systemd/man/systemd-networkd.service.xml

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<refentry id="systemd-networkd.service" conditional='ENABLE_NETWORKD'>

        <refentryinfo>
                <title>systemd-networkd.service</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>systemd-networkd.service</refentrytitle>
                <manvolnum>8</manvolnum>
        </refmeta>

        <refnamediv>
                <refname>systemd-networkd.service</refname>
                <refname>systemd-networkd</refname>
                <refpurpose>Network manager</refpurpose>
        </refnamediv>

        <refsynopsisdiv>
                <para><filename>systemd-networkd.service</filename></para>
                <para><filename>/usr/lib/systemd/systemd-networkd</filename></para>
        </refsynopsisdiv>

        <refsect1>
                <title>Description</title>

                <para><command>systemd-networkd</command> is a system
                service that manages networks. It detects and configures
                network devices as they appear, as well as creating virtual
                network devices.</para>

                <para>To configure low-level link settings independently of
                networks, see
                <citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>
                .</para>

                <para>Network configurations applied before networkd is started
                are not removed, and static configuration applied by networkd
                is not removed when networkd exits. Dynamic configuration applied by
                networkd may also optionally be left in place on shut-down. This ensures
                restarting networkd does not cut the network connection, and, in particular,
                that it is safe to transition between the initrd and the real root,
                and back.</para>

                <para>Nameservers configured in networkd, or received over DHCP
                are exposed in <filename>/run/systemd/network/resolv.conf</filename>.
                This file should not be used directly, but only through a symlink
                from <filename>/etc/resolv.conf</filename>.</para>
        </refsect1>

        <refsect1><title>Configuration Files</title>
                <para>The configuration files are read from the files located in the
                system network directory <filename>/usr/lib/systemd/network</filename>,
                the volatile runtime network directory
                <filename>/run/systemd/network</filename> and the local administration
                network directory <filename>/etc/systemd/network</filename>.</para>

                <para>Networks are configured in <filename>.network</filename> files, see
                <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
                and virtual network devices are configured in <filename>.netdev</filename> files, see
                <citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
                </para>
        </refsect1>

        <refsect1>
                <title>See Also</title>
                <para>
                        <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
                        <citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
                        <citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
                        <citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>
                </para>
        </refsect1>

</refentry>