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4518N/A<div class="refentry" lang="en">
4518N/A<a name="man.nsupdate"></a><div class="titlepage"></div>
4518N/A<div class="refnamediv">
4518N/A<h2>Name</h2>
4518N/A<p><span class="application">nsupdate</span> &#8212; Dynamic DNS update utility</p>
4518N/A</div>
4518N/A<div class="refsynopsisdiv">
4518N/A<h2>Synopsis</h2>
4518N/A<div class="cmdsynopsis"><p><code class="command">nsupdate</code> [<code class="option">-d</code>] [<code class="option">-D</code>] [[<code class="option">-g</code>] | [<code class="option">-o</code>] | [<code class="option">-l</code>] | [<code class="option">-y <em class="replaceable"><code>[<span class="optional">hmac:</span>]keyname:secret</code></em></code>] | [<code class="option">-k <em class="replaceable"><code>keyfile</code></em></code>]] [<code class="option">-t <em class="replaceable"><code>timeout</code></em></code>] [<code class="option">-u <em class="replaceable"><code>udptimeout</code></em></code>] [<code class="option">-r <em class="replaceable"><code>udpretries</code></em></code>] [<code class="option">-R <em class="replaceable"><code>randomdev</code></em></code>] [<code class="option">-v</code>] [<code class="option">-T</code>] [<code class="option">-P</code>] [<code class="option">-V</code>] [filename]</p></div>
4518N/A</div>
4518N/A<div class="refsect1" lang="en">
4518N/A<a name="id2653025"></a><h2>DESCRIPTION</h2>
4518N/A<p><span><strong class="command">nsupdate</strong></span>
4518N/A is used to submit Dynamic DNS Update requests as defined in RFC 2136
4518N/A to a name server.
4518N/A This allows resource records to be added or removed from a zone
4518N/A without manually editing the zone file.
4518N/A A single update request can contain requests to add or remove more than
4518N/A one
4518N/A resource record.
4518N/A </p>
4518N/A<p>
4518N/A Zones that are under dynamic control via
4518N/A <span><strong class="command">nsupdate</strong></span>
4518N/A or a DHCP server should not be edited by hand.
4518N/A Manual edits could
4518N/A conflict with dynamic updates and cause data to be lost.
4518N/A </p>
4518N/A<p>
4518N/A The resource records that are dynamically added or removed with
4518N/A <span><strong class="command">nsupdate</strong></span>
4518N/A have to be in the same zone.
4518N/A Requests are sent to the zone's master server.
4518N/A This is identified by the MNAME field of the zone's SOA record.
4518N/A </p>
4518N/A<p>
4518N/A The
4518N/A <code class="option">-d</code>
4518N/A option makes
4518N/A <span><strong class="command">nsupdate</strong></span>
4518N/A operate in debug mode.
4518N/A This provides tracing information about the update requests that are
4518N/A made and the replies received from the name server.
4518N/A </p>
4518N/A<p>
4518N/A The <code class="option">-D</code> option makes <span><strong class="command">nsupdate</strong></span>
4518N/A report additional debugging information to <code class="option">-d</code>.
4518N/A </p>
4518N/A<p>
4518N/A The <code class="option">-L</code> option with an integer argument of zero or
4518N/A higher sets the logging debug level. If zero, logging is disabled.
4518N/A </p>
4518N/A<p>
4518N/A Transaction signatures can be used to authenticate the Dynamic
4518N/A DNS updates. These use the TSIG resource record type described
4518N/A in RFC 2845 or the SIG(0) record described in RFC 2535 and
4518N/A RFC 2931 or GSS-TSIG as described in RFC 3645. TSIG relies on
4518N/A a shared secret that should only be known to
4518N/A <span><strong class="command">nsupdate</strong></span> and the name server. Currently,
4518N/A the only supported encryption algorithm for TSIG is HMAC-MD5,
4518N/A which is defined in RFC 2104. Once other algorithms are
4518N/A defined for TSIG, applications will need to ensure they select
4518N/A the appropriate algorithm as well as the key when authenticating
4518N/A each other. For instance, suitable <span class="type">key</span> and
4518N/A <span class="type">server</span> statements would be added to
4518N/A <code class="filename">/etc/named.conf</code> so that the name server
4518N/A can associate the appropriate secret key and algorithm with
4518N/A the IP address of the client application that will be using
4518N/A TSIG authentication. SIG(0) uses public key cryptography.
4518N/A To use a SIG(0) key, the public key must be stored in a KEY
4518N/A record in a zone served by the name server.
4518N/A <span><strong class="command">nsupdate</strong></span> does not read
4518N/A <code class="filename">/etc/named.conf</code>.
4518N/A </p>
4518N/A<p>
4518N/A GSS-TSIG uses Kerberos credentials. Standard GSS-TSIG mode
4518N/A is switched on with the <code class="option">-g</code> flag. A
4518N/A non-standards-compliant variant of GSS-TSIG used by Windows
4518N/A 2000 can be switched on with the <code class="option">-o</code> flag.
4518N/A </p>
4518N/A<p><span><strong class="command">nsupdate</strong></span>
4518N/A uses the <code class="option">-y</code> or <code class="option">-k</code> option
4518N/A to provide the shared secret needed to generate a TSIG record
4518N/A for authenticating Dynamic DNS update requests, default type
4518N/A HMAC-MD5. These options are mutually exclusive.
4518N/A </p>
4518N/A<p>
4518N/A When the <code class="option">-y</code> option is used, a signature is
4518N/A generated from
4518N/A [<span class="optional"><em class="parameter"><code>hmac:</code></em></span>]<em class="parameter"><code>keyname:secret.</code></em>
4518N/A <em class="parameter"><code>keyname</code></em> is the name of the key, and
4518N/A <em class="parameter"><code>secret</code></em> is the base64 encoded shared secret.
4518N/A Use of the <code class="option">-y</code> option is discouraged because the
4518N/A shared secret is supplied as a command line argument in clear text.
4518N/A This may be visible in the output from
4518N/A <span class="citerefentry"><span class="refentrytitle">ps</span>(1)</span>
4518N/A or in a history file maintained by the user's shell.
4518N/A </p>
4518N/A<p>
4518N/A With the
4518N/A <code class="option">-k</code> option, <span><strong class="command">nsupdate</strong></span> reads
4518N/A the shared secret from the file <em class="parameter"><code>keyfile</code></em>.
4518N/A Keyfiles may be in two formats: a single file containing
4518N/A a <code class="filename">named.conf</code>-format <span><strong class="command">key</strong></span>
4518N/A statement, which may be generated automatically by
4518N/A <span><strong class="command">ddns-confgen</strong></span>, or a pair of files whose names are
4518N/A of the format <code class="filename">K{name}.+157.+{random}.key</code> and
4518N/A <code class="filename">K{name}.+157.+{random}.private</code>, which can be
4518N/A generated by <span><strong class="command">dnssec-keygen</strong></span>.
4518N/A The <code class="option">-k</code> may also be used to specify a SIG(0) key used
4518N/A to authenticate Dynamic DNS update requests. In this case, the key
4518N/A specified is not an HMAC-MD5 key.
4518N/A </p>
4518N/A<p>
4518N/A <span><strong class="command">nsupdate</strong></span> can be run in a local-host only mode
4518N/A using the <code class="option">-l</code> flag. This sets the server address to
4518N/A localhost (disabling the <span><strong class="command">server</strong></span> so that the server
4518N/A address cannot be overridden). Connections to the local server will
4518N/A use a TSIG key found in <code class="filename">/var/run/named/session.key</code>,
4518N/A which is automatically generated by <span><strong class="command">named</strong></span> if any
4518N/A local master zone has set <span><strong class="command">update-policy</strong></span> to
4518N/A <span><strong class="command">local</strong></span>. The location of this key file can be
4518N/A overridden with the <code class="option">-k</code> option.
4518N/A </p>
4518N/A<p>
4518N/A By default, <span><strong class="command">nsupdate</strong></span>
4518N/A uses UDP to send update requests to the name server unless they are too
4518N/A large to fit in a UDP request in which case TCP will be used.
4518N/A The
4518N/A <code class="option">-v</code>
4518N/A option makes
4518N/A <span><strong class="command">nsupdate</strong></span>
4518N/A use a TCP connection.
4518N/A This may be preferable when a batch of update requests is made.
4518N/A </p>
4518N/A<p>
4518N/A The <code class="option">-p</code> sets the default port number to use for
4518N/A connections to a name server. The default is 53.
4518N/A </p>
4518N/A<p>
4518N/A The <code class="option">-t</code> option sets the maximum time an update request
4518N/A can
4518N/A take before it is aborted. The default is 300 seconds. Zero can be
4518N/A used
4518N/A to disable the timeout.
4518N/A </p>
4518N/A<p>
4518N/A The <code class="option">-u</code> option sets the UDP retry interval. The default
4518N/A is
4518N/A 3 seconds. If zero, the interval will be computed from the timeout
4518N/A interval
4518N/A and number of UDP retries.
4518N/A </p>
4518N/A<p>
4518N/A The <code class="option">-r</code> option sets the number of UDP retries. The
4518N/A default is
4518N/A 3. If zero, only one update request will be made.
4518N/A </p>
4518N/A<p>
4518N/A The <code class="option">-R <em class="replaceable"><code>randomdev</code></em></code> option
4518N/A specifies a source of randomness. If the operating system
4518N/A does not provide a <code class="filename">/dev/random</code> or
4518N/A equivalent device, the default source of randomness is keyboard
4518N/A input. <code class="filename">randomdev</code> specifies the name of
4518N/A a character device or file containing random data to be used
4518N/A instead of the default. The special value
4518N/A <code class="filename">keyboard</code> indicates that keyboard input
4518N/A should be used. This option may be specified multiple times.
4518N/A </p>
4518N/A<p>
4518N/A Other types can be entered using "TYPEXXXXX" where "XXXXX" is the
4518N/A decimal value of the type with no leading zeros. The rdata,
4518N/A if present, will be parsed using the UNKNOWN rdata format,
4518N/A (&lt;backslash&gt; &lt;hash&gt; &lt;space&gt; &lt;length&gt;
4518N/A &lt;space&gt; &lt;hexstring&gt;).
4518N/A </p>
4518N/A<p>
4518N/A The <code class="option">-T</code> and <code class="option">-P</code> options print out
4518N/A lists of non-meta types for which the type-specific presentation
4518N/A formats are known. <code class="option">-T</code> prints out the list of
4518N/A IANA-assigned types. <code class="option">-P</code> prints out the list of
4518N/A private types specific to <span><strong class="command">named</strong></span>. These options
4518N/A may be combined. <span><strong class="command">nsupdate</strong></span> will exit after the
4518N/A lists are printed.
4518N/A </p>
4518N/A<p>
4518N/A The -V option causes <span><strong class="command">nsupdate</strong></span> to print the
4518N/A version number and exit.
4518N/A </p>
4518N/A</div>
4518N/A<div class="refsect1" lang="en">
4518N/A<a name="id2685146"></a><h2>INPUT FORMAT</h2>
4518N/A<p><span><strong class="command">nsupdate</strong></span>
4518N/A reads input from
4518N/A <em class="parameter"><code>filename</code></em>
4518N/A or standard input.
4518N/A Each command is supplied on exactly one line of input.
4518N/A Some commands are for administrative purposes.
4518N/A The others are either update instructions or prerequisite checks on the
4518N/A contents of the zone.
4518N/A These checks set conditions that some name or set of
4518N/A resource records (RRset) either exists or is absent from the zone.
4518N/A These conditions must be met if the entire update request is to succeed.
4518N/A Updates will be rejected if the tests for the prerequisite conditions
4518N/A fail.
4518N/A </p>
4518N/A<p>
4518N/A Every update request consists of zero or more prerequisites
4518N/A and zero or more updates.
4518N/A This allows a suitably authenticated update request to proceed if some
4518N/A specified resource records are present or missing from the zone.
4518N/A A blank input line (or the <span><strong class="command">send</strong></span> command)
4518N/A causes the
4518N/A accumulated commands to be sent as one Dynamic DNS update request to the
4518N/A name server.
4518N/A </p>
4518N/A<p>
4518N/A The command formats and their meaning are as follows:
4518N/A </p>
4518N/A<div class="variablelist"><dl>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">server</strong></span>
4518N/A {servername}
4518N/A [port]
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Sends all dynamic update requests to the name server
4518N/A <em class="parameter"><code>servername</code></em>.
4518N/A When no server statement is provided,
4518N/A <span><strong class="command">nsupdate</strong></span>
4518N/A will send updates to the master server of the correct zone.
4518N/A The MNAME field of that zone's SOA record will identify the
4518N/A master
4518N/A server for that zone.
4518N/A <em class="parameter"><code>port</code></em>
4518N/A is the port number on
4518N/A <em class="parameter"><code>servername</code></em>
4518N/A where the dynamic update requests get sent.
4518N/A If no port number is specified, the default DNS port number of
4518N/A 53 is
4518N/A used.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">local</strong></span>
4518N/A {address}
4518N/A [port]
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Sends all dynamic update requests using the local
4518N/A <em class="parameter"><code>address</code></em>.
4518N/A
4518N/A When no local statement is provided,
4518N/A <span><strong class="command">nsupdate</strong></span>
4518N/A will send updates using an address and port chosen by the
4518N/A system.
4518N/A <em class="parameter"><code>port</code></em>
4518N/A can additionally be used to make requests come from a specific
4518N/A port.
4518N/A If no port number is specified, the system will assign one.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">zone</strong></span>
4518N/A {zonename}
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Specifies that all updates are to be made to the zone
4518N/A <em class="parameter"><code>zonename</code></em>.
4518N/A If no
4518N/A <em class="parameter"><code>zone</code></em>
4518N/A statement is provided,
4518N/A <span><strong class="command">nsupdate</strong></span>
4518N/A will attempt determine the correct zone to update based on the
4518N/A rest of the input.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">class</strong></span>
4518N/A {classname}
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Specify the default class.
4518N/A If no <em class="parameter"><code>class</code></em> is specified, the
4518N/A default class is
4518N/A <em class="parameter"><code>IN</code></em>.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">ttl</strong></span>
4518N/A {seconds}
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Specify the default time to live for records to be added.
4518N/A The value <em class="parameter"><code>none</code></em> will clear the default
4518N/A ttl.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">key</strong></span>
4518N/A {name}
4518N/A {secret}
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Specifies that all updates are to be TSIG-signed using the
4518N/A <em class="parameter"><code>keyname</code></em> <em class="parameter"><code>keysecret</code></em> pair.
4518N/A The <span><strong class="command">key</strong></span> command
4518N/A overrides any key specified on the command line via
4518N/A <code class="option">-y</code> or <code class="option">-k</code>.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">gsstsig</strong></span>
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Use GSS-TSIG to sign the updated. This is equivalent to
4518N/A specifying <code class="option">-g</code> on the commandline.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">oldgsstsig</strong></span>
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Use the Windows 2000 version of GSS-TSIG to sign the updated.
4518N/A This is equivalent to specifying <code class="option">-o</code> on the
4518N/A commandline.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">realm</strong></span>
4518N/A {[<span class="optional">realm_name</span>]}
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A When using GSS-TSIG use <em class="parameter"><code>realm_name</code></em> rather
4518N/A than the default realm in <code class="filename">krb5.conf</code>. If no
4518N/A realm is specified the saved realm is cleared.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">[<span class="optional">prereq</span>] nxdomain</strong></span>
4518N/A {domain-name}
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Requires that no resource record of any type exists with name
4518N/A <em class="parameter"><code>domain-name</code></em>.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">[<span class="optional">prereq</span>] yxdomain</strong></span>
4518N/A {domain-name}
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Requires that
4518N/A <em class="parameter"><code>domain-name</code></em>
4518N/A exists (has as at least one resource record, of any type).
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">[<span class="optional">prereq</span>] nxrrset</strong></span>
4518N/A {domain-name}
4518N/A [class]
4518N/A {type}
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A Requires that no resource record exists of the specified
4518N/A <em class="parameter"><code>type</code></em>,
4518N/A <em class="parameter"><code>class</code></em>
4518N/A and
4518N/A <em class="parameter"><code>domain-name</code></em>.
4518N/A If
4518N/A <em class="parameter"><code>class</code></em>
4518N/A is omitted, IN (internet) is assumed.
4518N/A </p></dd>
4518N/A<dt><span class="term">
4518N/A <span><strong class="command">[<span class="optional">prereq</span>] yxrrset</strong></span>
4518N/A {domain-name}
4518N/A [class]
4518N/A {type}
4518N/A </span></dt>
4518N/A<dd><p>
4518N/A This requires that a resource record of the specified
4518N/A <em class="parameter"><code>type</code></em>,
4518N/A <em class="parameter"><code>class</code></em>
4518N/A and
4518N/A <em class="parameter"><code>domain-name</code></em>
4518N/A must exist.
4518N/A If
4518N/A <em class="parameter"><code>class</code></em>
4518N/A is omitted, IN (internet) is assumed.
4518N/A </p></dd>
4518N/A<dt><span class="term">
<span><strong class="command">[<span class="optional">prereq</span>] yxrrset</strong></span>
{domain-name}
[class]
{type}
{data...}
</span></dt>
<dd><p>
The
<em class="parameter"><code>data</code></em>
from each set of prerequisites of this form
sharing a common
<em class="parameter"><code>type</code></em>,
<em class="parameter"><code>class</code></em>,
and
<em class="parameter"><code>domain-name</code></em>
are combined to form a set of RRs. This set of RRs must
exactly match the set of RRs existing in the zone at the
given
<em class="parameter"><code>type</code></em>,
<em class="parameter"><code>class</code></em>,
and
<em class="parameter"><code>domain-name</code></em>.
The
<em class="parameter"><code>data</code></em>
are written in the standard text representation of the resource
record's
RDATA.
</p></dd>
<dt><span class="term">
<span><strong class="command">[<span class="optional">update</span>] del[<span class="optional">ete</span>]</strong></span>
{domain-name}
[ttl]
[class]
[type [data...]]
</span></dt>
<dd><p>
Deletes any resource records named
<em class="parameter"><code>domain-name</code></em>.
If
<em class="parameter"><code>type</code></em>
and
<em class="parameter"><code>data</code></em>
is provided, only matching resource records will be removed.
The internet class is assumed if
<em class="parameter"><code>class</code></em>
is not supplied. The
<em class="parameter"><code>ttl</code></em>
is ignored, and is only allowed for compatibility.
</p></dd>
<dt><span class="term">
<span><strong class="command">[<span class="optional">update</span>] add</strong></span>
{domain-name}
{ttl}
[class]
{type}
{data...}
</span></dt>
<dd><p>
Adds a new resource record with the specified
<em class="parameter"><code>ttl</code></em>,
<em class="parameter"><code>class</code></em>
and
<em class="parameter"><code>data</code></em>.
</p></dd>
<dt><span class="term">
<span><strong class="command">show</strong></span>
</span></dt>
<dd><p>
Displays the current message, containing all of the
prerequisites and
updates specified since the last send.
</p></dd>
<dt><span class="term">
<span><strong class="command">send</strong></span>
</span></dt>
<dd><p>
Sends the current message. This is equivalent to entering a
blank line.
</p></dd>
<dt><span class="term">
<span><strong class="command">answer</strong></span>
</span></dt>
<dd><p>
Displays the answer.
</p></dd>
<dt><span class="term">
<span><strong class="command">debug</strong></span>
</span></dt>
<dd><p>
Turn on debugging.
</p></dd>
<dt><span class="term">
<span><strong class="command">version</strong></span>
</span></dt>
<dd><p>
Print version number.
</p></dd>
<dt><span class="term">
<span><strong class="command">help</strong></span>
</span></dt>
<dd><p>
Print a list of commands.
</p></dd>
</dl></div>
<p>
</p>
<p>
Lines beginning with a semicolon are comments and are ignored.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2686318"></a><h2>EXAMPLES</h2>
<p>
The examples below show how
<span><strong class="command">nsupdate</strong></span>
could be used to insert and delete resource records from the
<span class="type">example.com</span>
zone.
Notice that the input in each example contains a trailing blank line so
that
a group of commands are sent as one dynamic update request to the
master name server for
<span class="type">example.com</span>.
</p>
<pre class="programlisting">
# nsupdate
&gt; update delete oldhost.example.com A
&gt; update add newhost.example.com 86400 A 172.16.1.1
&gt; send
</pre>
<p>
</p>
<p>
Any A records for
<span class="type">oldhost.example.com</span>
are deleted.
And an A record for
<span class="type">newhost.example.com</span>
with IP address 172.16.1.1 is added.
The newly-added record has a 1 day TTL (86400 seconds).
</p>
<pre class="programlisting">
# nsupdate
&gt; prereq nxdomain nickname.example.com
&gt; update add nickname.example.com 86400 CNAME somehost.example.com
&gt; send
</pre>
<p>
</p>
<p>
The prerequisite condition gets the name server to check that there
are no resource records of any type for
<span class="type">nickname.example.com</span>.
If there are, the update request fails.
If this name does not exist, a CNAME for it is added.
This ensures that when the CNAME is added, it cannot conflict with the
long-standing rule in RFC 1034 that a name must not exist as any other
record type if it exists as a CNAME.
(The rule has been updated for DNSSEC in RFC 2535 to allow CNAMEs to have
RRSIG, DNSKEY and NSEC records.)
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2686369"></a><h2>FILES</h2>
<div class="variablelist"><dl>
<dt><span class="term"><code class="constant">/etc/resolv.conf</code></span></dt>
<dd><p>
used to identify default name server
</p></dd>
<dt><span class="term"><code class="constant">/var/run/named/session.key</code></span></dt>
<dd><p>
sets the default TSIG key for use in local-only mode
</p></dd>
<dt><span class="term"><code class="constant">K{name}.+157.+{random}.key</code></span></dt>
<dd><p>
base-64 encoding of HMAC-MD5 key created by
<span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>.
</p></dd>
<dt><span class="term"><code class="constant">K{name}.+157.+{random}.private</code></span></dt>
<dd><p>
base-64 encoding of HMAC-MD5 key created by
<span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>.
</p></dd>
</dl></div>
</div>
<div class="refsect1" lang="en">
<a name="id2686452"></a><h2>SEE ALSO</h2>
<p>
<em class="citetitle">RFC 2136</em>,
<em class="citetitle">RFC 3007</em>,
<em class="citetitle">RFC 2104</em>,
<em class="citetitle">RFC 2845</em>,
<em class="citetitle">RFC 1034</em>,
<em class="citetitle">RFC 2535</em>,
<em class="citetitle">RFC 2931</em>,
<span class="citerefentry"><span class="refentrytitle">named</span>(8)</span>,
<span class="citerefentry"><span class="refentrytitle">ddns-confgen</span>(8)</span>,
<span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2686509"></a><h2>BUGS</h2>
<p>
The TSIG key is redundantly stored in two separate files.
This is a consequence of nsupdate using the DST library
for its cryptographic operations, and may change in future
releases.
</p>
</div>
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