| 1 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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| 2 | <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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| 3 |   <head>
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| 4 |     <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
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| 5 |     <title>Reverse DNS Template Reference</title>
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| 6 |     <!-- General stylesheet for most content, all browsers -->
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| 7 |     <link rel="stylesheet" type="text/css" href="templates/dns.css" />
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| 8 |     <!-- Custom local stylesheet, if desired -->
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| 9 |     <link rel="stylesheet" type="text/css" href="local.css" />
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| 10 |   </head>
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| 11 |   <body>
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| 12 |     <div id="main">
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| 13 |       <h2>Reverse DNS Template Reference</h2>
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| 14 |       <table class="container" cellpadding="2" cellspacing="2">
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| 15 |         <tbody>
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| 16 |           <tr class="tableheader">
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| 17 |             <td></td>
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| 18 |             <td>Substitution pattern</td>
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| 19 |             <td>Example expansion using 192.168.23.45</td>
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| 20 |           </tr>
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| 21 |           <tr class="tableheader">
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| 22 |             <td colspan="3">Whole-IP patterns</td>
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| 23 |           </tr>
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| 24 |           <tr class="row0">
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| 25 |             <td>Dashed IP</td>
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| 26 |             <td>%i</td>
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| 27 |             <td>192-168-23-45</td>
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| 28 |           </tr>
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| 29 |           <tr class="row1">
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| 30 |             <td>Reverse dashed IP</td>
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| 31 |             <td>%r</td>
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| 32 |             <td>45-23-168-192</td>
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| 33 |           </tr>
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| 34 |           <tr class="row0">
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| 35 |             <td>Hex-coded IP</td>
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| 36 |             <td>%h</td>
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| 37 |             <td>c0a8172d</td>
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| 38 |           </tr>
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| 39 |           <tr class="row1">
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| 40 |             <td>Decimal IP</td>
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| 41 |             <td>%d</td>
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| 42 |             <td>323241453</td>
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| 43 |           </tr>
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| 44 |           <tr class="tableheader">
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| 45 |             <td colspan="3">Per-octet patterns (1, 2, 3, or 4 specify
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| 46 |               the octet; d, h or 0 specify decimal, hexidecimal, or
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| 47 |               0-padded decimal)</td>
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| 48 |           </tr>
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| 49 |           <tr class="row0">
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| 50 |             <td>First octet, decimal</td>
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| 51 |             <td>%1d</td>
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| 52 |             <td>192</td>
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| 53 |           </tr>
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| 54 |           <tr class="row1">
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| 55 |             <td>Third octet, 0-padded</td>
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| 56 |             <td>%30</td>
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| 57 |             <td>023</td>
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| 58 |           </tr>
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| 59 |           <tr class="row0">
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| 60 |             <td>Fourth octet, hexidecimal</td>
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| 61 |             <td>%4h</td>
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| 62 |             <td>2d</td>
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| 63 |           </tr>
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| 64 |           <tr class="row1">
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| 65 |             <td>All octets, different expansions</td>
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| 66 |             <td>%1h-%2d-%30-%4h</td>
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| 67 |             <td>c0-168-023-2d</td>
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| 68 |           </tr>
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| 69 |         </tbody>
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| 70 |       </table>
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| 71 |       <p> %i and %r also allow explicitly defining the separator; eg %.i
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| 72 |         or %_r. '.', '-', and '_' are the only characters<br />
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| 73 |         supported since DNS names may not contain most other
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| 74 |         non-alphanumerics.</p>
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| 75 |       <p>%blank% may be used to specifically prevent template expansion on
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| 76 |         a segment of a block if desired;  eg, if<br />
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| 77 |         192.168.23.0/24 has "unused-%i.example.com" set, adding an A+PTR
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| 78 |         template for 192.168.23.48/30 of<br />
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| 79 |         "%blank%" will leave 192.168.23.48 through .51 without PTR records
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| 80 |         unless specific entries exist for those IPs.<p>
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| 81 |     </div>
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| 82 |   </body>
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| 83 | </html>
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