contrib/bind9/doc/arm/man.named.conf.html

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  30 <tr><th colspan="3" align="center"><code class="filename">named.conf</code></th></tr>
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  41 <div class="refentry">
  42 <a name="man.named.conf"></a><div class="titlepage"></div>
  43 <div class="refnamediv">
  44 <h2>Name</h2>
  45 <p><code class="filename">named.conf</code> &#8212; configuration file for named</p>
  46 </div>
  47 <div class="refsynopsisdiv">
  48 <h2>Synopsis</h2>
  49 <div class="cmdsynopsis"><p><code class="command">named.conf</code> </p></div>
  50 </div>
  51 <div class="refsection">
  52 <a name="id-1.14.17.7"></a><h2>DESCRIPTION</h2>
  53 <p><code class="filename">named.conf</code> is the configuration file
  54       for
  55       <span class="command"><strong>named</strong></span>.  Statements are enclosed
  56       in braces and terminated with a semi-colon.  Clauses in
  57       the statements are also semi-colon terminated.  The usual
  58       comment styles are supported:
  59     </p>
  60 <p>
  61       C style: /* */
  62     </p>
  63 <p>
  64       C++ style: // to end of line
  65     </p>
  66 <p>
  67       Unix style: # to end of line
  68     </p>
  69 </div>
  70 <div class="refsection">
  71 <a name="id-1.14.17.8"></a><h2>ACL</h2>
  72 <div class="literallayout"><p><br>
  73 acl <em class="replaceable"><code>string</code></em> { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
  74 <br>
  75 </p></div>
  76 </div>
  77 <div class="refsection">
  78 <a name="id-1.14.17.9"></a><h2>KEY</h2>
  79 <div class="literallayout"><p><br>
  80 key <em class="replaceable"><code>domain_name</code></em> {<br>
  81         algorithm <em class="replaceable"><code>string</code></em>;<br>
  82         secret <em class="replaceable"><code>string</code></em>;<br>
  83 };<br>
  84 </p></div>
  85 </div>
  86 <div class="refsection">
  87 <a name="id-1.14.17.10"></a><h2>MASTERS</h2>
  88 <div class="literallayout"><p><br>
  89 masters <em class="replaceable"><code>string</code></em> [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] {<br>
  90         ( <em class="replaceable"><code>masters</code></em> | <em class="replaceable"><code>ipv4_address</code></em> [<span class="optional">port <em class="replaceable"><code>integer</code></em></span>] |<br>
  91         <em class="replaceable"><code>ipv6_address</code></em> [<span class="optional">port <em class="replaceable"><code>integer</code></em></span>] ) [<span class="optional"> key <em class="replaceable"><code>string</code></em> </span>]; ...<br>
  92 };<br>
  93 </p></div>
  94 </div>
  95 <div class="refsection">
  96 <a name="id-1.14.17.11"></a><h2>SERVER</h2>
  97 <div class="literallayout"><p><br>
  98 server ( <em class="replaceable"><code>ipv4_address[<span class="optional">/prefixlen</span>]</code></em> | <em class="replaceable"><code>ipv6_address[<span class="optional">/prefixlen</span>]</code></em> ) {<br>
  99         bogus <em class="replaceable"><code>boolean</code></em>;<br>
 100         edns <em class="replaceable"><code>boolean</code></em>;<br>
 101         edns-udp-size <em class="replaceable"><code>integer</code></em>;<br>
 102         max-udp-size <em class="replaceable"><code>integer</code></em>;<br>
 103         provide-ixfr <em class="replaceable"><code>boolean</code></em>;<br>
 104         request-ixfr <em class="replaceable"><code>boolean</code></em>;<br>
 105         keys <em class="replaceable"><code>server_key</code></em>;<br>
 106         transfers <em class="replaceable"><code>integer</code></em>;<br>
 107         transfer-format ( many-answers | one-answer );<br>
 108         transfer-source ( <em class="replaceable"><code>ipv4_address</code></em> | * )<br>
 109                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 110         transfer-source-v6 ( <em class="replaceable"><code>ipv6_address</code></em> | * )<br>
 111                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 112 <br>
 113         support-ixfr <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 114 };<br>
 115 </p></div>
 116 </div>
 117 <div class="refsection">
 118 <a name="id-1.14.17.12"></a><h2>TRUSTED-KEYS</h2>
 119 <div class="literallayout"><p><br>
 120 trusted-keys {<br>
 121         <em class="replaceable"><code>domain_name</code></em> <em class="replaceable"><code>flags</code></em> <em class="replaceable"><code>protocol</code></em> <em class="replaceable"><code>algorithm</code></em> <em class="replaceable"><code>key</code></em>; ...<br>
 122 };<br>
 123 </p></div>
 124 </div>
 125 <div class="refsection">
 126 <a name="id-1.14.17.13"></a><h2>MANAGED-KEYS</h2>
 127 <div class="literallayout"><p><br>
 128 managed-keys {<br>
 129         <em class="replaceable"><code>domain_name</code></em> <code class="constant">initial-key</code> <em class="replaceable"><code>flags</code></em> <em class="replaceable"><code>protocol</code></em> <em class="replaceable"><code>algorithm</code></em> <em class="replaceable"><code>key</code></em>; ...<br>
 130 };<br>
 131 </p></div>
 132 </div>
 133 <div class="refsection">
 134 <a name="id-1.14.17.14"></a><h2>CONTROLS</h2>
 135 <div class="literallayout"><p><br>
 136 controls {<br>
 137         inet ( <em class="replaceable"><code>ipv4_address</code></em> | <em class="replaceable"><code>ipv6_address</code></em> | * )<br>
 138                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>]<br>
 139                 allow { <em class="replaceable"><code>address_match_element</code></em>; ... }<br>
 140                 [<span class="optional"> keys { <em class="replaceable"><code>string</code></em>; ... } </span>];<br>
 141         unix <em class="replaceable"><code>unsupported</code></em>; // not implemented<br>
 142 };<br>
 143 </p></div>
 144 </div>
 145 <div class="refsection">
 146 <a name="id-1.14.17.15"></a><h2>LOGGING</h2>
 147 <div class="literallayout"><p><br>
 148 logging {<br>
 149         channel <em class="replaceable"><code>string</code></em> {<br>
 150                 file <em class="replaceable"><code>log_file</code></em>;<br>
 151                 syslog <em class="replaceable"><code>optional_facility</code></em>;<br>
 152                 null;<br>
 153                 stderr;<br>
 154                 severity <em class="replaceable"><code>log_severity</code></em>;<br>
 155                 print-time <em class="replaceable"><code>boolean</code></em>;<br>
 156                 print-severity <em class="replaceable"><code>boolean</code></em>;<br>
 157                 print-category <em class="replaceable"><code>boolean</code></em>;<br>
 158         };<br>
 159         category <em class="replaceable"><code>string</code></em> { <em class="replaceable"><code>string</code></em>; ... };<br>
 160 };<br>
 161 </p></div>
 162 </div>
 163 <div class="refsection">
 164 <a name="id-1.14.17.16"></a><h2>LWRES</h2>
 165 <div class="literallayout"><p><br>
 166 lwres {<br>
 167         listen-on [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] {<br>
 168                 ( <em class="replaceable"><code>ipv4_address</code></em> | <em class="replaceable"><code>ipv6_address</code></em> ) [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>]; ...<br>
 169         };<br>
 170         view <em class="replaceable"><code>string</code></em> <em class="replaceable"><code>optional_class</code></em>;<br>
 171         search { <em class="replaceable"><code>string</code></em>; ... };<br>
 172         ndots <em class="replaceable"><code>integer</code></em>;<br>
 173 };<br>
 174 </p></div>
 175 </div>
 176 <div class="refsection">
 177 <a name="id-1.14.17.17"></a><h2>OPTIONS</h2>
 178 <div class="literallayout"><p><br>
 179 options {<br>
 180         avoid-v4-udp-ports { <em class="replaceable"><code>port</code></em>; ... };<br>
 181         avoid-v6-udp-ports { <em class="replaceable"><code>port</code></em>; ... };<br>
 182         blackhole { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 183         coresize <em class="replaceable"><code>size</code></em>;<br>
 184         datasize <em class="replaceable"><code>size</code></em>;<br>
 185         directory <em class="replaceable"><code>quoted_string</code></em>;<br>
 186         dump-file <em class="replaceable"><code>quoted_string</code></em>;<br>
 187         files <em class="replaceable"><code>size</code></em>;<br>
 188         heartbeat-interval <em class="replaceable"><code>integer</code></em>;<br>
 189         host-statistics <em class="replaceable"><code>boolean</code></em>; // not implemented<br>
 190         host-statistics-max <em class="replaceable"><code>number</code></em>; // not implemented<br>
 191         hostname ( <em class="replaceable"><code>quoted_string</code></em> | none );<br>
 192         interface-interval <em class="replaceable"><code>integer</code></em>;<br>
 193         listen-on [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 194         listen-on-v6 [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 195         match-mapped-addresses <em class="replaceable"><code>boolean</code></em>;<br>
 196         memstatistics-file <em class="replaceable"><code>quoted_string</code></em>;<br>
 197         pid-file ( <em class="replaceable"><code>quoted_string</code></em> | none );<br>
 198         port <em class="replaceable"><code>integer</code></em>;<br>
 199         querylog <em class="replaceable"><code>boolean</code></em>;<br>
 200         recursing-file <em class="replaceable"><code>quoted_string</code></em>;<br>
 201         reserved-sockets <em class="replaceable"><code>integer</code></em>;<br>
 202         random-device <em class="replaceable"><code>quoted_string</code></em>;<br>
 203         recursive-clients <em class="replaceable"><code>integer</code></em>;<br>
 204         serial-query-rate <em class="replaceable"><code>integer</code></em>;<br>
 205         server-id ( <em class="replaceable"><code>quoted_string</code></em> | hostname | none );<br>
 206         stacksize <em class="replaceable"><code>size</code></em>;<br>
 207         statistics-file <em class="replaceable"><code>quoted_string</code></em>;<br>
 208         statistics-interval <em class="replaceable"><code>integer</code></em>; // not yet implemented<br>
 209         tcp-clients <em class="replaceable"><code>integer</code></em>;<br>
 210         tcp-listen-queue <em class="replaceable"><code>integer</code></em>;<br>
 211         tkey-dhkey <em class="replaceable"><code>quoted_string</code></em> <em class="replaceable"><code>integer</code></em>;<br>
 212         tkey-gssapi-credential <em class="replaceable"><code>quoted_string</code></em>;<br>
 213         tkey-gssapi-keytab <em class="replaceable"><code>quoted_string</code></em>;<br>
 214         tkey-domain <em class="replaceable"><code>quoted_string</code></em>;<br>
 215         transfers-per-ns <em class="replaceable"><code>integer</code></em>;<br>
 216         transfers-in <em class="replaceable"><code>integer</code></em>;<br>
 217         transfers-out <em class="replaceable"><code>integer</code></em>;<br>
 218         version ( <em class="replaceable"><code>quoted_string</code></em> | none );<br>
 219         allow-recursion { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 220         allow-recursion-on { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 221         sortlist { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 222         topology { <em class="replaceable"><code>address_match_element</code></em>; ... }; // not implemented<br>
 223         auth-nxdomain <em class="replaceable"><code>boolean</code></em>; // default changed<br>
 224         minimal-responses <em class="replaceable"><code>boolean</code></em>;<br>
 225         recursion <em class="replaceable"><code>boolean</code></em>;<br>
 226         rrset-order {<br>
 227                 [<span class="optional"> class <em class="replaceable"><code>string</code></em> </span>] [<span class="optional"> type <em class="replaceable"><code>string</code></em> </span>]<br>
 228                 [<span class="optional"> name <em class="replaceable"><code>quoted_string</code></em> </span>] <em class="replaceable"><code>string</code></em> <em class="replaceable"><code>string</code></em>; ...<br>
 229         };<br>
 230         provide-ixfr <em class="replaceable"><code>boolean</code></em>;<br>
 231         request-ixfr <em class="replaceable"><code>boolean</code></em>;<br>
 232         rfc2308-type1 <em class="replaceable"><code>boolean</code></em>; // not yet implemented<br>
 233         additional-from-auth <em class="replaceable"><code>boolean</code></em>;<br>
 234         additional-from-cache <em class="replaceable"><code>boolean</code></em>;<br>
 235         query-source ( ( <em class="replaceable"><code>ipv4_address</code></em> | * ) | [<span class="optional"> address ( <em class="replaceable"><code>ipv4_address</code></em> | * ) </span>] ) [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 236         query-source-v6 ( ( <em class="replaceable"><code>ipv6_address</code></em> | * ) | [<span class="optional"> address ( <em class="replaceable"><code>ipv6_address</code></em> | * ) </span>] ) [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 237         use-queryport-pool <em class="replaceable"><code>boolean</code></em>;<br>
 238         queryport-pool-ports <em class="replaceable"><code>integer</code></em>;<br>
 239         queryport-pool-updateinterval <em class="replaceable"><code>integer</code></em>;<br>
 240         cleaning-interval <em class="replaceable"><code>integer</code></em>;<br>
 241         resolver-query-timeout <em class="replaceable"><code>integer</code></em>;<br>
 242         min-roots <em class="replaceable"><code>integer</code></em>; // not implemented<br>
 243         lame-ttl <em class="replaceable"><code>integer</code></em>;<br>
 244         max-ncache-ttl <em class="replaceable"><code>integer</code></em>;<br>
 245         max-cache-ttl <em class="replaceable"><code>integer</code></em>;<br>
 246         transfer-format ( many-answers | one-answer );<br>
 247         max-cache-size <em class="replaceable"><code>size</code></em>;<br>
 248         max-acache-size <em class="replaceable"><code>size</code></em>;<br>
 249         clients-per-query <em class="replaceable"><code>number</code></em>;<br>
 250         max-clients-per-query <em class="replaceable"><code>number</code></em>;<br>
 251         check-names ( master | slave | response )<br>
 252                 ( fail | warn | ignore );<br>
 253         check-mx ( fail | warn | ignore );<br>
 254         check-integrity <em class="replaceable"><code>boolean</code></em>;<br>
 255         check-mx-cname ( fail | warn | ignore );<br>
 256         check-srv-cname ( fail | warn | ignore );<br>
 257         cache-file <em class="replaceable"><code>quoted_string</code></em>; // test option<br>
 258         suppress-initial-notify <em class="replaceable"><code>boolean</code></em>; // not yet implemented<br>
 259         preferred-glue <em class="replaceable"><code>string</code></em>;<br>
 260         dual-stack-servers [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] {<br>
 261                 ( <em class="replaceable"><code>quoted_string</code></em> [<span class="optional">port <em class="replaceable"><code>integer</code></em></span>] |<br>
 262                 <em class="replaceable"><code>ipv4_address</code></em> [<span class="optional">port <em class="replaceable"><code>integer</code></em></span>] |<br>
 263                 <em class="replaceable"><code>ipv6_address</code></em> [<span class="optional">port <em class="replaceable"><code>integer</code></em></span>] ); ...<br>
 264         };<br>
 265         edns-udp-size <em class="replaceable"><code>integer</code></em>;<br>
 266         max-udp-size <em class="replaceable"><code>integer</code></em>;<br>
 267         root-delegation-only [<span class="optional"> exclude { <em class="replaceable"><code>quoted_string</code></em>; ... } </span>];<br>
 268         disable-algorithms <em class="replaceable"><code>string</code></em> { <em class="replaceable"><code>string</code></em>; ... };<br>
 269         dnssec-enable <em class="replaceable"><code>boolean</code></em>;<br>
 270         dnssec-validation <em class="replaceable"><code>boolean</code></em>;<br>
 271         dnssec-lookaside ( <em class="replaceable"><code>auto</code></em> | <em class="replaceable"><code>no</code></em> | <em class="replaceable"><code>domain</code></em> trust-anchor <em class="replaceable"><code>domain</code></em> );<br>
 272         dnssec-must-be-secure <em class="replaceable"><code>string</code></em> <em class="replaceable"><code>boolean</code></em>;<br>
 273         dnssec-accept-expired <em class="replaceable"><code>boolean</code></em>;<br>
 274 <br>
 275         dns64-server <em class="replaceable"><code>string</code></em>;<br>
 276         dns64-contact <em class="replaceable"><code>string</code></em>;<br>
 277         dns64 <em class="replaceable"><code>prefix</code></em> {<br>
 278                 clients { <span style="color: red">&lt;replacable&gt;acl&lt;/replacable&gt;</span>; };<br>
 279                 exclude { <span style="color: red">&lt;replacable&gt;acl&lt;/replacable&gt;</span>; };<br>
 280                 mapped { <span style="color: red">&lt;replacable&gt;acl&lt;/replacable&gt;</span>; };<br>
 281                 break-dnssec <em class="replaceable"><code>boolean</code></em>;<br>
 282                 recursive-only <em class="replaceable"><code>boolean</code></em>;<br>
 283                 suffix <em class="replaceable"><code>ipv6_address</code></em>;<br>
 284         };<br>
 285 <br>
 286         empty-server <em class="replaceable"><code>string</code></em>;<br>
 287         empty-contact <em class="replaceable"><code>string</code></em>;<br>
 288         empty-zones-enable <em class="replaceable"><code>boolean</code></em>;<br>
 289         disable-empty-zone <em class="replaceable"><code>string</code></em>;<br>
 290 <br>
 291         dialup <em class="replaceable"><code>dialuptype</code></em>;<br>
 292         ixfr-from-differences <em class="replaceable"><code>ixfrdiff</code></em>;<br>
 293 <br>
 294         allow-query { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 295         allow-query-on { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 296         allow-query-cache { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 297         allow-query-cache-on { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 298         allow-transfer { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 299         allow-update { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 300         allow-update-forwarding { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 301         update-check-ksk <em class="replaceable"><code>boolean</code></em>;<br>
 302         dnssec-dnskey-kskonly <em class="replaceable"><code>boolean</code></em>;<br>
 303 <br>
 304         masterfile-format ( text | raw );<br>
 305         notify <em class="replaceable"><code>notifytype</code></em>;<br>
 306         notify-source ( <em class="replaceable"><code>ipv4_address</code></em> | * ) [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 307         notify-source-v6 ( <em class="replaceable"><code>ipv6_address</code></em> | * ) [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 308         notify-delay <em class="replaceable"><code>seconds</code></em>;<br>
 309         notify-to-soa <em class="replaceable"><code>boolean</code></em>;<br>
 310         also-notify [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] { ( <em class="replaceable"><code>ipv4_address</code></em> | <em class="replaceable"><code>ipv6_address</code></em> )<br>
 311                 [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>]; ...<br>
 312                 [<span class="optional"> key <em class="replaceable"><code>keyname</code></em> </span>] ... };<br>
 313         allow-notify { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 314 <br>
 315         forward ( first | only );<br>
 316         forwarders [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] {<br>
 317                 ( <em class="replaceable"><code>ipv4_address</code></em> | <em class="replaceable"><code>ipv6_address</code></em> ) [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>]; ...<br>
 318         };<br>
 319 <br>
 320         max-journal-size <em class="replaceable"><code>size_no_default</code></em>;<br>
 321         max-transfer-time-in <em class="replaceable"><code>integer</code></em>;<br>
 322         max-transfer-time-out <em class="replaceable"><code>integer</code></em>;<br>
 323         max-transfer-idle-in <em class="replaceable"><code>integer</code></em>;<br>
 324         max-transfer-idle-out <em class="replaceable"><code>integer</code></em>;<br>
 325         max-retry-time <em class="replaceable"><code>integer</code></em>;<br>
 326         min-retry-time <em class="replaceable"><code>integer</code></em>;<br>
 327         max-refresh-time <em class="replaceable"><code>integer</code></em>;<br>
 328         min-refresh-time <em class="replaceable"><code>integer</code></em>;<br>
 329         multi-master <em class="replaceable"><code>boolean</code></em>;<br>
 330 <br>
 331         sig-validity-interval <em class="replaceable"><code>integer</code></em>;<br>
 332         sig-re-signing-interval <em class="replaceable"><code>integer</code></em>;<br>
 333         sig-signing-nodes <em class="replaceable"><code>integer</code></em>;<br>
 334         sig-signing-signatures <em class="replaceable"><code>integer</code></em>;<br>
 335         sig-signing-type <em class="replaceable"><code>integer</code></em>;<br>
 336 <br>
 337         transfer-source ( <em class="replaceable"><code>ipv4_address</code></em> | * )<br>
 338                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 339         transfer-source-v6 ( <em class="replaceable"><code>ipv6_address</code></em> | * )<br>
 340                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 341 <br>
 342         alt-transfer-source ( <em class="replaceable"><code>ipv4_address</code></em> | * )<br>
 343                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 344         alt-transfer-source-v6 ( <em class="replaceable"><code>ipv6_address</code></em> | * )<br>
 345                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 346         use-alt-transfer-source <em class="replaceable"><code>boolean</code></em>;<br>
 347 <br>
 348         zone-statistics <em class="replaceable"><code>boolean</code></em>;<br>
 349         key-directory <em class="replaceable"><code>quoted_string</code></em>;<br>
 350         managed-keys-directory <em class="replaceable"><code>quoted_string</code></em>;<br>
 351         auto-dnssec <code class="constant">allow</code>|<code class="constant">maintain</code>|<code class="constant">off</code>;<br>
 352         try-tcp-refresh <em class="replaceable"><code>boolean</code></em>;<br>
 353         zero-no-soa-ttl <em class="replaceable"><code>boolean</code></em>;<br>
 354         zero-no-soa-ttl-cache <em class="replaceable"><code>boolean</code></em>;<br>
 355         dnssec-secure-to-insecure <em class="replaceable"><code>boolean</code></em>;<br>
 356         deny-answer-addresses {<br>
 357                 <em class="replaceable"><code>address_match_list</code></em><br>
 358         } [<span class="optional"> except-from { <em class="replaceable"><code>namelist</code></em> } </span>];<br>
 359         deny-answer-aliases {<br>
 360                 <em class="replaceable"><code>namelist</code></em><br>
 361         } [<span class="optional"> except-from { <em class="replaceable"><code>namelist</code></em> } </span>];<br>
 362 <br>
 363         nsec3-test-zone <em class="replaceable"><code>boolean</code></em>;  // testing only<br>
 364 <br>
 365         allow-v6-synthesis { <em class="replaceable"><code>address_match_element</code></em>; ... }; // obsolete<br>
 366         deallocate-on-exit <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 367         fake-iquery <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 368         fetch-glue <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 369         has-old-clients <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 370         maintain-ixfr-base <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 371         max-ixfr-log-size <em class="replaceable"><code>size</code></em>; // obsolete<br>
 372         multiple-cnames <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 373         named-xfer <em class="replaceable"><code>quoted_string</code></em>; // obsolete<br>
 374         serial-queries <em class="replaceable"><code>integer</code></em>; // obsolete<br>
 375         treat-cr-as-space <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 376         use-id-pool <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 377         use-ixfr <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 378 };<br>
 379 </p></div>
 380 </div>
 381 <div class="refsection">
 382 <a name="id-1.14.17.18"></a><h2>VIEW</h2>
 383 <div class="literallayout"><p><br>
 384 view <em class="replaceable"><code>string</code></em> <em class="replaceable"><code>optional_class</code></em> {<br>
 385         match-clients { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 386         match-destinations { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 387         match-recursive-only <em class="replaceable"><code>boolean</code></em>;<br>
 388 <br>
 389         key <em class="replaceable"><code>string</code></em> {<br>
 390                 algorithm <em class="replaceable"><code>string</code></em>;<br>
 391                 secret <em class="replaceable"><code>string</code></em>;<br>
 392         };<br>
 393 <br>
 394         zone <em class="replaceable"><code>string</code></em> <em class="replaceable"><code>optional_class</code></em> {<br>
 395                 ...<br>
 396         };<br>
 397 <br>
 398         server ( <em class="replaceable"><code>ipv4_address[<span class="optional">/prefixlen</span>]</code></em> | <em class="replaceable"><code>ipv6_address[<span class="optional">/prefixlen</span>]</code></em> ) {<br>
 399                 ...<br>
 400         };<br>
 401 <br>
 402         trusted-keys {<br>
 403                 <em class="replaceable"><code>string</code></em> <em class="replaceable"><code>integer</code></em> <em class="replaceable"><code>integer</code></em> <em class="replaceable"><code>integer</code></em> <em class="replaceable"><code>quoted_string</code></em>;<br>
 404                 [<span class="optional">...</span>]<br>
 405         };<br>
 406 <br>
 407         allow-recursion { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 408         allow-recursion-on { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 409         sortlist { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 410         topology { <em class="replaceable"><code>address_match_element</code></em>; ... }; // not implemented<br>
 411         auth-nxdomain <em class="replaceable"><code>boolean</code></em>; // default changed<br>
 412         minimal-responses <em class="replaceable"><code>boolean</code></em>;<br>
 413         recursion <em class="replaceable"><code>boolean</code></em>;<br>
 414         rrset-order {<br>
 415                 [<span class="optional"> class <em class="replaceable"><code>string</code></em> </span>] [<span class="optional"> type <em class="replaceable"><code>string</code></em> </span>]<br>
 416                 [<span class="optional"> name <em class="replaceable"><code>quoted_string</code></em> </span>] <em class="replaceable"><code>string</code></em> <em class="replaceable"><code>string</code></em>; ...<br>
 417         };<br>
 418         provide-ixfr <em class="replaceable"><code>boolean</code></em>;<br>
 419         request-ixfr <em class="replaceable"><code>boolean</code></em>;<br>
 420         rfc2308-type1 <em class="replaceable"><code>boolean</code></em>; // not yet implemented<br>
 421         additional-from-auth <em class="replaceable"><code>boolean</code></em>;<br>
 422         additional-from-cache <em class="replaceable"><code>boolean</code></em>;<br>
 423         query-source ( ( <em class="replaceable"><code>ipv4_address</code></em> | * ) | [<span class="optional"> address ( <em class="replaceable"><code>ipv4_address</code></em> | * ) </span>] ) [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 424         query-source-v6 ( ( <em class="replaceable"><code>ipv6_address</code></em> | * ) | [<span class="optional"> address ( <em class="replaceable"><code>ipv6_address</code></em> | * ) </span>] ) [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 425         use-queryport-pool <em class="replaceable"><code>boolean</code></em>;<br>
 426         queryport-pool-ports <em class="replaceable"><code>integer</code></em>;<br>
 427         queryport-pool-updateinterval <em class="replaceable"><code>integer</code></em>;<br>
 428         cleaning-interval <em class="replaceable"><code>integer</code></em>;<br>
 429         resolver-query-timeout <em class="replaceable"><code>integer</code></em>;<br>
 430         min-roots <em class="replaceable"><code>integer</code></em>; // not implemented<br>
 431         lame-ttl <em class="replaceable"><code>integer</code></em>;<br>
 432         max-ncache-ttl <em class="replaceable"><code>integer</code></em>;<br>
 433         max-cache-ttl <em class="replaceable"><code>integer</code></em>;<br>
 434         transfer-format ( many-answers | one-answer );<br>
 435         max-cache-size <em class="replaceable"><code>size</code></em>;<br>
 436         max-acache-size <em class="replaceable"><code>size</code></em>;<br>
 437         clients-per-query <em class="replaceable"><code>number</code></em>;<br>
 438         max-clients-per-query <em class="replaceable"><code>number</code></em>;<br>
 439         check-names ( master | slave | response )<br>
 440                 ( fail | warn | ignore );<br>
 441         check-mx ( fail | warn | ignore );<br>
 442         check-integrity <em class="replaceable"><code>boolean</code></em>;<br>
 443         check-mx-cname ( fail | warn | ignore );<br>
 444         check-srv-cname ( fail | warn | ignore );<br>
 445         cache-file <em class="replaceable"><code>quoted_string</code></em>; // test option<br>
 446         suppress-initial-notify <em class="replaceable"><code>boolean</code></em>; // not yet implemented<br>
 447         preferred-glue <em class="replaceable"><code>string</code></em>;<br>
 448         dual-stack-servers [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] {<br>
 449                 ( <em class="replaceable"><code>quoted_string</code></em> [<span class="optional">port <em class="replaceable"><code>integer</code></em></span>] |<br>
 450                 <em class="replaceable"><code>ipv4_address</code></em> [<span class="optional">port <em class="replaceable"><code>integer</code></em></span>] |<br>
 451                 <em class="replaceable"><code>ipv6_address</code></em> [<span class="optional">port <em class="replaceable"><code>integer</code></em></span>] ); ...<br>
 452         };<br>
 453         edns-udp-size <em class="replaceable"><code>integer</code></em>;<br>
 454         max-udp-size <em class="replaceable"><code>integer</code></em>;<br>
 455         root-delegation-only [<span class="optional"> exclude { <em class="replaceable"><code>quoted_string</code></em>; ... } </span>];<br>
 456         disable-algorithms <em class="replaceable"><code>string</code></em> { <em class="replaceable"><code>string</code></em>; ... };<br>
 457         dnssec-enable <em class="replaceable"><code>boolean</code></em>;<br>
 458         dnssec-validation <em class="replaceable"><code>boolean</code></em>;<br>
 459         dnssec-lookaside ( <em class="replaceable"><code>auto</code></em> | <em class="replaceable"><code>no</code></em> | <em class="replaceable"><code>domain</code></em> trust-anchor <em class="replaceable"><code>domain</code></em> );<br>
 460         dnssec-must-be-secure <em class="replaceable"><code>string</code></em> <em class="replaceable"><code>boolean</code></em>;<br>
 461         dnssec-accept-expired <em class="replaceable"><code>boolean</code></em>;<br>
 462 <br>
 463         dns64-server <em class="replaceable"><code>string</code></em>;<br>
 464         dns64-contact <em class="replaceable"><code>string</code></em>;<br>
 465         dns64 <em class="replaceable"><code>prefix</code></em> {<br>
 466                 clients { <span style="color: red">&lt;replacable&gt;acl&lt;/replacable&gt;</span>; };<br>
 467                 exclude { <span style="color: red">&lt;replacable&gt;acl&lt;/replacable&gt;</span>; };<br>
 468                 mapped { <span style="color: red">&lt;replacable&gt;acl&lt;/replacable&gt;</span>; };<br>
 469                 break-dnssec <em class="replaceable"><code>boolean</code></em>;<br>
 470                 recursive-only <em class="replaceable"><code>boolean</code></em>;<br>
 471                 suffix <em class="replaceable"><code>ipv6_address</code></em>;<br>
 472         };<br>
 473 <br>
 474         empty-server <em class="replaceable"><code>string</code></em>;<br>
 475         empty-contact <em class="replaceable"><code>string</code></em>;<br>
 476         empty-zones-enable <em class="replaceable"><code>boolean</code></em>;<br>
 477         disable-empty-zone <em class="replaceable"><code>string</code></em>;<br>
 478 <br>
 479         dialup <em class="replaceable"><code>dialuptype</code></em>;<br>
 480         ixfr-from-differences <em class="replaceable"><code>ixfrdiff</code></em>;<br>
 481 <br>
 482         allow-query { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 483         allow-query-on { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 484         allow-query-cache { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 485         allow-query-cache-on { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 486         allow-transfer { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 487         allow-update { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 488         allow-update-forwarding { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 489         update-check-ksk <em class="replaceable"><code>boolean</code></em>;<br>
 490         dnssec-dnskey-kskonly <em class="replaceable"><code>boolean</code></em>;<br>
 491 <br>
 492         masterfile-format ( text | raw );<br>
 493         notify <em class="replaceable"><code>notifytype</code></em>;<br>
 494         notify-source ( <em class="replaceable"><code>ipv4_address</code></em> | * ) [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 495         notify-source-v6 ( <em class="replaceable"><code>ipv6_address</code></em> | * ) [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 496         notify-delay <em class="replaceable"><code>seconds</code></em>;<br>
 497         notify-to-soa <em class="replaceable"><code>boolean</code></em>;<br>
 498         also-notify [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] { ( <em class="replaceable"><code>ipv4_address</code></em> | <em class="replaceable"><code>ipv6_address</code></em> )<br>
 499                 [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>]; ...<br>
 500                 [<span class="optional"> key <em class="replaceable"><code>keyname</code></em> </span>] ... };<br>
 501         allow-notify { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 502 <br>
 503         forward ( first | only );<br>
 504         forwarders [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] {<br>
 505                 ( <em class="replaceable"><code>ipv4_address</code></em> | <em class="replaceable"><code>ipv6_address</code></em> ) [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>]; ...<br>
 506         };<br>
 507 <br>
 508         max-journal-size <em class="replaceable"><code>size_no_default</code></em>;<br>
 509         max-transfer-time-in <em class="replaceable"><code>integer</code></em>;<br>
 510         max-transfer-time-out <em class="replaceable"><code>integer</code></em>;<br>
 511         max-transfer-idle-in <em class="replaceable"><code>integer</code></em>;<br>
 512         max-transfer-idle-out <em class="replaceable"><code>integer</code></em>;<br>
 513         max-retry-time <em class="replaceable"><code>integer</code></em>;<br>
 514         min-retry-time <em class="replaceable"><code>integer</code></em>;<br>
 515         max-refresh-time <em class="replaceable"><code>integer</code></em>;<br>
 516         min-refresh-time <em class="replaceable"><code>integer</code></em>;<br>
 517         multi-master <em class="replaceable"><code>boolean</code></em>;<br>
 518         sig-validity-interval <em class="replaceable"><code>integer</code></em>;<br>
 519 <br>
 520         transfer-source ( <em class="replaceable"><code>ipv4_address</code></em> | * )<br>
 521                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 522         transfer-source-v6 ( <em class="replaceable"><code>ipv6_address</code></em> | * )<br>
 523                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 524 <br>
 525         alt-transfer-source ( <em class="replaceable"><code>ipv4_address</code></em> | * )<br>
 526                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 527         alt-transfer-source-v6 ( <em class="replaceable"><code>ipv6_address</code></em> | * )<br>
 528                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 529         use-alt-transfer-source <em class="replaceable"><code>boolean</code></em>;<br>
 530 <br>
 531         zone-statistics <em class="replaceable"><code>boolean</code></em>;<br>
 532         try-tcp-refresh <em class="replaceable"><code>boolean</code></em>;<br>
 533         key-directory <em class="replaceable"><code>quoted_string</code></em>;<br>
 534         zero-no-soa-ttl <em class="replaceable"><code>boolean</code></em>;<br>
 535         zero-no-soa-ttl-cache <em class="replaceable"><code>boolean</code></em>;<br>
 536         dnssec-secure-to-insecure <em class="replaceable"><code>boolean</code></em>;<br>
 537 <br>
 538         allow-v6-synthesis { <em class="replaceable"><code>address_match_element</code></em>; ... }; // obsolete<br>
 539         fetch-glue <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 540         maintain-ixfr-base <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 541         max-ixfr-log-size <em class="replaceable"><code>size</code></em>; // obsolete<br>
 542 };<br>
 543 </p></div>
 544 </div>
 545 <div class="refsection">
 546 <a name="id-1.14.17.19"></a><h2>ZONE</h2>
 547 <div class="literallayout"><p><br>
 548 zone <em class="replaceable"><code>string</code></em> <em class="replaceable"><code>optional_class</code></em> {<br>
 549         type ( master | slave | stub | hint | redirect |<br>
 550                 forward | delegation-only );<br>
 551         file <em class="replaceable"><code>quoted_string</code></em>;<br>
 552 <br>
 553         masters [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] {<br>
 554                 ( <em class="replaceable"><code>masters</code></em> |<br>
 555                 <em class="replaceable"><code>ipv4_address</code></em> [<span class="optional">port <em class="replaceable"><code>integer</code></em></span>] |<br>
 556                 <em class="replaceable"><code>ipv6_address</code></em> [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] ) [<span class="optional"> key <em class="replaceable"><code>string</code></em> </span>]; ...<br>
 557         };<br>
 558 <br>
 559         database <em class="replaceable"><code>string</code></em>;<br>
 560         delegation-only <em class="replaceable"><code>boolean</code></em>;<br>
 561         check-names ( fail | warn | ignore );<br>
 562         check-mx ( fail | warn | ignore );<br>
 563         check-integrity <em class="replaceable"><code>boolean</code></em>;<br>
 564         check-mx-cname ( fail | warn | ignore );<br>
 565         check-srv-cname ( fail | warn | ignore );<br>
 566         dialup <em class="replaceable"><code>dialuptype</code></em>;<br>
 567         ixfr-from-differences <em class="replaceable"><code>boolean</code></em>;<br>
 568         journal <em class="replaceable"><code>quoted_string</code></em>;<br>
 569         zero-no-soa-ttl <em class="replaceable"><code>boolean</code></em>;<br>
 570         dnssec-secure-to-insecure <em class="replaceable"><code>boolean</code></em>;<br>
 571 <br>
 572         allow-query { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 573         allow-query-on { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 574         allow-transfer { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 575         allow-update { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 576         allow-update-forwarding { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 577         update-policy <em class="replaceable"><code>local</code></em> | <em class="replaceable"><code> {<br>
 578                 ( grant | deny ) <em class="replaceable"><code>string</code></em><br>
 579                 ( name | subdomain | wildcard | self | selfsub | selfwild |<br>
 580                   krb5-self | ms-self | krb5-subdomain | ms-subdomain |<br>
 581                   tcp-self | zonesub | 6to4-self ) <em class="replaceable"><code>string</code></em><br>
 582                 <em class="replaceable"><code>rrtypelist</code></em>;<br>
 583                 [<span class="optional">...</span>]<br>
 584         }</code></em>;<br>
 585         update-check-ksk <em class="replaceable"><code>boolean</code></em>;<br>
 586         dnssec-dnskey-kskonly <em class="replaceable"><code>boolean</code></em>;<br>
 587 <br>
 588         masterfile-format ( text | raw );<br>
 589         notify <em class="replaceable"><code>notifytype</code></em>;<br>
 590         notify-source ( <em class="replaceable"><code>ipv4_address</code></em> | * ) [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 591         notify-source-v6 ( <em class="replaceable"><code>ipv6_address</code></em> | * ) [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 592         notify-delay <em class="replaceable"><code>seconds</code></em>;<br>
 593         notify-to-soa <em class="replaceable"><code>boolean</code></em>;<br>
 594         also-notify [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] { ( <em class="replaceable"><code>ipv4_address</code></em> | <em class="replaceable"><code>ipv6_address</code></em> )<br>
 595                 [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>]; ...<br>
 596                 [<span class="optional"> key <em class="replaceable"><code>keyname</code></em> </span>] ... };<br>
 597         allow-notify { <em class="replaceable"><code>address_match_element</code></em>; ... };<br>
 598 <br>
 599         forward ( first | only );<br>
 600         forwarders [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>] {<br>
 601                 ( <em class="replaceable"><code>ipv4_address</code></em> | <em class="replaceable"><code>ipv6_address</code></em> ) [<span class="optional"> port <em class="replaceable"><code>integer</code></em> </span>]; ...<br>
 602         };<br>
 603 <br>
 604         max-journal-size <em class="replaceable"><code>size_no_default</code></em>;<br>
 605         max-transfer-time-in <em class="replaceable"><code>integer</code></em>;<br>
 606         max-transfer-time-out <em class="replaceable"><code>integer</code></em>;<br>
 607         max-transfer-idle-in <em class="replaceable"><code>integer</code></em>;<br>
 608         max-transfer-idle-out <em class="replaceable"><code>integer</code></em>;<br>
 609         max-retry-time <em class="replaceable"><code>integer</code></em>;<br>
 610         min-retry-time <em class="replaceable"><code>integer</code></em>;<br>
 611         max-refresh-time <em class="replaceable"><code>integer</code></em>;<br>
 612         min-refresh-time <em class="replaceable"><code>integer</code></em>;<br>
 613         multi-master <em class="replaceable"><code>boolean</code></em>;<br>
 614         request-ixfr <em class="replaceable"><code>boolean</code></em>;<br>
 615         sig-validity-interval <em class="replaceable"><code>integer</code></em>;<br>
 616 <br>
 617         transfer-source ( <em class="replaceable"><code>ipv4_address</code></em> | * )<br>
 618                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 619         transfer-source-v6 ( <em class="replaceable"><code>ipv6_address</code></em> | * )<br>
 620                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 621 <br>
 622         alt-transfer-source ( <em class="replaceable"><code>ipv4_address</code></em> | * )<br>
 623                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 624         alt-transfer-source-v6 ( <em class="replaceable"><code>ipv6_address</code></em> | * )<br>
 625                 [<span class="optional"> port ( <em class="replaceable"><code>integer</code></em> | * ) </span>];<br>
 626         use-alt-transfer-source <em class="replaceable"><code>boolean</code></em>;<br>
 627 <br>
 628         zone-statistics <em class="replaceable"><code>boolean</code></em>;<br>
 629         try-tcp-refresh <em class="replaceable"><code>boolean</code></em>;<br>
 630         key-directory <em class="replaceable"><code>quoted_string</code></em>;<br>
 631 <br>
 632         nsec3-test-zone <em class="replaceable"><code>boolean</code></em>;  // testing only<br>
 633 <br>
 634         ixfr-base <em class="replaceable"><code>quoted_string</code></em>; // obsolete<br>
 635         ixfr-tmp-file <em class="replaceable"><code>quoted_string</code></em>; // obsolete<br>
 636         maintain-ixfr-base <em class="replaceable"><code>boolean</code></em>; // obsolete<br>
 637         max-ixfr-log-size <em class="replaceable"><code>size</code></em>; // obsolete<br>
 638         pubkey <em class="replaceable"><code>integer</code></em> <em class="replaceable"><code>integer</code></em> <em class="replaceable"><code>integer</code></em> <em class="replaceable"><code>quoted_string</code></em>; // obsolete<br>
 639 };<br>
 640 </p></div>
 641 </div>
 642 <div class="refsection">
 643 <a name="id-1.14.17.20"></a><h2>FILES</h2>
 644 <p><code class="filename">/etc/named.conf</code>
 645     </p>
 646 </div>
 647 <div class="refsection">
 648 <a name="id-1.14.17.21"></a><h2>SEE ALSO</h2>
 649 <p><span class="citerefentry"><span class="refentrytitle">named</span>(8)</span>,
 650       <span class="citerefentry"><span class="refentrytitle">named-checkconf</span>(8)</span>,
 651       <span class="citerefentry"><span class="refentrytitle">rndc</span>(8)</span>,
 652       <em class="citetitle">BIND 9 Administrator Reference Manual</em>.
 653     </p>
 654 </div>
 655 </div>
 656 <div class="navfooter">
 657 <hr>
 658 <table width="100%" summary="Navigation footer">
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 675 <p xmlns:db="http://docbook.org/ns/docbook" style="text-align: center;">BIND 9.9.9-P3 (Extended Support Version)</p>
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