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990d0e893f5b70e735cdf990af66e9ec6e91fa78Tinderbox User - Copyright (C) 2004-2014 Internet Systems Consortium, Inc. ("ISC")
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews - Copyright (C) 2000-2003 Internet Software Consortium.
4a14ce5ba00ab7bc55c99ffdcf59c7a4ab902721Automatic Updater - Permission to use, copy, modify, and/or distribute this software for any
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews - purpose with or without fee is hereby granted, provided that the above
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews - copyright notice and this permission notice appear in all copies.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews - THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews - REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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b46346eb3026ba4bebc093bc93cfe159131e541eTinderbox User<div class="cmdsynopsis"><p><code class="command">dig</code> [@server] [<code class="option">-b <em class="replaceable"><code>address</code></em></code>] [<code class="option">-c <em class="replaceable"><code>class</code></em></code>] [<code class="option">-f <em class="replaceable"><code>filename</code></em></code>] [<code class="option">-k <em class="replaceable"><code>filename</code></em></code>] [<code class="option">-m</code>] [<code class="option">-p <em class="replaceable"><code>port#</code></em></code>] [<code class="option">-q <em class="replaceable"><code>name</code></em></code>] [<code class="option">-t <em class="replaceable"><code>type</code></em></code>] [<code class="option">-v</code>] [<code class="option">-x <em class="replaceable"><code>addr</code></em></code>] [<code class="option">-y <em class="replaceable"><code>[<span class="optional">hmac:</span>]name:key</code></em></code>] [<code class="option">-4</code>] [<code class="option">-6</code>] [name] [type] [class] [queryopt...]</p></div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<div class="cmdsynopsis"><p><code class="command">dig</code> [<code class="option">-h</code>]</p></div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<div class="cmdsynopsis"><p><code class="command">dig</code> [global-queryopt...] [query...]</p></div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<p><span><strong class="command">dig</strong></span>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews (domain information groper) is a flexible tool
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews for interrogating DNS name servers. It performs DNS lookups and
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews displays the answers that are returned from the name server(s) that
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews were queried. Most DNS administrators use <span><strong class="command">dig</strong></span> to
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews troubleshoot DNS problems because of its flexibility, ease of use and
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews clarity of output. Other lookup tools tend to have less functionality
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews than <span><strong class="command">dig</strong></span>.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews Although <span><strong class="command">dig</strong></span> is normally used with
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews command-line
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews arguments, it also has a batch mode of operation for reading lookup
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews requests from a file. A brief summary of its command-line arguments
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews and options is printed when the <code class="option">-h</code> option is given.
d71e2e0c61df16ff37c9934c371a4a60c08974f7Mark Andrews Unlike earlier versions, the BIND 9 implementation of
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <span><strong class="command">dig</strong></span> allows multiple lookups to be issued
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews command line.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews Unless it is told to query a specific name server,
d8620c7234281056fdfd2ee40cf16636b8281092Tinderbox User <span><strong class="command">dig</strong></span> will try each of the servers listed in
03c0efc6892ef2ed17338b2ecbb2c5f23fbad0c9Tinderbox User <code class="filename">/etc/resolv.conf</code>. If no usable server addresses
d8620c7234281056fdfd2ee40cf16636b8281092Tinderbox User are found, <span><strong class="command">dig</strong></span> will send the query to the local
b49958b502ee45022010a0b1bed3968f598895a4Automatic Updater When no command line arguments or options are given,
b49958b502ee45022010a0b1bed3968f598895a4Automatic Updater <span><strong class="command">dig</strong></span> will perform an NS query for "." (the root).
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews It is possible to set per-user defaults for <span><strong class="command">dig</strong></span> via
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <code class="filename">${HOME}/.digrc</code>. This file is read and
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews any options in it
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews are applied before the command line arguments.
b3cbb2f1ad021349e89807f3492df6e4e679cd56Mark Andrews The IN and CH class names overlap with the IN and CH top level
665a24faf6b3711e4012ac02ae5f0981c093ac1eTinderbox User domain names. Either use the <code class="option">-t</code> and
b49958b502ee45022010a0b1bed3968f598895a4Automatic Updater <code class="option">-c</code> options to specify the type and class,
b49958b502ee45022010a0b1bed3968f598895a4Automatic Updater use the <code class="option">-q</code> the specify the domain name, or
b3cbb2f1ad021349e89807f3492df6e4e679cd56Mark Andrews use "IN." and "CH." when looking up these top level domains.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews A typical invocation of <span><strong class="command">dig</strong></span> looks like:
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<pre class="programlisting"> dig @server name type </pre>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="constant">server</code></span></dt>
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User is the name or IP address of the name server to query. This
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User can be an IPv4 address in dotted-decimal notation or an IPv6
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User address in colon-delimited notation. When the supplied
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User <em class="parameter"><code>server</code></em> argument is a hostname,
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User <span><strong class="command">dig</strong></span> resolves that name before querying
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User that name server.
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User If no <em class="parameter"><code>server</code></em> argument is
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User provided, <span><strong class="command">dig</strong></span> consults
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User <code class="filename">/etc/resolv.conf</code>; if an
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User address is found there, it queries the name server at
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User that address. If either of the <code class="option">-4</code> or
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User <code class="option">-6</code> options are in use, then
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User only addresses for the corresponding transport
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User will be tried. If no usable addresses are found,
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User <span><strong class="command">dig</strong></span> will send the query to the
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User local host. The reply from the name server that
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User responds is displayed.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="constant">name</code></span></dt>
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User is the name of the resource record that is to be looked up.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="constant">type</code></span></dt>
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User indicates what type of query is required —
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User ANY, A, MX, SIG, etc.
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User <em class="parameter"><code>type</code></em> can be any valid query
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User <em class="parameter"><code>type</code></em> argument is supplied,
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User <span><strong class="command">dig</strong></span> will perform a lookup for an
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews The <code class="option">-b</code> option sets the source IP address of the query
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews to <em class="parameter"><code>address</code></em>. This must be a valid
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews one of the host's network interfaces or "0.0.0.0" or "::". An optional
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews may be specified by appending "#<port>"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews The default query class (IN for internet) is overridden by the
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <code class="option">-c</code> option. <em class="parameter"><code>class</code></em> is
a1b05dea35aa30b152a47115e18bbe679d3fcf19Mark Andrews class, such as HS for Hesiod records or CH for Chaosnet records.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews The <code class="option">-f</code> option makes <span><strong class="command">dig </strong></span>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews in batch mode by reading a list of lookup requests to process from the
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews file <em class="parameter"><code>filename</code></em>. The file contains a
d71e2e0c61df16ff37c9934c371a4a60c08974f7Mark Andrews queries, one per line. Each entry in the file should be organized in
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews the same way they would be presented as queries to
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <span><strong class="command">dig</strong></span> using the command-line interface.
1c09d68dfd18b6e839c8cd68b78c11b3ccca4160Automatic Updater The <code class="option">-m</code> option enables memory usage debugging.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews If a non-standard port number is to be queried, the
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <code class="option">-p</code> option is used. <em class="parameter"><code>port#</code></em> is
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews the port number that <span><strong class="command">dig</strong></span> will send its
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews instead of the standard DNS port number 53. This option would be used
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews to test a name server that has been configured to listen for queries
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews on a non-standard port number.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews The <code class="option">-4</code> option forces <span><strong class="command">dig</strong></span>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews use IPv4 query transport. The <code class="option">-6</code> option forces
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <span><strong class="command">dig</strong></span> to only use IPv6 query transport.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews The <code class="option">-t</code> option sets the query type to
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <em class="parameter"><code>type</code></em>. It can be any valid query type
f6da30bb5447c23d880b09f601441e70c5313557Mark Andrews supported in BIND 9. The default query type is "A", unless the
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <code class="option">-x</code> option is supplied to indicate a reverse lookup.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews A zone transfer can be requested by specifying a type of AXFR. When
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews an incremental zone transfer (IXFR) is required,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <em class="parameter"><code>type</code></em> is set to <code class="literal">ixfr=N</code>.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews The incremental zone transfer will contain the changes made to the zone
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews since the serial number in the zone's SOA record was
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews The <code class="option">-q</code> option sets the query name to
665a24faf6b3711e4012ac02ae5f0981c093ac1eTinderbox User <em class="parameter"><code>name</code></em>. This is useful to distinguish the
8c9957e63274e6ea44d182703116307b1a65dabbMark Andrews <em class="parameter"><code>name</code></em> from other arguments.
b46346eb3026ba4bebc093bc93cfe159131e541eTinderbox User The <code class="option">-v</code> causes <span><strong class="command">dig</strong></span> to
b46346eb3026ba4bebc093bc93cfe159131e541eTinderbox User print the version number and exit.
d71e2e0c61df16ff37c9934c371a4a60c08974f7Mark Andrews Reverse lookups — mapping addresses to names — are simplified by the
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <code class="option">-x</code> option. <em class="parameter"><code>addr</code></em> is
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews address in dotted-decimal notation, or a colon-delimited IPv6 address.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews When this option is used, there is no need to provide the
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <em class="parameter"><code>name</code></em>, <em class="parameter"><code>class</code></em> and
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <em class="parameter"><code>type</code></em> arguments. <span><strong class="command">dig</strong></span>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews automatically performs a lookup for a name like
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <code class="literal">11.12.13.10.in-addr.arpa</code> and sets the
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews query type and
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews class to PTR and IN respectively. By default, IPv6 addresses are
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews looked up using nibble format under the IP6.ARPA domain.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews To use the older RFC1886 method using the IP6.INT domain
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews specify the <code class="option">-i</code> option. Bit string labels (RFC2874)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews are now experimental and are not attempted.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews To sign the DNS queries sent by <span><strong class="command">dig</strong></span> and
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews responses using transaction signatures (TSIG), specify a TSIG key file
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews using the <code class="option">-k</code> option. You can also specify the TSIG
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews key itself on the command line using the <code class="option">-y</code> option;
7329012471d165cd3dc4180ad2a0a43de91e7f01Mark Andrews <em class="parameter"><code>hmac</code></em> is the type of the TSIG, default HMAC-MD5,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <em class="parameter"><code>name</code></em> is the name of the TSIG key and
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <em class="parameter"><code>key</code></em> is the actual key. The key is a
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews encoded string, typically generated by
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews Caution should be taken when using the <code class="option">-y</code> option on
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews multi-user systems as the key can be visible in the output from
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <span class="citerefentry"><span class="refentrytitle">ps</span>(1)</span>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews or in the shell's history file. When
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews using TSIG authentication with <span><strong class="command">dig</strong></span>, the name
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews server that is queried needs to know the key and algorithm that is
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews being used. In BIND, this is done by providing appropriate
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <span><strong class="command">key</strong></span> and <span><strong class="command">server</strong></span> statements in
d9f0b06dc2bba47e3fe63afdf41c638d3517ceffTinderbox User<a name="id2666441"></a><h2>QUERY OPTIONS</h2>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<p><span><strong class="command">dig</strong></span>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews provides a number of query options which affect
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews the way in which lookups are made and the results displayed. Some of
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews these set or reset flag bits in the query header, some determine which
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews sections of the answer get printed, and others determine the timeout
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews and retry strategies.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews Each query option is identified by a keyword preceded by a plus sign
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews (<code class="literal">+</code>). Some keywords set or reset an
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews option. These may be preceded
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews by the string <code class="literal">no</code> to negate the meaning of
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews that keyword. Other
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews keywords assign values to options like the timeout interval. They
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews have the form <code class="option">+keyword=value</code>.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews The query options are:
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]aaflag</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User A synonym for <em class="parameter"><code>+[no]aaonly</code></em>.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="option">+[no]aaonly</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Sets the "aa" flag in the query.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]additional</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Display [do not display] the additional section of a
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User reply. The default is to display it.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="option">+[no]adflag</code></span></dt>
370c55dfcdc559b8761ef3eb4921498580caf14cAutomatic Updater Set [do not set] the AD (authentic data) bit in the
370c55dfcdc559b8761ef3eb4921498580caf14cAutomatic Updater query. This requests the server to return whether
370c55dfcdc559b8761ef3eb4921498580caf14cAutomatic Updater all of the answer and authority sections have all
370c55dfcdc559b8761ef3eb4921498580caf14cAutomatic Updater been validated as secure according to the security
370c55dfcdc559b8761ef3eb4921498580caf14cAutomatic Updater policy of the server. AD=1 indicates that all records
370c55dfcdc559b8761ef3eb4921498580caf14cAutomatic Updater have been validated as secure and the answer is not
370c55dfcdc559b8761ef3eb4921498580caf14cAutomatic Updater from a OPT-OUT range. AD=0 indicate that some part
77dccf2a5d9327d16b4374a135cdb99bdd48620eAutomatic Updater of the answer was insecure or not validated. This
77dccf2a5d9327d16b4374a135cdb99bdd48620eAutomatic Updater bit is set by default.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]all</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Set or clear all display flags.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]answer</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Display [do not display] the answer section of a
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User reply. The default is to display it.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]authority</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Display [do not display] the authority section of a
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User reply. The default is to display it.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]besteffort</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Attempt to display the contents of messages which are
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User malformed. The default is to not display malformed
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+bufsize=B</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Set the UDP message buffer size advertised using EDNS0
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User to <em class="parameter"><code>B</code></em> bytes. The maximum and
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User minimum sizes of this buffer are 65535 and 0 respectively.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Values outside this range are rounded up or down
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User appropriately. Values other than zero will cause a
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User EDNS query to be sent.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="option">+[no]cdflag</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Set [do not set] the CD (checking disabled) bit in
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User the query. This requests the server to not perform
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User DNSSEC validation of responses.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="option">+[no]cl</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Display [do not display] the CLASS when printing the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]cmd</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Toggles the printing of the initial comment in the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User output identifying the version of <span><strong class="command">dig</strong></span>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User and the query options that have been applied. This
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User comment is printed by default.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]comments</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Toggle the display of comment lines in the output.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User The default is to print comments.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]crypto</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Toggle the display of cryptographic fields in DNSSEC
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User records. The contents of these field are unnecessary
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User to debug most DNSSEC validation failures and removing
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User them makes it easier to see the common failures. The
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User default is to display the fields. When omitted they
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User are replaced by the string "[omitted]" or in the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User DNSKEY case the key id is displayed as the replacement,
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User e.g. "[ key id = value ]".
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]defname</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Deprecated, treated as a synonym for
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <em class="parameter"><code>+[no]search</code></em>
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User<dt><span class="term"><code class="option">+[no]dnssec</code></span></dt>
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User Requests DNSSEC records be sent by setting the DNSSEC
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User OK bit (DO) in the OPT record in the additional section
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User of the query.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+domain=somename</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Set the search list to contain the single domain
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <em class="parameter"><code>somename</code></em>, as if specified in
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User a <span><strong class="command">domain</strong></span> directive in
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <code class="filename">/etc/resolv.conf</code>, and enable
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User search list processing as if the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <em class="parameter"><code>+search</code></em> option were given.
d9f0b06dc2bba47e3fe63afdf41c638d3517ceffTinderbox User<dt><span class="term"><code class="option">+dscp=value</code></span></dt>
d9f0b06dc2bba47e3fe63afdf41c638d3517ceffTinderbox User Set the DSCP code point to be used when sending the
d9f0b06dc2bba47e3fe63afdf41c638d3517ceffTinderbox User query. Valid DSCP code points are in the range
d9f0b06dc2bba47e3fe63afdf41c638d3517ceffTinderbox User [0..63]. By default no code point is explictly set.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]edns[=#]</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Specify the EDNS version to query with. Valid values
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User are 0 to 255. Setting the EDNS version will cause
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User a EDNS query to be sent. <code class="option">+noedns</code>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User clears the remembered EDNS version. EDNS is set to
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User 0 by default.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]ednsopt[=code[:value]]</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Specify EDNS option with code point <code class="option">code</code>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User and optionally payload of <code class="option">value</code> as a
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User hexadecimal string. <code class="option">+noednsopt</code>
b90c4f0646e61b6cc82bde5a93e400e1015974b8Tinderbox User clears the EDNS options to be sent.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]expire</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Send an EDNS Expire option.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]fail</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Do not try the next server if you receive a SERVFAIL.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User The default is to not try the next server which is
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User the reverse of normal stub resolver behavior.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]identify</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Show [or do not show] the IP address and port number
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User that supplied the answer when the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <em class="parameter"><code>+short</code></em> option is enabled. If
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User short form answers are requested, the default is not
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User to show the source address and port number of the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User server that provided the answer.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]ignore</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Ignore truncation in UDP responses instead of retrying
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User with TCP. By default, TCP retries are performed.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]keepopen</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Keep the TCP socket open between queries and reuse
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User it rather than creating a new TCP socket for each
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User lookup. The default is <code class="option">+nokeepopen</code>.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]multiline</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Print records like the SOA records in a verbose
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User multi-line format with human-readable comments. The
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User default is to print each record on a single line, to
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User facilitate machine parsing of the <span><strong class="command">dig</strong></span>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+ndots=D</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Set the number of dots that have to appear in
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <em class="parameter"><code>name</code></em> to <em class="parameter"><code>D</code></em>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User for it to be considered absolute. The default value
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User is that defined using the ndots statement in
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <code class="filename">/etc/resolv.conf</code>, or 1 if no
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User ndots statement is present. Names with fewer dots
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User are interpreted as relative names and will be searched
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User for in the domains listed in the <code class="option">search</code>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User or <code class="option">domain</code> directive in
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <code class="filename">/etc/resolv.conf</code>.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]nsid</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Include an EDNS name server ID request when sending
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]nssearch</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User When this option is set, <span><strong class="command">dig</strong></span>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User attempts to find the authoritative name servers for
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User the zone containing the name being looked up and
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User display the SOA record that each name server has for
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]onesoa</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Print only one (starting) SOA record when performing
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User an AXFR. The default is to print both the starting
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User and ending SOA records.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]qr</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Print [do not print] the query as it is sent. By
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User default, the query is not printed.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]question</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Print [do not print] the question section of a query
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User when an answer is returned. The default is to print
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User the question section as a comment.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="option">+[no]recurse</code></span></dt>
77dccf2a5d9327d16b4374a135cdb99bdd48620eAutomatic Updater Toggle the setting of the RD (recursion desired) bit
77dccf2a5d9327d16b4374a135cdb99bdd48620eAutomatic Updater in the query. This bit is set by default, which means
77dccf2a5d9327d16b4374a135cdb99bdd48620eAutomatic Updater <span><strong class="command">dig</strong></span> normally sends recursive
77dccf2a5d9327d16b4374a135cdb99bdd48620eAutomatic Updater queries. Recursion is automatically disabled when
77dccf2a5d9327d16b4374a135cdb99bdd48620eAutomatic Updater the <em class="parameter"><code>+nssearch</code></em> or
77dccf2a5d9327d16b4374a135cdb99bdd48620eAutomatic Updater <em class="parameter"><code>+trace</code></em> query options are used.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+retry=T</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Sets the number of times to retry UDP queries to
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User server to <em class="parameter"><code>T</code></em> instead of the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User default, 2. Unlike <em class="parameter"><code>+tries</code></em>,
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User this does not include the initial query.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]rrcomments</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Toggle the display of per-record comments in the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User output (for example, human-readable key information
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User about DNSKEY records). The default is not to print
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User record comments unless multiline mode is active.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]search</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Use [do not use] the search list defined by the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User searchlist or domain directive in
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <code class="filename">resolv.conf</code> (if any). The search
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User list is not used by default.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]short</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Provide a terse answer. The default is to print the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User answer in a verbose form.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]showsearch</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Perform [do not perform] a search showing intermediate
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]sigchase</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Chase DNSSEC signature chains. Requires dig be
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User compiled with -DDIG_SIGCHASE.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]sit[<span class="optional">=####</span>]</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Send a Source Identity Token EDNS option, with optional
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User value. Replaying a SIT from a previous response will
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User allow the server to identify a previous client. The
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User default is <code class="option">+nosit</code>. Currently using
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User experimental value 65001 for the option code.
be6c1c506161e6f45fcff5d0425f78801bc267c1Automatic Updater<dt><span class="term"><code class="option">+split=W</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Split long hex- or base64-formatted fields in resource
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User records into chunks of <em class="parameter"><code>W</code></em>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User characters (where <em class="parameter"><code>W</code></em> is rounded
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User up to the nearest multiple of 4).
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <em class="parameter"><code>+nosplit</code></em> or
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <em class="parameter"><code>+split=0</code></em> causes fields not to
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User be split at all. The default is 56 characters, or
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User 44 characters when multiline mode is active.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="option">+[no]stats</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User This query option toggles the printing of statistics:
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User when the query was made, the size of the reply and
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User so on. The default behavior is to print the query
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]subnet=addr/prefix</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Send an EDNS Client Subnet option with the speciifed
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User IP address or network prefix.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]tcp</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Use [do not use] TCP when querying name servers. The
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User default behavior is to use UDP unless an
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <code class="literal">ixfr=N</code> query is requested, in which
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User case the default is TCP. AXFR queries always use
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="option">+time=T</code></span></dt>
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User Sets the timeout for a query to
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User <em class="parameter"><code>T</code></em> seconds. The default
d71e2e0c61df16ff37c9934c371a4a60c08974f7Mark Andrews timeout is 5 seconds.
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User An attempt to set <em class="parameter"><code>T</code></em> to less
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User than 1 will result
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User in a query timeout of 1 second being applied.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]topdown</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User When chasing DNSSEC signature chains perform a top-down
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User validation. Requires dig be compiled with -DDIG_SIGCHASE.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]trace</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Toggle tracing of the delegation path from the root
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User name servers for the name being looked up. Tracing
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User is disabled by default. When tracing is enabled,
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <span><strong class="command">dig</strong></span> makes iterative queries to
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User resolve the name being looked up. It will follow
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User referrals from the root servers, showing the answer
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User from each server that was used to resolve the lookup.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <span><strong class="command">+dnssec</strong></span> is also set when +trace
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User is set to better emulate the default queries from a
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+tries=T</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Sets the number of times to try UDP queries to server
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User to <em class="parameter"><code>T</code></em> instead of the default,
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User 3. If <em class="parameter"><code>T</code></em> is less than or equal
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User to zero, the number of tries is silently rounded up
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="term"><code class="option">+trusted-key=####</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Specifies a file containing trusted keys to be used
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User with <code class="option">+sigchase</code>. Each DNSKEY record
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User must be on its own line.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User If not specified, <span><strong class="command">dig</strong></span> will look
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User for <code class="filename">/etc/trusted-key.key</code> then
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User <code class="filename">trusted-key.key</code> in the current
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Requires dig be compiled with -DDIG_SIGCHASE.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]ttlid</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Display [do not display] the TTL when printing the
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]ttlunits</code></span></dt>
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User Display [do not display] the TTL in friendly human-readable
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User time units of "s", "m", "h", "d", and "w", representing
6bcac4b58d16ee91184a72bd4ff05c41538fd932Tinderbox User seconds, minutes, hours, days and weeks. Implies +ttlid.
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User<dt><span class="term"><code class="option">+[no]vc</code></span></dt>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User Use [do not use] TCP when querying name servers. This
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User alternate syntax to <em class="parameter"><code>+[no]tcp</code></em>
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User is provided for backwards compatibility. The "vc"
8e16b3078757ba3010c24aef805e9e29ed19518bTinderbox User stands for "virtual circuit".
d9f0b06dc2bba47e3fe63afdf41c638d3517ceffTinderbox User<a name="id2667655"></a><h2>MULTIPLE QUERIES</h2>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews The BIND 9 implementation of <span><strong class="command">dig </strong></span>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews specifying multiple queries on the command line (in addition to
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews supporting the <code class="option">-f</code> batch file option). Each of those
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews queries can be supplied with its own set of flags, options and query
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews In this case, each <em class="parameter"><code>query</code></em> argument
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews represent an
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews individual query in the command-line syntax described above. Each
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews consists of any of the standard options and flags, the name to be
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews looked up, an optional query type and class and any query options that
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews should be applied to that query.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews A global set of query options, which should be applied to all queries,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews can also be supplied. These global query options must precede the
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews first tuple of name, class, type, options, flags, and query options
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews supplied on the command line. Any global query options (except
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews the <code class="option">+[no]cmd</code> option) can be
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews overridden by a query-specific set of query options. For example:
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewsdig +qr www.isc.org any -x 127.0.0.1 isc.org ns +noqr
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews shows how <span><strong class="command">dig</strong></span> could be used from the
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews command line
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews to make three lookups: an ANY query for <code class="literal">www.isc.org</code>, a
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews reverse lookup of 127.0.0.1 and a query for the NS records of
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews A global query option of <em class="parameter"><code>+qr</code></em> is
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews that <span><strong class="command">dig</strong></span> shows the initial query it made
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews lookup. The final query has a local query option of
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <em class="parameter"><code>+noqr</code></em> which means that <span><strong class="command">dig</strong></span>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews will not print the initial query when it looks up the NS records for
057cafaa3df7be7a6dcca71fbaf8fb498fd83518Mark Andrews If <span><strong class="command">dig</strong></span> has been built with IDN (internationalized
057cafaa3df7be7a6dcca71fbaf8fb498fd83518Mark Andrews domain name) support, it can accept and display non-ASCII domain names.
057cafaa3df7be7a6dcca71fbaf8fb498fd83518Mark Andrews <span><strong class="command">dig</strong></span> appropriately converts character encoding of
057cafaa3df7be7a6dcca71fbaf8fb498fd83518Mark Andrews domain name before sending a request to DNS server or displaying a
057cafaa3df7be7a6dcca71fbaf8fb498fd83518Mark Andrews reply from the server.
057cafaa3df7be7a6dcca71fbaf8fb498fd83518Mark Andrews If you'd like to turn off the IDN support for some reason, defines
057cafaa3df7be7a6dcca71fbaf8fb498fd83518Mark Andrews the <code class="envar">IDN_DISABLE</code> environment variable.
057cafaa3df7be7a6dcca71fbaf8fb498fd83518Mark Andrews The IDN support is disabled if the variable is set when
057cafaa3df7be7a6dcca71fbaf8fb498fd83518Mark Andrews <span><strong class="command">dig</strong></span> runs.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<p><code class="filename">/etc/resolv.conf</code>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<p><span class="citerefentry"><span class="refentrytitle">host</span>(1)</span>,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <span class="citerefentry"><span class="refentrytitle">named</span>(8)</span>,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews There are probably too many query options.
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