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- Copyright 2013 Tom Gundersen
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<refentry id="systemd.netdev" conditional='ENABLE_NETWORKD'>
<refentryinfo>
<title>systemd.network</title>
<productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Tom</firstname>
- <surname>Gundersen</surname>
- <email>teg@jklm.no</email>
- </author>
- </authorgroup>
</refentryinfo>
<refmeta>
<row><entry><varname>vcan</varname></entry>
<entry>The virtual CAN driver (vcan). Similar to the network loopback devices, vcan offers a virtual local CAN interface.</entry></row>
+ <row><entry><varname>vxcan</varname></entry>
+ <entry>The virtual CAN tunnel driver (vxcan). Similar to the virtual ethernet driver veth, vxcan implements a local CAN traffic tunnel between two virtual CAN network devices. When creating a vxcan, two vxcan devices are created as pair. When one end receives the packet it appears on its pair and vice versa. The vxcan can be used for cross namespace communication.
+ </entry></row>
+
+ <row><entry><varname>wireguard</varname></entry>
+ <entry>WireGuard Secure Network Tunnel.</entry></row>
+
+ <row><entry><varname>netdevsim</varname></entry>
+ <entry> A simulator. This simulated networking device is used for testing various networking APIs and at this time is particularly focused on testing hardware offloading related interfaces.</entry></row>
</tbody>
</tgroup>
</table>
</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>KernelVersion=</varname></term>
+ <listitem>
+ <para>Checks whether the kernel version (as reported by <command>uname -r</command>) matches a certain
+ expression (or if prefixed with the exclamation mark does not match it). See
+ <literal>ConditionKernelVersion=</literal> in
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> for details.
+ </para>
+ </listitem>
+ </varlistentry>
<varlistentry>
<term><varname>Architecture=</varname></term>
<listitem>
<term><varname>Mode=</varname></term>
<listitem>
<para>The IPVLAN mode to use. The supported options are
- <literal>L2</literal> and <literal>L3</literal>.
+ <literal>L2</literal>,<literal>L3</literal> and <literal>L3S</literal>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Flags=</varname></term>
+ <listitem>
+ <para>The IPVLAN flags to use. The supported options are
+ <literal>bridge</literal>,<literal>private</literal> and <literal>vepa</literal>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>Remote=</varname></term>
<listitem>
- <para>Configures destination multicast group IP address.</para>
+ <para>Configures destination IP address.</para>
</listitem>
</varlistentry>
<varlistentry>
</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>AllowLocalRemote=</varname></term>
+ <listitem>
+ <para>A boolean. When true allows tunnel traffic on <varname>ip6tnl</varname> devices where the remote endpoint is a local host address.
+ Defaults to unset.
+ </para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
<refsect1>
</varlistentry>
</variablelist>
</refsect1>
+ <refsect1>
+ <title>[VXCAN] Section Options</title>
+ <para>The <literal>[VXCAN]</literal> section only applies for
+ netdevs of kind <literal>vxcan</literal> and accepts the
+ following key:</para>
+
+ <variablelist class='network-directives'>
+ <varlistentry>
+ <term><varname>Peer=</varname></term>
+ <listitem>
+ <para>The peer interface name used when creating the netdev.
+ This option is compulsory.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
<refsect1>
<title>[Tun] Section Options</title>
as the <literal>[Tun]</literal> section.</para>
</refsect1>
+ <refsect1>
+ <title>[WireGuard] Section Options</title>
+
+ <para>The <literal>[WireGuard]</literal> section accepts the following
+ keys:</para>
+
+ <variablelist class='network-directives'>
+ <varlistentry>
+ <term><varname>PrivateKey=</varname></term>
+ <listitem>
+ <para>The Base64 encoded private key for the interface. It can be
+ generated using the <command>wg genkey</command> command
+ (see <citerefentry project="wireguard"><refentrytitle>wg</refentrytitle><manvolnum>8</manvolnum></citerefentry>).
+ This option is mandatory to use WireGuard.
+ Note that because this information is secret, you may want to set
+ the permissions of the .netdev file to be owned by <literal>root:systemd-networkd</literal>
+ with a <literal>0640</literal> file mode.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>ListenPort=</varname></term>
+ <listitem>
+ <para>Sets UDP port for listening. Takes either value between 1 and 65535
+ or <literal>auto</literal>. If <literal>auto</literal> is specified,
+ the port is automatically generated based on interface name.
+ Defaults to <literal>auto</literal>.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>FwMark=</varname></term>
+ <listitem>
+ <para>Sets a firewall mark on outgoing WireGuard packets from this interface.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>[WireGuardPeer] Section Options</title>
+
+ <para>The <literal>[WireGuardPeer]</literal> section accepts the following
+ keys:</para>
+
+ <variablelist class='network-directives'>
+ <varlistentry>
+ <term><varname>PublicKey=</varname></term>
+ <listitem>
+ <para>Sets a Base64 encoded public key calculated by <command>wg pubkey</command>
+ (see <citerefentry project="wireguard"><refentrytitle>wg</refentrytitle><manvolnum>8</manvolnum></citerefentry>)
+ from a private key, and usually transmitted out of band to the
+ author of the configuration file. This option is mandatory for this
+ section.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>PresharedKey=</varname></term>
+ <listitem>
+ <para>Optional preshared key for the interface. It can be generated
+ by the <command>wg genpsk</command> command. This option adds an
+ additional layer of symmetric-key cryptography to be mixed into the
+ already existing public-key cryptography, for post-quantum
+ resistance.
+ Note that because this information is secret, you may want to set
+ the permissions of the .netdev file to be owned by <literal>root:systemd-networkd</literal>
+ with a <literal>0640</literal> file mode.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>AllowedIPs=</varname></term>
+ <listitem>
+ <para>Sets a comma-separated list of IP (v4 or v6) addresses with CIDR masks
+ from which this peer is allowed to send incoming traffic and to
+ which outgoing traffic for this peer is directed. The catch-all
+ 0.0.0.0/0 may be specified for matching all IPv4 addresses, and
+ ::/0 may be specified for matching all IPv6 addresses. </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Endpoint=</varname></term>
+ <listitem>
+ <para>Sets an endpoint IP address or hostname, followed by a colon, and then
+ a port number. This endpoint will be updated automatically once to
+ the most recent source IP address and port of correctly
+ authenticated packets from the peer at configuration time.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>PersistentKeepalive=</varname></term>
+ <listitem>
+ <para>Sets a seconds interval, between 1 and 65535 inclusive, of how often
+ to send an authenticated empty packet to the peer for the purpose
+ of keeping a stateful firewall or NAT mapping valid persistently.
+ For example, if the interface very rarely sends traffic, but it
+ might at anytime receive traffic from a peer, and it is behind NAT,
+ the interface might benefit from having a persistent keepalive
+ interval of 25 seconds. If set to 0 or "off", this option is
+ disabled. By default or when unspecified, this option is off.
+ Most users will not need this.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
<refsect1>
<title>[Bond] Section Options</title>
Kind=macvtap
</programlisting>
</example>
+ <example>
+ <title>/etc/systemd/network/25-wireguard.netdev</title>
+ <programlisting>[NetDev]
+Name=wg0
+Kind=wireguard
+
+[WireGuard]
+PrivateKey=EEGlnEPYJV//kbvvIqxKkQwOiS+UENyPncC4bF46ong=
+ListenPort=51820
+
+[WireGuardPeer]
+PublicKey=RDf+LSpeEre7YEIKaxg+wbpsNV7du+ktR99uBEtIiCA=
+AllowedIPs=fd31:bf08:57cb::/48,192.168.26.0/24
+Endpoint=wireguard.example.com:51820</programlisting>
+ </example>
</refsect1>
<refsect1>
<title>See Also</title>
projects / thirdparty / systemd.git / blobdiff