man/resolved.conf.xml

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   3 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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   9   Copyright 2014 Tom Gundersen
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  24
  25 <refentry id="resolved.conf" conditional='ENABLE_RESOLVED'
  26           xmlns:xi="http://www.w3.org/2001/XInclude">
  27         <refentryinfo>
  28                 <title>resolved.conf</title>
  29                 <productname>systemd</productname>
  30
  31                 <authorgroup>
  32                         <author>
  33                                 <contrib>Developer</contrib>
  34                                 <firstname>Tom</firstname>
  35                                 <surname>Gundersen</surname>
  36                                 <email>teg@jklm.no</email>
  37                         </author>
  38                 </authorgroup>
  39         </refentryinfo>
  40
  41         <refmeta>
  42                 <refentrytitle>resolved.conf</refentrytitle>
  43                 <manvolnum>5</manvolnum>
  44         </refmeta>
  45
  46         <refnamediv>
  47                 <refname>resolved.conf</refname>
  48                 <refname>resolved.conf.d</refname>
  49                 <refpurpose>Network Name Resolution configuration files</refpurpose>
  50         </refnamediv>
  51
  52         <refsynopsisdiv>
  53                 <para><filename>/etc/systemd/resolved.conf</filename></para>
  54                 <para><filename>/etc/systemd/resolved.conf.d/*.conf</filename></para>
  55                 <para><filename>/run/systemd/resolved.conf.d/*.conf</filename></para>
  56                 <para><filename>/usr/lib/systemd/resolved.conf.d/*.conf</filename></para>
  57         </refsynopsisdiv>
  58
  59         <refsect1>
  60                 <title>Description</title>
  61
  62                 <para>These configuration files control local DNS and LLMNR
  63                 name resolving.</para>
  64
  65         </refsect1>
  66
  67         <xi:include href="standard-conf.xml" xpointer="confd" />
  68         <xi:include href="standard-conf.xml" xpointer="conf" />
  69
  70         <refsect1>
  71                 <title>Options</title>
  72
  73                 <variablelist class='network-directives'>
  74
  75                         <varlistentry>
  76                                 <term><varname>DNS=</varname></term>
  77                                 <listitem><para>A space separated list
  78                                 of IPv4 and IPv6 addresses to be used
  79                                 as system DNS servers. DNS requests
  80                                 are sent to one of the listed DNS
  81                                 servers in parallel to any
  82                                 per-interface DNS servers acquired
  83                                 from
  84                                 <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. For
  85                                 compatibility reasons, if set to the
  86                                 empty list the DNS servers listed in
  87                                 <filename>/etc/resolv.conf</filename>
  88                                 are used, if any are
  89                                 configured there. This setting
  90                                 defaults to the empty
  91                                 list.</para></listitem>
  92                         </varlistentry>
  93
  94                         <varlistentry>
  95                                 <term><varname>FallbackDNS=</varname></term>
  96                                 <listitem><para>A space separated list
  97                                 of IPv4 and IPv6 addresses to be used
  98                                 as the fallback DNS servers. Any
  99                                 per-interface DNS servers obtained
 100                                 from
 101                                 <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
 102                                 take precedence over this setting, as
 103                                 do any servers set via
 104                                 <varname>DNS=</varname> above or
 105                                 <filename>/etc/resolv.conf</filename>. This
 106                                 setting is hence only used if no other
 107                                 DNS server information is known. If
 108                                 this option is not given, a
 109                                 compiled-in list of DNS servers is
 110                                 used instead.</para></listitem>
 111                         </varlistentry>
 112
 113                         <varlistentry>
 114                                 <term><varname>LLMNR=</varname></term>
 115                                 <listitem><para>Takes a boolean
 116                                 argument or
 117                                 <literal>resolve</literal>. Controls
 118                                 Link-Local Multicast Name Resolution support (<ulink
 119                                 url="https://tools.ietf.org/html/rfc4795">RFC
 120                                 4794</ulink>) on the local host. If
 121                                 true enables full LLMNR responder and
 122                                 resolver support. If false disable
 123                                 both. If set to
 124                                 <literal>resolve</literal> only
 125                                 resolving support is enabled, but
 126                                 responding is disabled. Note that
 127                                 <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
 128                                 also maintains per-interface LLMNR
 129                                 settings. LLMNR will be enabled on an
 130                                 interface only if the per-interface
 131                                 and the global setting is
 132                                 on.</para></listitem>
 133                         </varlistentry>
 134
 135                 </variablelist>
 136         </refsect1>
 137
 138         <refsect1>
 139                   <title>See Also</title>
 140                   <para>
 141                         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 142                         <citerefentry><refentrytitle>systemd-resolved.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 143                         <citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 144                         <citerefentry><refentrytitle>resolv.conf</refentrytitle><manvolnum>4</manvolnum></citerefentry>
 145                   </para>
 146         </refsect1>
 147
 148 </refentry>