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systemd/man/resolved.conf.xml

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<?xml version='1.0'?> <!--*-nxml-*-->
<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
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Copyright 2014 Tom Gundersen
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<refentry id="resolved.conf" conditional='ENABLE_RESOLVED'
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>resolved.conf</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Tom</firstname>
<surname>Gundersen</surname>
<email>teg@jklm.no</email>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>resolved.conf</refentrytitle>
<manvolnum>5</manvolnum>
</refmeta>
<refnamediv>
<refname>resolved.conf</refname>
<refname>resolved.conf.d</refname>
<refpurpose>Network Name Resolution configuration files</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>/etc/systemd/resolved.conf</filename></para>
<para><filename>/etc/systemd/resolved.conf.d/*.conf</filename></para>
<para><filename>/run/systemd/resolved.conf.d/*.conf</filename></para>
<para><filename>/usr/lib/systemd/resolved.conf.d/*.conf</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>These configuration files control local DNS and LLMNR
name resolving.</para>
</refsect1>
<xi:include href="standard-conf.xml" xpointer="confd" />
<xi:include href="standard-conf.xml" xpointer="conf" />
<refsect1>
<title>Options</title>
<variablelist class='network-directives'>
<varlistentry>
<term><varname>DNS=</varname></term>
<listitem><para>A space separated list
of IPv4 and IPv6 addresses to be used
as system DNS servers. DNS requests
are sent to one of the listed DNS
servers in parallel to any
per-interface DNS servers acquired
from
<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>. For
compatibility reasons, if set to the
empty list the DNS servers listed in
<filename>/etc/resolv.conf</filename>
are used, if any are
configured there. This setting
defaults to the empty
list.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>FallbackDNS=</varname></term>
<listitem><para>A space separated list
of IPv4 and IPv6 addresses to be used
as the fallback DNS servers. Any
per-interface DNS servers obtained
from
<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
take precedence over this setting, as
do any servers set via
<varname>DNS=</varname> above or
<filename>/etc/resolv.conf</filename>. This
setting is hence only used if no other
DNS server information is known. If
this option is not given, a
compiled-in list of DNS servers is
used instead.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>LLMNR=</varname></term>
<listitem><para>Takes a boolean
argument or
<literal>resolve</literal>. Controls
Link-Local Multicast Name Resolution support (<ulink
url="https://tools.ietf.org/html/rfc4795">RFC
4794</ulink>) on the local host. If
true enables full LLMNR responder and
resolver support. If false disable
both. If set to
<literal>resolve</literal> only
resolving support is enabled, but
responding is disabled. Note that
<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
also maintains per-interface LLMNR
settings. LLMNR will be enabled on an
interface only if the per-interface
and the global setting is
on.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-resolved.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>resolv.conf</refentrytitle><manvolnum>4</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>