Bv9ARM.ch11.html revision 350e5eecadfc5ee72b11b2cc46828c9a0bcd717c
4b22b9337f359bfd063322244f5336cc7c6ffcfars<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4b22b9337f359bfd063322244f5336cc7c6ffcfars - Copyright (C) 2000-2017 Internet Systems Consortium, Inc. ("ISC")
4b22b9337f359bfd063322244f5336cc7c6ffcfars - This Source Code Form is subject to the terms of the Mozilla Public
4b22b9337f359bfd063322244f5336cc7c6ffcfars - License, v. 2.0. If a copy of the MPL was not distributed with this
4b22b9337f359bfd063322244f5336cc7c6ffcfars - file, You can obtain one at http://mozilla.org/MPL/2.0/.
4b22b9337f359bfd063322244f5336cc7c6ffcfars<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
4b22b9337f359bfd063322244f5336cc7c6ffcfars<title>Appendix�C.�General DNS Reference Information</title>
4b22b9337f359bfd063322244f5336cc7c6ffcfars<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
4b22b9337f359bfd063322244f5336cc7c6ffcfars<link rel="home" href="Bv9ARM.html" title="BIND 9 Administrator Reference Manual">
4b22b9337f359bfd063322244f5336cc7c6ffcfars<link rel="up" href="Bv9ARM.html" title="BIND 9 Administrator Reference Manual">
4b22b9337f359bfd063322244f5336cc7c6ffcfars<link rel="prev" href="Bv9ARM.ch10.html" title="Appendix�B.�A Brief History of the DNS and BIND">
4b22b9337f359bfd063322244f5336cc7c6ffcfars<link rel="next" href="Bv9ARM.ch12.html" title="Appendix�D.�BIND 9 DNS Library Support">
4b22b9337f359bfd063322244f5336cc7c6ffcfars<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
bfed486ad8de8b8ebc6345a8e10accae08bf2f45Ali Bahrami<tr><th colspan="3" align="center">Appendix�C.�General <acronym class="acronym">DNS</acronym> Reference Information</th></tr>
bfed486ad8de8b8ebc6345a8e10accae08bf2f45Ali Bahrami<a accesskey="p" href="Bv9ARM.ch10.html">Prev</a>�</td>
bfed486ad8de8b8ebc6345a8e10accae08bf2f45Ali Bahrami<td width="20%" align="right">�<a accesskey="n" href="Bv9ARM.ch12.html">Next</a>
bfed486ad8de8b8ebc6345a8e10accae08bf2f45Ali Bahrami<div class="titlepage"><div><div><h1 class="title">
bfed486ad8de8b8ebc6345a8e10accae08bf2f45Ali Bahrami<a name="Bv9ARM.ch11"></a>General <acronym class="acronym">DNS</acronym> Reference Information</h1></div></div></div>
4b22b9337f359bfd063322244f5336cc7c6ffcfars<dt><span class="section"><a href="Bv9ARM.ch11.html#ipv6addresses">IPv6 addresses (AAAA)</a></span></dt>
4b22b9337f359bfd063322244f5336cc7c6ffcfars<dt><span class="section"><a href="Bv9ARM.ch11.html#bibliography">Bibliography (and Suggested Reading)</a></span></dt>
4b22b9337f359bfd063322244f5336cc7c6ffcfars<dt><span class="section"><a href="Bv9ARM.ch11.html#rfcs">Request for Comments (RFCs)</a></span></dt>
4b22b9337f359bfd063322244f5336cc7c6ffcfars<dt><span class="section"><a href="Bv9ARM.ch11.html#internet_drafts">Internet Drafts</a></span></dt>
4b22b9337f359bfd063322244f5336cc7c6ffcfars<dt><span class="section"><a href="Bv9ARM.ch11.html#more_about_bind">Other Documents About <acronym class="acronym">BIND</acronym></a></span></dt>
4b22b9337f359bfd063322244f5336cc7c6ffcfars<div class="titlepage"><div><div><h2 class="title" style="clear: both">
4b22b9337f359bfd063322244f5336cc7c6ffcfars<a name="ipv6addresses"></a>IPv6 addresses (AAAA)</h2></div></div></div>
4b22b9337f359bfd063322244f5336cc7c6ffcfars IPv6 addresses are 128-bit identifiers for interfaces and
4b22b9337f359bfd063322244f5336cc7c6ffcfars sets of interfaces which were introduced in the <acronym class="acronym">DNS</acronym> to facilitate
4b22b9337f359bfd063322244f5336cc7c6ffcfars scalable Internet routing. There are three types of addresses: <span class="emphasis"><em>Unicast</em></span>,
4b22b9337f359bfd063322244f5336cc7c6ffcfars an identifier for a single interface;
4b22b9337f359bfd063322244f5336cc7c6ffcfars an identifier for a set of interfaces; and <span class="emphasis"><em>Multicast</em></span>,
4b22b9337f359bfd063322244f5336cc7c6ffcfars an identifier for a set of interfaces. Here we describe the global
4b22b9337f359bfd063322244f5336cc7c6ffcfars Unicast address scheme. For more information, see RFC 3587,
4b22b9337f359bfd063322244f5336cc7c6ffcfars "Global Unicast Address Format."
4b22b9337f359bfd063322244f5336cc7c6ffcfars IPv6 unicast addresses consist of a
4b22b9337f359bfd063322244f5336cc7c6ffcfars <span class="emphasis"><em>global routing prefix</em></span>, a
4b22b9337f359bfd063322244f5336cc7c6ffcfars <span class="emphasis"><em>subnet identifier</em></span>, and an
4b22b9337f359bfd063322244f5336cc7c6ffcfars <span class="emphasis"><em>interface identifier</em></span>.
<span class="author"><span class="firstname">C.</span> <span class="surname">Partridge</span>. </span>
<span class="author"><span class="firstname">P.V.</span> <span class="surname">Mockapetris</span>. </span>
<span class="citetitle"><em class="citetitle">Domain Names — Concepts and Facilities</em>. </span>
<span class="author"><span class="firstname">P. V.</span> <span class="surname">Mockapetris</span>. </span> <span class="citetitle"><em class="citetitle">Domain Names — Implementation and
<span class="author"><span class="firstname">R., R. Bush</span> <span class="surname">Elz</span>. </span>
<span class="citetitle"><em class="citetitle">Clarifications to the <acronym class="acronym">DNS</acronym>
<span class="author"><span class="firstname">M.</span> <span class="surname">Andrews</span>. </span>
<span class="citetitle"><em class="citetitle">Negative Caching of <acronym class="acronym">DNS</acronym>
<span class="citetitle"><em class="citetitle">Incremental Zone Transfer in <acronym class="acronym">DNS</acronym></em>. </span>
<span class="citetitle"><em class="citetitle">A Mechanism for Prompt Notification of Zone Changes</em>. </span>
<span class="authorgroup"><span class="firstname">P.</span> <span class="surname">Vixie</span>, <span class="firstname">S.</span> <span class="surname">Thomson</span>, <span class="firstname">Y.</span> <span class="surname">Rekhter</span>, and <span class="firstname">J.</span> <span class="surname">Bound</span>. </span>
<span class="citetitle"><em class="citetitle">Dynamic Updates in the Domain Name System</em>. </span>
<span class="authorgroup"><span class="firstname">P.</span> <span class="surname">Vixie</span>. </span>
<span class="authorgroup"><span class="firstname">M.</span> <span class="surname">Crawford</span>. </span>
<span class="authorgroup"><span class="firstname">P.</span> <span class="surname">Vixie</span>, <span class="firstname">O.</span> <span class="surname">Gudmundsson</span>, <span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>, and <span class="firstname">B.</span> <span class="surname">Wellington</span>. </span>
<span class="citetitle"><em class="citetitle">Secret Key Transaction Authentication for <acronym class="acronym">DNS</acronym> (TSIG)</em>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>. </span>
<span class="citetitle"><em class="citetitle">Secret Key Establishment for DNS (TKEY RR)</em>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>. </span>
<span class="citetitle"><em class="citetitle">DNS Request and Transaction Signatures (SIG(0)s)</em>. </span>
<span class="authorgroup"><span class="firstname">B.</span> <span class="surname">Wellington</span>. </span>
<span class="citetitle"><em class="citetitle">Secure Domain Name System (DNS) Dynamic Update</em>. </span>
<span class="authorgroup"><span class="firstname">S.</span> <span class="surname">Kwan</span>, <span class="firstname">P.</span> <span class="surname">Garg</span>, <span class="firstname">J.</span> <span class="surname">Gilroy</span>, <span class="firstname">L.</span> <span class="surname">Esibov</span>, <span class="firstname">J.</span> <span class="surname">Westhead</span>, and <span class="firstname">R.</span> <span class="surname">Hall</span>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Conrad</span>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Atkins</span> and <span class="firstname">R.</span> <span class="surname">Austein</span>. </span>
<span class="citetitle"><em class="citetitle">Threat Analysis of the Domain Name System (DNS)</em>. </span>
<span class="authorgroup"><span class="firstname">R.</span> <span class="surname">Arends</span>, <span class="firstname">R.</span> <span class="surname">Austein</span>, <span class="firstname">M.</span> <span class="surname">Larson</span>, <span class="firstname">D.</span> <span class="surname">Massey</span>, and <span class="firstname">S.</span> <span class="surname">Rose</span>. </span>
<span class="citetitle"><em class="citetitle">DNS Security Introduction and Requirements</em>. </span>
<span class="authorgroup"><span class="firstname">R.</span> <span class="surname">Arends</span>, <span class="firstname">R.</span> <span class="surname">Austein</span>, <span class="firstname">M.</span> <span class="surname">Larson</span>, <span class="firstname">D.</span> <span class="surname">Massey</span>, and <span class="firstname">S.</span> <span class="surname">Rose</span>. </span>
<span class="citetitle"><em class="citetitle">Resource Records for the DNS Security Extensions</em>. </span>
<span class="authorgroup"><span class="firstname">R.</span> <span class="surname">Arends</span>, <span class="firstname">R.</span> <span class="surname">Austein</span>, <span class="firstname">M.</span> <span class="surname">Larson</span>, <span class="firstname">D.</span> <span class="surname">Massey</span>, and <span class="firstname">S.</span> <span class="surname">Rose</span>. </span>
<span class="citetitle"><em class="citetitle">A Security Problem and Proposed Correction With Widely
<span class="authorgroup"><span class="firstname">A.</span> <span class="surname">Kumar</span>, <span class="firstname">J.</span> <span class="surname">Postel</span>, <span class="firstname">C.</span> <span class="surname">Neuman</span>, <span class="firstname">P.</span> <span class="surname">Danzig</span>, and <span class="firstname">S.</span> <span class="surname">Miller</span>. </span>
<span class="citetitle"><em class="citetitle">Common <acronym class="acronym">DNS</acronym> Implementation
<span class="authorgroup"><span class="firstname">R.</span> <span class="surname">Elz</span> and <span class="firstname">R.</span> <span class="surname">Bush</span>. </span>
<span class="authorgroup"><span class="firstname">Y.</span> <span class="surname">Morishita</span> and <span class="firstname">T.</span> <span class="surname">Jinmei</span>. </span>
<span class="citetitle"><em class="citetitle">Common Misbehaviour Against <acronym class="acronym">DNS</acronym>
<span class="authorgroup"><span class="firstname">C.F.</span> <span class="surname">Everhart</span>, <span class="firstname">L. A.</span> <span class="surname">Mamakos</span>, <span class="firstname">R.</span> <span class="surname">Ullmann</span>, and <span class="firstname">P.</span> <span class="surname">Mockapetris</span>. </span>
<span class="citetitle"><em class="citetitle">New <acronym class="acronym">DNS</acronym> RR Definitions</em>. </span>
<span class="authorgroup"><span class="firstname">B.</span> <span class="surname">Manning</span> and <span class="firstname">R.</span> <span class="surname">Colella</span>. </span>
<span class="citetitle"><em class="citetitle"><acronym class="acronym">DNS</acronym> NSAP Resource Records</em>. </span>
<span class="authorgroup"><span class="firstname">R.</span> <span class="surname">Daniel</span> and <span class="firstname">M.</span> <span class="surname">Mealling</span>. </span>
<span class="authorgroup"><span class="firstname">C.</span> <span class="surname">Davis</span>, <span class="firstname">P.</span> <span class="surname">Vixie</span>, <span class="firstname">T.</span>, and <span class="firstname">I.</span> <span class="surname">Dickinson</span>. </span>
<span class="authorgroup"><span class="firstname">A.</span> <span class="surname">Gulbrandsen</span> and <span class="firstname">P.</span> <span class="surname">Vixie</span>. </span>
<span class="citetitle"><em class="citetitle">A <acronym class="acronym">DNS</acronym> RR for Specifying the
<span class="author"><span class="firstname">A.</span> <span class="surname">Allocchio</span>. </span>
<span class="citetitle"><em class="citetitle">Using the Internet <acronym class="acronym">DNS</acronym> to
<span class="author"><span class="firstname">R.</span> <span class="surname">Atkinson</span>. </span>
<span class="citetitle"><em class="citetitle">Key Exchange Delegation Record for the <acronym class="acronym">DNS</acronym></em>. </span>
<span class="author"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>. </span>
<span class="citetitle"><em class="citetitle">DSA KEYs and SIGs in the Domain Name System (DNS)</em>. </span>
<span class="author"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>. </span>
<span class="citetitle"><em class="citetitle">RSA/MD5 KEYs and SIGs in the Domain Name System (DNS)</em>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span> and <span class="firstname">O.</span> <span class="surname">Gudmundsson</span>. </span>
<span class="citetitle"><em class="citetitle">Storing Certificates in the Domain Name System (DNS)</em>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>. </span>
<span class="citetitle"><em class="citetitle">Storage of Diffie-Hellman Keys in the Domain Name System (DNS)</em>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>. </span>
<span class="citetitle"><em class="citetitle">Detached Domain Name System (DNS) Information</em>. </span>
<span class="author"><span class="firstname">A.</span> <span class="surname">Gulbrandsen</span>. </span>
<span class="citetitle"><em class="citetitle">A DNS RR for specifying the location of services (DNS SRV)</em>. </span>
<span class="author"><span class="firstname">M.</span> <span class="surname">Mealling</span>. </span>
<span class="citetitle"><em class="citetitle">The Naming Authority Pointer (NAPTR) DNS Resource Record</em>. </span>
<span class="author"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>. </span>
<span class="citetitle"><em class="citetitle">RSA/SHA-1 SIGs and RSA KEYs in the Domain Name System (DNS)</em>. </span>
<span class="citetitle"><em class="citetitle">A DNS RR Type for Lists of Address Prefixes (APL RR)</em>. </span>
<span class="authorgroup"><span class="firstname">S.</span> <span class="surname">Thomson</span>, <span class="firstname">C.</span> <span class="surname">Huitema</span>, <span class="firstname">V.</span> <span class="surname">Ksinant</span>, and <span class="firstname">M.</span> <span class="surname">Souissi</span>. </span>
<span class="citetitle"><em class="citetitle"><acronym class="acronym">DNS</acronym> Extensions to support IP
<span class="author"><span class="firstname">A.</span> <span class="surname">Gustafsson</span>. </span>
<span class="citetitle"><em class="citetitle">Handling of Unknown DNS Resource Record (RR) Types</em>. </span>
<span class="author"><span class="firstname">P. V.</span> <span class="surname">Mockapetris</span>. </span>
<span class="citetitle"><em class="citetitle"><acronym class="acronym">DNS</acronym> Encoding of Network Names
<span class="citetitle"><em class="citetitle">Domain Name System Structure and Delegation</em>. </span>
<span class="authorgroup"><span class="firstname">H.</span> <span class="surname">Eidnes</span>, <span class="firstname">G.</span> <span class="surname">de Groot</span>, and <span class="firstname">P.</span> <span class="surname">Vixie</span>. </span>
<span class="citetitle"><em class="citetitle">IAB Technical Comment on the Unique DNS Root</em>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>, <span class="firstname">E.</span> <span class="surname">Brunner-Williams</span>, and <span class="firstname">B.</span> <span class="surname">Manning</span>. </span>
<span class="citetitle"><em class="citetitle">Domain Name System (DNS) IANA Considerations</em>. </span>
<span class="author"><span class="firstname">P.</span> <span class="surname">Beertema</span>. </span>
<span class="citetitle"><em class="citetitle">Common <acronym class="acronym">DNS</acronym> Data File
<span class="citetitle"><em class="citetitle">Common <acronym class="acronym">DNS</acronym> Operational and
<span class="authorgroup"><span class="firstname">B.</span> <span class="surname">Manning</span> and <span class="firstname">P.</span> <span class="surname">Vixie</span>. </span>
<span class="citetitle"><em class="citetitle">Operational Criteria for Root Name Servers</em>. </span>
<span class="authorgroup"><span class="firstname">M.</span> <span class="surname">Hamilton</span> and <span class="firstname">R.</span> <span class="surname">Wright</span>. </span>
<span class="citetitle"><em class="citetitle">Use of <acronym class="acronym">DNS</acronym> Aliases for
<span class="authorgroup"><span class="surname">IAB</span> and <span class="firstname">R.</span> <span class="surname">Daigle</span>. </span>
<span class="authorgroup"><span class="firstname">P.</span> <span class="surname">Faltstrom</span>, <span class="firstname">P.</span> <span class="surname">Hoffman</span>, and <span class="firstname">A.</span> <span class="surname">Costello</span>. </span>
<span class="citetitle"><em class="citetitle">Internationalizing Domain Names in Applications (IDNA)</em>. </span>
<span class="authorgroup"><span class="firstname">P.</span> <span class="surname">Hoffman</span> and <span class="firstname">M.</span> <span class="surname">Blanchet</span>. </span>
<span class="citetitle"><em class="citetitle">Nameprep: A Stringprep Profile for Internationalized Domain Names</em>. </span>
<span class="authorgroup"><span class="firstname">A.</span> <span class="surname">Costello</span>. </span>
<span class="author"><span class="firstname">R.</span> <span class="surname">Rosenbaum</span>. </span>
<span class="citetitle"><em class="citetitle">Using the Domain Name System To Store Arbitrary String
<span class="citetitle"><em class="citetitle">Tools for <acronym class="acronym">DNS</acronym> Debugging</em>. </span>
<span class="citetitle"><em class="citetitle"><acronym class="acronym">DNS</acronym> Support for Load
<span class="author"><span class="firstname">O.</span> <span class="surname">Vaughan</span>. </span>
<span class="citetitle"><em class="citetitle">A Legal Basis for Domain Name Allocation</em>. </span>
<span class="authorgroup"><span class="firstname">J.</span> <span class="surname">Klensin</span>, <span class="firstname">T.</span> <span class="surname">Wolf</span>, and <span class="firstname">G.</span> <span class="surname">Oglesby</span>. </span>
<span class="author"><span class="firstname">O.</span> <span class="surname">Vaughan</span>. </span>
<span class="citetitle"><em class="citetitle">A Convention For Using Legal Names as Domain Names</em>. </span>
<span class="authorgroup"><span class="firstname">J.</span> <span class="surname">Klensin</span>. </span>
<span class="citetitle"><em class="citetitle">Reflections on the DNS, RFC 1591, and Categories of Domains</em>. </span>
<span class="authorgroup"><span class="firstname">T.</span> <span class="surname">Hardie</span>. </span>
<span class="authorgroup"><span class="firstname">A.</span> <span class="surname">Durand</span> and <span class="firstname">J.</span> <span class="surname">Ihren</span>. </span>
<span class="citetitle"><em class="citetitle">DNS IPv6 Transport Operational Guidelines</em>. </span>
<span class="authorgroup"><span class="firstname">C.</span> <span class="surname">Farrell</span>, <span class="firstname">M.</span> <span class="surname">Schulze</span>, <span class="firstname">S.</span> <span class="surname">Pleitner</span>, and <span class="firstname">D.</span> <span class="surname">Baldoni</span>. </span>
<span class="citetitle"><em class="citetitle"><acronym class="acronym">DNS</acronym> Encoding of Geographical
<span class="authorgroup"><span class="firstname">M.</span> <span class="surname">Crawford</span>. </span>
<span class="authorgroup"><span class="firstname">M.</span> <span class="surname">Crawford</span> and <span class="firstname">C.</span> <span class="surname">Huitema</span>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span> and <span class="firstname">C.</span> <span class="surname">Kaufman</span>. </span>
<span class="author"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>. </span>
<span class="citetitle"><em class="citetitle">Secure Domain Name System Dynamic Update</em>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Eastlake</span>, <span class="lineage">3rd</span>. </span>
<span class="authorgroup"><span class="firstname">B.</span> <span class="surname">Wellington</span>. </span>
<span class="authorgroup"><span class="firstname">E.</span> <span class="surname">Lewis</span>. </span>
<span class="citetitle"><em class="citetitle">DNS Security Extension Clarification on Zone Status</em>. </span>
<span class="authorgroup"><span class="firstname">D.</span> <span class="surname">Massey</span> and <span class="firstname">S.</span> <span class="surname">Rose</span>. </span>
<span class="citetitle"><em class="citetitle">Limiting the Scope of the KEY Resource Record (RR)</em>. </span>
<span class="authorgroup"><span class="firstname">B.</span> <span class="surname">Wellington</span> and <span class="firstname">O.</span> <span class="surname">Gudmundsson</span>. </span>
<span class="citetitle"><em class="citetitle">Redefinition of DNS Authenticated Data (AD) bit</em>. </span>
<span class="authorgroup"><span class="firstname">O.</span> <span class="surname">Gudmundsson</span>. </span>
<span class="citetitle"><em class="citetitle">Delegation Signer (DS) Resource Record (RR)</em>. </span>
<span class="authorgroup"><span class="firstname">S.</span> <span class="surname">Weiler</span>. </span>
<span class="citetitle"><em class="citetitle">Legacy Resolver Compatibility for Delegation Signer (DS)</em>. </span>
<span class="authorgroup"><span class="firstname">O.</span> <span class="surname">Kolkman</span>, <span class="firstname">J.</span> <span class="surname">Schlyter</span>, and <span class="firstname">E.</span> <span class="surname">Lewis</span>. </span>
<span class="authorgroup"><span class="firstname">J.</span> <span class="surname">Schlyter</span>. </span>
<span class="citetitle"><em class="citetitle">DNS Security (DNSSEC) NextSECure (NSEC) RDATA Format</em>. </span>
<span class="authorgroup"><span class="firstname">Paul</span> <span class="surname">Albitz</span> and <span class="firstname">Cricket</span> <span class="surname">Liu</span>. </span>
<span class="citetitle"><em class="citetitle"><acronym class="acronym">DNS</acronym> and <acronym class="acronym">BIND</acronym></em>. </span>
<td width="40%" align="left" valign="top">Appendix�B.�A Brief History of the <acronym class="acronym">DNS</acronym> and <acronym class="acronym">BIND</acronym>�</td>
<p xmlns:db="http://docbook.org/ns/docbook" style="text-align: center;">BIND 9.11.2 (Extended Support Version)</p>