contrib/bind9/doc/misc/options

   1
   2 This is a summary of the named.conf options supported by
   3 this version of BIND 9.
   4
   5 acl <string> { <address_match_element>; ... };
   6
   7 controls {
   8         inet ( <ipv4_address> | <ipv6_address> | * ) [ port ( <integer> | *
   9             ) ] allow { <address_match_element>; ... } [ keys { <string>;
  10             ... } ];
  11         unix <quoted_string> perm <integer> owner <integer> group <integer>
  12             [ keys { <string>; ... } ];
  13 };
  14
  15 dlz <string> {
  16         database <string>;
  17 };
  18
  19 key <string> {
  20         algorithm <string>;
  21         secret <string>;
  22 };
  23
  24 logging {
  25         category <string> { <string>; ... };
  26         channel <string> {
  27                 file <quoted_string> [ versions ( "unlimited" | <integer> )
  28                     ] [ size <size> ];
  29                 null;
  30                 print-category <boolean>;
  31                 print-severity <boolean>;
  32                 print-time <boolean>;
  33                 severity <log_severity>;
  34                 stderr;
  35                 syslog <optional_facility>;
  36         };
  37 };
  38
  39 lwres {
  40         listen-on [ port <integer> ] { ( <ipv4_address> | <ipv6_address> )
  41             [ port <integer> ]; ... };
  42         ndots <integer>;
  43         search { <string>; ... };
  44         view <string> <optional_class>;
  45 };
  46
  47 managed-keys { <string> <string> <integer> <integer> <integer>
  48     <quoted_string>; ... };
  49
  50 masters <string> [ port <integer> ] { ( <masters> | <ipv4_address> [ port
  51     <integer> ] | <ipv6_address> [ port <integer> ] ) [ key <string> ]; ... };
  52
  53 options {
  54         acache-cleaning-interval <integer>;
  55         acache-enable <boolean>;
  56         additional-from-auth <boolean>;
  57         additional-from-cache <boolean>;
  58         allow-new-zones <boolean>;
  59         allow-notify { <address_match_element>; ... };
  60         allow-query { <address_match_element>; ... };
  61         allow-query-cache { <address_match_element>; ... };
  62         allow-query-cache-on { <address_match_element>; ... };
  63         allow-query-on { <address_match_element>; ... };
  64         allow-recursion { <address_match_element>; ... };
  65         allow-recursion-on { <address_match_element>; ... };
  66         allow-transfer { <address_match_element>; ... };
  67         allow-update { <address_match_element>; ... };
  68         allow-update-forwarding { <address_match_element>; ... };
  69         allow-v6-synthesis { <address_match_element>; ... }; // obsolete
  70         also-notify [ port <integer> ] { ( <ipv4_address> | <ipv6_address>
  71             ) [ port <integer> ]; ... };
  72         alt-transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
  73         alt-transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> |
  74             * ) ];
  75         attach-cache <string>;
  76         auth-nxdomain <boolean>; // default changed
  77         auto-dnssec ( allow | maintain | off );
  78         avoid-v4-udp-ports { <portrange>; ... };
  79         avoid-v6-udp-ports { <portrange>; ... };
  80         bindkeys-file <quoted_string>;
  81         blackhole { <address_match_element>; ... };
  82         cache-file <quoted_string>;
  83         check-dup-records ( fail | warn | ignore );
  84         check-integrity <boolean>;
  85         check-mx ( fail | warn | ignore );
  86         check-mx-cname ( fail | warn | ignore );
  87         check-names ( master | slave | response ) ( fail | warn | ignore );
  88         check-sibling <boolean>;
  89         check-srv-cname ( fail | warn | ignore );
  90         check-wildcard <boolean>;
  91         cleaning-interval <integer>;
  92         clients-per-query <integer>;
  93         coresize <size>;
  94         datasize <size>;
  95         deallocate-on-exit <boolean>; // obsolete
  96         deny-answer-addresses { <address_match_element>; ... } [
  97             except-from { <quoted_string>; ... } ];
  98         deny-answer-aliases { <quoted_string>; ... } [ except-from {
  99             <quoted_string>; ... } ];
 100         dialup <dialuptype>;
 101         directory <quoted_string>;
 102         disable-algorithms <string> { <string>; ... };
 103         disable-empty-zone <string>;
 104         dns64 <netprefix> {
 105                 break-dnssec <boolean>;
 106                 clients { <address_match_element>; ... };
 107                 exclude { <address_match_element>; ... };
 108                 mapped { <address_match_element>; ... };
 109                 recursive-only <boolean>;
 110                 suffix <ipv6_address>;
 111         };
 112         dns64-contact <string>;
 113         dns64-server <string>;
 114         dnssec-accept-expired <boolean>;
 115         dnssec-dnskey-kskonly <boolean>;
 116         dnssec-enable <boolean>;
 117         dnssec-lookaside ( <string> trust-anchor <string> | auto | no );
 118         dnssec-must-be-secure <string> <boolean>;
 119         dnssec-secure-to-insecure <boolean>;
 120         dnssec-validation ( yes | no | auto );
 121         dual-stack-servers [ port <integer> ] { ( <quoted_string> [ port
 122             <integer> ] | <ipv4_address> [ port <integer> ] |
 123             <ipv6_address> [ port <integer> ] ); ... };
 124         dump-file <quoted_string>;
 125         edns-udp-size <integer>;
 126         empty-contact <string>;
 127         empty-server <string>;
 128         empty-zones-enable <boolean>;
 129         fake-iquery <boolean>; // obsolete
 130         fetch-glue <boolean>; // obsolete
 131         files <size>;
 132         filter-aaaa { <address_match_element>; ... }; // not configured
 133         filter-aaaa-on-v4 <v4_aaaa>; // not configured
 134         flush-zones-on-shutdown <boolean>;
 135         forward ( first | only );
 136         forwarders [ port <integer> ] { ( <ipv4_address> | <ipv6_address> )
 137             [ port <integer> ]; ... };
 138         has-old-clients <boolean>; // obsolete
 139         heartbeat-interval <integer>;
 140         host-statistics <boolean>; // not implemented
 141         host-statistics-max <integer>; // not implemented
 142         hostname ( <quoted_string> | none );
 143         interface-interval <integer>;
 144         ixfr-from-differences <ixfrdiff>;
 145         key-directory <quoted_string>;
 146         lame-ttl <integer>;
 147         listen-on [ port <integer> ] { <address_match_element>; ... };
 148         listen-on-v6 [ port <integer> ] { <address_match_element>; ... };
 149         maintain-ixfr-base <boolean>; // obsolete
 150         managed-keys-directory <quoted_string>;
 151         masterfile-format ( text | raw );
 152         match-mapped-addresses <boolean>;
 153         max-acache-size <size_no_default>;
 154         max-cache-size <size_no_default>;
 155         max-cache-ttl <integer>;
 156         max-clients-per-query <integer>;
 157         max-ixfr-log-size <size>; // obsolete
 158         max-journal-size <size_no_default>;
 159         max-ncache-ttl <integer>;
 160         max-refresh-time <integer>;
 161         max-retry-time <integer>;
 162         max-transfer-idle-in <integer>;
 163         max-transfer-idle-out <integer>;
 164         max-transfer-time-in <integer>;
 165         max-transfer-time-out <integer>;
 166         max-udp-size <integer>;
 167         memstatistics <boolean>;
 168         memstatistics-file <quoted_string>;
 169         min-refresh-time <integer>;
 170         min-retry-time <integer>;
 171         min-roots <integer>; // not implemented
 172         minimal-responses <boolean>;
 173         multi-master <boolean>;
 174         multiple-cnames <boolean>; // obsolete
 175         named-xfer <quoted_string>; // obsolete
 176         notify <notifytype>;
 177         notify-delay <integer>;
 178         notify-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
 179         notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ];
 180         notify-to-soa <boolean>;
 181         nsec3-test-zone <boolean>; // test only
 182         pid-file ( <quoted_string> | none );
 183         port <integer>;
 184         preferred-glue <string>;
 185         provide-ixfr <boolean>;
 186         query-source <querysource4>;
 187         query-source-v6 <querysource6>;
 188         querylog <boolean>;
 189         queryport-pool-ports <integer>; // obsolete
 190         queryport-pool-updateinterval <integer>; // obsolete
 191         random-device <quoted_string>;
 192         recursing-file <quoted_string>;
 193         recursion <boolean>;
 194         recursive-clients <integer>;
 195         request-ixfr <boolean>;
 196         request-nsid <boolean>;
 197         reserved-sockets <integer>;
 198         resolver-query-timeout <integer>;
 199         response-policy { zone <quoted_string> [ policy ( given | disabled
 200             | passthru | no-op | nxdomain | nodata | cname <quoted_string>
 201             ) ] [ recursive-only <boolean> ] [ max-policy-ttl <integer> ];
 202             ... } [ recursive-only <boolean> ] [ break-dnssec <boolean> ] [
 203             max-policy-ttl <integer> ];
 204         rfc2308-type1 <boolean>; // not yet implemented
 205         root-delegation-only [ exclude { <quoted_string>; ... } ];
 206         rrset-order { [ class <string> ] [ type <string> ] [ name
 207             <quoted_string> ] <string> <string>; ... };
 208         secroots-file <quoted_string>;
 209         serial-queries <integer>; // obsolete
 210         serial-query-rate <integer>;
 211         server-id ( <quoted_string> | none | hostname );
 212         session-keyalg <string>;
 213         session-keyfile ( <quoted_string> | none );
 214         session-keyname <string>;
 215         sig-signing-nodes <integer>;
 216         sig-signing-signatures <integer>;
 217         sig-signing-type <integer>;
 218         sig-validity-interval <integer> [ <integer> ];
 219         sortlist { <address_match_element>; ... };
 220         stacksize <size>;
 221         statistics-file <quoted_string>;
 222         statistics-interval <integer>; // not yet implemented
 223         suppress-initial-notify <boolean>; // not yet implemented
 224         tcp-clients <integer>;
 225         tcp-listen-queue <integer>;
 226         tkey-dhkey <quoted_string> <integer>;
 227         tkey-domain <quoted_string>;
 228         tkey-gssapi-credential <quoted_string>;
 229         tkey-gssapi-keytab <quoted_string>;
 230         topology { <address_match_element>; ... }; // not implemented
 231         transfer-format ( many-answers | one-answer );
 232         transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
 233         transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ];
 234         transfers-in <integer>;
 235         transfers-out <integer>;
 236         transfers-per-ns <integer>;
 237         treat-cr-as-space <boolean>; // obsolete
 238         try-tcp-refresh <boolean>;
 239         update-check-ksk <boolean>;
 240         use-alt-transfer-source <boolean>;
 241         use-id-pool <boolean>; // obsolete
 242         use-ixfr <boolean>;
 243         use-queryport-pool <boolean>; // obsolete
 244         use-v4-udp-ports { <portrange>; ... };
 245         use-v6-udp-ports { <portrange>; ... };
 246         version ( <quoted_string> | none );
 247         zero-no-soa-ttl <boolean>;
 248         zero-no-soa-ttl-cache <boolean>;
 249         zone-statistics <boolean>;
 250 };
 251
 252 server <netprefix> {
 253         bogus <boolean>;
 254         edns <boolean>;
 255         edns-udp-size <integer>;
 256         keys <server_key>;
 257         max-udp-size <integer>;
 258         notify-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
 259         notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ];
 260         provide-ixfr <boolean>;
 261         query-source <querysource4>;
 262         query-source-v6 <querysource6>;
 263         request-ixfr <boolean>;
 264         support-ixfr <boolean>; // obsolete
 265         transfer-format ( many-answers | one-answer );
 266         transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
 267         transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ];
 268         transfers <integer>;
 269 };
 270
 271 statistics-channels {
 272         inet ( <ipv4_address> | <ipv6_address> | * ) [ port ( <integer> | *
 273             ) ] [ allow { <address_match_element>; ... } ];
 274 };
 275
 276 trusted-keys { <string> <integer> <integer> <integer> <quoted_string>; ... };
 277
 278 view <string> <optional_class> {
 279         acache-cleaning-interval <integer>;
 280         acache-enable <boolean>;
 281         additional-from-auth <boolean>;
 282         additional-from-cache <boolean>;
 283         allow-new-zones <boolean>;
 284         allow-notify { <address_match_element>; ... };
 285         allow-query { <address_match_element>; ... };
 286         allow-query-cache { <address_match_element>; ... };
 287         allow-query-cache-on { <address_match_element>; ... };
 288         allow-query-on { <address_match_element>; ... };
 289         allow-recursion { <address_match_element>; ... };
 290         allow-recursion-on { <address_match_element>; ... };
 291         allow-transfer { <address_match_element>; ... };
 292         allow-update { <address_match_element>; ... };
 293         allow-update-forwarding { <address_match_element>; ... };
 294         allow-v6-synthesis { <address_match_element>; ... }; // obsolete
 295         also-notify [ port <integer> ] { ( <ipv4_address> | <ipv6_address>
 296             ) [ port <integer> ]; ... };
 297         alt-transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
 298         alt-transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> |
 299             * ) ];
 300         attach-cache <string>;
 301         auth-nxdomain <boolean>; // default changed
 302         auto-dnssec ( allow | maintain | off );
 303         cache-file <quoted_string>;
 304         check-dup-records ( fail | warn | ignore );
 305         check-integrity <boolean>;
 306         check-mx ( fail | warn | ignore );
 307         check-mx-cname ( fail | warn | ignore );
 308         check-names ( master | slave | response ) ( fail | warn | ignore );
 309         check-sibling <boolean>;
 310         check-srv-cname ( fail | warn | ignore );
 311         check-wildcard <boolean>;
 312         cleaning-interval <integer>;
 313         clients-per-query <integer>;
 314         database <string>;
 315         deny-answer-addresses { <address_match_element>; ... } [
 316             except-from { <quoted_string>; ... } ];
 317         deny-answer-aliases { <quoted_string>; ... } [ except-from {
 318             <quoted_string>; ... } ];
 319         dialup <dialuptype>;
 320         disable-algorithms <string> { <string>; ... };
 321         disable-empty-zone <string>;
 322         dlz <string> {
 323                 database <string>;
 324         };
 325         dns64 <netprefix> {
 326                 break-dnssec <boolean>;
 327                 clients { <address_match_element>; ... };
 328                 exclude { <address_match_element>; ... };
 329                 mapped { <address_match_element>; ... };
 330                 recursive-only <boolean>;
 331                 suffix <ipv6_address>;
 332         };
 333         dns64-contact <string>;
 334         dns64-server <string>;
 335         dnssec-accept-expired <boolean>;
 336         dnssec-dnskey-kskonly <boolean>;
 337         dnssec-enable <boolean>;
 338         dnssec-lookaside ( <string> trust-anchor <string> | auto | no );
 339         dnssec-must-be-secure <string> <boolean>;
 340         dnssec-secure-to-insecure <boolean>;
 341         dnssec-validation ( yes | no | auto );
 342         dual-stack-servers [ port <integer> ] { ( <quoted_string> [ port
 343             <integer> ] | <ipv4_address> [ port <integer> ] |
 344             <ipv6_address> [ port <integer> ] ); ... };
 345         edns-udp-size <integer>;
 346         empty-contact <string>;
 347         empty-server <string>;
 348         empty-zones-enable <boolean>;
 349         fetch-glue <boolean>; // obsolete
 350         filter-aaaa { <address_match_element>; ... }; // not configured
 351         filter-aaaa-on-v4 <v4_aaaa>; // not configured
 352         forward ( first | only );
 353         forwarders [ port <integer> ] { ( <ipv4_address> | <ipv6_address> )
 354             [ port <integer> ]; ... };
 355         ixfr-from-differences <ixfrdiff>;
 356         key <string> {
 357                 algorithm <string>;
 358                 secret <string>;
 359         };
 360         key-directory <quoted_string>;
 361         lame-ttl <integer>;
 362         maintain-ixfr-base <boolean>; // obsolete
 363         managed-keys { <string> <string> <integer> <integer> <integer>
 364             <quoted_string>; ... };
 365         masterfile-format ( text | raw );
 366         match-clients { <address_match_element>; ... };
 367         match-destinations { <address_match_element>; ... };
 368         match-recursive-only <boolean>;
 369         max-acache-size <size_no_default>;
 370         max-cache-size <size_no_default>;
 371         max-cache-ttl <integer>;
 372         max-clients-per-query <integer>;
 373         max-ixfr-log-size <size>; // obsolete
 374         max-journal-size <size_no_default>;
 375         max-ncache-ttl <integer>;
 376         max-refresh-time <integer>;
 377         max-retry-time <integer>;
 378         max-transfer-idle-in <integer>;
 379         max-transfer-idle-out <integer>;
 380         max-transfer-time-in <integer>;
 381         max-transfer-time-out <integer>;
 382         max-udp-size <integer>;
 383         min-refresh-time <integer>;
 384         min-retry-time <integer>;
 385         min-roots <integer>; // not implemented
 386         minimal-responses <boolean>;
 387         multi-master <boolean>;
 388         notify <notifytype>;
 389         notify-delay <integer>;
 390         notify-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
 391         notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ];
 392         notify-to-soa <boolean>;
 393         nsec3-test-zone <boolean>; // test only
 394         preferred-glue <string>;
 395         provide-ixfr <boolean>;
 396         query-source <querysource4>;
 397         query-source-v6 <querysource6>;
 398         queryport-pool-ports <integer>; // obsolete
 399         queryport-pool-updateinterval <integer>; // obsolete
 400         recursion <boolean>;
 401         request-ixfr <boolean>;
 402         request-nsid <boolean>;
 403         resolver-query-timeout <integer>;
 404         response-policy { zone <quoted_string> [ policy ( given | disabled
 405             | passthru | no-op | nxdomain | nodata | cname <quoted_string>
 406             ) ] [ recursive-only <boolean> ] [ max-policy-ttl <integer> ];
 407             ... } [ recursive-only <boolean> ] [ break-dnssec <boolean> ] [
 408             max-policy-ttl <integer> ];
 409         rfc2308-type1 <boolean>; // not yet implemented
 410         root-delegation-only [ exclude { <quoted_string>; ... } ];
 411         rrset-order { [ class <string> ] [ type <string> ] [ name
 412             <quoted_string> ] <string> <string>; ... };
 413         server <netprefix> {
 414                 bogus <boolean>;
 415                 edns <boolean>;
 416                 edns-udp-size <integer>;
 417                 keys <server_key>;
 418                 max-udp-size <integer>;
 419                 notify-source ( <ipv4_address> | * ) [ port ( <integer> | *
 420                     ) ];
 421                 notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer>
 422                     | * ) ];
 423                 provide-ixfr <boolean>;
 424                 query-source <querysource4>;
 425                 query-source-v6 <querysource6>;
 426                 request-ixfr <boolean>;
 427                 support-ixfr <boolean>; // obsolete
 428                 transfer-format ( many-answers | one-answer );
 429                 transfer-source ( <ipv4_address> | * ) [ port ( <integer> |
 430                     * ) ];
 431                 transfer-source-v6 ( <ipv6_address> | * ) [ port (
 432                     <integer> | * ) ];
 433                 transfers <integer>;
 434         };
 435         sig-signing-nodes <integer>;
 436         sig-signing-signatures <integer>;
 437         sig-signing-type <integer>;
 438         sig-validity-interval <integer> [ <integer> ];
 439         sortlist { <address_match_element>; ... };
 440         suppress-initial-notify <boolean>; // not yet implemented
 441         topology { <address_match_element>; ... }; // not implemented
 442         transfer-format ( many-answers | one-answer );
 443         transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
 444         transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ];
 445         trusted-keys { <string> <integer> <integer> <integer>
 446             <quoted_string>; ... };
 447         try-tcp-refresh <boolean>;
 448         update-check-ksk <boolean>;
 449         use-alt-transfer-source <boolean>;
 450         use-queryport-pool <boolean>; // obsolete
 451         zero-no-soa-ttl <boolean>;
 452         zero-no-soa-ttl-cache <boolean>;
 453         zone <string> <optional_class> {
 454                 allow-notify { <address_match_element>; ... };
 455                 allow-query { <address_match_element>; ... };
 456                 allow-query-on { <address_match_element>; ... };
 457                 allow-transfer { <address_match_element>; ... };
 458                 allow-update { <address_match_element>; ... };
 459                 allow-update-forwarding { <address_match_element>; ... };
 460                 also-notify [ port <integer> ] { ( <ipv4_address> |
 461                     <ipv6_address> ) [ port <integer> ]; ... };
 462                 alt-transfer-source ( <ipv4_address> | * ) [ port (
 463                     <integer> | * ) ];
 464                 alt-transfer-source-v6 ( <ipv6_address> | * ) [ port (
 465                     <integer> | * ) ];
 466                 auto-dnssec ( allow | maintain | off );
 467                 check-dup-records ( fail | warn | ignore );
 468                 check-integrity <boolean>;
 469                 check-mx ( fail | warn | ignore );
 470                 check-mx-cname ( fail | warn | ignore );
 471                 check-names ( fail | warn | ignore );
 472                 check-sibling <boolean>;
 473                 check-srv-cname ( fail | warn | ignore );
 474                 check-wildcard <boolean>;
 475                 database <string>;
 476                 delegation-only <boolean>;
 477                 dialup <dialuptype>;
 478                 dnssec-dnskey-kskonly <boolean>;
 479                 dnssec-secure-to-insecure <boolean>;
 480                 file <quoted_string>;
 481                 forward ( first | only );
 482                 forwarders [ port <integer> ] { ( <ipv4_address> |
 483                     <ipv6_address> ) [ port <integer> ]; ... };
 484                 ixfr-base <quoted_string>; // obsolete
 485                 ixfr-from-differences <boolean>;
 486                 ixfr-tmp-file <quoted_string>; // obsolete
 487                 journal <quoted_string>;
 488                 key-directory <quoted_string>;
 489                 maintain-ixfr-base <boolean>; // obsolete
 490                 masterfile-format ( text | raw );
 491                 masters [ port <integer> ] { ( <masters> | <ipv4_address> [
 492                     port <integer> ] | <ipv6_address> [ port <integer> ] )
 493                     [ key <string> ]; ... };
 494                 max-ixfr-log-size <size>; // obsolete
 495                 max-journal-size <size_no_default>;
 496                 max-refresh-time <integer>;
 497                 max-retry-time <integer>;
 498                 max-transfer-idle-in <integer>;
 499                 max-transfer-idle-out <integer>;
 500                 max-transfer-time-in <integer>;
 501                 max-transfer-time-out <integer>;
 502                 min-refresh-time <integer>;
 503                 min-retry-time <integer>;
 504                 multi-master <boolean>;
 505                 notify <notifytype>;
 506                 notify-delay <integer>;
 507                 notify-source ( <ipv4_address> | * ) [ port ( <integer> | *
 508                     ) ];
 509                 notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer>
 510                     | * ) ];
 511                 notify-to-soa <boolean>;
 512                 nsec3-test-zone <boolean>; // test only
 513                 pubkey <integer> <integer> <integer>
 514                     <quoted_string>; // obsolete
 515                 server-addresses { ( <ipv4_address> | <ipv6_address> ) [
 516                     port <integer> ]; ... };
 517                 server-names { <quoted_string>; ... };
 518                 sig-signing-nodes <integer>;
 519                 sig-signing-signatures <integer>;
 520                 sig-signing-type <integer>;
 521                 sig-validity-interval <integer> [ <integer> ];
 522                 transfer-source ( <ipv4_address> | * ) [ port ( <integer> |
 523                     * ) ];
 524                 transfer-source-v6 ( <ipv6_address> | * ) [ port (
 525                     <integer> | * ) ];
 526                 try-tcp-refresh <boolean>;
 527                 type ( master | slave | stub | static-stub | hint | forward
 528                     | delegation-only );
 529                 update-check-ksk <boolean>;
 530                 update-policy ( local | { ( grant | deny ) <string> ( name
 531                     | subdomain | wildcard | self | selfsub | selfwild |
 532                     krb5-self | ms-self | krb5-subdomain | ms-subdomain |
 533                     tcp-self | 6to4-self | zonesub | external ) [ <string>
 534                     ] <rrtypelist>; ... };
 535                 use-alt-transfer-source <boolean>;
 536                 zero-no-soa-ttl <boolean>;
 537                 zone-statistics <boolean>;
 538         };
 539         zone-statistics <boolean>;
 540 };
 541
 542 zone <string> <optional_class> {
 543         allow-notify { <address_match_element>; ... };
 544         allow-query { <address_match_element>; ... };
 545         allow-query-on { <address_match_element>; ... };
 546         allow-transfer { <address_match_element>; ... };
 547         allow-update { <address_match_element>; ... };
 548         allow-update-forwarding { <address_match_element>; ... };
 549         also-notify [ port <integer> ] { ( <ipv4_address> | <ipv6_address>
 550             ) [ port <integer> ]; ... };
 551         alt-transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
 552         alt-transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> |
 553             * ) ];
 554         auto-dnssec ( allow | maintain | off );
 555         check-dup-records ( fail | warn | ignore );
 556         check-integrity <boolean>;
 557         check-mx ( fail | warn | ignore );
 558         check-mx-cname ( fail | warn | ignore );
 559         check-names ( fail | warn | ignore );
 560         check-sibling <boolean>;
 561         check-srv-cname ( fail | warn | ignore );
 562         check-wildcard <boolean>;
 563         database <string>;
 564         delegation-only <boolean>;
 565         dialup <dialuptype>;
 566         dnssec-dnskey-kskonly <boolean>;
 567         dnssec-secure-to-insecure <boolean>;
 568         file <quoted_string>;
 569         forward ( first | only );
 570         forwarders [ port <integer> ] { ( <ipv4_address> | <ipv6_address> )
 571             [ port <integer> ]; ... };
 572         ixfr-base <quoted_string>; // obsolete
 573         ixfr-from-differences <boolean>;
 574         ixfr-tmp-file <quoted_string>; // obsolete
 575         journal <quoted_string>;
 576         key-directory <quoted_string>;
 577         maintain-ixfr-base <boolean>; // obsolete
 578         masterfile-format ( text | raw );
 579         masters [ port <integer> ] { ( <masters> | <ipv4_address> [ port
 580             <integer> ] | <ipv6_address> [ port <integer> ] ) [ key
 581             <string> ]; ... };
 582         max-ixfr-log-size <size>; // obsolete
 583         max-journal-size <size_no_default>;
 584         max-refresh-time <integer>;
 585         max-retry-time <integer>;
 586         max-transfer-idle-in <integer>;
 587         max-transfer-idle-out <integer>;
 588         max-transfer-time-in <integer>;
 589         max-transfer-time-out <integer>;
 590         min-refresh-time <integer>;
 591         min-retry-time <integer>;
 592         multi-master <boolean>;
 593         notify <notifytype>;
 594         notify-delay <integer>;
 595         notify-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
 596         notify-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ];
 597         notify-to-soa <boolean>;
 598         nsec3-test-zone <boolean>; // test only
 599         pubkey <integer> <integer> <integer> <quoted_string>; // obsolete
 600         server-addresses { ( <ipv4_address> | <ipv6_address> ) [ port
 601             <integer> ]; ... };
 602         server-names { <quoted_string>; ... };
 603         sig-signing-nodes <integer>;
 604         sig-signing-signatures <integer>;
 605         sig-signing-type <integer>;
 606         sig-validity-interval <integer> [ <integer> ];
 607         transfer-source ( <ipv4_address> | * ) [ port ( <integer> | * ) ];
 608         transfer-source-v6 ( <ipv6_address> | * ) [ port ( <integer> | * ) ];
 609         try-tcp-refresh <boolean>;
 610         type ( master | slave | stub | static-stub | hint | forward |
 611             delegation-only );
 612         update-check-ksk <boolean>;
 613         update-policy ( local | { ( grant | deny ) <string> ( name |
 614             subdomain | wildcard | self | selfsub | selfwild | krb5-self |
 615             ms-self | krb5-subdomain | ms-subdomain | tcp-self | 6to4-self
 616             | zonesub | external ) [ <string> ] <rrtypelist>; ... };
 617         use-alt-transfer-source <boolean>;
 618         zero-no-soa-ttl <boolean>;
 619         zone-statistics <boolean>;
 620 };
 621