2017-09-12 00:16:47 +00:00
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<title>dnssec-coverage</title>
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<link rel="home" href="Bv9ARM.html" title="BIND 9 Administrator Reference Manual">
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<link rel="up" href="Bv9ARM.ch13.html" title="Manual pages">
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<link rel="prev" href="man.dnssec-checkds.html" title="dnssec-checkds">
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<link rel="next" href="man.dnssec-dsfromkey.html" title="dnssec-dsfromkey">
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<table width="100%" summary="Navigation header">
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<tr><th colspan="3" align="center"><span class="application">dnssec-coverage</span></th></tr>
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<tr>
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<td width="20%" align="left">
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<a accesskey="p" href="man.dnssec-checkds.html">Prev</a><EFBFBD></td>
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<th width="60%" align="center">Manual pages</th>
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<td width="20%" align="right"><EFBFBD><a accesskey="n" href="man.dnssec-dsfromkey.html">Next</a>
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</td>
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</tr>
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</table>
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<hr>
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</div>
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<div class="refentry">
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<a name="man.dnssec-coverage"></a><div class="titlepage"></div>
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<div class="refnamediv">
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<h2>Name</h2>
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<p>
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<span class="application">dnssec-coverage</span>
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— checks future DNSKEY coverage for a zone
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</p>
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</div>
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<div class="refsynopsisdiv">
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<h2>Synopsis</h2>
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<div class="cmdsynopsis"><p>
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<code class="command">dnssec-coverage</code>
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[<code class="option">-K <em class="replaceable"><code>directory</code></em></code>]
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[<code class="option">-l <em class="replaceable"><code>length</code></em></code>]
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[<code class="option">-f <em class="replaceable"><code>file</code></em></code>]
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[<code class="option">-d <em class="replaceable"><code>DNSKEY TTL</code></em></code>]
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[<code class="option">-m <em class="replaceable"><code>max TTL</code></em></code>]
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[<code class="option">-r <em class="replaceable"><code>interval</code></em></code>]
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[<code class="option">-c <em class="replaceable"><code>compilezone path</code></em></code>]
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[<code class="option">-k</code>]
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[<code class="option">-z</code>]
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[zone...]
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</p></div>
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</div>
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<div class="refsection">
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<a name="id-1.14.8.7"></a><h2>DESCRIPTION</h2>
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<p><span class="command"><strong>dnssec-coverage</strong></span>
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verifies that the DNSSEC keys for a given zone or a set of zones
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have timing metadata set properly to ensure no future lapses in DNSSEC
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coverage.
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</p>
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<p>
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If <code class="option">zone</code> is specified, then keys found in
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the key repository matching that zone are scanned, and an ordered
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list is generated of the events scheduled for that key (i.e.,
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publication, activation, inactivation, deletion). The list of
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events is walked in order of occurrence. Warnings are generated
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if any event is scheduled which could cause the zone to enter a
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state in which validation failures might occur: for example, if
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the number of published or active keys for a given algorithm drops
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to zero, or if a key is deleted from the zone too soon after a new
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key is rolled, and cached data signed by the prior key has not had
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time to expire from resolver caches.
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</p>
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<p>
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If <code class="option">zone</code> is not specified, then all keys in the
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key repository will be scanned, and all zones for which there are
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keys will be analyzed. (Note: This method of reporting is only
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accurate if all the zones that have keys in a given repository
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share the same TTL parameters.)
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</p>
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</div>
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<div class="refsection">
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<a name="id-1.14.8.8"></a><h2>OPTIONS</h2>
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<div class="variablelist"><dl class="variablelist">
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<dt><span class="term">-K <em class="replaceable"><code>directory</code></em></span></dt>
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<dd>
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<p>
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Sets the directory in which keys can be found. Defaults to the
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current working directory.
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</p>
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</dd>
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<dt><span class="term">-f <em class="replaceable"><code>file</code></em></span></dt>
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<dd>
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<p>
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If a <code class="option">file</code> is specified, then the zone is
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read from that file; the largest TTL and the DNSKEY TTL are
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determined directly from the zone data, and the
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<code class="option">-m</code> and <code class="option">-d</code> options do
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not need to be specified on the command line.
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</p>
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</dd>
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<dt><span class="term">-l <em class="replaceable"><code>duration</code></em></span></dt>
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<dd>
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<p>
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The length of time to check for DNSSEC coverage. Key events
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scheduled further into the future than <code class="option">duration</code>
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will be ignored, and assumed to be correct.
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</p>
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<p>
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The value of <code class="option">duration</code> can be set in seconds,
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or in larger units of time by adding a suffix: 'mi' for minutes,
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'h' for hours, 'd' for days, 'w' for weeks, 'mo' for months,
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'y' for years.
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</p>
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</dd>
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<dt><span class="term">-m <em class="replaceable"><code>maximum TTL</code></em></span></dt>
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<dd>
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<p>
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Sets the value to be used as the maximum TTL for the zone or
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zones being analyzed when determining whether there is a
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possibility of validation failure. When a zone-signing key is
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deactivated, there must be enough time for the record in the
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zone with the longest TTL to have expired from resolver caches
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before that key can be purged from the DNSKEY RRset. If that
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condition does not apply, a warning will be generated.
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</p>
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<p>
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The length of the TTL can be set in seconds, or in larger units
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of time by adding a suffix: 'mi' for minutes, 'h' for hours,
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'd' for days, 'w' for weeks, 'mo' for months, 'y' for years.
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</p>
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<p>
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This option is not necessary if the <code class="option">-f</code> has
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been used to specify a zone file. If <code class="option">-f</code> has
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been specified, this option may still be used; it will override
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the value found in the file.
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</p>
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<p>
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If this option is not used and the maximum TTL cannot be retrieved
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from a zone file, a warning is generated and a default value of
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1 week is used.
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</p>
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</dd>
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<dt><span class="term">-d <em class="replaceable"><code>DNSKEY TTL</code></em></span></dt>
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<dd>
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<p>
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Sets the value to be used as the DNSKEY TTL for the zone or
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zones being analyzed when determining whether there is a
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possibility of validation failure. When a key is rolled (that
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is, replaced with a new key), there must be enough time for the
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old DNSKEY RRset to have expired from resolver caches before
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the new key is activated and begins generating signatures. If
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that condition does not apply, a warning will be generated.
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</p>
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<p>
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The length of the TTL can be set in seconds, or in larger units
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of time by adding a suffix: 'mi' for minutes, 'h' for hours,
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'd' for days, 'w' for weeks, 'mo' for months, 'y' for years.
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</p>
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<p>
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This option is not necessary if <code class="option">-f</code> has
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been used to specify a zone file from which the TTL
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of the DNSKEY RRset can be read, or if a default key TTL was
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set using ith the <code class="option">-L</code> to
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<span class="command"><strong>dnssec-keygen</strong></span>. If either of those is true,
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this option may still be used; it will override the values
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found in the zone file or the key file.
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</p>
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<p>
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If this option is not used and the key TTL cannot be retrieved
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from the zone file or the key file, then a warning is generated
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and a default value of 1 day is used.
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</p>
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</dd>
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<dt><span class="term">-r <em class="replaceable"><code>resign interval</code></em></span></dt>
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<dd>
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<p>
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Sets the value to be used as the resign interval for the zone
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or zones being analyzed when determining whether there is a
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possibility of validation failure. This value defaults to
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22.5 days, which is also the default in
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<span class="command"><strong>named</strong></span>. However, if it has been changed
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by the <code class="option">sig-validity-interval</code> option in
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<code class="filename">named.conf</code>, then it should also be
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changed here.
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</p>
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<p>
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The length of the interval can be set in seconds, or in larger
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units of time by adding a suffix: 'mi' for minutes, 'h' for hours,
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'd' for days, 'w' for weeks, 'mo' for months, 'y' for years.
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</p>
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</dd>
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<dt><span class="term">-k</span></dt>
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<dd>
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<p>
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Only check KSK coverage; ignore ZSK events. Cannot be
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used with <code class="option">-z</code>.
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</p>
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</dd>
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<dt><span class="term">-z</span></dt>
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<dd>
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<p>
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Only check ZSK coverage; ignore KSK events. Cannot be
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used with <code class="option">-k</code>.
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</p>
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</dd>
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<dt><span class="term">-c <em class="replaceable"><code>compilezone path</code></em></span></dt>
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<dd>
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<p>
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Specifies a path to a <span class="command"><strong>named-compilezone</strong></span> binary.
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Used for testing.
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</p>
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</dd>
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</dl></div>
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</div>
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<div class="refsection">
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<a name="id-1.14.8.9"></a><h2>SEE ALSO</h2>
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<p>
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<span class="citerefentry">
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<span class="refentrytitle">dnssec-checkds</span>(8)
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</span>,
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<span class="citerefentry">
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<span class="refentrytitle">dnssec-dsfromkey</span>(8)
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</span>,
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<span class="citerefentry">
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<span class="refentrytitle">dnssec-keygen</span>(8)
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</span>,
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<span class="citerefentry">
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<span class="refentrytitle">dnssec-signzone</span>(8)
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</span>
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</p>
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</div>
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</div>
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<div class="navfooter">
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<hr>
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left">
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|
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<a accesskey="p" href="man.dnssec-checkds.html">Prev</a><EFBFBD></td>
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<td width="20%" align="center"><a accesskey="u" href="Bv9ARM.ch13.html">Up</a></td>
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<td width="40%" align="right"><EFBFBD><a accesskey="n" href="man.dnssec-dsfromkey.html">Next</a>
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</td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">
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<span class="application">dnssec-checkds</span><EFBFBD></td>
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<td width="20%" align="center"><a accesskey="h" href="Bv9ARM.html">Home</a></td>
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<td width="40%" align="right" valign="top"><EFBFBD><span class="application">dnssec-dsfromkey</span>
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</td>
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</tr>
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</table>
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</div>
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2017-12-15 01:08:34 +00:00
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<p xmlns:db="http://docbook.org/ns/docbook" style="text-align: center;">BIND 9.13.0-dev</p>
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2017-09-12 00:16:47 +00:00
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</body>
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</html>
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