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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 18:37:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-05 18:37:14 +0000
commitea648e70a989cca190cd7403fe892fd2dcc290b4 (patch)
treee2b6b1c647da68b0d4d66082835e256eb30970e8 /bin/tools/mdig.html
parentInitial commit. (diff)
downloadbind9-upstream.tar.xz
bind9-upstream.zip
Adding upstream version 1:9.11.5.P4+dfsg.upstream/1%9.11.5.P4+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<!--
+ - Copyright (C) 2015-2019 Internet Systems Consortium, Inc. ("ISC")
+ -
+ - This Source Code Form is subject to the terms of the Mozilla Public
+ - License, v. 2.0. If a copy of the MPL was not distributed with this
+ - file, You can obtain one at http://mozilla.org/MPL/2.0/.
+-->
+<html lang="en">
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+<title>mdig</title>
+<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
+</head>
+<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry">
+<a name="man.mdig"></a><div class="titlepage"></div>
+
+
+
+ <div class="refnamediv">
+<h2>Name</h2>
+<p>
+ <span class="application">mdig</span>
+ &#8212; DNS pipelined lookup utility
+ </p>
+</div>
+
+
+
+ <div class="refsynopsisdiv">
+<h2>Synopsis</h2>
+ <div class="cmdsynopsis"><p>
+ <code class="command">mdig</code>
+ {@server}
+ [<code class="option">-f <em class="replaceable"><code>filename</code></em></code>]
+ [<code class="option">-h</code>]
+ [<code class="option">-v</code>]
+ [
+ [<code class="option">-4</code>]
+ | [<code class="option">-6</code>]
+ ]
+ [<code class="option">-m</code>]
+ [<code class="option">-b <em class="replaceable"><code>address</code></em></code>]
+ [<code class="option">-p <em class="replaceable"><code>port#</code></em></code>]
+ [<code class="option">-c <em class="replaceable"><code>class</code></em></code>]
+ [<code class="option">-t <em class="replaceable"><code>type</code></em></code>]
+ [<code class="option">-i</code>]
+ [<code class="option">-x <em class="replaceable"><code>addr</code></em></code>]
+ [plusopt...]
+ </p></div>
+
+ <div class="cmdsynopsis"><p>
+ <code class="command">mdig</code>
+ {-h}
+ </p></div>
+
+ <div class="cmdsynopsis"><p>
+ <code class="command">mdig</code>
+ [@server]
+ {global-opt...}
+ {
+ {local-opt...}
+ {query}
+ ...}
+ </p></div>
+ </div>
+
+ <div class="refsection">
+<a name="id-1.7"></a><h2>DESCRIPTION</h2>
+
+ <p><span class="command"><strong>mdig</strong></span>
+ is a multiple/pipelined query version of <span class="command"><strong>dig</strong></span>:
+ instead of waiting for a response after sending each query,
+ it begins by sending all queries. Responses are displayed in
+ the order in which they are received, not in the order the
+ corresponding queries were sent.
+ </p>
+
+ <p>
+ <span class="command"><strong>mdig</strong></span> options are a subset of the
+ <span class="command"><strong>dig</strong></span> options, and are divided into "anywhere
+ options" which can occur anywhere, "global options" which must
+ occur before the query name (or they are ignored with a warning),
+ and "local options" which apply to the next query on the command
+ line.
+ </p>
+
+ <p>
+ The {@server} option is a mandatory global
+ option. It is the name or IP address of the name server to query.
+ (Unlike <span class="command"><strong>dig</strong></span>, this value is not retrieved from
+ <code class="filename">/etc/resolv.conf</code>.) It can be an IPv4 address
+ in dotted-decimal notation, an IPv6 address in colon-delimited
+ notation, or a hostname. When the supplied
+ <em class="parameter"><code>server</code></em> argument is a hostname,
+ <span class="command"><strong>mdig</strong></span> resolves that name before querying
+ the name server.
+ </p>
+
+ <p><span class="command"><strong>mdig</strong></span>
+ provides a number of query options which affect
+ the way in which lookups are made and the results displayed. Some of
+ these set or reset flag bits in the query header, some determine which
+ sections of the answer get printed, and others determine the timeout
+ and retry strategies.
+ </p>
+
+ <p>
+ Each query option is identified by a keyword preceded by a plus
+ sign (<code class="literal">+</code>). Some keywords set or reset an
+ option. These may be preceded by the string <code class="literal">no</code>
+ to negate the meaning of that keyword. Other keywords assign
+ values to options like the timeout interval. They have the
+ form <code class="option">+keyword=value</code>.
+ </p>
+ </div>
+
+ <div class="refsection">
+<a name="id-1.8"></a><h2>ANYWHERE OPTIONS</h2>
+
+
+ <p>
+ The <code class="option">-f</code> option makes <span class="command"><strong>mdig</strong></span>
+ operate in batch mode by reading a list of lookup requests to
+ process from the file <em class="parameter"><code>filename</code></em>. The file
+ contains a number of queries, one per line. Each entry in the
+ file should be organized in the same way they would be presented
+ as queries to <span class="command"><strong>mdig</strong></span> using the command-line interface.
+ </p>
+
+ <p>
+ The <code class="option">-h</code> causes <span class="command"><strong>mdig</strong></span> to
+ print the detailed help with the full list of options and exit.
+ </p>
+
+ <p>
+ The <code class="option">-v</code> causes <span class="command"><strong>mdig</strong></span> to
+ print the version number and exit.
+ </p>
+ </div>
+
+ <div class="refsection">
+<a name="id-1.9"></a><h2>GLOBAL OPTIONS</h2>
+
+
+ <p>
+ The <code class="option">-4</code> option forces <span class="command"><strong>mdig</strong></span> to
+ only use IPv4 query transport.
+ </p>
+
+ <p>
+ The <code class="option">-6</code> option forces <span class="command"><strong>mdig</strong></span> to
+ only use IPv6 query transport.
+ </p>
+
+ <p>
+ The <code class="option">-b</code> option sets the source IP address of the
+ query to <em class="parameter"><code>address</code></em>. This must be a valid
+ address on one of the host's network interfaces or "0.0.0.0" or
+ "::". An optional port may be specified by appending
+ "#&lt;port&gt;"
+ </p>
+
+ <p>
+ The <code class="option">-m</code> option enables memory usage debugging.
+ </p>
+
+ <p>
+ The <code class="option">-p</code> option is used when a non-standard port
+ number is to be queried.
+ <em class="parameter"><code>port#</code></em> is the port number
+ that <span class="command"><strong>mdig</strong></span> will send its queries instead of
+ the standard DNS port number 53. This option would be used to
+ test a name server that has been configured to listen for
+ queries on a non-standard port number.
+ </p>
+
+ <p>
+ The global query options are:
+ </p>
+<div class="variablelist"><dl class="variablelist">
+<dt><span class="term"><code class="option">+[no]additional</code></span></dt>
+<dd>
+ <p>
+ Display [do not display] the additional section of a
+ reply. The default is to display it.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]all</code></span></dt>
+<dd>
+ <p>
+ Set or clear all display flags.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]answer</code></span></dt>
+<dd>
+ <p>
+ Display [do not display] the answer section of a
+ reply. The default is to display it.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]authority</code></span></dt>
+<dd>
+ <p>
+ Display [do not display] the authority section of a
+ reply. The default is to display it.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]besteffort</code></span></dt>
+<dd>
+ <p>
+ Attempt to display the contents of messages which are
+ malformed. The default is to not display malformed
+ answers.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]cl</code></span></dt>
+<dd>
+ <p>
+ Display [do not display] the CLASS when printing the
+ record.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]comments</code></span></dt>
+<dd>
+ <p>
+ Toggle the display of comment lines in the output.
+ The default is to print comments.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]continue</code></span></dt>
+<dd>
+ <p>
+ Continue on errors (e.g. timeouts).
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]crypto</code></span></dt>
+<dd>
+ <p>
+ Toggle the display of cryptographic fields in DNSSEC
+ records. The contents of these field are unnecessary
+ to debug most DNSSEC validation failures and removing
+ them makes it easier to see the common failures. The
+ default is to display the fields. When omitted they
+ are replaced by the string "[omitted]" or in the
+ DNSKEY case the key id is displayed as the replacement,
+ e.g. "[ key id = value ]".
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+dscp[=value]</code></span></dt>
+<dd>
+ <p>
+ Set the DSCP code point to be used when sending the
+ query. Valid DSCP code points are in the range
+ [0..63]. By default no code point is explicitly set.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]multiline</code></span></dt>
+<dd>
+ <p>
+ Print records like the SOA records in a verbose
+ multi-line format with human-readable comments. The
+ default is to print each record on a single line, to
+ facilitate machine parsing of the <span class="command"><strong>mdig</strong></span>
+ output.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]question</code></span></dt>
+<dd>
+ <p>
+ Print [do not print] the question section of a query
+ when an answer is returned. The default is to print
+ the question section as a comment.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]rrcomments</code></span></dt>
+<dd>
+ <p>
+ Toggle the display of per-record comments in the
+ output (for example, human-readable key information
+ about DNSKEY records). The default is not to print
+ record comments unless multiline mode is active.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]short</code></span></dt>
+<dd>
+ <p>
+ Provide a terse answer. The default is to print the
+ answer in a verbose form.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+split=W</code></span></dt>
+<dd>
+ <p>
+ Split long hex- or base64-formatted fields in resource
+ records into chunks of <em class="parameter"><code>W</code></em>
+ characters (where <em class="parameter"><code>W</code></em> is rounded
+ up to the nearest multiple of 4).
+ <em class="parameter"><code>+nosplit</code></em> or
+ <em class="parameter"><code>+split=0</code></em> causes fields not to
+ be split at all. The default is 56 characters, or
+ 44 characters when multiline mode is active.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]tcp</code></span></dt>
+<dd>
+ <p>
+ Use [do not use] TCP when querying name servers. The
+ default behavior is to use UDP.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]ttlid</code></span></dt>
+<dd>
+ <p>
+ Display [do not display] the TTL when printing the
+ record.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]ttlunits</code></span></dt>
+<dd>
+ <p>
+ Display [do not display] the TTL in friendly human-readable
+ time units of "s", "m", "h", "d", and "w", representing
+ seconds, minutes, hours, days and weeks. Implies +ttlid.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]vc</code></span></dt>
+<dd>
+ <p>
+ Use [do not use] TCP when querying name servers. This
+ alternate syntax to <em class="parameter"><code>+[no]tcp</code></em>
+ is provided for backwards compatibility. The "vc"
+ stands for "virtual circuit".
+ </p>
+ </dd>
+</dl></div>
+<p>
+
+ </p>
+ </div>
+
+ <div class="refsection">
+<a name="id-1.10"></a><h2>LOCAL OPTIONS</h2>
+
+
+ <p>
+ The <code class="option">-c</code> option sets the query class to
+ <em class="parameter"><code>class</code></em>. It can be any valid query class
+ which is supported in BIND 9. The default query class is "IN".
+ </p>
+
+ <p>
+ The <code class="option">-t</code> option sets the query type to
+ <em class="parameter"><code>type</code></em>. It can be any valid query type
+ which is supported in BIND 9. The default query type is "A",
+ unless the <code class="option">-x</code> option is supplied to indicate
+ a reverse lookup with the "PTR" query type.
+ </p>
+
+ <p>
+ The <code class="option">-i</code> option sets the reverse domain for
+ IPv6 addresses to IP6.INT.
+ </p>
+
+ <p>
+ Reverse lookups &#8212; mapping addresses to names &#8212; are
+ simplified by the <code class="option">-x</code> option.
+ <em class="parameter"><code>addr</code></em> is an IPv4
+ address in dotted-decimal notation, or a colon-delimited IPv6 address.
+ <span class="command"><strong>mdig</strong></span> automatically performs a lookup for a
+ query name like <code class="literal">11.12.13.10.in-addr.arpa</code> and
+ sets the query type and class to PTR and IN respectively.
+ By default, IPv6 addresses are looked up using nibble format
+ under the IP6.ARPA domain. To use the older RFC1886 method
+ using the IP6.INT domain specify the <code class="option">-i</code> option.
+ </p>
+
+ <p>
+ The local query options are:
+ </p>
+<div class="variablelist"><dl class="variablelist">
+<dt><span class="term"><code class="option">+[no]aaflag</code></span></dt>
+<dd>
+ <p>
+ A synonym for <em class="parameter"><code>+[no]aaonly</code></em>.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]aaonly</code></span></dt>
+<dd>
+ <p>
+ Sets the "aa" flag in the query.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]adflag</code></span></dt>
+<dd>
+ <p>
+ Set [do not set] the AD (authentic data) bit in the
+ query. This requests the server to return whether
+ all of the answer and authority sections have all
+ been validated as secure according to the security
+ policy of the server. AD=1 indicates that all records
+ have been validated as secure and the answer is not
+ from a OPT-OUT range. AD=0 indicate that some part
+ of the answer was insecure or not validated. This
+ bit is set by default.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+bufsize=B</code></span></dt>
+<dd>
+ <p>
+ Set the UDP message buffer size advertised using EDNS0
+ to <em class="parameter"><code>B</code></em> bytes. The maximum and
+ minimum sizes of this buffer are 65535 and 0 respectively.
+ Values outside this range are rounded up or down
+ appropriately. Values other than zero will cause a
+ EDNS query to be sent.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]cdflag</code></span></dt>
+<dd>
+ <p>
+ Set [do not set] the CD (checking disabled) bit in
+ the query. This requests the server to not perform
+ DNSSEC validation of responses.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]cookie[<span class="optional">=####</span>]</code></span></dt>
+<dd>
+ <p>
+ Send a COOKIE EDNS option, with optional value.
+ Replaying a COOKIE from a previous response will allow
+ the server to identify a previous client. The default
+ is <code class="option">+nocookie</code>.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]dnssec</code></span></dt>
+<dd>
+ <p>
+ Requests DNSSEC records be sent by setting the DNSSEC
+ OK bit (DO) in the OPT record in the additional section
+ of the query.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]edns[=#]</code></span></dt>
+<dd>
+ <p>
+ Specify the EDNS version to query with. Valid values
+ are 0 to 255. Setting the EDNS version will cause
+ a EDNS query to be sent. <code class="option">+noedns</code>
+ clears the remembered EDNS version. EDNS is set to
+ 0 by default.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]ednsflags[=#]</code></span></dt>
+<dd>
+ <p>
+ Set the must-be-zero EDNS flags bits (Z bits) to the
+ specified value. Decimal, hex and octal encodings are
+ accepted. Setting a named flag (e.g. DO) will silently be
+ ignored. By default, no Z bits are set.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]ednsopt[=code[:value]]</code></span></dt>
+<dd>
+ <p>
+ Specify EDNS option with code point <code class="option">code</code>
+ and optionally payload of <code class="option">value</code> as a
+ hexadecimal string. <code class="option">+noednsopt</code>
+ clears the EDNS options to be sent.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]expire</code></span></dt>
+<dd>
+ <p>
+ Send an EDNS Expire option.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]nsid</code></span></dt>
+<dd>
+ <p>
+ Include an EDNS name server ID request when sending
+ a query.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]recurse</code></span></dt>
+<dd>
+ <p>
+ Toggle the setting of the RD (recursion desired) bit
+ in the query. This bit is set by default, which means
+ <span class="command"><strong>mdig</strong></span> normally sends recursive
+ queries.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+retry=T</code></span></dt>
+<dd>
+ <p>
+ Sets the number of times to retry UDP queries to
+ server to <em class="parameter"><code>T</code></em> instead of the
+ default, 2. Unlike <em class="parameter"><code>+tries</code></em>,
+ this does not include the initial query.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]subnet=addr[/prefix-length]</code></span></dt>
+<dd>
+ <p>
+ Send (don't send) an EDNS Client Subnet option with the
+ specified IP address or network prefix.
+ </p>
+ <p>
+ <span class="command"><strong>mdig +subnet=0.0.0.0/0</strong></span>, or simply
+ <span class="command"><strong>mdig +subnet=0</strong></span> for short, sends an EDNS
+ client-subnet option with an empty address and a source
+ prefix-length of zero, which signals a resolver that
+ the client's address information must
+ <span class="emphasis"><em>not</em></span> be used when resolving
+ this query.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+timeout=T</code></span></dt>
+<dd>
+ <p>
+ Sets the timeout for a query to
+ <em class="parameter"><code>T</code></em> seconds. The default
+ timeout is 5 seconds for UDP transport and 10 for TCP.
+ An attempt to set <em class="parameter"><code>T</code></em> to less
+ than 1 will result
+ in a query timeout of 1 second being applied.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+tries=T</code></span></dt>
+<dd>
+ <p>
+ Sets the number of times to try UDP queries to server
+ to <em class="parameter"><code>T</code></em> instead of the default,
+ 3. If <em class="parameter"><code>T</code></em> is less than or equal
+ to zero, the number of tries is silently rounded up
+ to 1.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+udptimeout=T</code></span></dt>
+<dd>
+ <p>
+ Sets the timeout between UDP query retries.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]unknownformat</code></span></dt>
+<dd>
+ <p>
+ Print all RDATA in unknown RR type presentation format
+ (RFC 3597). The default is to print RDATA for known types
+ in the type's presentation format.
+ </p>
+ </dd>
+<dt><span class="term"><code class="option">+[no]zflag</code></span></dt>
+<dd>
+ <p>
+ Set [do not set] the last unassigned DNS header flag in a
+ DNS query. This flag is off by default.
+ </p>
+ </dd>
+</dl></div>
+<p>
+
+ </p>
+ </div>
+
+ <div class="refsection">
+<a name="id-1.11"></a><h2>SEE ALSO</h2>
+
+ <p><span class="citerefentry">
+ <span class="refentrytitle">dig</span>(1)
+ </span>,
+ <em class="citetitle">RFC1035</em>.
+ </p>
+ </div>
+</div></body>
+</html>