acl string { address_match_element; ... };

key domain_name {
 algorithm string;
 secret string;
};

masters string [ port integer ] {
 ( masters | ipv4_address [port integer] |
 ipv6_address [port integer] ) [ key string ]; ...
};

server ( ipv4_address[/prefixlen] | ipv6_address[/prefixlen] ) {
 bogus boolean;
 edns boolean;
 edns-udp-size integer;
 max-udp-size integer;
 provide-ixfr boolean;
 request-ixfr boolean;
 keys server_key;
 transfers integer;
 transfer-format ( many-answers | one-answer );
 transfer-source ( ipv4_address | * )
 [ port ( integer | * ) ];
 transfer-source-v6 ( ipv6_address | * )
 [ port ( integer | * ) ];
 support-ixfr boolean; // obsolete
};

trusted-keys {
 domain_name flags protocol algorithm key; ... 
};

managed-keys {
 domain_name initial-key flags protocol algorithm key; ... 
};

controls {
 inet ( ipv4_address | ipv6_address | * )
 [ port ( integer | * ) ]
 allow { address_match_element; ... }
 [ keys { string; ... } ];
 unix unsupported; // not implemented
};

logging {
 channel string {
 file log_file;
 syslog optional_facility;
 null;
 stderr;
 severity log_severity;
 print-time boolean;
 print-severity boolean;
 print-category boolean;
 };
 category string { string; ... };
};

lwres {
 listen-on [ port integer ] {
 ( ipv4_address | ipv6_address ) [ port integer ]; ...
 };
 view string optional_class;
 search { string; ... };
 ndots integer;
};

options {
 avoid-v4-udp-ports { port; ... };
 avoid-v6-udp-ports { port; ... };
 blackhole { address_match_element; ... };
 coresize size;
 datasize size;
 directory quoted_string;
 dump-file quoted_string;
 files size;
 heartbeat-interval integer;
 host-statistics boolean; // not implemented
 host-statistics-max number; // not implemented
 hostname ( quoted_string | none );
 interface-interval integer;
 listen-on [ port integer ] { address_match_element; ... };
 listen-on-v6 [ port integer ] { address_match_element; ... };
 match-mapped-addresses boolean;
 memstatistics-file quoted_string;
 pid-file ( quoted_string | none );
 port integer;
 querylog boolean;
 recursing-file quoted_string;
 reserved-sockets integer;
 random-device quoted_string;
 recursive-clients integer;
 serial-query-rate integer;
 server-id ( quoted_string | hostname | none );
 stacksize size;
 statistics-file quoted_string;
 statistics-interval integer; // not yet implemented
 tcp-clients integer;
 tcp-listen-queue integer;
 tkey-dhkey quoted_string integer;
 tkey-gssapi-credential quoted_string;
 tkey-gssapi-keytab quoted_string;
 tkey-domain quoted_string;
 transfers-per-ns integer;
 transfers-in integer;
 transfers-out integer;
 use-ixfr boolean;
 version ( quoted_string | none );
 allow-recursion { address_match_element; ... };
 allow-recursion-on { address_match_element; ... };
 sortlist { address_match_element; ... };
 topology { address_match_element; ... }; // not implemented
 auth-nxdomain boolean; // default changed
 minimal-responses boolean;
 recursion boolean;
 rrset-order {
 [ class string ] [ type string ]
 [ name quoted_string ] string string; ...
 };
 provide-ixfr boolean;
 request-ixfr boolean;
 rfc2308-type1 boolean; // not yet implemented
 additional-from-auth boolean;
 additional-from-cache boolean;
 query-source ( ( ipv4_address | * ) | [ address ( ipv4_address | * ) ] ) [ port ( integer | * ) ];
 query-source-v6 ( ( ipv6_address | * ) | [ address ( ipv6_address | * ) ] ) [ port ( integer | * ) ];
 use-queryport-pool boolean;
 queryport-pool-ports integer;
 queryport-pool-updateinterval integer;
 cleaning-interval integer;
 resolver-query-timeout integer;
 min-roots integer; // not implemented
 lame-ttl integer;
 max-ncache-ttl integer;
 max-cache-ttl integer;
 transfer-format ( many-answers | one-answer );
 max-cache-size size;
 max-acache-size size;
 clients-per-query number;
 max-clients-per-query number;
 check-names ( master | slave | response )
 ( fail | warn | ignore );
 check-mx ( fail | warn | ignore );
 check-integrity boolean;
 check-mx-cname ( fail | warn | ignore );
 check-srv-cname ( fail | warn | ignore );
 cache-file quoted_string; // test option
 suppress-initial-notify boolean; // not yet implemented
 preferred-glue string;
 dual-stack-servers [ port integer ] {
 ( quoted_string [port integer] |
 ipv4_address [port integer] |
 ipv6_address [port integer] ); ...
 };
 edns-udp-size integer;
 max-udp-size integer;
 root-delegation-only [ exclude { quoted_string; ... } ];
 disable-algorithms string { string; ... };
 dnssec-enable boolean;
 dnssec-validation boolean;
 dnssec-lookaside ( auto | no | domain trust-anchor domain );
 dnssec-must-be-secure string boolean;
 dnssec-accept-expired boolean;
 dns64-server string;
 dns64-contact string;
 dns64 prefix {
 clients { <replacable>acl</replacable>; };
 exclude { <replacable>acl</replacable>; };
 mapped { <replacable>acl</replacable>; };
 break-dnssec boolean;
 recursive-only boolean;
 suffix ipv6_address;
 };
 empty-server string;
 empty-contact string;
 empty-zones-enable boolean;
 disable-empty-zone string;
 dialup dialuptype;
 ixfr-from-differences ixfrdiff;
 allow-query { address_match_element; ... };
 allow-query-on { address_match_element; ... };
 allow-query-cache { address_match_element; ... };
 allow-query-cache-on { address_match_element; ... };
 allow-transfer { address_match_element; ... };
 allow-update { address_match_element; ... };
 allow-update-forwarding { address_match_element; ... };
 update-check-ksk boolean;
 dnssec-dnskey-kskonly boolean;
 masterfile-format ( text | raw );
 notify notifytype;
 notify-source ( ipv4_address | * ) [ port ( integer | * ) ];
 notify-source-v6 ( ipv6_address | * ) [ port ( integer | * ) ];
 notify-delay seconds;
 notify-to-soa boolean;
 also-notify [ port integer ] { ( ipv4_address | ipv6_address )
 [ port integer ]; ...
 [ key keyname ] ... };
 allow-notify { address_match_element; ... };
 forward ( first | only );
 forwarders [ port integer ] {
 ( ipv4_address | ipv6_address ) [ port integer ]; ...
 };
 max-journal-size size_no_default;
 max-transfer-time-in integer;
 max-transfer-time-out integer;
 max-transfer-idle-in integer;
 max-transfer-idle-out integer;
 max-retry-time integer;
 min-retry-time integer;
 max-refresh-time integer;
 min-refresh-time integer;
 multi-master boolean;
 sig-validity-interval integer;
 sig-re-signing-interval integer;
 sig-signing-nodes integer;
 sig-signing-signatures integer;
 sig-signing-type integer;
 transfer-source ( ipv4_address | * )
 [ port ( integer | * ) ];
 transfer-source-v6 ( ipv6_address | * )
 [ port ( integer | * ) ];
 alt-transfer-source ( ipv4_address | * )
 [ port ( integer | * ) ];
 alt-transfer-source-v6 ( ipv6_address | * )
 [ port ( integer | * ) ];
 use-alt-transfer-source boolean;
 zone-statistics boolean;
 key-directory quoted_string;
 managed-keys-directory quoted_string;
 auto-dnssec allow|maintain|off;
 try-tcp-refresh boolean;
 zero-no-soa-ttl boolean;
 zero-no-soa-ttl-cache boolean;
 dnssec-secure-to-insecure boolean;
 deny-answer-addresses {
 address_match_list
 } [ except-from { namelist } ];
 deny-answer-aliases {
 namelist
 } [ except-from { namelist } ];
 nsec3-test-zone boolean; // testing only
 allow-v6-synthesis { address_match_element; ... }; // obsolete
 deallocate-on-exit boolean; // obsolete
 fake-iquery boolean; // obsolete
 fetch-glue boolean; // obsolete
 has-old-clients boolean; // obsolete
 maintain-ixfr-base boolean; // obsolete
 max-ixfr-log-size size; // obsolete
 multiple-cnames boolean; // obsolete
 named-xfer quoted_string; // obsolete
 serial-queries integer; // obsolete
 treat-cr-as-space boolean; // obsolete
 use-id-pool boolean; // obsolete
};

view string optional_class {
 match-clients { address_match_element; ... };
 match-destinations { address_match_element; ... };
 match-recursive-only boolean;
 key string {
 algorithm string;
 secret string;
 };
 zone string optional_class {
 ...
 };
 server ( ipv4_address[/prefixlen] | ipv6_address[/prefixlen] ) {
 ...
 };
 trusted-keys {
 string integer integer integer quoted_string;
 [...]
 };
 allow-recursion { address_match_element; ... };
 allow-recursion-on { address_match_element; ... };
 sortlist { address_match_element; ... };
 topology { address_match_element; ... }; // not implemented
 auth-nxdomain boolean; // default changed
 minimal-responses boolean;
 recursion boolean;
 rrset-order {
 [ class string ] [ type string ]
 [ name quoted_string ] string string; ...
 };
 provide-ixfr boolean;
 request-ixfr boolean;
 rfc2308-type1 boolean; // not yet implemented
 additional-from-auth boolean;
 additional-from-cache boolean;
 query-source ( ( ipv4_address | * ) | [ address ( ipv4_address | * ) ] ) [ port ( integer | * ) ];
 query-source-v6 ( ( ipv6_address | * ) | [ address ( ipv6_address | * ) ] ) [ port ( integer | * ) ];
 use-queryport-pool boolean;
 queryport-pool-ports integer;
 queryport-pool-updateinterval integer;
 cleaning-interval integer;
 resolver-query-timeout integer;
 min-roots integer; // not implemented
 lame-ttl integer;
 max-ncache-ttl integer;
 max-cache-ttl integer;
 transfer-format ( many-answers | one-answer );
 max-cache-size size;
 max-acache-size size;
 clients-per-query number;
 max-clients-per-query number;
 check-names ( master | slave | response )
 ( fail | warn | ignore );
 check-mx ( fail | warn | ignore );
 check-integrity boolean;
 check-mx-cname ( fail | warn | ignore );
 check-srv-cname ( fail | warn | ignore );
 cache-file quoted_string; // test option
 suppress-initial-notify boolean; // not yet implemented
 preferred-glue string;
 dual-stack-servers [ port integer ] {
 ( quoted_string [port integer] |
 ipv4_address [port integer] |
 ipv6_address [port integer] ); ...
 };
 edns-udp-size integer;
 max-udp-size integer;
 root-delegation-only [ exclude { quoted_string; ... } ];
 disable-algorithms string { string; ... };
 dnssec-enable boolean;
 dnssec-validation boolean;
 dnssec-lookaside ( auto | no | domain trust-anchor domain );
 dnssec-must-be-secure string boolean;
 dnssec-accept-expired boolean;
 dns64-server string;
 dns64-contact string;
 dns64 prefix {
 clients { <replacable>acl</replacable>; };
 exclude { <replacable>acl</replacable>; };
 mapped { <replacable>acl</replacable>; };
 break-dnssec boolean;
 recursive-only boolean;
 suffix ipv6_address;
 };
 empty-server string;
 empty-contact string;
 empty-zones-enable boolean;
 disable-empty-zone string;
 dialup dialuptype;
 ixfr-from-differences ixfrdiff;
 allow-query { address_match_element; ... };
 allow-query-on { address_match_element; ... };
 allow-query-cache { address_match_element; ... };
 allow-query-cache-on { address_match_element; ... };
 allow-transfer { address_match_element; ... };
 allow-update { address_match_element; ... };
 allow-update-forwarding { address_match_element; ... };
 update-check-ksk boolean;
 dnssec-dnskey-kskonly boolean;
 masterfile-format ( text | raw );
 notify notifytype;
 notify-source ( ipv4_address | * ) [ port ( integer | * ) ];
 notify-source-v6 ( ipv6_address | * ) [ port ( integer | * ) ];
 notify-delay seconds;
 notify-to-soa boolean;
 also-notify [ port integer ] { ( ipv4_address | ipv6_address )
 [ port integer ]; ...
 [ key keyname ] ... };
 allow-notify { address_match_element; ... };
 forward ( first | only );
 forwarders [ port integer ] {
 ( ipv4_address | ipv6_address ) [ port integer ]; ...
 };
 max-journal-size size_no_default;
 max-transfer-time-in integer;
 max-transfer-time-out integer;
 max-transfer-idle-in integer;
 max-transfer-idle-out integer;
 max-retry-time integer;
 min-retry-time integer;
 max-refresh-time integer;
 min-refresh-time integer;
 multi-master boolean;
 sig-validity-interval integer;
 transfer-source ( ipv4_address | * )
 [ port ( integer | * ) ];
 transfer-source-v6 ( ipv6_address | * )
 [ port ( integer | * ) ];
 alt-transfer-source ( ipv4_address | * )
 [ port ( integer | * ) ];
 alt-transfer-source-v6 ( ipv6_address | * )
 [ port ( integer | * ) ];
 use-alt-transfer-source boolean;
 zone-statistics boolean;
 try-tcp-refresh boolean;
 key-directory quoted_string;
 zero-no-soa-ttl boolean;
 zero-no-soa-ttl-cache boolean;
 dnssec-secure-to-insecure boolean;
 allow-v6-synthesis { address_match_element; ... }; // obsolete
 fetch-glue boolean; // obsolete
 maintain-ixfr-base boolean; // obsolete
 max-ixfr-log-size size; // obsolete
};

zone string optional_class {
 type ( master | slave | stub | hint | redirect |
 forward | delegation-only );
 file quoted_string;
 masters [ port integer ] {
 ( masters |
 ipv4_address [port integer] |
 ipv6_address [ port integer ] ) [ key string ]; ...
 };
 database string;
 delegation-only boolean;
 check-names ( fail | warn | ignore );
 check-mx ( fail | warn | ignore );
 check-integrity boolean;
 check-mx-cname ( fail | warn | ignore );
 check-srv-cname ( fail | warn | ignore );
 dialup dialuptype;
 ixfr-from-differences boolean;
 journal quoted_string;
 zero-no-soa-ttl boolean;
 dnssec-secure-to-insecure boolean;
 allow-query { address_match_element; ... };
 allow-query-on { address_match_element; ... };
 allow-transfer { address_match_element; ... };
 allow-update { address_match_element; ... };
 allow-update-forwarding { address_match_element; ... };
 update-policy local |  {
 ( grant | deny ) string
 ( name | subdomain | wildcard | self | selfsub | selfwild |
 krb5-self | ms-self | krb5-subdomain | ms-subdomain |
 tcp-self | zonesub | 6to4-self ) string
 rrtypelist;
 [...]
 };
 update-check-ksk boolean;
 dnssec-dnskey-kskonly boolean;
 masterfile-format ( text | raw );
 notify notifytype;
 notify-source ( ipv4_address | * ) [ port ( integer | * ) ];
 notify-source-v6 ( ipv6_address | * ) [ port ( integer | * ) ];
 notify-delay seconds;
 notify-to-soa boolean;
 also-notify [ port integer ] { ( ipv4_address | ipv6_address )
 [ port integer ]; ...
 [ key keyname ] ... };
 allow-notify { address_match_element; ... };
 forward ( first | only );
 forwarders [ port integer ] {
 ( ipv4_address | ipv6_address ) [ port integer ]; ...
 };
 max-journal-size size_no_default;
 max-transfer-time-in integer;
 max-transfer-time-out integer;
 max-transfer-idle-in integer;
 max-transfer-idle-out integer;
 max-retry-time integer;
 min-retry-time integer;
 max-refresh-time integer;
 min-refresh-time integer;
 multi-master boolean;
 request-ixfr boolean;
 sig-validity-interval integer;
 transfer-source ( ipv4_address | * )
 [ port ( integer | * ) ];
 transfer-source-v6 ( ipv6_address | * )
 [ port ( integer | * ) ];
 alt-transfer-source ( ipv4_address | * )
 [ port ( integer | * ) ];
 alt-transfer-source-v6 ( ipv6_address | * )
 [ port ( integer | * ) ];
 use-alt-transfer-source boolean;
 zone-statistics boolean;
 try-tcp-refresh boolean;
 key-directory quoted_string;
 nsec3-test-zone boolean; // testing only
 ixfr-base quoted_string; // obsolete
 ixfr-tmp-file quoted_string; // obsolete
 maintain-ixfr-base boolean; // obsolete
 max-ixfr-log-size size; // obsolete
 pubkey integer integer integer quoted_string; // obsolete
};