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+
+This is a summary of the named.conf options supported by
+this version of BIND 9.
+
+acl <string> { <address_match_element>; ... }; // may occur multiple times
+
+controls {
+ inet ( <ipv4_address> | <ipv6_address> |
+ * ) [ port ( <integer> | * ) ] allow
+ { <address_match_element>; ... } [
+ keys { <string>; ... } ] [ read-only
+ <boolean> ]; // may occur multiple times
+ unix <quoted_string> perm <integer>
+ owner <integer> group <integer> [
+ keys { <string>; ... } ] [ read-only
+ <boolean> ]; // may occur multiple times
+}; // may occur multiple times
+
+dlz <string> {
+ database <string>;
+ search <boolean>;
+}; // may occur multiple times
+
+dnssec-policy <string> {
+ dnskey-ttl <duration>;
+ keys { ( csk | ksk | zsk ) [ ( key-directory ) ] lifetime
+ <duration_or_unlimited> algorithm <string> [ <integer> ]; ... };
+ max-zone-ttl <duration>;
+ nsec3param [ iterations <integer> ] [ optout <boolean> ] [
+ salt-length <integer> ];
+ parent-ds-ttl <duration>;
+ parent-propagation-delay <duration>;
+ parent-registration-delay <duration>; // obsolete
+ publish-safety <duration>;
+ purge-keys <duration>;
+ retire-safety <duration>;
+ signatures-refresh <duration>;
+ signatures-validity <duration>;
+ signatures-validity-dnskey <duration>;
+ zone-propagation-delay <duration>;
+}; // may occur multiple times
+
+dyndb <string> <quoted_string> {
+ <unspecified-text> }; // may occur multiple times
+
+key <string> {
+ algorithm <string>;
+ secret <string>;
+}; // may occur multiple times
+
+logging {
+ category <string> { <string>; ... }; // may occur multiple times
+ channel <string> {
+ buffered <boolean>;
+ file <quoted_string> [ versions ( unlimited | <integer> ) ]
+ [ size <size> ] [ suffix ( increment | timestamp ) ];
+ null;
+ print-category <boolean>;
+ print-severity <boolean>;
+ print-time ( iso8601 | iso8601-utc | local | <boolean> );
+ severity <log_severity>;
+ stderr;
+ syslog [ <syslog_facility> ];
+ }; // may occur multiple times
+};
+
+lwres { <unspecified-text> }; // obsolete, may occur multiple times
+
+managed-keys { <string> ( static-key
+ | initial-key | static-ds |
+ initial-ds ) <integer> <integer>
+ <integer> <quoted_string>; ... }; // may occur multiple times, deprecated
+
+masters <string> [ port <integer> ] [ dscp
+ <integer> ] { ( <remote-servers> |
+ <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key
+ <string> ]; ... }; // may occur multiple times
+
+options {
+ acache-cleaning-interval <integer>; // obsolete
+ acache-enable <boolean>; // obsolete
+ additional-from-auth <boolean>; // obsolete
+ additional-from-cache <boolean>; // obsolete
+ allow-new-zones <boolean>;
+ allow-notify { <address_match_element>; ... };
+ allow-query { <address_match_element>; ... };
+ allow-query-cache { <address_match_element>; ... };
+ allow-query-cache-on { <address_match_element>; ... };
+ allow-query-on { <address_match_element>; ... };
+ allow-recursion { <address_match_element>; ... };
+ allow-recursion-on { <address_match_element>; ... };
+ allow-transfer { <address_match_element>; ... };
+ allow-update { <address_match_element>; ... };
+ allow-update-forwarding { <address_match_element>; ... };
+ allow-v6-synthesis { <address_match_element>; ... }; // obsolete
+ also-notify [ port <integer> ] [ dscp <integer> ] { (
+ <remote-servers> | <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key <string> ]; ... };
+ alt-transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * )
+ ] [ dscp <integer> ];
+ alt-transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> |
+ * ) ] [ dscp <integer> ];
+ answer-cookie <boolean>;
+ attach-cache <string>;
+ auth-nxdomain <boolean>; // default changed
+ auto-dnssec ( allow | maintain | off ); // deprecated
+ automatic-interface-scan <boolean>;
+ avoid-v4-udp-ports { <portrange>; ... };
+ avoid-v6-udp-ports { <portrange>; ... };
+ bindkeys-file <quoted_string>;
+ blackhole { <address_match_element>; ... };
+ cache-file <quoted_string>; // deprecated
+ catalog-zones { zone <string> [ default-masters [ port <integer> ]
+ [ dscp <integer> ] { ( <remote-servers> | <ipv4_address> [ port
+ <integer> ] | <ipv6_address> [ port <integer> ] ) [ key
+ <string> ]; ... } ] [ zone-directory <quoted_string> ] [
+ in-memory <boolean> ] [ min-update-interval <duration> ]; ... };
+ check-dup-records ( fail | warn | ignore );
+ check-integrity <boolean>;
+ check-mx ( fail | warn | ignore );
+ check-mx-cname ( fail | warn | ignore );
+ check-names ( primary | master |
+ secondary | slave | response ) (
+ fail | warn | ignore ); // may occur multiple times
+ check-sibling <boolean>;
+ check-spf ( warn | ignore );
+ check-srv-cname ( fail | warn | ignore );
+ check-wildcard <boolean>;
+ cleaning-interval <integer>; // obsolete
+ clients-per-query <integer>;
+ cookie-algorithm ( aes | siphash24 );
+ cookie-secret <string>; // may occur multiple times
+ coresize ( default | unlimited | <sizeval> );
+ datasize ( default | unlimited | <sizeval> );
+ deallocate-on-exit <boolean>; // ancient
+ deny-answer-addresses { <address_match_element>; ... } [
+ except-from { <string>; ... } ];
+ deny-answer-aliases { <string>; ... } [ except-from { <string>; ...
+ } ];
+ dialup ( notify | notify-passive | passive | refresh | <boolean> );
+ directory <quoted_string>;
+ disable-algorithms <string> { <string>;
+ ... }; // may occur multiple times
+ disable-ds-digests <string> { <string>;
+ ... }; // may occur multiple times
+ disable-empty-zone <string>; // may occur multiple times
+ dns64 <netprefix> {
+ break-dnssec <boolean>;
+ clients { <address_match_element>; ... };
+ exclude { <address_match_element>; ... };
+ mapped { <address_match_element>; ... };
+ recursive-only <boolean>;
+ suffix <ipv6_address>;
+ }; // may occur multiple times
+ dns64-contact <string>;
+ dns64-server <string>;
+ dnskey-sig-validity <integer>;
+ dnsrps-enable <boolean>; // not configured
+ dnsrps-options { <unspecified-text> }; // not configured
+ dnssec-accept-expired <boolean>;
+ dnssec-dnskey-kskonly <boolean>;
+ dnssec-enable <boolean>; // obsolete
+ dnssec-loadkeys-interval <integer>;
+ dnssec-lookaside ( <string>
+ trust-anchor <string> |
+ auto | no ); // obsolete, may occur multiple times
+ dnssec-must-be-secure <string> <boolean>; // may occur multiple times
+ dnssec-policy <string>;
+ dnssec-secure-to-insecure <boolean>;
+ dnssec-update-mode ( maintain | no-resign );
+ dnssec-validation ( yes | no | auto );
+ dnstap { ( all | auth | client | forwarder | resolver | update ) [
+ ( query | response ) ]; ... };
+ dnstap-identity ( <quoted_string> | none | hostname );
+ dnstap-output ( file | unix ) <quoted_string> [ size ( unlimited |
+ <size> ) ] [ versions ( unlimited | <integer> ) ] [ suffix (
+ increment | timestamp ) ];
+ dnstap-version ( <quoted_string> | none );
+ dscp <integer>; // deprecated
+ dual-stack-servers [ port <integer> ] { ( <quoted_string> [ port
+ <integer> ] [ dscp <integer> ] | <ipv4_address> [ port
+ <integer> ] [ dscp <integer> ] | <ipv6_address> [ port
+ <integer> ] [ dscp <integer> ] ); ... };
+ dump-file <quoted_string>;
+ edns-udp-size <integer>;
+ empty-contact <string>;
+ empty-server <string>;
+ empty-zones-enable <boolean>;
+ fake-iquery <boolean>; // ancient
+ fetch-glue <boolean>; // ancient
+ fetch-quota-params <integer> <fixedpoint> <fixedpoint> <fixedpoint>;
+ fetches-per-server <integer> [ ( drop | fail ) ];
+ fetches-per-zone <integer> [ ( drop | fail ) ];
+ files ( default | unlimited | <sizeval> );
+ filter-aaaa { <address_match_element>; ... }; // obsolete
+ filter-aaaa-on-v4 <boolean>; // obsolete
+ filter-aaaa-on-v6 <boolean>; // obsolete
+ flush-zones-on-shutdown <boolean>;
+ forward ( first | only );
+ forwarders [ port <integer> ] [ dscp <integer> ] { ( <ipv4_address>
+ | <ipv6_address> ) [ port <integer> ] [ dscp <integer> ]; ... };
+ fstrm-set-buffer-hint <integer>;
+ fstrm-set-flush-timeout <integer>;
+ fstrm-set-input-queue-size <integer>;
+ fstrm-set-output-notify-threshold <integer>;
+ fstrm-set-output-queue-model ( mpsc | spsc );
+ fstrm-set-output-queue-size <integer>;
+ fstrm-set-reopen-interval <duration>;
+ geoip-directory ( <quoted_string> | none );
+ geoip-use-ecs <boolean>; // obsolete
+ glue-cache <boolean>;
+ has-old-clients <boolean>; // ancient
+ heartbeat-interval <integer>;
+ host-statistics <boolean>; // ancient
+ host-statistics-max <integer>; // ancient
+ hostname ( <quoted_string> | none );
+ interface-interval <duration>;
+ ixfr-from-differences ( primary | master | secondary | slave |
+ <boolean> );
+ keep-response-order { <address_match_element>; ... };
+ key-directory <quoted_string>;
+ lame-ttl <duration>;
+ listen-on [ port <integer> ] [ dscp
+ <integer> ] {
+ <address_match_element>; ... }; // may occur multiple times
+ listen-on-v6 [ port <integer> ] [ dscp
+ <integer> ] {
+ <address_match_element>; ... }; // may occur multiple times
+ lmdb-mapsize <sizeval>;
+ lock-file ( <quoted_string> | none );
+ maintain-ixfr-base <boolean>; // ancient
+ managed-keys-directory <quoted_string>;
+ masterfile-format ( map | raw | text );
+ masterfile-style ( full | relative );
+ match-mapped-addresses <boolean>;
+ max-acache-size ( unlimited | <sizeval> ); // obsolete
+ max-cache-size ( default | unlimited | <sizeval> | <percentage> );
+ max-cache-ttl <duration>;
+ max-clients-per-query <integer>;
+ max-ixfr-log-size ( default | unlimited | <sizeval> ); // ancient
+ max-ixfr-ratio ( unlimited | <percentage> );
+ max-journal-size ( default | unlimited | <sizeval> );
+ max-ncache-ttl <duration>;
+ max-records <integer>;
+ max-recursion-depth <integer>;
+ max-recursion-queries <integer>;
+ max-refresh-time <integer>;
+ max-retry-time <integer>;
+ max-rsa-exponent-size <integer>;
+ max-stale-ttl <duration>;
+ max-transfer-idle-in <integer>;
+ max-transfer-idle-out <integer>;
+ max-transfer-time-in <integer>;
+ max-transfer-time-out <integer>;
+ max-udp-size <integer>;
+ max-zone-ttl ( unlimited | <duration> );
+ memstatistics <boolean>;
+ memstatistics-file <quoted_string>;
+ message-compression <boolean>;
+ min-cache-ttl <duration>;
+ min-ncache-ttl <duration>;
+ min-refresh-time <integer>;
+ min-retry-time <integer>;
+ min-roots <integer>; // ancient
+ minimal-any <boolean>;
+ minimal-responses ( no-auth | no-auth-recursive | <boolean> );
+ multi-master <boolean>;
+ multiple-cnames <boolean>; // ancient
+ named-xfer <quoted_string>; // ancient
+ new-zones-directory <quoted_string>;
+ no-case-compress { <address_match_element>; ... };
+ nocookie-udp-size <integer>;
+ nosit-udp-size <integer>; // obsolete
+ notify ( explicit | master-only | primary-only | <boolean> );
+ notify-delay <integer>;
+ notify-rate <integer>;
+ notify-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ]
+ [ dscp <integer> ];
+ notify-to-soa <boolean>;
+ nsec3-test-zone <boolean>; // test only
+ nta-lifetime <duration>;
+ nta-recheck <duration>;
+ nxdomain-redirect <string>;
+ parental-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ parental-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * )
+ ] [ dscp <integer> ];
+ pid-file ( <quoted_string> | none );
+ port <integer>;
+ preferred-glue <string>;
+ prefetch <integer> [ <integer> ];
+ provide-ixfr <boolean>;
+ qname-minimization ( strict | relaxed | disabled | off );
+ query-source ( ( [ address ] ( <ipv4_address> | * ) [ port (
+ <integer> | * ) ] ) | ( [ [ address ] ( <ipv4_address> | * ) ]
+ port ( <integer> | * ) ) ) [ dscp <integer> ];
+ query-source-v6 ( ( [ address ] ( <ipv6_address> | * ) [ port (
+ <integer> | * ) ] ) | ( [ [ address ] ( <ipv6_address> | * ) ]
+ port ( <integer> | * ) ) ) [ dscp <integer> ];
+ querylog <boolean>;
+ queryport-pool-ports <integer>; // obsolete
+ queryport-pool-updateinterval <integer>; // obsolete
+ random-device ( <quoted_string> | none );
+ rate-limit {
+ all-per-second <integer>;
+ errors-per-second <integer>;
+ exempt-clients { <address_match_element>; ... };
+ ipv4-prefix-length <integer>;
+ ipv6-prefix-length <integer>;
+ log-only <boolean>;
+ max-table-size <integer>;
+ min-table-size <integer>;
+ nodata-per-second <integer>;
+ nxdomains-per-second <integer>;
+ qps-scale <integer>;
+ referrals-per-second <integer>;
+ responses-per-second <integer>;
+ slip <integer>;
+ window <integer>;
+ };
+ recursing-file <quoted_string>;
+ recursion <boolean>;
+ recursive-clients <integer>;
+ request-expire <boolean>;
+ request-ixfr <boolean>;
+ request-nsid <boolean>;
+ request-sit <boolean>; // obsolete
+ require-server-cookie <boolean>;
+ reserved-sockets <integer>;
+ resolver-nonbackoff-tries <integer>;
+ resolver-query-timeout <integer>;
+ resolver-retry-interval <integer>;
+ response-padding { <address_match_element>; ... } block-size
+ <integer>;
+ response-policy { zone <string> [ add-soa <boolean> ] [ log
+ <boolean> ] [ max-policy-ttl <duration> ] [ min-update-interval
+ <duration> ] [ policy ( cname | disabled | drop | given | no-op
+ | nodata | nxdomain | passthru | tcp-only <quoted_string> ) ] [
+ recursive-only <boolean> ] [ nsip-enable <boolean> ] [
+ nsdname-enable <boolean> ]; ... } [ add-soa <boolean> ] [
+ break-dnssec <boolean> ] [ max-policy-ttl <duration> ] [
+ min-update-interval <duration> ] [ min-ns-dots <integer> ] [
+ nsip-wait-recurse <boolean> ] [ qname-wait-recurse <boolean> ]
+ [ recursive-only <boolean> ] [ nsip-enable <boolean> ] [
+ nsdname-enable <boolean> ] [ dnsrps-enable <boolean> ] [
+ dnsrps-options { <unspecified-text> } ];
+ reuseport <boolean>;
+ rfc2308-type1 <boolean>; // ancient
+ root-delegation-only [ exclude { <string>; ... } ];
+ root-key-sentinel <boolean>;
+ rrset-order { [ class <string> ] [ type <string> ] [ name
+ <quoted_string> ] <string> <string>; ... };
+ secroots-file <quoted_string>;
+ send-cookie <boolean>;
+ serial-queries <integer>; // ancient
+ serial-query-rate <integer>;
+ serial-update-method ( date | increment | unixtime );
+ server-id ( <quoted_string> | none | hostname );
+ servfail-ttl <duration>;
+ session-keyalg <string>;
+ session-keyfile ( <quoted_string> | none );
+ session-keyname <string>;
+ sig-signing-nodes <integer>;
+ sig-signing-signatures <integer>;
+ sig-signing-type <integer>;
+ sig-validity-interval <integer> [ <integer> ];
+ sit-secret <string>; // obsolete
+ sortlist { <address_match_element>; ... };
+ stacksize ( default | unlimited | <sizeval> );
+ stale-answer-client-timeout ( disabled | off | <integer> );
+ stale-answer-enable <boolean>;
+ stale-answer-ttl <duration>;
+ stale-cache-enable <boolean>;
+ stale-refresh-time <duration>;
+ startup-notify-rate <integer>;
+ statistics-file <quoted_string>;
+ statistics-interval <integer>; // ancient
+ suppress-initial-notify <boolean>; // not yet implemented
+ synth-from-dnssec <boolean>;
+ tcp-advertised-timeout <integer>;
+ tcp-clients <integer>;
+ tcp-idle-timeout <integer>;
+ tcp-initial-timeout <integer>;
+ tcp-keepalive-timeout <integer>;
+ tcp-listen-queue <integer>;
+ tkey-dhkey <quoted_string> <integer>;
+ tkey-domain <quoted_string>;
+ tkey-gssapi-credential <quoted_string>;
+ tkey-gssapi-keytab <quoted_string>;
+ topology { <address_match_element>; ... }; // ancient
+ transfer-format ( many-answers | one-answer );
+ transfer-message-size <integer>;
+ transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * )
+ ] [ dscp <integer> ];
+ transfers-in <integer>;
+ transfers-out <integer>;
+ transfers-per-ns <integer>;
+ treat-cr-as-space <boolean>; // ancient
+ trust-anchor-telemetry <boolean>; // experimental
+ try-tcp-refresh <boolean>;
+ update-check-ksk <boolean>;
+ update-quota <integer>;
+ use-alt-transfer-source <boolean>;
+ use-id-pool <boolean>; // ancient
+ use-ixfr <boolean>; // obsolete
+ use-queryport-pool <boolean>; // obsolete
+ use-v4-udp-ports { <portrange>; ... };
+ use-v6-udp-ports { <portrange>; ... };
+ v6-bias <integer>;
+ validate-except { <string>; ... };
+ version ( <quoted_string> | none );
+ zero-no-soa-ttl <boolean>;
+ zero-no-soa-ttl-cache <boolean>;
+ zone-statistics ( full | terse | none | <boolean> );
+};
+
+parental-agents <string> [ port <integer> ] [
+ dscp <integer> ] { ( <remote-servers> |
+ <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key
+ <string> ]; ... }; // may occur multiple times
+
+plugin ( query ) <string> [ { <unspecified-text>
+ } ]; // may occur multiple times
+
+primaries <string> [ port <integer> ] [ dscp
+ <integer> ] { ( <remote-servers> |
+ <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key
+ <string> ]; ... }; // may occur multiple times
+
+server <netprefix> {
+ bogus <boolean>;
+ edns <boolean>;
+ edns-udp-size <integer>;
+ edns-version <integer>;
+ keys <server_key>;
+ max-udp-size <integer>;
+ notify-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ]
+ [ dscp <integer> ];
+ padding <integer>;
+ provide-ixfr <boolean>;
+ query-source ( ( [ address ] ( <ipv4_address> | * ) [ port (
+ <integer> | * ) ] ) | ( [ [ address ] ( <ipv4_address> | * ) ]
+ port ( <integer> | * ) ) ) [ dscp <integer> ];
+ query-source-v6 ( ( [ address ] ( <ipv6_address> | * ) [ port (
+ <integer> | * ) ] ) | ( [ [ address ] ( <ipv6_address> | * ) ]
+ port ( <integer> | * ) ) ) [ dscp <integer> ];
+ request-expire <boolean>;
+ request-ixfr <boolean>;
+ request-nsid <boolean>;
+ request-sit <boolean>; // obsolete
+ send-cookie <boolean>;
+ support-ixfr <boolean>; // obsolete
+ tcp-keepalive <boolean>;
+ tcp-only <boolean>;
+ transfer-format ( many-answers | one-answer );
+ transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * )
+ ] [ dscp <integer> ];
+ transfers <integer>;
+}; // may occur multiple times
+
+statistics-channels {
+ inet ( <ipv4_address> | <ipv6_address> |
+ * ) [ port ( <integer> | * ) ] [
+ allow { <address_match_element>; ...
+ } ]; // may occur multiple times
+}; // may occur multiple times
+
+trust-anchors { <string> ( static-key |
+ initial-key | static-ds | initial-ds )
+ <integer> <integer> <integer>
+ <quoted_string>; ... }; // may occur multiple times
+
+trusted-keys { <string> <integer>
+ <integer> <integer>
+ <quoted_string>; ... }; // may occur multiple times, deprecated
+
+view <string> [ <class> ] {
+ acache-cleaning-interval <integer>; // obsolete
+ acache-enable <boolean>; // obsolete
+ additional-from-auth <boolean>; // obsolete
+ additional-from-cache <boolean>; // obsolete
+ allow-new-zones <boolean>;
+ allow-notify { <address_match_element>; ... };
+ allow-query { <address_match_element>; ... };
+ allow-query-cache { <address_match_element>; ... };
+ allow-query-cache-on { <address_match_element>; ... };
+ allow-query-on { <address_match_element>; ... };
+ allow-recursion { <address_match_element>; ... };
+ allow-recursion-on { <address_match_element>; ... };
+ allow-transfer { <address_match_element>; ... };
+ allow-update { <address_match_element>; ... };
+ allow-update-forwarding { <address_match_element>; ... };
+ allow-v6-synthesis { <address_match_element>; ... }; // obsolete
+ also-notify [ port <integer> ] [ dscp <integer> ] { (
+ <remote-servers> | <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key <string> ]; ... };
+ alt-transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * )
+ ] [ dscp <integer> ];
+ alt-transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> |
+ * ) ] [ dscp <integer> ];
+ attach-cache <string>;
+ auth-nxdomain <boolean>; // default changed
+ auto-dnssec ( allow | maintain | off ); // deprecated
+ cache-file <quoted_string>; // deprecated
+ catalog-zones { zone <string> [ default-masters [ port <integer> ]
+ [ dscp <integer> ] { ( <remote-servers> | <ipv4_address> [ port
+ <integer> ] | <ipv6_address> [ port <integer> ] ) [ key
+ <string> ]; ... } ] [ zone-directory <quoted_string> ] [
+ in-memory <boolean> ] [ min-update-interval <duration> ]; ... };
+ check-dup-records ( fail | warn | ignore );
+ check-integrity <boolean>;
+ check-mx ( fail | warn | ignore );
+ check-mx-cname ( fail | warn | ignore );
+ check-names ( primary | master |
+ secondary | slave | response ) (
+ fail | warn | ignore ); // may occur multiple times
+ check-sibling <boolean>;
+ check-spf ( warn | ignore );
+ check-srv-cname ( fail | warn | ignore );
+ check-wildcard <boolean>;
+ cleaning-interval <integer>; // obsolete
+ clients-per-query <integer>;
+ deny-answer-addresses { <address_match_element>; ... } [
+ except-from { <string>; ... } ];
+ deny-answer-aliases { <string>; ... } [ except-from { <string>; ...
+ } ];
+ dialup ( notify | notify-passive | passive | refresh | <boolean> );
+ disable-algorithms <string> { <string>;
+ ... }; // may occur multiple times
+ disable-ds-digests <string> { <string>;
+ ... }; // may occur multiple times
+ disable-empty-zone <string>; // may occur multiple times
+ dlz <string> {
+ database <string>;
+ search <boolean>;
+ }; // may occur multiple times
+ dns64 <netprefix> {
+ break-dnssec <boolean>;
+ clients { <address_match_element>; ... };
+ exclude { <address_match_element>; ... };
+ mapped { <address_match_element>; ... };
+ recursive-only <boolean>;
+ suffix <ipv6_address>;
+ }; // may occur multiple times
+ dns64-contact <string>;
+ dns64-server <string>;
+ dnskey-sig-validity <integer>;
+ dnsrps-enable <boolean>; // not configured
+ dnsrps-options { <unspecified-text> }; // not configured
+ dnssec-accept-expired <boolean>;
+ dnssec-dnskey-kskonly <boolean>;
+ dnssec-enable <boolean>; // obsolete
+ dnssec-loadkeys-interval <integer>;
+ dnssec-lookaside ( <string>
+ trust-anchor <string> |
+ auto | no ); // obsolete, may occur multiple times
+ dnssec-must-be-secure <string> <boolean>; // may occur multiple times
+ dnssec-policy <string>;
+ dnssec-secure-to-insecure <boolean>;
+ dnssec-update-mode ( maintain | no-resign );
+ dnssec-validation ( yes | no | auto );
+ dnstap { ( all | auth | client | forwarder | resolver | update ) [
+ ( query | response ) ]; ... };
+ dual-stack-servers [ port <integer> ] { ( <quoted_string> [ port
+ <integer> ] [ dscp <integer> ] | <ipv4_address> [ port
+ <integer> ] [ dscp <integer> ] | <ipv6_address> [ port
+ <integer> ] [ dscp <integer> ] ); ... };
+ dyndb <string> <quoted_string> {
+ <unspecified-text> }; // may occur multiple times
+ edns-udp-size <integer>;
+ empty-contact <string>;
+ empty-server <string>;
+ empty-zones-enable <boolean>;
+ fetch-glue <boolean>; // ancient
+ fetch-quota-params <integer> <fixedpoint> <fixedpoint> <fixedpoint>;
+ fetches-per-server <integer> [ ( drop | fail ) ];
+ fetches-per-zone <integer> [ ( drop | fail ) ];
+ filter-aaaa { <address_match_element>; ... }; // obsolete
+ filter-aaaa-on-v4 <boolean>; // obsolete
+ filter-aaaa-on-v6 <boolean>; // obsolete
+ forward ( first | only );
+ forwarders [ port <integer> ] [ dscp <integer> ] { ( <ipv4_address>
+ | <ipv6_address> ) [ port <integer> ] [ dscp <integer> ]; ... };
+ glue-cache <boolean>;
+ ixfr-from-differences ( primary | master | secondary | slave |
+ <boolean> );
+ key <string> {
+ algorithm <string>;
+ secret <string>;
+ }; // may occur multiple times
+ key-directory <quoted_string>;
+ lame-ttl <duration>;
+ lmdb-mapsize <sizeval>;
+ maintain-ixfr-base <boolean>; // ancient
+ managed-keys { <string> (
+ static-key | initial-key
+ | static-ds | initial-ds
+ ) <integer> <integer>
+ <integer>
+ <quoted_string>; ... }; // may occur multiple times, deprecated
+ masterfile-format ( map | raw | text );
+ masterfile-style ( full | relative );
+ match-clients { <address_match_element>; ... };
+ match-destinations { <address_match_element>; ... };
+ match-recursive-only <boolean>;
+ max-acache-size ( unlimited | <sizeval> ); // obsolete
+ max-cache-size ( default | unlimited | <sizeval> | <percentage> );
+ max-cache-ttl <duration>;
+ max-clients-per-query <integer>;
+ max-ixfr-log-size ( default | unlimited | <sizeval> ); // ancient
+ max-ixfr-ratio ( unlimited | <percentage> );
+ max-journal-size ( default | unlimited | <sizeval> );
+ max-ncache-ttl <duration>;
+ max-records <integer>;
+ max-recursion-depth <integer>;
+ max-recursion-queries <integer>;
+ max-refresh-time <integer>;
+ max-retry-time <integer>;
+ max-stale-ttl <duration>;
+ max-transfer-idle-in <integer>;
+ max-transfer-idle-out <integer>;
+ max-transfer-time-in <integer>;
+ max-transfer-time-out <integer>;
+ max-udp-size <integer>;
+ max-zone-ttl ( unlimited | <duration> );
+ message-compression <boolean>;
+ min-cache-ttl <duration>;
+ min-ncache-ttl <duration>;
+ min-refresh-time <integer>;
+ min-retry-time <integer>;
+ min-roots <integer>; // ancient
+ minimal-any <boolean>;
+ minimal-responses ( no-auth | no-auth-recursive | <boolean> );
+ multi-master <boolean>;
+ new-zones-directory <quoted_string>;
+ no-case-compress { <address_match_element>; ... };
+ nocookie-udp-size <integer>;
+ nosit-udp-size <integer>; // obsolete
+ notify ( explicit | master-only | primary-only | <boolean> );
+ notify-delay <integer>;
+ notify-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ]
+ [ dscp <integer> ];
+ notify-to-soa <boolean>;
+ nsec3-test-zone <boolean>; // test only
+ nta-lifetime <duration>;
+ nta-recheck <duration>;
+ nxdomain-redirect <string>;
+ parental-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ parental-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * )
+ ] [ dscp <integer> ];
+ plugin ( query ) <string> [ {
+ <unspecified-text> } ]; // may occur multiple times
+ preferred-glue <string>;
+ prefetch <integer> [ <integer> ];
+ provide-ixfr <boolean>;
+ qname-minimization ( strict | relaxed | disabled | off );
+ query-source ( ( [ address ] ( <ipv4_address> | * ) [ port (
+ <integer> | * ) ] ) | ( [ [ address ] ( <ipv4_address> | * ) ]
+ port ( <integer> | * ) ) ) [ dscp <integer> ];
+ query-source-v6 ( ( [ address ] ( <ipv6_address> | * ) [ port (
+ <integer> | * ) ] ) | ( [ [ address ] ( <ipv6_address> | * ) ]
+ port ( <integer> | * ) ) ) [ dscp <integer> ];
+ queryport-pool-ports <integer>; // obsolete
+ queryport-pool-updateinterval <integer>; // obsolete
+ rate-limit {
+ all-per-second <integer>;
+ errors-per-second <integer>;
+ exempt-clients { <address_match_element>; ... };
+ ipv4-prefix-length <integer>;
+ ipv6-prefix-length <integer>;
+ log-only <boolean>;
+ max-table-size <integer>;
+ min-table-size <integer>;
+ nodata-per-second <integer>;
+ nxdomains-per-second <integer>;
+ qps-scale <integer>;
+ referrals-per-second <integer>;
+ responses-per-second <integer>;
+ slip <integer>;
+ window <integer>;
+ };
+ recursion <boolean>;
+ request-expire <boolean>;
+ request-ixfr <boolean>;
+ request-nsid <boolean>;
+ request-sit <boolean>; // obsolete
+ require-server-cookie <boolean>;
+ resolver-nonbackoff-tries <integer>;
+ resolver-query-timeout <integer>;
+ resolver-retry-interval <integer>;
+ response-padding { <address_match_element>; ... } block-size
+ <integer>;
+ response-policy { zone <string> [ add-soa <boolean> ] [ log
+ <boolean> ] [ max-policy-ttl <duration> ] [ min-update-interval
+ <duration> ] [ policy ( cname | disabled | drop | given | no-op
+ | nodata | nxdomain | passthru | tcp-only <quoted_string> ) ] [
+ recursive-only <boolean> ] [ nsip-enable <boolean> ] [
+ nsdname-enable <boolean> ]; ... } [ add-soa <boolean> ] [
+ break-dnssec <boolean> ] [ max-policy-ttl <duration> ] [
+ min-update-interval <duration> ] [ min-ns-dots <integer> ] [
+ nsip-wait-recurse <boolean> ] [ qname-wait-recurse <boolean> ]
+ [ recursive-only <boolean> ] [ nsip-enable <boolean> ] [
+ nsdname-enable <boolean> ] [ dnsrps-enable <boolean> ] [
+ dnsrps-options { <unspecified-text> } ];
+ rfc2308-type1 <boolean>; // ancient
+ root-delegation-only [ exclude { <string>; ... } ];
+ root-key-sentinel <boolean>;
+ rrset-order { [ class <string> ] [ type <string> ] [ name
+ <quoted_string> ] <string> <string>; ... };
+ send-cookie <boolean>;
+ serial-update-method ( date | increment | unixtime );
+ server <netprefix> {
+ bogus <boolean>;
+ edns <boolean>;
+ edns-udp-size <integer>;
+ edns-version <integer>;
+ keys <server_key>;
+ max-udp-size <integer>;
+ notify-source ( <ipv4_address> | * ) [ port ( <integer> | *
+ ) ] [ dscp <integer> ];
+ notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer>
+ | * ) ] [ dscp <integer> ];
+ padding <integer>;
+ provide-ixfr <boolean>;
+ query-source ( ( [ address ] ( <ipv4_address> | * ) [ port
+ ( <integer> | * ) ] ) | ( [ [ address ] (
+ <ipv4_address> | * ) ] port ( <integer> | * ) ) ) [
+ dscp <integer> ];
+ query-source-v6 ( ( [ address ] ( <ipv6_address> | * ) [
+ port ( <integer> | * ) ] ) | ( [ [ address ] (
+ <ipv6_address> | * ) ] port ( <integer> | * ) ) ) [
+ dscp <integer> ];
+ request-expire <boolean>;
+ request-ixfr <boolean>;
+ request-nsid <boolean>;
+ request-sit <boolean>; // obsolete
+ send-cookie <boolean>;
+ support-ixfr <boolean>; // obsolete
+ tcp-keepalive <boolean>;
+ tcp-only <boolean>;
+ transfer-format ( many-answers | one-answer );
+ transfer-source ( <ipv4_address> | * ) [ port ( <integer> |
+ * ) ] [ dscp <integer> ];
+ transfer-source-v6 ( <ipv6_address> | * ) [ port (
+ <integer> | * ) ] [ dscp <integer> ];
+ transfers <integer>;
+ }; // may occur multiple times
+ servfail-ttl <duration>;
+ sig-signing-nodes <integer>;
+ sig-signing-signatures <integer>;
+ sig-signing-type <integer>;
+ sig-validity-interval <integer> [ <integer> ];
+ sortlist { <address_match_element>; ... };
+ stale-answer-client-timeout ( disabled | off | <integer> );
+ stale-answer-enable <boolean>;
+ stale-answer-ttl <duration>;
+ stale-cache-enable <boolean>;
+ stale-refresh-time <duration>;
+ suppress-initial-notify <boolean>; // not yet implemented
+ synth-from-dnssec <boolean>;
+ topology { <address_match_element>; ... }; // ancient
+ transfer-format ( many-answers | one-answer );
+ transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * )
+ ] [ dscp <integer> ];
+ trust-anchor-telemetry <boolean>; // experimental
+ trust-anchors { <string> ( static-key |
+ initial-key | static-ds | initial-ds
+ ) <integer> <integer> <integer>
+ <quoted_string>; ... }; // may occur multiple times
+ trusted-keys { <string>
+ <integer> <integer>
+ <integer>
+ <quoted_string>; ... }; // may occur multiple times, deprecated
+ try-tcp-refresh <boolean>;
+ update-check-ksk <boolean>;
+ use-alt-transfer-source <boolean>;
+ use-queryport-pool <boolean>; // obsolete
+ v6-bias <integer>;
+ validate-except { <string>; ... };
+ zero-no-soa-ttl <boolean>;
+ zero-no-soa-ttl-cache <boolean>;
+ zone <string> [ <class> ] {
+ allow-notify { <address_match_element>; ... };
+ 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>; ... };
+ also-notify [ port <integer> ] [ dscp <integer> ] { (
+ <remote-servers> | <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key <string> ];
+ ... };
+ alt-transfer-source ( <ipv4_address> | * ) [ port (
+ <integer> | * ) ] [ dscp <integer> ];
+ alt-transfer-source-v6 ( <ipv6_address> | * ) [ port (
+ <integer> | * ) ] [ dscp <integer> ];
+ auto-dnssec ( allow | maintain | off ); // deprecated
+ check-dup-records ( fail | warn | ignore );
+ check-integrity <boolean>;
+ check-mx ( fail | warn | ignore );
+ check-mx-cname ( fail | warn | ignore );
+ check-names ( fail | warn | ignore );
+ check-sibling <boolean>;
+ check-spf ( warn | ignore );
+ check-srv-cname ( fail | warn | ignore );
+ check-wildcard <boolean>;
+ database <string>;
+ delegation-only <boolean>;
+ dialup ( notify | notify-passive | passive | refresh |
+ <boolean> );
+ dlz <string>;
+ dnskey-sig-validity <integer>;
+ dnssec-dnskey-kskonly <boolean>;
+ dnssec-loadkeys-interval <integer>;
+ dnssec-policy <string>;
+ dnssec-secure-to-insecure <boolean>;
+ dnssec-update-mode ( maintain | no-resign );
+ file <quoted_string>;
+ forward ( first | only );
+ forwarders [ port <integer> ] [ dscp <integer> ] { (
+ <ipv4_address> | <ipv6_address> ) [ port <integer> ] [
+ dscp <integer> ]; ... };
+ in-view <string>;
+ inline-signing <boolean>;
+ ixfr-base <quoted_string>; // ancient
+ ixfr-from-differences <boolean>;
+ ixfr-tmp-file <quoted_string>; // ancient
+ journal <quoted_string>;
+ key-directory <quoted_string>;
+ maintain-ixfr-base <boolean>; // ancient
+ masterfile-format ( map | raw | text );
+ masterfile-style ( full | relative );
+ masters [ port <integer> ] [ dscp <integer> ] { (
+ <remote-servers> | <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key <string> ];
+ ... };
+ max-ixfr-log-size ( default | unlimited |
+ <sizeval> ); // ancient
+ max-ixfr-ratio ( unlimited | <percentage> );
+ max-journal-size ( default | unlimited | <sizeval> );
+ max-records <integer>;
+ max-refresh-time <integer>;
+ max-retry-time <integer>;
+ max-transfer-idle-in <integer>;
+ max-transfer-idle-out <integer>;
+ max-transfer-time-in <integer>;
+ max-transfer-time-out <integer>;
+ max-zone-ttl ( unlimited | <duration> );
+ min-refresh-time <integer>;
+ min-retry-time <integer>;
+ multi-master <boolean>;
+ notify ( explicit | master-only | primary-only | <boolean> );
+ notify-delay <integer>;
+ notify-source ( <ipv4_address> | * ) [ port ( <integer> | *
+ ) ] [ dscp <integer> ];
+ notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer>
+ | * ) ] [ dscp <integer> ];
+ notify-to-soa <boolean>;
+ nsec3-test-zone <boolean>; // test only
+ parental-agents [ port <integer> ] [ dscp <integer> ] { (
+ <remote-servers> | <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key <string> ];
+ ... };
+ parental-source ( <ipv4_address> | * ) [ port ( <integer> |
+ * ) ] [ dscp <integer> ];
+ parental-source-v6 ( <ipv6_address> | * ) [ port (
+ <integer> | * ) ] [ dscp <integer> ];
+ primaries [ port <integer> ] [ dscp <integer> ] { (
+ <remote-servers> | <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key <string> ];
+ ... };
+ pubkey <integer> <integer> <integer>
+ <quoted_string>; // ancient
+ request-expire <boolean>;
+ request-ixfr <boolean>;
+ serial-update-method ( date | increment | unixtime );
+ server-addresses { ( <ipv4_address> | <ipv6_address> ); ... };
+ server-names { <string>; ... };
+ sig-signing-nodes <integer>;
+ sig-signing-signatures <integer>;
+ sig-signing-type <integer>;
+ sig-validity-interval <integer> [ <integer> ];
+ transfer-source ( <ipv4_address> | * ) [ port ( <integer> |
+ * ) ] [ dscp <integer> ];
+ transfer-source-v6 ( <ipv6_address> | * ) [ port (
+ <integer> | * ) ] [ dscp <integer> ];
+ try-tcp-refresh <boolean>;
+ type ( primary | master | secondary | slave | mirror |
+ delegation-only | forward | hint | redirect |
+ static-stub | stub );
+ update-check-ksk <boolean>;
+ update-policy ( local | { ( deny | grant ) <string> (
+ 6to4-self | external | krb5-self | krb5-selfsub |
+ krb5-subdomain | ms-self | ms-selfsub | ms-subdomain |
+ name | self | selfsub | selfwild | subdomain | tcp-self
+ | wildcard | zonesub ) [ <string> ] <rrtypelist>; ... } );
+ use-alt-transfer-source <boolean>;
+ zero-no-soa-ttl <boolean>;
+ zone-statistics ( full | terse | none | <boolean> );
+ }; // may occur multiple times
+ zone-statistics ( full | terse | none | <boolean> );
+}; // may occur multiple times
+
+zone <string> [ <class> ] {
+ allow-notify { <address_match_element>; ... };
+ 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>; ... };
+ also-notify [ port <integer> ] [ dscp <integer> ] { (
+ <remote-servers> | <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key <string> ]; ... };
+ alt-transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * )
+ ] [ dscp <integer> ];
+ alt-transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> |
+ * ) ] [ dscp <integer> ];
+ auto-dnssec ( allow | maintain | off ); // deprecated
+ check-dup-records ( fail | warn | ignore );
+ check-integrity <boolean>;
+ check-mx ( fail | warn | ignore );
+ check-mx-cname ( fail | warn | ignore );
+ check-names ( fail | warn | ignore );
+ check-sibling <boolean>;
+ check-spf ( warn | ignore );
+ check-srv-cname ( fail | warn | ignore );
+ check-wildcard <boolean>;
+ database <string>;
+ delegation-only <boolean>;
+ dialup ( notify | notify-passive | passive | refresh | <boolean> );
+ dlz <string>;
+ dnskey-sig-validity <integer>;
+ dnssec-dnskey-kskonly <boolean>;
+ dnssec-loadkeys-interval <integer>;
+ dnssec-policy <string>;
+ dnssec-secure-to-insecure <boolean>;
+ dnssec-update-mode ( maintain | no-resign );
+ file <quoted_string>;
+ forward ( first | only );
+ forwarders [ port <integer> ] [ dscp <integer> ] { ( <ipv4_address>
+ | <ipv6_address> ) [ port <integer> ] [ dscp <integer> ]; ... };
+ in-view <string>;
+ inline-signing <boolean>;
+ ixfr-base <quoted_string>; // ancient
+ ixfr-from-differences <boolean>;
+ ixfr-tmp-file <quoted_string>; // ancient
+ journal <quoted_string>;
+ key-directory <quoted_string>;
+ maintain-ixfr-base <boolean>; // ancient
+ masterfile-format ( map | raw | text );
+ masterfile-style ( full | relative );
+ masters [ port <integer> ] [ dscp <integer> ] { ( <remote-servers>
+ | <ipv4_address> [ port <integer> ] | <ipv6_address> [ port
+ <integer> ] ) [ key <string> ]; ... };
+ max-ixfr-log-size ( default | unlimited | <sizeval> ); // ancient
+ max-ixfr-ratio ( unlimited | <percentage> );
+ max-journal-size ( default | unlimited | <sizeval> );
+ max-records <integer>;
+ max-refresh-time <integer>;
+ max-retry-time <integer>;
+ max-transfer-idle-in <integer>;
+ max-transfer-idle-out <integer>;
+ max-transfer-time-in <integer>;
+ max-transfer-time-out <integer>;
+ max-zone-ttl ( unlimited | <duration> );
+ min-refresh-time <integer>;
+ min-retry-time <integer>;
+ multi-master <boolean>;
+ notify ( explicit | master-only | primary-only | <boolean> );
+ notify-delay <integer>;
+ notify-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ]
+ [ dscp <integer> ];
+ notify-to-soa <boolean>;
+ nsec3-test-zone <boolean>; // test only
+ parental-agents [ port <integer> ] [ dscp <integer> ] { (
+ <remote-servers> | <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key <string> ]; ... };
+ parental-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ parental-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * )
+ ] [ dscp <integer> ];
+ primaries [ port <integer> ] [ dscp <integer> ] { (
+ <remote-servers> | <ipv4_address> [ port <integer> ] |
+ <ipv6_address> [ port <integer> ] ) [ key <string> ]; ... };
+ pubkey <integer> <integer> <integer> <quoted_string>; // ancient
+ request-expire <boolean>;
+ request-ixfr <boolean>;
+ serial-update-method ( date | increment | unixtime );
+ server-addresses { ( <ipv4_address> | <ipv6_address> ); ... };
+ server-names { <string>; ... };
+ sig-signing-nodes <integer>;
+ sig-signing-signatures <integer>;
+ sig-signing-type <integer>;
+ sig-validity-interval <integer> [ <integer> ];
+ transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ] [
+ dscp <integer> ];
+ transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * )
+ ] [ dscp <integer> ];
+ try-tcp-refresh <boolean>;
+ type ( primary | master | secondary | slave | mirror |
+ delegation-only | forward | hint | redirect | static-stub |
+ stub );
+ update-check-ksk <boolean>;
+ update-policy ( local | { ( deny | grant ) <string> ( 6to4-self |
+ external | krb5-self | krb5-selfsub | krb5-subdomain | ms-self
+ | ms-selfsub | ms-subdomain | name | self | selfsub | selfwild
+ | subdomain | tcp-self | wildcard | zonesub ) [ <string> ]
+ <rrtypelist>; ... } );
+ use-alt-transfer-source <boolean>;
+ zero-no-soa-ttl <boolean>;
+ zone-statistics ( full | terse | none | <boolean> );
+}; // may occur multiple times
+