_params ::= output
+                  | flush
+                  | maxsize
+                  | maxver
+                  | pattern
+
+     output ::= "output" ":" STRING
+
+     flush ::= "flush" ":" BOOLEAN
+
+     maxsize ::= "maxsize" ":" INTEGER
+
+     maxver ::= "maxver" ":" INTEGER
+
+     pattern ::= "pattern" ":" STRING
+
diff --git a/doc/sphinx/grammar/grammar-d2-parser.rst b/doc/sphinx/grammar/grammar-d2-parser.rst
new file mode 100644
index 0000000..4f02ab0
--- /dev/null
+++ b/doc/sphinx/grammar/grammar-d2-parser.rst
@@ -0,0 +1,310 @@
+This grammar is generated from ``d2_parser.yy``. See :ref:`dhcp-ddns-server` for more details.
+
+.. code-block:: BNF
+   :linenos:
+
+     Grammar
+
+     $accept ::= start EOF
+
+     start ::= TOPLEVEL_JSON sub_json
+
+     start ::= TOPLEVEL_DHCPDDNS syntax_map
+
+     start ::= SUB_DHCPDDNS sub_dhcpddns
+
+     start ::= SUB_TSIG_KEY sub_tsig_key
+
+     start ::= SUB_TSIG_KEYS sub_tsig_keys
+
+     start ::= SUB_DDNS_DOMAIN sub_ddns_domain
+
+     start ::= SUB_DDNS_DOMAINS sub_ddns_domains
+
+     start ::= SUB_DNS_SERVER sub_dns_server
+
+     start ::= SUB_DNS_SERVERS sub_dns_servers
+
+     start ::= SUB_HOOKS_LIBRARY sub_hooks_library
+
+     value ::= INTEGER
+          | FLOAT
+          | BOOLEAN
+          | STRING
+          | NULL
+          | map2
+          | list_generic
+
+     sub_json ::= value
+
+     map2 ::= "{" map_content "}"
+
+     map_value ::= map2
+
+     map_content ::= 
+                | not_empty_map
+
+     not_empty_map ::= STRING ":" value
+                  | not_empty_map "," STRING ":" value
+                  | not_empty_map ","
+
+     list_generic ::= "[" list_content "]"
+
+     list_content ::= 
+                 | not_empty_list
+
+     not_empty_list ::= value
+                   | not_empty_list "," value
+                   | not_empty_list ","
+
+     unknown_map_entry ::= STRING ":"
+
+     syntax_map ::= "{" global_object "}"
+
+     global_object ::= "DhcpDdns" ":" "{" dhcpddns_params "}"
+                  | global_object_comma
+
+     global_object_comma ::= global_object ","
+
+     sub_dhcpddns ::= "{" dhcpddns_params "}"
+
+     dhcpddns_params ::= dhcpddns_param
+                    | dhcpddns_params "," dhcpddns_param
+                    | dhcpddns_params ","
+
+     dhcpddns_param ::= ip_address
+                   | port
+                   | dns_server_timeout
+                   | ncr_protocol
+                   | ncr_format
+                   | forward_ddns
+                   | reverse_ddns
+                   | tsig_keys
+                   | control_socket
+                   | hooks_libraries
+                   | loggers
+                   | user_context
+                   | comment
+                   | unknown_map_entry
+
+     ip_address ::= "ip-address" ":" STRING
+
+     port ::= "port" ":" INTEGER
+
+     dns_server_timeout ::= "dns-server-timeout" ":" INTEGER
+
+     ncr_protocol ::= "ncr-protocol" ":" ncr_protocol_value
+
+     ncr_protocol_value ::= "UDP"
+                       | "TCP"
+
+     ncr_format ::= "ncr-format" ":" "JSON"
+
+     user_context ::= "user-context" ":" map_value
+
+     comment ::= "comment" ":" STRING
+
+     forward_ddns ::= "forward-ddns" ":" "{" ddns_mgr_params "}"
+
+     reverse_ddns ::= "reverse-ddns" ":" "{" ddns_mgr_params "}"
+
+     ddns_mgr_params ::= 
+                    | not_empty_ddns_mgr_params
+
+     not_empty_ddns_mgr_params ::= ddns_mgr_param
+                              | ddns_mgr_params "," ddns_mgr_param
+                              | ddns_mgr_params ","
+
+     ddns_mgr_param ::= ddns_domains
+                   | unknown_map_entry
+
+     ddns_domains ::= "ddns-domains" ":" "[" ddns_domain_list "]"
+
+     sub_ddns_domains ::= "[" ddns_domain_list "]"
+
+     ddns_domain_list ::= 
+                     | not_empty_ddns_domain_list
+
+     not_empty_ddns_domain_list ::= ddns_domain
+                               | not_empty_ddns_domain_list "," ddns_domain
+                               | not_empty_ddns_domain_list ","
+
+     ddns_domain ::= "{" ddns_domain_params "}"
+
+     sub_ddns_domain ::= "{" ddns_domain_params "}"
+
+     ddns_domain_params ::= ddns_domain_param
+                       | ddns_domain_params "," ddns_domain_param
+                       | ddns_domain_params ","
+
+     ddns_domain_param ::= ddns_domain_name
+                      | ddns_key_name
+                      | dns_servers
+                      | user_context
+                      | comment
+                      | unknown_map_entry
+
+     ddns_domain_name ::= "name" ":" STRING
+
+     ddns_key_name ::= "key-name" ":" STRING
+
+     dns_servers ::= "dns-servers" ":" "[" dns_server_list "]"
+
+     sub_dns_servers ::= "[" dns_server_list "]"
+
+     dns_server_list ::= dns_server
+                    | dns_server_list "," dns_server
+                    | dns_server_list ","
+
+     dns_server ::= "{" dns_server_params "}"
+
+     sub_dns_server ::= "{" dns_server_params "}"
+
+     dns_server_params ::= dns_server_param
+                      | dns_server_params "," dns_server_param
+                      | dns_server_params ","
+
+     dns_server_param ::= dns_server_hostname
+                     | dns_server_ip_address
+                     | dns_server_port
+                     | ddns_key_name
+                     | user_context
+                     | comment
+                     | unknown_map_entry
+
+     dns_server_hostname ::= "hostname" ":" STRING
+
+     dns_server_ip_address ::= "ip-address" ":" STRING
+
+     dns_server_port ::= "port" ":" INTEGER
+
+     tsig_keys ::= "tsig-keys" ":" "[" tsig_keys_list "]"
+
+     sub_tsig_keys ::= "[" tsig_keys_list "]"
+
+     tsig_keys_list ::= 
+                   | not_empty_tsig_keys_list
+
+     not_empty_tsig_keys_list ::= tsig_key
+                             | not_empty_tsig_keys_list "," tsig_key
+                             | not_empty_tsig_keys_list ","
+
+     tsig_key ::= "{" tsig_key_params "}"
+
+     sub_tsig_key ::= "{" tsig_key_params "}"
+
+     tsig_key_params ::= tsig_key_param
+                    | tsig_key_params "," tsig_key_param
+                    | tsig_key_params ","
+
+     tsig_key_param ::= tsig_key_name
+                   | tsig_key_algorithm
+                   | tsig_key_digest_bits
+                   | tsig_key_secret
+                   | user_context
+                   | comment
+                   | unknown_map_entry
+
+     tsig_key_name ::= "name" ":" STRING
+
+     tsig_key_algorithm ::= "algorithm" ":" STRING
+
+     tsig_key_digest_bits ::= "digest-bits" ":" INTEGER
+
+     tsig_key_secret ::= "secret" ":" STRING
+
+     control_socket ::= "control-socket" ":" "{" control_socket_params "}"
+
+     control_socket_params ::= control_socket_param
+                          | control_socket_params "," control_socket_param
+                          | control_socket_params ","
+
+     control_socket_param ::= control_socket_type
+                         | control_socket_name
+                         | user_context
+                         | comment
+                         | unknown_map_entry
+
+     control_socket_type ::= "socket-type" ":" STRING
+
+     control_socket_name ::= "socket-name" ":" STRING
+
+     hooks_libraries ::= "hooks-libraries" ":" "[" hooks_libraries_list "]"
+
+     hooks_libraries_list ::= 
+                         | not_empty_hooks_libraries_list
+
+     not_empty_hooks_libraries_list ::= hooks_library
+                                   | not_empty_hooks_libraries_list "," hooks_library
+                                   | not_empty_hooks_libraries_list ","
+
+     hooks_library ::= "{" hooks_params "}"
+
+     sub_hooks_library ::= "{" hooks_params "}"
+
+     hooks_params ::= hooks_param
+                 | hooks_params "," hooks_param
+                 | hooks_params ","
+                 | unknown_map_entry
+
+     hooks_param ::= library
+                | parameters
+
+     library ::= "library" ":" STRING
+
+     parameters ::= "parameters" ":" map_value
+
+     loggers ::= "loggers" ":" "[" loggers_entries "]"
+
+     loggers_entries ::= logger_entry
+                    | loggers_entries "," logger_entry
+                    | loggers_entries ","
+
+     logger_entry ::= "{" logger_params "}"
+
+     logger_params ::= logger_param
+                  | logger_params "," logger_param
+                  | logger_params ","
+
+     logger_param ::= name
+                 | output_options_list
+                 | debuglevel
+                 | severity
+                 | user_context
+                 | comment
+                 | unknown_map_entry
+
+     name ::= "name" ":" STRING
+
+     debuglevel ::= "debuglevel" ":" INTEGER
+
+     severity ::= "severity" ":" STRING
+
+     output_options_list ::= "output_options" ":" "[" output_options_list_content "]"
+
+     output_options_list_content ::= output_entry
+                                | output_options_list_content "," output_entry
+                                | output_options_list_content ","
+
+     output_entry ::= "{" output_params_list "}"
+
+     output_params_list ::= output_params
+                       | output_params_list "," output_params
+                       | output_params_list ","
+
+     output_params ::= output
+                  | flush
+                  | maxsize
+                  | maxver
+                  | pattern
+
+     output ::= "output" ":" STRING
+
+     flush ::= "flush" ":" BOOLEAN
+
+     maxsize ::= "maxsize" ":" INTEGER
+
+     maxver ::= "maxver" ":" INTEGER
+
+     pattern ::= "pattern" ":" STRING
+
diff --git a/doc/sphinx/grammar/grammar-dhcp4-parser.rst b/doc/sphinx/grammar/grammar-dhcp4-parser.rst
new file mode 100644
index 0000000..94e9891
--- /dev/null
+++ b/doc/sphinx/grammar/grammar-dhcp4-parser.rst
@@ -0,0 +1,997 @@
+This grammar is generated from ``dhcp4_parser.yy``. See :ref:`dhcp4` for more details.
+
+.. code-block:: BNF
+   :linenos:
+
+     Grammar
+
+     $accept ::= start EOF
+
+     start ::= TOPLEVEL_JSON sub_json
+
+     start ::= TOPLEVEL_DHCP4 syntax_map
+
+     start ::= SUB_DHCP4 sub_dhcp4
+
+     start ::= SUB_INTERFACES4 sub_interfaces4
+
+     start ::= SUB_SUBNET4 sub_subnet4
+
+     start ::= SUB_POOL4 sub_pool4
+
+     start ::= SUB_RESERVATION sub_reservation
+
+     start ::= SUB_OPTION_DEFS sub_option_def_list
+
+     start ::= SUB_OPTION_DEF sub_option_def
+
+     start ::= SUB_OPTION_DATA sub_option_data
+
+     start ::= SUB_HOOKS_LIBRARY sub_hooks_library
+
+     start ::= SUB_DHCP_DDNS sub_dhcp_ddns
+
+     start ::= SUB_CONFIG_CONTROL sub_config_control
+
+     value ::= INTEGER
+          | FLOAT
+          | BOOLEAN
+          | STRING
+          | NULL
+          | map2
+          | list_generic
+
+     sub_json ::= value
+
+     map2 ::= "{" map_content "}"
+
+     map_value ::= map2
+
+     map_content ::= 
+                | not_empty_map
+
+     not_empty_map ::= STRING ":" value
+                  | not_empty_map "," STRING ":" value
+                  | not_empty_map ","
+
+     list_generic ::= "[" list_content "]"
+
+     list_content ::= 
+                 | not_empty_list
+
+     not_empty_list ::= value
+                   | not_empty_list "," value
+                   | not_empty_list ","
+
+     list_strings ::= "[" list_strings_content "]"
+
+     list_strings_content ::= 
+                         | not_empty_list_strings
+
+     not_empty_list_strings ::= STRING
+                           | not_empty_list_strings "," STRING
+                           | not_empty_list_strings ","
+
+     unknown_map_entry ::= STRING ":"
+
+     syntax_map ::= "{" global_object "}"
+
+     global_object ::= "Dhcp4" ":" "{" global_params "}"
+                  | global_object_comma
+
+     global_object_comma ::= global_object ","
+
+     sub_dhcp4 ::= "{" global_params "}"
+
+     global_params ::= global_param
+                  | global_params "," global_param
+                  | global_params ","
+
+     global_param ::= valid_lifetime
+                 | min_valid_lifetime
+                 | max_valid_lifetime
+                 | renew_timer
+                 | rebind_timer
+                 | decline_probation_period
+                 | subnet4_list
+                 | shared_networks
+                 | interfaces_config
+                 | lease_database
+                 | hosts_database
+                 | hosts_databases
+                 | host_reservation_identifiers
+                 | client_classes
+                 | option_def_list
+                 | option_data_list
+                 | hooks_libraries
+                 | expired_leases_processing
+                 | dhcp4o6_port
+                 | control_socket
+                 | dhcp_queue_control
+                 | dhcp_ddns
+                 | echo_client_id
+                 | match_client_id
+                 | authoritative
+                 | next_server
+                 | server_hostname
+                 | boot_file_name
+                 | user_context
+                 | comment
+                 | sanity_checks
+                 | reservations
+                 | config_control
+                 | server_tag
+                 | reservation_mode
+                 | reservations_global
+                 | reservations_in_subnet
+                 | reservations_out_of_pool
+                 | calculate_tee_times
+                 | t1_percent
+                 | t2_percent
+                 | cache_threshold
+                 | cache_max_age
+                 | loggers
+                 | hostname_char_set
+                 | hostname_char_replacement
+                 | ddns_send_updates
+                 | ddns_override_no_update
+                 | ddns_override_client_update
+                 | ddns_replace_client_name
+                 | ddns_generated_prefix
+                 | ddns_qualifying_suffix
+                 | ddns_update_on_renew
+                 | ddns_use_conflict_resolution
+                 | store_extended_info
+                 | statistic_default_sample_count
+                 | statistic_default_sample_age
+                 | dhcp_multi_threading
+                 | early_global_reservations_lookup
+                 | ip_reservations_unique
+                 | reservations_lookup_first
+                 | compatibility
+                 | parked_packet_limit
+                 | unknown_map_entry
+
+     valid_lifetime ::= "valid-lifetime" ":" INTEGER
+
+     min_valid_lifetime ::= "min-valid-lifetime" ":" INTEGER
+
+     max_valid_lifetime ::= "max-valid-lifetime" ":" INTEGER
+
+     renew_timer ::= "renew-timer" ":" INTEGER
+
+     rebind_timer ::= "rebind-timer" ":" INTEGER
+
+     calculate_tee_times ::= "calculate-tee-times" ":" BOOLEAN
+
+     t1_percent ::= "t1-percent" ":" FLOAT
+
+     t2_percent ::= "t2-percent" ":" FLOAT
+
+     cache_threshold ::= "cache-threshold" ":" FLOAT
+
+     cache_max_age ::= "cache-max-age" ":" INTEGER
+
+     decline_probation_period ::= "decline-probation-period" ":" INTEGER
+
+     server_tag ::= "server-tag" ":" STRING
+
+     parked_packet_limit ::= "parked-packet-limit" ":" INTEGER
+
+     echo_client_id ::= "echo-client-id" ":" BOOLEAN
+
+     match_client_id ::= "match-client-id" ":" BOOLEAN
+
+     authoritative ::= "authoritative" ":" BOOLEAN
+
+     ddns_send_updates ::= "ddns-send-updates" ":" BOOLEAN
+
+     ddns_override_no_update ::= "ddns-override-no-update" ":" BOOLEAN
+
+     ddns_override_client_update ::= "ddns-override-client-update" ":" BOOLEAN
+
+     ddns_replace_client_name ::= "ddns-replace-client-name" ":" ddns_replace_client_name_value
+
+     ddns_replace_client_name_value ::= "when-present"
+                                   | "never"
+                                   | "always"
+                                   | "when-not-present"
+                                   | BOOLEAN
+
+     ddns_generated_prefix ::= "ddns-generated-prefix" ":" STRING
+
+     ddns_qualifying_suffix ::= "ddns-qualifying-suffix" ":" STRING
+
+     ddns_update_on_renew ::= "ddns-update-on-renew" ":" BOOLEAN
+
+     ddns_use_conflict_resolution ::= "ddns-use-conflict-resolution" ":" BOOLEAN
+
+     hostname_char_set ::= "hostname-char-set" ":" STRING
+
+     hostname_char_replacement ::= "hostname-char-replacement" ":" STRING
+
+     store_extended_info ::= "store-extended-info" ":" BOOLEAN
+
+     statistic_default_sample_count ::= "statistic-default-sample-count" ":" INTEGER
+
+     statistic_default_sample_age ::= "statistic-default-sample-age" ":" INTEGER
+
+     early_global_reservations_lookup ::= "early-global-reservations-lookup" ":" BOOLEAN
+
+     ip_reservations_unique ::= "ip-reservations-unique" ":" BOOLEAN
+
+     reservations_lookup_first ::= "reservations-lookup-first" ":" BOOLEAN
+
+     interfaces_config ::= "interfaces-config" ":" "{" interfaces_config_params "}"
+
+     interfaces_config_params ::= interfaces_config_param
+                             | interfaces_config_params "," interfaces_config_param
+                             | interfaces_config_params ","
+
+     interfaces_config_param ::= interfaces_list
+                            | dhcp_socket_type
+                            | outbound_interface
+                            | re_detect
+                            | service_sockets_require_all
+                            | service_sockets_retry_wait_time
+                            | service_sockets_max_retries
+                            | user_context
+                            | comment
+                            | unknown_map_entry
+
+     sub_interfaces4 ::= "{" interfaces_config_params "}"
+
+     interfaces_list ::= "interfaces" ":" list_strings
+
+     dhcp_socket_type ::= "dhcp-socket-type" ":" socket_type
+
+     socket_type ::= "raw"
+                | "udp"
+
+     outbound_interface ::= "outbound-interface" ":" outbound_interface_value
+
+     outbound_interface_value ::= "same-as-inbound"
+                             | "use-routing"
+
+     re_detect ::= "re-detect" ":" BOOLEAN
+
+     service_sockets_require_all ::= "service-sockets-require-all" ":" BOOLEAN
+
+     service_sockets_retry_wait_time ::= "service-sockets-retry-wait-time" ":" INTEGER
+
+     service_sockets_max_retries ::= "service-sockets-max-retries" ":" INTEGER
+
+     lease_database ::= "lease-database" ":" "{" database_map_params "}"
+
+     sanity_checks ::= "sanity-checks" ":" "{" sanity_checks_params "}"
+
+     sanity_checks_params ::= sanity_checks_param
+                         | sanity_checks_params "," sanity_checks_param
+                         | sanity_checks_params ","
+
+     sanity_checks_param ::= lease_checks
+
+     lease_checks ::= "lease-checks" ":" STRING
+
+     hosts_database ::= "hosts-database" ":" "{" database_map_params "}"
+
+     hosts_databases ::= "hosts-databases" ":" "[" database_list "]"
+
+     database_list ::= 
+                  | not_empty_database_list
+
+     not_empty_database_list ::= database
+                            | not_empty_database_list "," database
+                            | not_empty_database_list ","
+
+     database ::= "{" database_map_params "}"
+
+     database_map_params ::= database_map_param
+                        | database_map_params "," database_map_param
+                        | database_map_params ","
+
+     database_map_param ::= database_type
+                       | user
+                       | password
+                       | host
+                       | port
+                       | name
+                       | persist
+                       | lfc_interval
+                       | readonly
+                       | connect_timeout
+                       | max_reconnect_tries
+                       | reconnect_wait_time
+                       | on_fail
+                       | max_row_errors
+                       | trust_anchor
+                       | cert_file
+                       | key_file
+                       | cipher_list
+                       | unknown_map_entry
+
+     database_type ::= "type" ":" db_type
+
+     db_type ::= "memfile"
+            | "mysql"
+            | "postgresql"
+
+     user ::= "user" ":" STRING
+
+     password ::= "password" ":" STRING
+
+     host ::= "host" ":" STRING
+
+     port ::= "port" ":" INTEGER
+
+     name ::= "name" ":" STRING
+
+     persist ::= "persist" ":" BOOLEAN
+
+     lfc_interval ::= "lfc-interval" ":" INTEGER
+
+     readonly ::= "readonly" ":" BOOLEAN
+
+     connect_timeout ::= "connect-timeout" ":" INTEGER
+
+     max_reconnect_tries ::= "max-reconnect-tries" ":" INTEGER
+
+     reconnect_wait_time ::= "reconnect-wait-time" ":" INTEGER
+
+     on_fail ::= "on-fail" ":" on_fail_mode
+
+     on_fail_mode ::= "stop-retry-exit"
+                 | "serve-retry-exit"
+                 | "serve-retry-continue"
+
+     max_row_errors ::= "max-row-errors" ":" INTEGER
+
+     trust_anchor ::= "trust-anchor" ":" STRING
+
+     cert_file ::= "cert-file" ":" STRING
+
+     key_file ::= "key-file" ":" STRING
+
+     cipher_list ::= "cipher-list" ":" STRING
+
+     host_reservation_identifiers ::= "host-reservation-identifiers" ":" "[" host_reservation_identifiers_list "]"
+
+     host_reservation_identifiers_list ::= host_reservation_identifier
+                                      | host_reservation_identifiers_list "," host_reservation_identifier
+                                      | host_reservation_identifiers_list ","
+
+     host_reservation_identifier ::= duid_id
+                                | hw_address_id
+                                | circuit_id
+                                | client_id
+                                | flex_id
+
+     duid_id ::= "duid"
+
+     hw_address_id ::= "hw-address"
+
+     circuit_id ::= "circuit-id"
+
+     client_id ::= "client-id"
+
+     flex_id ::= "flex-id"
+
+     dhcp_multi_threading ::= "multi-threading" ":" "{" multi_threading_params "}"
+
+     multi_threading_params ::= multi_threading_param
+                           | multi_threading_params "," multi_threading_param
+                           | multi_threading_params ","
+
+     multi_threading_param ::= enable_multi_threading
+                          | thread_pool_size
+                          | packet_queue_size
+                          | user_context
+                          | comment
+                          | unknown_map_entry
+
+     enable_multi_threading ::= "enable-multi-threading" ":" BOOLEAN
+
+     thread_pool_size ::= "thread-pool-size" ":" INTEGER
+
+     packet_queue_size ::= "packet-queue-size" ":" INTEGER
+
+     hooks_libraries ::= "hooks-libraries" ":" "[" hooks_libraries_list "]"
+
+     hooks_libraries_list ::= 
+                         | not_empty_hooks_libraries_list
+
+     not_empty_hooks_libraries_list ::= hooks_library
+                                   | not_empty_hooks_libraries_list "," hooks_library
+                                   | not_empty_hooks_libraries_list ","
+
+     hooks_library ::= "{" hooks_params "}"
+
+     sub_hooks_library ::= "{" hooks_params "}"
+
+     hooks_params ::= hooks_param
+                 | hooks_params "," hooks_param
+                 | hooks_params ","
+                 | unknown_map_entry
+
+     hooks_param ::= library
+                | parameters
+
+     library ::= "library" ":" STRING
+
+     parameters ::= "parameters" ":" map_value
+
+     expired_leases_processing ::= "expired-leases-processing" ":" "{" expired_leases_params "}"
+
+     expired_leases_params ::= expired_leases_param
+                          | expired_leases_params "," expired_leases_param
+                          | expired_leases_params ","
+
+     expired_leases_param ::= reclaim_timer_wait_time
+                         | flush_reclaimed_timer_wait_time
+                         | hold_reclaimed_time
+                         | max_reclaim_leases
+                         | max_reclaim_time
+                         | unwarned_reclaim_cycles
+
+     reclaim_timer_wait_time ::= "reclaim-timer-wait-time" ":" INTEGER
+
+     flush_reclaimed_timer_wait_time ::= "flush-reclaimed-timer-wait-time" ":" INTEGER
+
+     hold_reclaimed_time ::= "hold-reclaimed-time" ":" INTEGER
+
+     max_reclaim_leases ::= "max-reclaim-leases" ":" INTEGER
+
+     max_reclaim_time ::= "max-reclaim-time" ":" INTEGER
+
+     unwarned_reclaim_cycles ::= "unwarned-reclaim-cycles" ":" INTEGER
+
+     subnet4_list ::= "subnet4" ":" "[" subnet4_list_content "]"
+
+     subnet4_list_content ::= 
+                         | not_empty_subnet4_list
+
+     not_empty_subnet4_list ::= subnet4
+                           | not_empty_subnet4_list "," subnet4
+                           | not_empty_subnet4_list ","
+
+     subnet4 ::= "{" subnet4_params "}"
+
+     sub_subnet4 ::= "{" subnet4_params "}"
+
+     subnet4_params ::= subnet4_param
+                   | subnet4_params "," subnet4_param
+                   | subnet4_params ","
+
+     subnet4_param ::= valid_lifetime
+                  | min_valid_lifetime
+                  | max_valid_lifetime
+                  | renew_timer
+                  | rebind_timer
+                  | option_data_list
+                  | pools_list
+                  | subnet
+                  | interface
+                  | id
+                  | client_class
+                  | require_client_classes
+                  | reservations
+                  | reservation_mode
+                  | reservations_global
+                  | reservations_in_subnet
+                  | reservations_out_of_pool
+                  | relay
+                  | match_client_id
+                  | authoritative
+                  | next_server
+                  | server_hostname
+                  | boot_file_name
+                  | subnet_4o6_interface
+                  | subnet_4o6_interface_id
+                  | subnet_4o6_subnet
+                  | user_context
+                  | comment
+                  | calculate_tee_times
+                  | t1_percent
+                  | t2_percent
+                  | cache_threshold
+                  | cache_max_age
+                  | ddns_send_updates
+                  | ddns_override_no_update
+                  | ddns_override_client_update
+                  | ddns_replace_client_name
+                  | ddns_generated_prefix
+                  | ddns_qualifying_suffix
+                  | ddns_update_on_renew
+                  | ddns_use_conflict_resolution
+                  | hostname_char_set
+                  | hostname_char_replacement
+                  | store_extended_info
+                  | unknown_map_entry
+
+     subnet ::= "subnet" ":" STRING
+
+     subnet_4o6_interface ::= "4o6-interface" ":" STRING
+
+     subnet_4o6_interface_id ::= "4o6-interface-id" ":" STRING
+
+     subnet_4o6_subnet ::= "4o6-subnet" ":" STRING
+
+     interface ::= "interface" ":" STRING
+
+     client_class ::= "client-class" ":" STRING
+
+     require_client_classes ::= "require-client-classes" ":" list_strings
+
+     reservations_global ::= "reservations-global" ":" BOOLEAN
+
+     reservations_in_subnet ::= "reservations-in-subnet" ":" BOOLEAN
+
+     reservations_out_of_pool ::= "reservations-out-of-pool" ":" BOOLEAN
+
+     reservation_mode ::= "reservation-mode" ":" hr_mode
+
+     hr_mode ::= "disabled"
+            | "out-of-pool"
+            | "global"
+            | "all"
+
+     id ::= "id" ":" INTEGER
+
+     shared_networks ::= "shared-networks" ":" "[" shared_networks_content "]"
+
+     shared_networks_content ::= 
+                            | shared_networks_list
+
+     shared_networks_list ::= shared_network
+                         | shared_networks_list "," shared_network
+                         | shared_networks_list ","
+
+     shared_network ::= "{" shared_network_params "}"
+
+     shared_network_params ::= shared_network_param
+                          | shared_network_params "," shared_network_param
+                          | shared_network_params ","
+
+     shared_network_param ::= name
+                         | subnet4_list
+                         | interface
+                         | renew_timer
+                         | rebind_timer
+                         | option_data_list
+                         | match_client_id
+                         | authoritative
+                         | next_server
+                         | server_hostname
+                         | boot_file_name
+                         | relay
+                         | reservation_mode
+                         | reservations_global
+                         | reservations_in_subnet
+                         | reservations_out_of_pool
+                         | client_class
+                         | require_client_classes
+                         | valid_lifetime
+                         | min_valid_lifetime
+                         | max_valid_lifetime
+                         | user_context
+                         | comment
+                         | calculate_tee_times
+                         | t1_percent
+                         | t2_percent
+                         | cache_threshold
+                         | cache_max_age
+                         | ddns_send_updates
+                         | ddns_override_no_update
+                         | ddns_override_client_update
+                         | ddns_replace_client_name
+                         | ddns_generated_prefix
+                         | ddns_qualifying_suffix
+                         | ddns_update_on_renew
+                         | ddns_use_conflict_resolution
+                         | hostname_char_set
+                         | hostname_char_replacement
+                         | store_extended_info
+                         | unknown_map_entry
+
+     option_def_list ::= "option-def" ":" "[" option_def_list_content "]"
+
+     sub_option_def_list ::= "{" option_def_list "}"
+
+     option_def_list_content ::= 
+                            | not_empty_option_def_list
+
+     not_empty_option_def_list ::= option_def_entry
+                              | not_empty_option_def_list "," option_def_entry
+                              | not_empty_option_def_list ","
+
+     option_def_entry ::= "{" option_def_params "}"
+
+     sub_option_def ::= "{" option_def_params "}"
+
+     option_def_params ::= 
+                      | not_empty_option_def_params
+
+     not_empty_option_def_params ::= option_def_param
+                                | not_empty_option_def_params "," option_def_param
+                                | not_empty_option_def_params ","
+
+     option_def_param ::= option_def_name
+                     | option_def_code
+                     | option_def_type
+                     | option_def_record_types
+                     | option_def_space
+                     | option_def_encapsulate
+                     | option_def_array
+                     | user_context
+                     | comment
+                     | unknown_map_entry
+
+     option_def_name ::= name
+
+     code ::= "code" ":" INTEGER
+
+     option_def_code ::= code
+
+     option_def_type ::= "type" ":" STRING
+
+     option_def_record_types ::= "record-types" ":" STRING
+
+     space ::= "space" ":" STRING
+
+     option_def_space ::= space
+
+     option_def_encapsulate ::= "encapsulate" ":" STRING
+
+     option_def_array ::= "array" ":" BOOLEAN
+
+     option_data_list ::= "option-data" ":" "[" option_data_list_content "]"
+
+     option_data_list_content ::= 
+                             | not_empty_option_data_list
+
+     not_empty_option_data_list ::= option_data_entry
+                               | not_empty_option_data_list "," option_data_entry
+                               | not_empty_option_data_list ","
+
+     option_data_entry ::= "{" option_data_params "}"
+
+     sub_option_data ::= "{" option_data_params "}"
+
+     option_data_params ::= 
+                       | not_empty_option_data_params
+
+     not_empty_option_data_params ::= option_data_param
+                                 | not_empty_option_data_params "," option_data_param
+                                 | not_empty_option_data_params ","
+
+     option_data_param ::= option_data_name
+                      | option_data_data
+                      | option_data_code
+                      | option_data_space
+                      | option_data_csv_format
+                      | option_data_always_send
+                      | user_context
+                      | comment
+                      | unknown_map_entry
+
+     option_data_name ::= name
+
+     option_data_data ::= "data" ":" STRING
+
+     option_data_code ::= code
+
+     option_data_space ::= space
+
+     option_data_csv_format ::= "csv-format" ":" BOOLEAN
+
+     option_data_always_send ::= "always-send" ":" BOOLEAN
+
+     pools_list ::= "pools" ":" "[" pools_list_content "]"
+
+     pools_list_content ::= 
+                       | not_empty_pools_list
+
+     not_empty_pools_list ::= pool_list_entry
+                         | not_empty_pools_list "," pool_list_entry
+                         | not_empty_pools_list ","
+
+     pool_list_entry ::= "{" pool_params "}"
+
+     sub_pool4 ::= "{" pool_params "}"
+
+     pool_params ::= pool_param
+                | pool_params "," pool_param
+                | pool_params ","
+
+     pool_param ::= pool_entry
+               | option_data_list
+               | client_class
+               | require_client_classes
+               | user_context
+               | comment
+               | unknown_map_entry
+
+     pool_entry ::= "pool" ":" STRING
+
+     user_context ::= "user-context" ":" map_value
+
+     comment ::= "comment" ":" STRING
+
+     reservations ::= "reservations" ":" "[" reservations_list "]"
+
+     reservations_list ::= 
+                      | not_empty_reservations_list
+
+     not_empty_reservations_list ::= reservation
+                                | not_empty_reservations_list "," reservation
+                                | not_empty_reservations_list ","
+
+     reservation ::= "{" reservation_params "}"
+
+     sub_reservation ::= "{" reservation_params "}"
+
+     reservation_params ::= 
+                       | not_empty_reservation_params
+
+     not_empty_reservation_params ::= reservation_param
+                                 | not_empty_reservation_params "," reservation_param
+                                 | not_empty_reservation_params ","
+
+     reservation_param ::= duid
+                      | reservation_client_classes
+                      | client_id_value
+                      | circuit_id_value
+                      | flex_id_value
+                      | ip_address
+                      | hw_address
+                      | hostname
+                      | option_data_list
+                      | next_server
+                      | server_hostname
+                      | boot_file_name
+                      | user_context
+                      | comment
+                      | unknown_map_entry
+
+     next_server ::= "next-server" ":" STRING
+
+     server_hostname ::= "server-hostname" ":" STRING
+
+     boot_file_name ::= "boot-file-name" ":" STRING
+
+     ip_address ::= "ip-address" ":" STRING
+
+     ip_addresses ::= "ip-addresses" ":" list_strings
+
+     duid ::= "duid" ":" STRING
+
+     hw_address ::= "hw-address" ":" STRING
+
+     client_id_value ::= "client-id" ":" STRING
+
+     circuit_id_value ::= "circuit-id" ":" STRING
+
+     flex_id_value ::= "flex-id" ":" STRING
+
+     hostname ::= "hostname" ":" STRING
+
+     reservation_client_classes ::= "client-classes" ":" list_strings
+
+     relay ::= "relay" ":" "{" relay_map "}"
+
+     relay_map ::= ip_address
+              | ip_addresses
+
+     client_classes ::= "client-classes" ":" "[" client_classes_list "]"
+
+     client_classes_list ::= client_class_entry
+                        | client_classes_list "," client_class_entry
+                        | client_classes_list ","
+
+     client_class_entry ::= "{" client_class_params "}"
+
+     client_class_params ::= 
+                        | not_empty_client_class_params
+
+     not_empty_client_class_params ::= client_class_param
+                                  | not_empty_client_class_params "," client_class_param
+                                  | not_empty_client_class_params ","
+
+     client_class_param ::= client_class_name
+                       | client_class_test
+                       | only_if_required
+                       | option_def_list
+                       | option_data_list
+                       | next_server
+                       | server_hostname
+                       | boot_file_name
+                       | user_context
+                       | comment
+                       | unknown_map_entry
+                       | valid_lifetime
+                       | min_valid_lifetime
+                       | max_valid_lifetime
+
+     client_class_name ::= name
+
+     client_class_test ::= "test" ":" STRING
+
+     only_if_required ::= "only-if-required" ":" BOOLEAN
+
+     dhcp4o6_port ::= "dhcp4o6-port" ":" INTEGER
+
+     control_socket ::= "control-socket" ":" "{" control_socket_params "}"
+
+     control_socket_params ::= control_socket_param
+                          | control_socket_params "," control_socket_param
+                          | control_socket_params ","
+
+     control_socket_param ::= control_socket_type
+                         | control_socket_name
+                         | user_context
+                         | comment
+                         | unknown_map_entry
+
+     control_socket_type ::= "socket-type" ":" STRING
+
+     control_socket_name ::= "socket-name" ":" STRING
+
+     dhcp_queue_control ::= "dhcp-queue-control" ":" "{" queue_control_params "}"
+
+     queue_control_params ::= queue_control_param
+                         | queue_control_params "," queue_control_param
+                         | queue_control_params ","
+
+     queue_control_param ::= enable_queue
+                        | queue_type
+                        | capacity
+                        | user_context
+                        | comment
+                        | arbitrary_map_entry
+
+     enable_queue ::= "enable-queue" ":" BOOLEAN
+
+     queue_type ::= "queue-type" ":" STRING
+
+     capacity ::= "capacity" ":" INTEGER
+
+     arbitrary_map_entry ::= STRING ":" value
+
+     dhcp_ddns ::= "dhcp-ddns" ":" "{" dhcp_ddns_params "}"
+
+     sub_dhcp_ddns ::= "{" dhcp_ddns_params "}"
+
+     dhcp_ddns_params ::= dhcp_ddns_param
+                     | dhcp_ddns_params "," dhcp_ddns_param
+                     | dhcp_ddns_params ","
+
+     dhcp_ddns_param ::= enable_updates
+                    | server_ip
+                    | server_port
+                    | sender_ip
+                    | sender_port
+                    | max_queue_size
+                    | ncr_protocol
+                    | ncr_format
+                    | dep_override_no_update
+                    | dep_override_client_update
+                    | dep_replace_client_name
+                    | dep_generated_prefix
+                    | dep_qualifying_suffix
+                    | dep_hostname_char_set
+                    | dep_hostname_char_replacement
+                    | user_context
+                    | comment
+                    | unknown_map_entry
+
+     enable_updates ::= "enable-updates" ":" BOOLEAN
+
+     server_ip ::= "server-ip" ":" STRING
+
+     server_port ::= "server-port" ":" INTEGER
+
+     sender_ip ::= "sender-ip" ":" STRING
+
+     sender_port ::= "sender-port" ":" INTEGER
+
+     max_queue_size ::= "max-queue-size" ":" INTEGER
+
+     ncr_protocol ::= "ncr-protocol" ":" ncr_protocol_value
+
+     ncr_protocol_value ::= "udp"
+                       | "tcp"
+
+     ncr_format ::= "ncr-format" ":" "JSON"
+
+     dep_qualifying_suffix ::= "qualifying-suffix" ":" STRING
+
+     dep_override_no_update ::= "override-no-update" ":" BOOLEAN
+
+     dep_override_client_update ::= "override-client-update" ":" BOOLEAN
+
+     dep_replace_client_name ::= "replace-client-name" ":" ddns_replace_client_name_value
+
+     dep_generated_prefix ::= "generated-prefix" ":" STRING
+
+     dep_hostname_char_set ::= "hostname-char-set" ":" STRING
+
+     dep_hostname_char_replacement ::= "hostname-char-replacement" ":" STRING
+
+     config_control ::= "config-control" ":" "{" config_control_params "}"
+
+     sub_config_control ::= "{" config_control_params "}"
+
+     config_control_params ::= config_control_param
+                          | config_control_params "," config_control_param
+                          | config_control_params ","
+
+     config_control_param ::= config_databases
+                         | config_fetch_wait_time
+
+     config_databases ::= "config-databases" ":" "[" database_list "]"
+
+     config_fetch_wait_time ::= "config-fetch-wait-time" ":" INTEGER
+
+     loggers ::= "loggers" ":" "[" loggers_entries "]"
+
+     loggers_entries ::= logger_entry
+                    | loggers_entries "," logger_entry
+                    | loggers_entries ","
+
+     logger_entry ::= "{" logger_params "}"
+
+     logger_params ::= logger_param
+                  | logger_params "," logger_param
+                  | logger_params ","
+
+     logger_param ::= name
+                 | output_options_list
+                 | debuglevel
+                 | severity
+                 | user_context
+                 | comment
+                 | unknown_map_entry
+
+     debuglevel ::= "debuglevel" ":" INTEGER
+
+     severity ::= "severity" ":" STRING
+
+     output_options_list ::= "output_options" ":" "[" output_options_list_content "]"
+
+     output_options_list_content ::= output_entry
+                                | output_options_list_content "," output_entry
+                                | output_options_list_content ","
+
+     output_entry ::= "{" output_params_list "}"
+
+     output_params_list ::= output_params
+                       | output_params_list "," output_params
+                       | output_params_list ","
+
+     output_params ::= output
+                  | flush
+                  | maxsize
+                  | maxver
+                  | pattern
+
+     output ::= "output" ":" STRING
+
+     flush ::= "flush" ":" BOOLEAN
+
+     maxsize ::= "maxsize" ":" INTEGER
+
+     maxver ::= "maxver" ":" INTEGER
+
+     pattern ::= "pattern" ":" STRING
+
+     compatibility ::= "compatibility" ":" "{" compatibility_params "}"
+
+     compatibility_params ::= compatibility_param
+                         | compatibility_params "," compatibility_param
+                         | compatibility_params ","
+
+     compatibility_param ::= lenient_option_parsing
+                        | unknown_map_entry
+
+     lenient_option_parsing ::= "lenient-option-parsing" ":" BOOLEAN
+
diff --git a/doc/sphinx/grammar/grammar-dhcp6-parser.rst b/doc/sphinx/grammar/grammar-dhcp6-parser.rst
new file mode 100644
index 0000000..b9d4b79
--- /dev/null
+++ b/doc/sphinx/grammar/grammar-dhcp6-parser.rst
@@ -0,0 +1,1049 @@
+This grammar is generated from ``dhcp6_parser.yy``. See :ref:`dhcp6` for more details.
+
+.. code-block:: BNF
+   :linenos:
+
+     Grammar
+
+     $accept ::= start EOF
+
+     start ::= TOPLEVEL_JSON sub_json
+
+     start ::= TOPLEVEL_DHCP6 syntax_map
+
+     start ::= SUB_DHCP6 sub_dhcp6
+
+     start ::= SUB_INTERFACES6 sub_interfaces6
+
+     start ::= SUB_SUBNET6 sub_subnet6
+
+     start ::= SUB_POOL6 sub_pool6
+
+     start ::= SUB_PD_POOL sub_pd_pool
+
+     start ::= SUB_RESERVATION sub_reservation
+
+     start ::= SUB_OPTION_DEFS sub_option_def_list
+
+     start ::= SUB_OPTION_DEF sub_option_def
+
+     start ::= SUB_OPTION_DATA sub_option_data
+
+     start ::= SUB_HOOKS_LIBRARY sub_hooks_library
+
+     start ::= SUB_DHCP_DDNS sub_dhcp_ddns
+
+     start ::= SUB_CONFIG_CONTROL sub_config_control
+
+     value ::= INTEGER
+          | FLOAT
+          | BOOLEAN
+          | STRING
+          | NULL
+          | map2
+          | list_generic
+
+     sub_json ::= value
+
+     map2 ::= "{" map_content "}"
+
+     map_value ::= map2
+
+     map_content ::= 
+                | not_empty_map
+
+     not_empty_map ::= STRING ":" value
+                  | not_empty_map "," STRING ":" value
+                  | not_empty_map ","
+
+     list_generic ::= "[" list_content "]"
+
+     list_content ::= 
+                 | not_empty_list
+
+     not_empty_list ::= value
+                   | not_empty_list "," value
+                   | not_empty_list ","
+
+     list_strings ::= "[" list_strings_content "]"
+
+     list_strings_content ::= 
+                         | not_empty_list_strings
+
+     not_empty_list_strings ::= STRING
+                           | not_empty_list_strings "," STRING
+                           | not_empty_list_strings ","
+
+     unknown_map_entry ::= STRING ":"
+
+     syntax_map ::= "{" global_object "}"
+
+     global_object ::= "Dhcp6" ":" "{" global_params "}"
+                  | global_object_comma
+
+     global_object_comma ::= global_object ","
+
+     sub_dhcp6 ::= "{" global_params "}"
+
+     global_params ::= global_param
+                  | global_params "," global_param
+                  | global_params ","
+
+     global_param ::= data_directory
+                 | preferred_lifetime
+                 | min_preferred_lifetime
+                 | max_preferred_lifetime
+                 | valid_lifetime
+                 | min_valid_lifetime
+                 | max_valid_lifetime
+                 | renew_timer
+                 | rebind_timer
+                 | decline_probation_period
+                 | subnet6_list
+                 | shared_networks
+                 | interfaces_config
+                 | lease_database
+                 | hosts_database
+                 | hosts_databases
+                 | mac_sources
+                 | relay_supplied_options
+                 | host_reservation_identifiers
+                 | client_classes
+                 | option_def_list
+                 | option_data_list
+                 | hooks_libraries
+                 | expired_leases_processing
+                 | server_id
+                 | dhcp4o6_port
+                 | control_socket
+                 | dhcp_queue_control
+                 | dhcp_ddns
+                 | user_context
+                 | comment
+                 | sanity_checks
+                 | reservations
+                 | config_control
+                 | server_tag
+                 | reservation_mode
+                 | reservations_global
+                 | reservations_in_subnet
+                 | reservations_out_of_pool
+                 | calculate_tee_times
+                 | t1_percent
+                 | t2_percent
+                 | cache_threshold
+                 | cache_max_age
+                 | loggers
+                 | hostname_char_set
+                 | hostname_char_replacement
+                 | ddns_send_updates
+                 | ddns_override_no_update
+                 | ddns_override_client_update
+                 | ddns_replace_client_name
+                 | ddns_generated_prefix
+                 | ddns_qualifying_suffix
+                 | ddns_update_on_renew
+                 | ddns_use_conflict_resolution
+                 | store_extended_info
+                 | statistic_default_sample_count
+                 | statistic_default_sample_age
+                 | dhcp_multi_threading
+                 | early_global_reservations_lookup
+                 | ip_reservations_unique
+                 | reservations_lookup_first
+                 | compatibility
+                 | parked_packet_limit
+                 | unknown_map_entry
+
+     data_directory ::= "data-directory" ":" STRING
+
+     preferred_lifetime ::= "preferred-lifetime" ":" INTEGER
+
+     min_preferred_lifetime ::= "min-preferred-lifetime" ":" INTEGER
+
+     max_preferred_lifetime ::= "max-preferred-lifetime" ":" INTEGER
+
+     valid_lifetime ::= "valid-lifetime" ":" INTEGER
+
+     min_valid_lifetime ::= "min-valid-lifetime" ":" INTEGER
+
+     max_valid_lifetime ::= "max-valid-lifetime" ":" INTEGER
+
+     renew_timer ::= "renew-timer" ":" INTEGER
+
+     rebind_timer ::= "rebind-timer" ":" INTEGER
+
+     calculate_tee_times ::= "calculate-tee-times" ":" BOOLEAN
+
+     t1_percent ::= "t1-percent" ":" FLOAT
+
+     t2_percent ::= "t2-percent" ":" FLOAT
+
+     cache_threshold ::= "cache-threshold" ":" FLOAT
+
+     cache_max_age ::= "cache-max-age" ":" INTEGER
+
+     decline_probation_period ::= "decline-probation-period" ":" INTEGER
+
+     ddns_send_updates ::= "ddns-send-updates" ":" BOOLEAN
+
+     ddns_override_no_update ::= "ddns-override-no-update" ":" BOOLEAN
+
+     ddns_override_client_update ::= "ddns-override-client-update" ":" BOOLEAN
+
+     ddns_replace_client_name ::= "ddns-replace-client-name" ":" ddns_replace_client_name_value
+
+     ddns_replace_client_name_value ::= "when-present"
+                                   | "never"
+                                   | "always"
+                                   | "when-not-present"
+                                   | BOOLEAN
+
+     ddns_generated_prefix ::= "ddns-generated-prefix" ":" STRING
+
+     ddns_qualifying_suffix ::= "ddns-qualifying-suffix" ":" STRING
+
+     ddns_update_on_renew ::= "ddns-update-on-renew" ":" BOOLEAN
+
+     ddns_use_conflict_resolution ::= "ddns-use-conflict-resolution" ":" BOOLEAN
+
+     hostname_char_set ::= "hostname-char-set" ":" STRING
+
+     hostname_char_replacement ::= "hostname-char-replacement" ":" STRING
+
+     store_extended_info ::= "store-extended-info" ":" BOOLEAN
+
+     statistic_default_sample_count ::= "statistic-default-sample-count" ":" INTEGER
+
+     statistic_default_sample_age ::= "statistic-default-sample-age" ":" INTEGER
+
+     server_tag ::= "server-tag" ":" STRING
+
+     parked_packet_limit ::= "parked-packet-limit" ":" INTEGER
+
+     early_global_reservations_lookup ::= "early-global-reservations-lookup" ":" BOOLEAN
+
+     ip_reservations_unique ::= "ip-reservations-unique" ":" BOOLEAN
+
+     reservations_lookup_first ::= "reservations-lookup-first" ":" BOOLEAN
+
+     interfaces_config ::= "interfaces-config" ":" "{" interfaces_config_params "}"
+
+     sub_interfaces6 ::= "{" interfaces_config_params "}"
+
+     interfaces_config_params ::= interfaces_config_param
+                             | interfaces_config_params "," interfaces_config_param
+                             | interfaces_config_params ","
+
+     interfaces_config_param ::= interfaces_list
+                            | re_detect
+                            | service_sockets_require_all
+                            | service_sockets_retry_wait_time
+                            | service_sockets_max_retries
+                            | user_context
+                            | comment
+                            | unknown_map_entry
+
+     interfaces_list ::= "interfaces" ":" list_strings
+
+     re_detect ::= "re-detect" ":" BOOLEAN
+
+     service_sockets_require_all ::= "service-sockets-require-all" ":" BOOLEAN
+
+     service_sockets_retry_wait_time ::= "service-sockets-retry-wait-time" ":" INTEGER
+
+     service_sockets_max_retries ::= "service-sockets-max-retries" ":" INTEGER
+
+     lease_database ::= "lease-database" ":" "{" database_map_params "}"
+
+     hosts_database ::= "hosts-database" ":" "{" database_map_params "}"
+
+     hosts_databases ::= "hosts-databases" ":" "[" database_list "]"
+
+     database_list ::= 
+                  | not_empty_database_list
+
+     not_empty_database_list ::= database
+                            | not_empty_database_list "," database
+                            | not_empty_database_list ","
+
+     database ::= "{" database_map_params "}"
+
+     database_map_params ::= database_map_param
+                        | database_map_params "," database_map_param
+                        | database_map_params ","
+
+     database_map_param ::= database_type
+                       | user
+                       | password
+                       | host
+                       | port
+                       | name
+                       | persist
+                       | lfc_interval
+                       | readonly
+                       | connect_timeout
+                       | max_reconnect_tries
+                       | reconnect_wait_time
+                       | on_fail
+                       | max_row_errors
+                       | trust_anchor
+                       | cert_file
+                       | key_file
+                       | cipher_list
+                       | unknown_map_entry
+
+     database_type ::= "type" ":" db_type
+
+     db_type ::= "memfile"
+            | "mysql"
+            | "postgresql"
+
+     user ::= "user" ":" STRING
+
+     password ::= "password" ":" STRING
+
+     host ::= "host" ":" STRING
+
+     port ::= "port" ":" INTEGER
+
+     name ::= "name" ":" STRING
+
+     persist ::= "persist" ":" BOOLEAN
+
+     lfc_interval ::= "lfc-interval" ":" INTEGER
+
+     readonly ::= "readonly" ":" BOOLEAN
+
+     connect_timeout ::= "connect-timeout" ":" INTEGER
+
+     reconnect_wait_time ::= "reconnect-wait-time" ":" INTEGER
+
+     on_fail ::= "on-fail" ":" on_fail_mode
+
+     on_fail_mode ::= "stop-retry-exit"
+                 | "serve-retry-exit"
+                 | "serve-retry-continue"
+
+     max_row_errors ::= "max-row-errors" ":" INTEGER
+
+     max_reconnect_tries ::= "max-reconnect-tries" ":" INTEGER
+
+     trust_anchor ::= "trust-anchor" ":" STRING
+
+     cert_file ::= "cert-file" ":" STRING
+
+     key_file ::= "key-file" ":" STRING
+
+     cipher_list ::= "cipher-list" ":" STRING
+
+     sanity_checks ::= "sanity-checks" ":" "{" sanity_checks_params "}"
+
+     sanity_checks_params ::= sanity_checks_param
+                         | sanity_checks_params "," sanity_checks_param
+                         | sanity_checks_params ","
+
+     sanity_checks_param ::= lease_checks
+
+     lease_checks ::= "lease-checks" ":" STRING
+
+     mac_sources ::= "mac-sources" ":" "[" mac_sources_list "]"
+
+     mac_sources_list ::= mac_sources_value
+                     | mac_sources_list "," mac_sources_value
+                     | mac_sources_list ","
+
+     mac_sources_value ::= duid_id
+                      | string_id
+
+     duid_id ::= "duid"
+
+     string_id ::= STRING
+
+     host_reservation_identifiers ::= "host-reservation-identifiers" ":" "[" host_reservation_identifiers_list "]"
+
+     host_reservation_identifiers_list ::= host_reservation_identifier
+                                      | host_reservation_identifiers_list "," host_reservation_identifier
+                                      | host_reservation_identifiers_list ","
+
+     host_reservation_identifier ::= duid_id
+                                | hw_address_id
+                                | flex_id
+
+     hw_address_id ::= "hw-address"
+
+     flex_id ::= "flex-id"
+
+     relay_supplied_options ::= "relay-supplied-options" ":" "[" list_content "]"
+
+     dhcp_multi_threading ::= "multi-threading" ":" "{" multi_threading_params "}"
+
+     multi_threading_params ::= multi_threading_param
+                           | multi_threading_params "," multi_threading_param
+                           | multi_threading_params ","
+
+     multi_threading_param ::= enable_multi_threading
+                          | thread_pool_size
+                          | packet_queue_size
+                          | user_context
+                          | comment
+                          | unknown_map_entry
+
+     enable_multi_threading ::= "enable-multi-threading" ":" BOOLEAN
+
+     thread_pool_size ::= "thread-pool-size" ":" INTEGER
+
+     packet_queue_size ::= "packet-queue-size" ":" INTEGER
+
+     hooks_libraries ::= "hooks-libraries" ":" "[" hooks_libraries_list "]"
+
+     hooks_libraries_list ::= 
+                         | not_empty_hooks_libraries_list
+
+     not_empty_hooks_libraries_list ::= hooks_library
+                                   | not_empty_hooks_libraries_list "," hooks_library
+                                   | not_empty_hooks_libraries_list ","
+
+     hooks_library ::= "{" hooks_params "}"
+
+     sub_hooks_library ::= "{" hooks_params "}"
+
+     hooks_params ::= hooks_param
+                 | hooks_params "," hooks_param
+                 | hooks_params ","
+                 | unknown_map_entry
+
+     hooks_param ::= library
+                | parameters
+
+     library ::= "library" ":" STRING
+
+     parameters ::= "parameters" ":" map_value
+
+     expired_leases_processing ::= "expired-leases-processing" ":" "{" expired_leases_params "}"
+
+     expired_leases_params ::= expired_leases_param
+                          | expired_leases_params "," expired_leases_param
+                          | expired_leases_params ","
+
+     expired_leases_param ::= reclaim_timer_wait_time
+                         | flush_reclaimed_timer_wait_time
+                         | hold_reclaimed_time
+                         | max_reclaim_leases
+                         | max_reclaim_time
+                         | unwarned_reclaim_cycles
+
+     reclaim_timer_wait_time ::= "reclaim-timer-wait-time" ":" INTEGER
+
+     flush_reclaimed_timer_wait_time ::= "flush-reclaimed-timer-wait-time" ":" INTEGER
+
+     hold_reclaimed_time ::= "hold-reclaimed-time" ":" INTEGER
+
+     max_reclaim_leases ::= "max-reclaim-leases" ":" INTEGER
+
+     max_reclaim_time ::= "max-reclaim-time" ":" INTEGER
+
+     unwarned_reclaim_cycles ::= "unwarned-reclaim-cycles" ":" INTEGER
+
+     subnet6_list ::= "subnet6" ":" "[" subnet6_list_content "]"
+
+     subnet6_list_content ::= 
+                         | not_empty_subnet6_list
+
+     not_empty_subnet6_list ::= subnet6
+                           | not_empty_subnet6_list "," subnet6
+                           | not_empty_subnet6_list ","
+
+     subnet6 ::= "{" subnet6_params "}"
+
+     sub_subnet6 ::= "{" subnet6_params "}"
+
+     subnet6_params ::= subnet6_param
+                   | subnet6_params "," subnet6_param
+                   | subnet6_params ","
+
+     subnet6_param ::= preferred_lifetime
+                  | min_preferred_lifetime
+                  | max_preferred_lifetime
+                  | valid_lifetime
+                  | min_valid_lifetime
+                  | max_valid_lifetime
+                  | renew_timer
+                  | rebind_timer
+                  | option_data_list
+                  | pools_list
+                  | pd_pools_list
+                  | subnet
+                  | interface
+                  | interface_id
+                  | id
+                  | rapid_commit
+                  | client_class
+                  | require_client_classes
+                  | reservations
+                  | reservation_mode
+                  | reservations_global
+                  | reservations_in_subnet
+                  | reservations_out_of_pool
+                  | relay
+                  | user_context
+                  | comment
+                  | calculate_tee_times
+                  | t1_percent
+                  | t2_percent
+                  | cache_threshold
+                  | cache_max_age
+                  | hostname_char_set
+                  | hostname_char_replacement
+                  | ddns_send_updates
+                  | ddns_override_no_update
+                  | ddns_override_client_update
+                  | ddns_replace_client_name
+                  | ddns_generated_prefix
+                  | ddns_qualifying_suffix
+                  | ddns_update_on_renew
+                  | ddns_use_conflict_resolution
+                  | store_extended_info
+                  | unknown_map_entry
+
+     subnet ::= "subnet" ":" STRING
+
+     interface ::= "interface" ":" STRING
+
+     interface_id ::= "interface-id" ":" STRING
+
+     client_class ::= "client-class" ":" STRING
+
+     require_client_classes ::= "require-client-classes" ":" list_strings
+
+     reservations_global ::= "reservations-global" ":" BOOLEAN
+
+     reservations_in_subnet ::= "reservations-in-subnet" ":" BOOLEAN
+
+     reservations_out_of_pool ::= "reservations-out-of-pool" ":" BOOLEAN
+
+     reservation_mode ::= "reservation-mode" ":" hr_mode
+
+     hr_mode ::= "disabled"
+            | "out-of-pool"
+            | "global"
+            | "all"
+
+     id ::= "id" ":" INTEGER
+
+     rapid_commit ::= "rapid-commit" ":" BOOLEAN
+
+     shared_networks ::= "shared-networks" ":" "[" shared_networks_content "]"
+
+     shared_networks_content ::= 
+                            | shared_networks_list
+
+     shared_networks_list ::= shared_network
+                         | shared_networks_list "," shared_network
+                         | shared_networks_list ","
+
+     shared_network ::= "{" shared_network_params "}"
+
+     shared_network_params ::= shared_network_param
+                          | shared_network_params "," shared_network_param
+                          | shared_network_params ","
+
+     shared_network_param ::= name
+                         | subnet6_list
+                         | interface
+                         | interface_id
+                         | renew_timer
+                         | rebind_timer
+                         | option_data_list
+                         | relay
+                         | reservation_mode
+                         | reservations_global
+                         | reservations_in_subnet
+                         | reservations_out_of_pool
+                         | client_class
+                         | require_client_classes
+                         | preferred_lifetime
+                         | min_preferred_lifetime
+                         | max_preferred_lifetime
+                         | rapid_commit
+                         | valid_lifetime
+                         | min_valid_lifetime
+                         | max_valid_lifetime
+                         | user_context
+                         | comment
+                         | calculate_tee_times
+                         | t1_percent
+                         | t2_percent
+                         | cache_threshold
+                         | cache_max_age
+                         | hostname_char_set
+                         | hostname_char_replacement
+                         | ddns_send_updates
+                         | ddns_override_no_update
+                         | ddns_override_client_update
+                         | ddns_replace_client_name
+                         | ddns_generated_prefix
+                         | ddns_qualifying_suffix
+                         | ddns_update_on_renew
+                         | ddns_use_conflict_resolution
+                         | store_extended_info
+                         | unknown_map_entry
+
+     option_def_list ::= "option-def" ":" "[" option_def_list_content "]"
+
+     sub_option_def_list ::= "{" option_def_list "}"
+
+     option_def_list_content ::= 
+                            | not_empty_option_def_list
+
+     not_empty_option_def_list ::= option_def_entry
+                              | not_empty_option_def_list "," option_def_entry
+                              | not_empty_option_def_list ","
+
+     option_def_entry ::= "{" option_def_params "}"
+
+     sub_option_def ::= "{" option_def_params "}"
+
+     option_def_params ::= 
+                      | not_empty_option_def_params
+
+     not_empty_option_def_params ::= option_def_param
+                                | not_empty_option_def_params "," option_def_param
+                                | not_empty_option_def_params ","
+
+     option_def_param ::= option_def_name
+                     | option_def_code
+                     | option_def_type
+                     | option_def_record_types
+                     | option_def_space
+                     | option_def_encapsulate
+                     | option_def_array
+                     | user_context
+                     | comment
+                     | unknown_map_entry
+
+     option_def_name ::= name
+
+     code ::= "code" ":" INTEGER
+
+     option_def_code ::= code
+
+     option_def_type ::= "type" ":" STRING
+
+     option_def_record_types ::= "record-types" ":" STRING
+
+     space ::= "space" ":" STRING
+
+     option_def_space ::= space
+
+     option_def_encapsulate ::= "encapsulate" ":" STRING
+
+     option_def_array ::= "array" ":" BOOLEAN
+
+     option_data_list ::= "option-data" ":" "[" option_data_list_content "]"
+
+     option_data_list_content ::= 
+                             | not_empty_option_data_list
+
+     not_empty_option_data_list ::= option_data_entry
+                               | not_empty_option_data_list "," option_data_entry
+                               | not_empty_option_data_list ","
+
+     option_data_entry ::= "{" option_data_params "}"
+
+     sub_option_data ::= "{" option_data_params "}"
+
+     option_data_params ::= 
+                       | not_empty_option_data_params
+
+     not_empty_option_data_params ::= option_data_param
+                                 | not_empty_option_data_params "," option_data_param
+                                 | not_empty_option_data_params ","
+
+     option_data_param ::= option_data_name
+                      | option_data_data
+                      | option_data_code
+                      | option_data_space
+                      | option_data_csv_format
+                      | option_data_always_send
+                      | user_context
+                      | comment
+                      | unknown_map_entry
+
+     option_data_name ::= name
+
+     option_data_data ::= "data" ":" STRING
+
+     option_data_code ::= code
+
+     option_data_space ::= space
+
+     option_data_csv_format ::= "csv-format" ":" BOOLEAN
+
+     option_data_always_send ::= "always-send" ":" BOOLEAN
+
+     pools_list ::= "pools" ":" "[" pools_list_content "]"
+
+     pools_list_content ::= 
+                       | not_empty_pools_list
+
+     not_empty_pools_list ::= pool_list_entry
+                         | not_empty_pools_list "," pool_list_entry
+                         | not_empty_pools_list ","
+
+     pool_list_entry ::= "{" pool_params "}"
+
+     sub_pool6 ::= "{" pool_params "}"
+
+     pool_params ::= pool_param
+                | pool_params "," pool_param
+                | pool_params ","
+
+     pool_param ::= pool_entry
+               | option_data_list
+               | client_class
+               | require_client_classes
+               | user_context
+               | comment
+               | unknown_map_entry
+
+     pool_entry ::= "pool" ":" STRING
+
+     user_context ::= "user-context" ":" map_value
+
+     comment ::= "comment" ":" STRING
+
+     pd_pools_list ::= "pd-pools" ":" "[" pd_pools_list_content "]"
+
+     pd_pools_list_content ::= 
+                          | not_empty_pd_pools_list
+
+     not_empty_pd_pools_list ::= pd_pool_entry
+                            | not_empty_pd_pools_list "," pd_pool_entry
+                            | not_empty_pd_pools_list ","
+
+     pd_pool_entry ::= "{" pd_pool_params "}"
+
+     sub_pd_pool ::= "{" pd_pool_params "}"
+
+     pd_pool_params ::= pd_pool_param
+                   | pd_pool_params "," pd_pool_param
+                   | pd_pool_params ","
+
+     pd_pool_param ::= pd_prefix
+                  | pd_prefix_len
+                  | pd_delegated_len
+                  | option_data_list
+                  | client_class
+                  | require_client_classes
+                  | excluded_prefix
+                  | excluded_prefix_len
+                  | user_context
+                  | comment
+                  | unknown_map_entry
+
+     pd_prefix ::= "prefix" ":" STRING
+
+     pd_prefix_len ::= "prefix-len" ":" INTEGER
+
+     excluded_prefix ::= "excluded-prefix" ":" STRING
+
+     excluded_prefix_len ::= "excluded-prefix-len" ":" INTEGER
+
+     pd_delegated_len ::= "delegated-len" ":" INTEGER
+
+     reservations ::= "reservations" ":" "[" reservations_list "]"
+
+     reservations_list ::= 
+                      | not_empty_reservations_list
+
+     not_empty_reservations_list ::= reservation
+                                | not_empty_reservations_list "," reservation
+                                | not_empty_reservations_list ","
+
+     reservation ::= "{" reservation_params "}"
+
+     sub_reservation ::= "{" reservation_params "}"
+
+     reservation_params ::= 
+                       | not_empty_reservation_params
+
+     not_empty_reservation_params ::= reservation_param
+                                 | not_empty_reservation_params "," reservation_param
+                                 | not_empty_reservation_params ","
+
+     reservation_param ::= duid
+                      | reservation_client_classes
+                      | ip_addresses
+                      | prefixes
+                      | hw_address
+                      | hostname
+                      | flex_id_value
+                      | option_data_list
+                      | user_context
+                      | comment
+                      | unknown_map_entry
+
+     ip_addresses ::= "ip-addresses" ":" list_strings
+
+     prefixes ::= "prefixes" ":" list_strings
+
+     duid ::= "duid" ":" STRING
+
+     hw_address ::= "hw-address" ":" STRING
+
+     hostname ::= "hostname" ":" STRING
+
+     flex_id_value ::= "flex-id" ":" STRING
+
+     reservation_client_classes ::= "client-classes" ":" list_strings
+
+     relay ::= "relay" ":" "{" relay_map "}"
+
+     relay_map ::= ip_address
+              | ip_addresses
+
+     ip_address ::= "ip-address" ":" STRING
+
+     client_classes ::= "client-classes" ":" "[" client_classes_list "]"
+
+     client_classes_list ::= client_class_entry
+                        | client_classes_list "," client_class_entry
+                        | client_classes_list ","
+
+     client_class_entry ::= "{" client_class_params "}"
+
+     client_class_params ::= 
+                        | not_empty_client_class_params
+
+     not_empty_client_class_params ::= client_class_param
+                                  | not_empty_client_class_params "," client_class_param
+                                  | not_empty_client_class_params ","
+
+     client_class_param ::= client_class_name
+                       | client_class_test
+                       | only_if_required
+                       | option_data_list
+                       | user_context
+                       | comment
+                       | preferred_lifetime
+                       | min_preferred_lifetime
+                       | max_preferred_lifetime
+                       | valid_lifetime
+                       | min_valid_lifetime
+                       | max_valid_lifetime
+                       | unknown_map_entry
+
+     client_class_name ::= name
+
+     client_class_test ::= "test" ":" STRING
+
+     only_if_required ::= "only-if-required" ":" BOOLEAN
+
+     server_id ::= "server-id" ":" "{" server_id_params "}"
+
+     server_id_params ::= server_id_param
+                     | server_id_params "," server_id_param
+                     | server_id_params ","
+
+     server_id_param ::= server_id_type
+                    | identifier
+                    | time
+                    | htype
+                    | enterprise_id
+                    | persist
+                    | user_context
+                    | comment
+                    | unknown_map_entry
+
+     server_id_type ::= "type" ":" duid_type
+
+     duid_type ::= "LLT"
+              | "EN"
+              | "LL"
+
+     htype ::= "htype" ":" INTEGER
+
+     identifier ::= "identifier" ":" STRING
+
+     time ::= "time" ":" INTEGER
+
+     enterprise_id ::= "enterprise-id" ":" INTEGER
+
+     dhcp4o6_port ::= "dhcp4o6-port" ":" INTEGER
+
+     control_socket ::= "control-socket" ":" "{" control_socket_params "}"
+
+     control_socket_params ::= control_socket_param
+                          | control_socket_params "," control_socket_param
+                          | control_socket_params ","
+
+     control_socket_param ::= socket_type
+                         | socket_name
+                         | user_context
+                         | comment
+                         | unknown_map_entry
+
+     socket_type ::= "socket-type" ":" STRING
+
+     socket_name ::= "socket-name" ":" STRING
+
+     dhcp_queue_control ::= "dhcp-queue-control" ":" "{" queue_control_params "}"
+
+     queue_control_params ::= queue_control_param
+                         | queue_control_params "," queue_control_param
+                         | queue_control_params ","
+
+     queue_control_param ::= enable_queue
+                        | queue_type
+                        | capacity
+                        | user_context
+                        | comment
+                        | arbitrary_map_entry
+
+     enable_queue ::= "enable-queue" ":" BOOLEAN
+
+     queue_type ::= "queue-type" ":" STRING
+
+     capacity ::= "capacity" ":" INTEGER
+
+     arbitrary_map_entry ::= STRING ":" value
+
+     dhcp_ddns ::= "dhcp-ddns" ":" "{" dhcp_ddns_params "}"
+
+     sub_dhcp_ddns ::= "{" dhcp_ddns_params "}"
+
+     dhcp_ddns_params ::= dhcp_ddns_param
+                     | dhcp_ddns_params "," dhcp_ddns_param
+                     | dhcp_ddns_params ","
+
+     dhcp_ddns_param ::= enable_updates
+                    | server_ip
+                    | server_port
+                    | sender_ip
+                    | sender_port
+                    | max_queue_size
+                    | ncr_protocol
+                    | ncr_format
+                    | dep_override_no_update
+                    | dep_override_client_update
+                    | dep_replace_client_name
+                    | dep_generated_prefix
+                    | dep_qualifying_suffix
+                    | dep_hostname_char_set
+                    | dep_hostname_char_replacement
+                    | user_context
+                    | comment
+                    | unknown_map_entry
+
+     enable_updates ::= "enable-updates" ":" BOOLEAN
+
+     dep_qualifying_suffix ::= "qualifying-suffix" ":" STRING
+
+     server_ip ::= "server-ip" ":" STRING
+
+     server_port ::= "server-port" ":" INTEGER
+
+     sender_ip ::= "sender-ip" ":" STRING
+
+     sender_port ::= "sender-port" ":" INTEGER
+
+     max_queue_size ::= "max-queue-size" ":" INTEGER
+
+     ncr_protocol ::= "ncr-protocol" ":" ncr_protocol_value
+
+     ncr_protocol_value ::= "UDP"
+                       | "TCP"
+
+     ncr_format ::= "ncr-format" ":" "JSON"
+
+     dep_override_no_update ::= "override-no-update" ":" BOOLEAN
+
+     dep_override_client_update ::= "override-client-update" ":" BOOLEAN
+
+     dep_replace_client_name ::= "replace-client-name" ":" ddns_replace_client_name_value
+
+     dep_generated_prefix ::= "generated-prefix" ":" STRING
+
+     dep_hostname_char_set ::= "hostname-char-set" ":" STRING
+
+     dep_hostname_char_replacement ::= "hostname-char-replacement" ":" STRING
+
+     config_control ::= "config-control" ":" "{" config_control_params "}"
+
+     sub_config_control ::= "{" config_control_params "}"
+
+     config_control_params ::= config_control_param
+                          | config_control_params "," config_control_param
+                          | config_control_params ","
+
+     config_control_param ::= config_databases
+                         | config_fetch_wait_time
+
+     config_databases ::= "config-databases" ":" "[" database_list "]"
+
+     config_fetch_wait_time ::= "config-fetch-wait-time" ":" INTEGER
+
+     loggers ::= "loggers" ":" "[" loggers_entries "]"
+
+     loggers_entries ::= logger_entry
+                    | loggers_entries "," logger_entry
+                    | loggers_entries ","
+
+     logger_entry ::= "{" logger_params "}"
+
+     logger_params ::= logger_param
+                  | logger_params "," logger_param
+                  | logger_params ","
+
+     logger_param ::= name
+                 | output_options_list
+                 | debuglevel
+                 | severity
+                 | user_context
+                 | comment
+                 | unknown_map_entry
+
+     debuglevel ::= "debuglevel" ":" INTEGER
+
+     severity ::= "severity" ":" STRING
+
+     output_options_list ::= "output_options" ":" "[" output_options_list_content "]"
+
+     output_options_list_content ::= output_entry
+                                | output_options_list_content "," output_entry
+                                | output_options_list_content ","
+
+     output_entry ::= "{" output_params_list "}"
+
+     output_params_list ::= output_params
+                       | output_params_list "," output_params
+                       | output_params_list ","
+
+     output_params ::= output
+                  | flush
+                  | maxsize
+                  | maxver
+                  | pattern
+
+     output ::= "output" ":" STRING
+
+     flush ::= "flush" ":" BOOLEAN
+
+     maxsize ::= "maxsize" ":" INTEGER
+
+     maxver ::= "maxver" ":" INTEGER
+
+     pattern ::= "pattern" ":" STRING
+
+     compatibility ::= "compatibility" ":" "{" compatibility_params "}"
+
+     compatibility_params ::= compatibility_param
+                         | compatibility_params "," compatibility_param
+                         | compatibility_params ","
+
+     compatibility_param ::= lenient_option_parsing
+                        | unknown_map_entry
+
+     lenient_option_parsing ::= "lenient-option-parsing" ":" BOOLEAN
+
diff --git a/doc/sphinx/grammar/grammar-netconf-parser.rst b/doc/sphinx/grammar/grammar-netconf-parser.rst
new file mode 100644
index 0000000..0594706
--- /dev/null
+++ b/doc/sphinx/grammar/grammar-netconf-parser.rst
@@ -0,0 +1,221 @@
+This grammar is generated from ``netconf_parser.yy``. See :ref:`netconf` for more details.
+
+.. code-block:: BNF
+   :linenos:
+
+     Grammar
+
+     $accept ::= start EOF
+
+     start ::= START_JSON json
+
+     start ::= START_NETCONF netconf_syntax_map
+
+     start ::= START_SUB_NETCONF sub_netconf
+
+     sub_netconf ::= "{" global_params "}"
+
+     json ::= value
+
+     value ::= INTEGER
+          | FLOAT
+          | BOOLEAN
+          | STRING
+          | NULL
+          | map
+          | list_generic
+
+     map ::= "{" map_content "}"
+
+     map_value ::= map
+
+     map_content ::= 
+                | not_empty_map
+
+     not_empty_map ::= STRING ":" value
+                  | not_empty_map "," STRING ":" value
+                  | not_empty_map ","
+
+     list_generic ::= "[" list_content "]"
+
+     list_content ::= 
+                 | not_empty_list
+
+     not_empty_list ::= value
+                   | not_empty_list "," value
+                   | not_empty_list ","
+
+     unknown_map_entry ::= STRING ":"
+
+     netconf_syntax_map ::= "{" global_object "}"
+
+     global_object ::= "Netconf" ":" "{" global_params "}"
+                  | global_object_comma
+
+     global_object_comma ::= global_object ","
+
+     global_params ::= 
+                  | not_empty_global_params
+
+     not_empty_global_params ::= global_param
+                            | not_empty_global_params "," global_param
+                            | not_empty_global_params ","
+
+     global_param ::= boot_update
+                 | subscribe_changes
+                 | validate_changes
+                 | managed_servers
+                 | hooks_libraries
+                 | loggers
+                 | user_context
+                 | comment
+                 | unknown_map_entry
+
+     boot_update ::= "boot-update" ":" BOOLEAN
+
+     subscribe_changes ::= "subscribe-changes" ":" BOOLEAN
+
+     validate_changes ::= "validate-changes" ":" BOOLEAN
+
+     user_context ::= "user-context" ":" map_value
+
+     comment ::= "comment" ":" STRING
+
+     hooks_libraries ::= "hooks-libraries" ":" "[" hooks_libraries_list "]"
+
+     hooks_libraries_list ::= 
+                         | not_empty_hooks_libraries_list
+
+     not_empty_hooks_libraries_list ::= hooks_library
+                                   | not_empty_hooks_libraries_list "," hooks_library
+                                   | not_empty_hooks_libraries_list ","
+
+     hooks_library ::= "{" hooks_params "}"
+
+     hooks_params ::= hooks_param
+                 | hooks_params "," hooks_param
+                 | hooks_params ","
+                 | unknown_map_entry
+
+     hooks_param ::= library
+                | parameters
+
+     library ::= "library" ":" STRING
+
+     parameters ::= "parameters" ":" map_value
+
+     managed_servers ::= "managed-servers" ":" "{" servers_entries "}"
+
+     servers_entries ::= 
+                    | not_empty_servers_entries
+
+     not_empty_servers_entries ::= server_entry
+                              | not_empty_servers_entries "," server_entry
+                              | not_empty_servers_entries ","
+
+     server_entry ::= dhcp4_server
+                 | dhcp6_server
+                 | d2_server
+                 | ca_server
+                 | unknown_map_entry
+
+     dhcp4_server ::= "dhcp4" ":" "{" managed_server_params "}"
+
+     dhcp6_server ::= "dhcp6" ":" "{" managed_server_params "}"
+
+     d2_server ::= "d2" ":" "{" managed_server_params "}"
+
+     ca_server ::= "ca" ":" "{" managed_server_params "}"
+
+     managed_server_params ::= managed_server_param
+                          | managed_server_params "," managed_server_param
+                          | managed_server_params ","
+
+     managed_server_param ::= model
+                         | boot_update
+                         | subscribe_changes
+                         | validate_changes
+                         | control_socket
+                         | user_context
+                         | comment
+                         | unknown_map_entry
+
+     model ::= "model" ":" STRING
+
+     control_socket ::= "control-socket" ":" "{" control_socket_params "}"
+
+     control_socket_params ::= control_socket_param
+                          | control_socket_params "," control_socket_param
+                          | control_socket_params ","
+
+     control_socket_param ::= socket_type
+                         | socket_name
+                         | socket_url
+                         | user_context
+                         | comment
+                         | unknown_map_entry
+
+     socket_type ::= "socket-type" ":" socket_type_value
+
+     socket_type_value ::= "unix"
+                      | "http"
+                      | "stdout"
+
+     socket_name ::= "socket-name" ":" STRING
+
+     socket_url ::= "socket-url" ":" STRING
+
+     loggers ::= "loggers" ":" "[" loggers_entries "]"
+
+     loggers_entries ::= logger_entry
+                    | loggers_entries "," logger_entry
+                    | loggers_entries ","
+
+     logger_entry ::= "{" logger_params "}"
+
+     logger_params ::= logger_param
+                  | logger_params "," logger_param
+                  | logger_params ","
+
+     logger_param ::= name
+                 | output_options_list
+                 | debuglevel
+                 | severity
+                 | user_context
+                 | comment
+                 | unknown_map_entry
+
+     name ::= "name" ":" STRING
+
+     debuglevel ::= "debuglevel" ":" INTEGER
+
+     severity ::= "severity" ":" STRING
+
+     output_options_list ::= "output_options" ":" "[" output_options_list_content "]"
+
+     output_options_list_content ::= output_entry
+                                | output_options_list_content "," output_entry
+                                | output_options_list_content ","
+
+     output_entry ::= "{" output_params_list "}"
+
+     output_params_list ::= output_params
+                       | output_params_list "," output_params
+                       | output_params_list ","
+
+     output_params ::= output
+                  | flush
+                  | maxsize
+                  | maxver
+                  | pattern
+
+     output ::= "output" ":" STRING
+
+     flush ::= "flush" ":" BOOLEAN
+
+     maxsize ::= "maxsize" ":" INTEGER
+
+     maxver ::= "maxver" ":" INTEGER
+
+     pattern ::= "pattern" ":" STRING
+
diff --git a/doc/sphinx/grammar/grammar.rst b/doc/sphinx/grammar/grammar.rst
new file mode 100644
index 0000000..d8f77b0
--- /dev/null
+++ b/doc/sphinx/grammar/grammar.rst
@@ -0,0 +1,44 @@
+..
+   Copyright (C) 2021-2022 Internet Systems Consortium, Inc. ("ISC")
+
+   This Source Code Form is subject to the terms of the Mozilla Public
+   License, v. 2.0. If a copy of the MPL was not distributed with this
+   file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+   See the COPYRIGHT file distributed with this work for additional
+   information regarding copyright ownership.
+
+.. _bnf-grammar:
+
+Kea Configuration File Syntax (BNF)
+===================================
+
+Kea consists of several daemons, each with its own configuration syntax. The following sections
+provide a complete syntax of all possible parameters, written in Backus-Naur Form (BNF).
+See this `Wikipedia article on BNF <https://en.wikipedia.org/wiki/Backus%E2%80%93Naur_form>`_ for
+more information.
+
+BNF Grammar for DHCPv4
+----------------------
+
+.. include:: grammar-dhcp4-parser.rst
+
+BNF Grammar for DHCPv6
+----------------------
+
+.. include:: grammar-dhcp6-parser.rst
+
+BNF Grammar for Control Agent
+-----------------------------
+
+.. include:: grammar-ca-parser.rst
+
+BNF Grammar for DHCP-DDNS
+-------------------------
+
+.. include:: grammar-d2-parser.rst
+
+BNF Grammar for the Kea NETCONF Agent
+-------------------------------------
+
+.. include:: grammar-netconf-parser.rst