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Diffstat (limited to 'man/systemd.network.xml')
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diff --git a/man/systemd.network.xml b/man/systemd.network.xml index c072f08f61..b8facdc0af 100644 --- a/man/systemd.network.xml +++ b/man/systemd.network.xml @@ -1,6 +1,6 @@ <?xml version='1.0'?> <!--*-nxml-*--> <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" - "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> + "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> <!-- This file is part of systemd. @@ -23,682 +23,679 @@ <refentry id="systemd.network" 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> - <refentrytitle>systemd.network</refentrytitle> - <manvolnum>5</manvolnum> - </refmeta> - - <refnamediv> - <refname>systemd.network</refname> - <refpurpose>Network configuration</refpurpose> - </refnamediv> - - <refsynopsisdiv> - <para><filename><replaceable>network</replaceable>.network</filename></para> - </refsynopsisdiv> - - <refsect1> - <title>Description</title> - - <para>Network setup is performed by - <citerefentry><refentrytitle>systemd-networkd</refentrytitle><manvolnum>8</manvolnum></citerefentry>. - </para> - - <para>Network files must have the extension <filename>.network</filename>; - other extensions are ignored. Networks are applied to links whenever the links - appear.</para> - - <para>The <filename>.network</filename> 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>. - All configuration files are collectively sorted and processed in lexical order, - regardless of the directories in which they live. However, files with - identical filenames replace each other. Files in - <filename>/etc</filename> have the highest priority, files in - <filename>/run</filename> take precedence over files with the same - name in <filename>/usr/lib</filename>. This can be used to override a - system-supplied configuration file with a local file if needed; a symlink in - <filename>/etc</filename> with the same name as a configuration file in - <filename>/usr/lib</filename>, pointing to <filename>/dev/null</filename>, - disables the configuration file entirely.</para> - - </refsect1> - - <refsect1> - <title>[Match] Section Options</title> - - <para>The network file contains a <literal>[Match]</literal> section, - which determines if a given network file may be applied to a given device; - and a <literal>[Network]</literal> section specifying how the device should - be configured. The first (in lexical order) of the network files that - matches a given device is applied.</para> - - <para>A network file is said to match a device if each of the entries in the - <literal>[Match]</literal> section matches, or if the section is empty. - The following keys are accepted:</para> - - <variablelist class='network-directives'> - <varlistentry> - <term><varname>MACAddress=</varname></term> - <listitem> - <para>The hardware address.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Path=</varname></term> - <listitem> - <para>The persistent path, as exposed by the udev - property <literal>ID_PATH</literal>. May contain shell - style globs.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Driver=</varname></term> - <listitem> - <para>The driver currently bound to the device, as - exposed by the udev property <literal>DRIVER</literal> - of its parent device, or if that is not set the driver - as exposed by <literal>ethtool -i</literal> of the - device itself.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Type=</varname></term> - <listitem> - <para>The device type, as exposed by the udev property - <literal>DEVTYPE</literal>.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Name=</varname></term> - <listitem> - <para>The device name, as exposed by the udev property - <literal>INTERFACE</literal>. May contain shell style - globs.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Host=</varname></term> - <listitem> - <para>Matches against the hostname or machine ID of the - host. See <literal>ConditionHost=</literal> in - <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> - for details. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Virtualization=</varname></term> - <listitem> - <para>Checks whether the system is executed in a virtualized - environment and optionally test whether it is a specific - implementation. See <literal>ConditionVirtualization=</literal> in - <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> - for details. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>KernelCommandLine=</varname></term> - <listitem> - <para>Checks whether a specific kernel command line option is - set (or if prefixed with the exclamation mark unset). See - <literal>ConditionKernelCommandLine=</literal> in - <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> - for details. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Architecture=</varname></term> - <listitem> - <para>Checks whether the system is running on a specific - architecture. See <literal>ConditionArchitecture=</literal> in - <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> - for details. - </para> - </listitem> - </varlistentry> - </variablelist> - - </refsect1> - - <refsect1> - <title>[Link] Section Options</title> - - <para> The <literal>[Link]</literal> section accepts the following keys:</para> - - <variablelist class='network-directives'> - <varlistentry> - <term><varname>MACAddress=</varname></term> - <listitem> - <para>The hardware address.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>MTUBytes=</varname></term> - <listitem> - <para>The maximum transmission unit in bytes to - set for the device. The usual suffixes K, M, G, - are supported and are understood to the base of - 1024.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>[Network] Section Options</title> - - <para>The <literal>[Network]</literal> section accepts the following keys:</para> - - <variablelist class='network-directives'> - <varlistentry> - <term><varname>Description=</varname></term> - <listitem> - <para>A description of the device. This is only used for - presentation purposes.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>DHCP=</varname></term> - <listitem> - <para>Enables DHCPv4 and/or DHCPv6 support. Accepts - <literal>yes</literal>, <literal>no</literal>, - <literal>ipv4</literal> or <literal>ipv6</literal>.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>DHCPServer=</varname></term> - <listitem> - <para>A boolean. Enables a basic DHCPv4 server on the - device. Mostly useful for handing out leases to container - instances.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>IPv4LL=</varname></term> - <listitem> - <para>A boolean. When true, enables IPv4 link-local support. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>IPv4LLRoute=</varname></term> - <listitem> - <para>A boolean. When true, sets up the route needed for - non-IPv4LL hosts to communicate with IPv4LL-only hosts. Defaults - to false. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>LLMNR=</varname></term> - <listitem> - <para>A boolean or <literal>resolve</literal>. When true, enables - Link-Local Multicast Name Resolution on the link, when set to - <literal>resolve</literal> only resolution is enabled, but not - announcement. Defaults to true.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>LLDP=</varname></term> - <listitem> - <para>A boolean. When true, enables LLDP link receive support. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Address=</varname></term> - <listitem> - <para>A static IPv4 or IPv6 address and its prefix length, - separated by a <literal>/</literal> character. Specify this - key more than once to configure several addresses. - The format of the address must be as described in - <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>. - This is a short-hand for an [Address] section only containing - an Address key (see below). This option may be specified - more than once. - </para> - - <para>If the specified - address is 0.0.0.0 - (for IPv4) or [::] - (for IPv6), a new - address range of the - requested size is - automatically - allocated from a - system-wide pool of - unused ranges. The - allocated range is - checked against all - current network - interfaces and all - known network - configuration files to - avoid address range - conflicts. The default - system-wide pool - consists of - 192.168.0.0/16, - 172.16.0.0/12 and - 10.0.0.0/8 for IPv4, - and fc00::/7 for - IPv6. This - functionality is - useful to manage a - large number of - dynamically created - network interfaces - with the same network - configuration and - automatic address - range - assignment.</para> - - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Gateway=</varname></term> - <listitem> - <para>The gateway address, which must be in the format described in - <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>. - This is a short-hand for a [Route] section only containing a Gateway - key. This option may be specified more than once.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>DNS=</varname></term> - <listitem> - <para>A DNS server address, which must be in the format described in - <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>. - This option may be specified more than once.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Domains=</varname></term> - <listitem> - <para>The domains used for DNS resolution over this link.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>NTP=</varname></term> - <listitem> - <para>An NTP server address. This option may be specified more than once.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>IPForward=</varname></term> - <listitem><para>Configures IP - forwarding for the network - interface. If enabled incoming - packets on the network - interface will be forwarded to - other interfaces according to - the routing table. Takes - either a boolean argument, or - the values - <literal>ipv4</literal> or - <literal>ipv6</literal>, which - only enables IP forwarding for - the specified address - family.</para></listitem> - </varlistentry> - <varlistentry> - <term><varname>IPMasquerade=</varname></term> - <listitem><para>Configures IP - masquerading for the network - interface. If enabled packets - forwarded from the network - interface will be appear as - coming from the local - host. Takes a boolean - argument. Implies - <varname>IPForward=yes</varname>.</para></listitem> - </varlistentry> - <varlistentry> - <term><varname>Bridge=</varname></term> - <listitem> - <para>The name of the bridge to add the link to.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Bond=</varname></term> - <listitem> - <para>The name of the bond to add the link to.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>VLAN=</varname></term> - <listitem> - <para>The name of a VLAN to create on the link. This option - may be specified more than once.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>MACVLAN=</varname></term> - <listitem> - <para>The name of a MACVLAN to create on the link. This option - may be specified more than once.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>VXLAN=</varname></term> - <listitem> - <para>The name of a VXLAN to create on the link. This option - may be specified more than once.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Tunnel=</varname></term> - <listitem> - <para>The name of a Tunnel to create on the link. This option - may be specified more than once.</para> - </listitem> - </varlistentry> - </variablelist> - - </refsect1> - - <refsect1> - <title>[Address] Section Options</title> - - <para>An <literal>[Address]</literal> section accepts the following keys. - Specify several <literal>[Address]</literal> sections to configure several - addresses.</para> - - <variablelist class='network-directives'> - <varlistentry> - <term><varname>Address=</varname></term> - <listitem> - <para>As in the <literal>[Network]</literal> section. This key is mandatory.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Peer=</varname></term> - <listitem> - <para>The peer address in a point-to-point connection. Accepts the same format as - the <literal>Address</literal> key.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Broadcast=</varname></term> - <listitem> - <para>The broadcast address, which must be in the format described in - <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>. - This key only applies to IPv4 addresses. If it is not given, it is - derived from the <literal>Address</literal> key.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Label=</varname></term> - <listitem> - <para>An address label.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>[Route] Section Options</title> - <para>The <literal>[Route]</literal> section accepts the following keys. Specify - several <literal>[Route]</literal> sections to configure several routes.</para> - - <variablelist class='network-directives'> - <varlistentry> - <term><varname>Gateway=</varname></term> - <listitem> - <para>As in the <literal>[Network]</literal> section.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Destination=</varname></term> - <listitem> - <para>The destination prefix of the route. Possibly followed by a slash and the - prefixlength. If omitted, a full-length host route is assumed.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Source=</varname></term> - <listitem> - <para>The source prefix of the route. Possibly followed by a slash and the - prefixlength. If omitted, a full-length host route is assumed.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>Metric=</varname></term> - <listitem> - <para>The metric of the route. An unsigned integer</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>[DHCP] Section Options</title> - <para>The <literal>[DHCP]</literal> section accepts the following keys:</para> - - <variablelist class='network-directives'> - <varlistentry> - <term><varname>UseDNS=</varname></term> - <listitem> - <para>When true (the default), the DNS servers received from the DHCP server will - be used and take precedence over any statically configured ones.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>UseMTU=</varname></term> - <listitem> - <para>When true, the interface maximum transmission unit from the DHCP server will - be used on the current link. Defaults to false.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>SendHostname=</varname></term> - <listitem> - <para>When true (the default), the machine's hostname will be sent to the DHCP - server</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>UseHostname=</varname></term> - <listitem> - <para>When true (the default), the hostname received from the DHCP server - will be used as the transient hostname.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>UseDomains=</varname></term> - <listitem> - <para>When true (not the default), the domain name received from the DHCP server - will be used for DNS resolution over this link.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>UseRoutes=</varname></term> - <listitem> - <para>When true (the default), the static routes will be requested from the DHCP server - and added to the routing table with metric of 1024.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>CriticalConnection=</varname></term> - <listitem> - <para>When true, the connection will never be torn down even if the DHCP lease - expires. This is contrary to the DHCP specification, but may be the best choice - if, say, the root filesystem relies on this connection. Defaults to false.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>VendorClassIdentifier=</varname></term> - <listitem> - <para>The vendor class identifier used to identify vendor type and configuration.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>RequestBroadcast=</varname></term> - <listitem> - <para>Request the server to use broadcast messages before the IP address has been - configured. This is necessary for devices that cannot receive RAW packets, or that - cannot receive packets at all before an IP address has been configured. On the other - hand, this must not be enabled on networks where broadcasts are filtered out.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>RouteMetric=</varname></term> - <listitem> - <para>Set the routing metric for routes specified by the DHCP server.</para> - </listitem> - </varlistentry> - </variablelist> - - </refsect1> - - <refsect1> - <title>[Bridge] Section Options</title> - <para>The <literal>[Bridge]</literal> section accepts the following keys.</para> - <variablelist class='network-directives'> - <varlistentry> - <term><varname>Cost=</varname></term> - <listitem> - <para>Each port in a bridge may have different speed. Cost is used to decide which link to use. Faster interfaces should have lower costs</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>[BridgeFDB] Section Options</title> - <para>The <literal>[BridgeFDB]</literal> section manages the forwarding database table of a port and accepts the following keys. Specify - several <literal>[BridgeFDB]</literal> sections to configure several static MAC table entries.</para> - - <variablelist class='network-directives'> - <varlistentry> - <term><varname>MACAddress=</varname></term> - <listitem> - <para>As in the <literal>[Network]</literal> section. This key is mandatory.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><varname>VLANId=</varname></term> - <listitem> - <para>The VLAN Id for the new static MAC table entry. - If omitted, no VLAN Id info is appended to the new static MAC table entry.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Example</title> - <example> - <title>/etc/systemd/network/50-static.network</title> - - <programlisting>[Match] + <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> + <refentrytitle>systemd.network</refentrytitle> + <manvolnum>5</manvolnum> + </refmeta> + + <refnamediv> + <refname>systemd.network</refname> + <refpurpose>Network configuration</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <para><filename><replaceable>network</replaceable>.network</filename></para> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para>Network setup is performed by + <citerefentry><refentrytitle>systemd-networkd</refentrytitle><manvolnum>8</manvolnum></citerefentry>. + </para> + + <para>Network files must have the extension + <filename>.network</filename>; other extensions are ignored. + Networks are applied to links whenever the links appear.</para> + + <para>The <filename>.network</filename> 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>. All configuration files + are collectively sorted and processed in lexical order, regardless + of the directories in which they live. However, files with + identical filenames replace each other. Files in + <filename>/etc</filename> have the highest priority, files in + <filename>/run</filename> take precedence over files with the same + name in <filename>/usr/lib</filename>. This can be used to + override a system-supplied configuration file with a local file if + needed; a symlink in <filename>/etc</filename> with the same name + as a configuration file in <filename>/usr/lib</filename>, pointing + to <filename>/dev/null</filename>, disables the configuration file + entirely.</para> + + </refsect1> + + <refsect1> + <title>[Match] Section Options</title> + + <para>The network file contains a <literal>[Match]</literal> + section, which determines if a given network file may be applied + to a given device; and a <literal>[Network]</literal> section + specifying how the device should be configured. The first (in + lexical order) of the network files that matches a given device + is applied.</para> + + <para>A network file is said to match a device if each of the + entries in the <literal>[Match]</literal> section matches, or if + the section is empty. The following keys are accepted:</para> + + <variablelist class='network-directives'> + <varlistentry> + <term><varname>MACAddress=</varname></term> + <listitem> + <para>The hardware address.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Path=</varname></term> + <listitem> + <para>The persistent path, as exposed by the udev + property <literal>ID_PATH</literal>. May contain shell + style globs.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Driver=</varname></term> + <listitem> + <para>The driver currently bound to the device, as + exposed by the udev property <literal>DRIVER</literal> + of its parent device, or if that is not set the driver + as exposed by <literal>ethtool -i</literal> of the + device itself.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Type=</varname></term> + <listitem> + <para>The device type, as exposed by the udev property + <literal>DEVTYPE</literal>.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Name=</varname></term> + <listitem> + <para>The device name, as exposed by the udev property + <literal>INTERFACE</literal>. May contain shell style + globs.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Host=</varname></term> + <listitem> + <para>Matches against the hostname or machine ID of the + host. See <literal>ConditionHost=</literal> in + <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> + for details. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Virtualization=</varname></term> + <listitem> + <para>Checks whether the system is executed in a virtualized + environment and optionally test whether it is a specific + implementation. See <literal>ConditionVirtualization=</literal> in + <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> + for details. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>KernelCommandLine=</varname></term> + <listitem> + <para>Checks whether a specific kernel command line option is + set (or if prefixed with the exclamation mark unset). See + <literal>ConditionKernelCommandLine=</literal> in + <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> + for details. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Architecture=</varname></term> + <listitem> + <para>Checks whether the system is running on a specific + architecture. See <literal>ConditionArchitecture=</literal> in + <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> + for details. + </para> + </listitem> + </varlistentry> + </variablelist> + + </refsect1> + + <refsect1> + <title>[Link] Section Options</title> + + <para> The <literal>[Link]</literal> section accepts the following keys:</para> + + <variablelist class='network-directives'> + <varlistentry> + <term><varname>MACAddress=</varname></term> + <listitem> + <para>The hardware address.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>MTUBytes=</varname></term> + <listitem> + <para>The maximum transmission unit in bytes to set for the + device. The usual suffixes K, M, G, are supported and are + understood to the base of 1024.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>[Network] Section Options</title> + + <para>The <literal>[Network]</literal> section accepts the following keys:</para> + + <variablelist class='network-directives'> + <varlistentry> + <term><varname>Description=</varname></term> + <listitem> + <para>A description of the device. This is only used for + presentation purposes.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>DHCP=</varname></term> + <listitem> + <para>Enables DHCPv4 and/or DHCPv6 support. Accepts + <literal>yes</literal>, <literal>no</literal>, + <literal>ipv4</literal>, or <literal>ipv6</literal>.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>DHCPServer=</varname></term> + <listitem> + <para>A boolean. Enables a basic DHCPv4 server on the + device. Mostly useful for handing out leases to container + instances.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>IPv4LL=</varname></term> + <listitem> + <para>A boolean. When true, enables IPv4 link-local support. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>IPv4LLRoute=</varname></term> + <listitem> + <para>A boolean. When true, sets up the route needed for + non-IPv4LL hosts to communicate with IPv4LL-only hosts. Defaults + to false. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>LLMNR=</varname></term> + <listitem> + <para>A boolean or <literal>resolve</literal>. When true, enables + Link-Local Multicast Name Resolution on the link, when set to + <literal>resolve</literal> only resolution is enabled, but not + announcement. Defaults to true.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>LLDP=</varname></term> + <listitem> + <para>A boolean. When true, enables LLDP link receive support. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Address=</varname></term> + <listitem> + <para>A static IPv4 or IPv6 address and its prefix length, + separated by a <literal>/</literal> character. Specify + this key more than once to configure several addresses. + The format of the address must be as described in + <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>. + This is a short-hand for an [Address] section only + containing an Address key (see below). This option may be + specified more than once. + </para> + + <para>If the specified address is 0.0.0.0 (for IPv4) or + [::] (for IPv6), a new address range of the requested size + is automatically allocated from a system-wide pool of + unused ranges. The allocated range is checked against all + current network interfaces and all known network + configuration files to avoid address range conflicts. The + default system-wide pool consists of 192.168.0.0/16, + 172.16.0.0/12 and 10.0.0.0/8 for IPv4, and fc00::/7 for + IPv6. This functionality is useful to manage a large + number of dynamically created network interfaces with the + same network configuration and automatic address range + assignment.</para> + + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Gateway=</varname></term> + <listitem> + <para>The gateway address, which must be in the format + described in + <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>. + This is a short-hand for a [Route] section only containing + a Gateway key. This option may be specified more than + once.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>DNS=</varname></term> + <listitem> + <para>A DNS server address, which must be in the format + described in + <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>. + This option may be specified more than once.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Domains=</varname></term> + <listitem> + <para>The domains used for DNS resolution over this link.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>NTP=</varname></term> + <listitem> + <para>An NTP server address. This option may be specified more than once.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>IPForward=</varname></term> + <listitem><para>Configures IP forwarding for the network + interface. If enabled incoming packets on the network + interface will be forwarded to other interfaces according to + the routing table. Takes either a boolean argument, or the + values <literal>ipv4</literal> or <literal>ipv6</literal>, + which only enables IP forwarding for the specified address + family.</para></listitem> + </varlistentry> + <varlistentry> + <term><varname>IPMasquerade=</varname></term> + <listitem><para>Configures IP masquerading for the network + interface. If enabled packets forwarded from the network + interface will be appear as coming from the local host. + Takes a boolean argument. Implies + <varname>IPForward=yes</varname>.</para></listitem> + </varlistentry> + <varlistentry> + <term><varname>Bridge=</varname></term> + <listitem> + <para>The name of the bridge to add the link to.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Bond=</varname></term> + <listitem> + <para>The name of the bond to add the link to.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>VLAN=</varname></term> + <listitem> + <para>The name of a VLAN to create on the link. This + option may be specified more than once.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>MACVLAN=</varname></term> + <listitem> + <para>The name of a MACVLAN to create on the link. This + option may be specified more than once.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>VXLAN=</varname></term> + <listitem> + <para>The name of a VXLAN to create on the link. This + option may be specified more than once.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Tunnel=</varname></term> + <listitem> + <para>The name of a Tunnel to create on the link. This + option may be specified more than once.</para> + </listitem> + </varlistentry> + </variablelist> + + </refsect1> + + <refsect1> + <title>[Address] Section Options</title> + + <para>An <literal>[Address]</literal> section accepts the + following keys. Specify several <literal>[Address]</literal> + sections to configure several addresses.</para> + + <variablelist class='network-directives'> + <varlistentry> + <term><varname>Address=</varname></term> + <listitem> + <para>As in the <literal>[Network]</literal> section. This + key is mandatory.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Peer=</varname></term> + <listitem> + <para>The peer address in a point-to-point connection. + Accepts the same format as the <literal>Address</literal> + key.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Broadcast=</varname></term> + <listitem> + <para>The broadcast address, which must be in the format + described in + <citerefentry><refentrytitle>inet_pton</refentrytitle><manvolnum>3</manvolnum></citerefentry>. + This key only applies to IPv4 addresses. If it is not + given, it is derived from the <literal>Address</literal> + key.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Label=</varname></term> + <listitem> + <para>An address label.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>[Route] Section Options</title> + <para>The <literal>[Route]</literal> section accepts the + following keys. Specify several <literal>[Route]</literal> + sections to configure several routes.</para> + + <variablelist class='network-directives'> + <varlistentry> + <term><varname>Gateway=</varname></term> + <listitem> + <para>As in the <literal>[Network]</literal> section.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Destination=</varname></term> + <listitem> + <para>The destination prefix of the route. Possibly + followed by a slash and the prefixlength. If omitted, a + full-length host route is assumed.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Source=</varname></term> + <listitem> + <para>The source prefix of the route. Possibly followed by + a slash and the prefixlength. If omitted, a full-length + host route is assumed.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>Metric=</varname></term> + <listitem> + <para>The metric of the route. An unsigned integer</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>[DHCP] Section Options</title> + <para>The <literal>[DHCP]</literal> section accepts the following keys:</para> + + <variablelist class='network-directives'> + <varlistentry> + <term><varname>UseDNS=</varname></term> + <listitem> + <para>When true (the default), the DNS servers received + from the DHCP server will be used and take precedence over + any statically configured ones.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>UseMTU=</varname></term> + <listitem> + <para>When true, the interface maximum transmission unit + from the DHCP server will be used on the current link. + Defaults to false.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>SendHostname=</varname></term> + <listitem> + <para>When true (the default), the machine's hostname will be sent to the DHCP + server</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>UseHostname=</varname></term> + <listitem> + <para>When true (the default), the hostname received from + the DHCP server will be used as the transient + hostname.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>UseDomains=</varname></term> + <listitem> + <para>When true (not the default), the domain name + received from the DHCP server will be used for DNS + resolution over this link.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>UseRoutes=</varname></term> + <listitem> + <para>When true (the default), the static routes will be + requested from the DHCP server and added to the routing + table with metric of 1024.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>CriticalConnection=</varname></term> + <listitem> + <para>When true, the connection will never be torn down + even if the DHCP lease expires. This is contrary to the + DHCP specification, but may be the best choice if, say, + the root filesystem relies on this connection. Defaults to + false.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>VendorClassIdentifier=</varname></term> + <listitem> + <para>The vendor class identifier used to identify vendor + type and configuration.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>RequestBroadcast=</varname></term> + <listitem> + <para>Request the server to use broadcast messages before + the IP address has been configured. This is necessary for + devices that cannot receive RAW packets, or that cannot + receive packets at all before an IP address has been + configured. On the other hand, this must not be enabled on + networks where broadcasts are filtered out.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>RouteMetric=</varname></term> + <listitem> + <para>Set the routing metric for routes specified by the + DHCP server.</para> + </listitem> + </varlistentry> + </variablelist> + + </refsect1> + + <refsect1> + <title>[Bridge] Section Options</title> + <para>The <literal>[Bridge]</literal> section accepts the + following keys.</para> + <variablelist class='network-directives'> + <varlistentry> + <term><varname>Cost=</varname></term> + <listitem> + <para>Each port in a bridge may have different speed. Cost + is used to decide which link to use. Faster interfaces + should have lower costs</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>[BridgeFDB] Section Options</title> + <para>The <literal>[BridgeFDB]</literal> section manages the + forwarding database table of a port and accepts the following + keys. Specify several <literal>[BridgeFDB]</literal> sections to + configure several static MAC table entries.</para> + + <variablelist class='network-directives'> + <varlistentry> + <term><varname>MACAddress=</varname></term> + <listitem> + <para>As in the <literal>[Network]</literal> section. This + key is mandatory.</para> + </listitem> + </varlistentry> + <varlistentry> + <term><varname>VLANId=</varname></term> + <listitem> + <para>The VLAN Id for the new static MAC table entry. If + omitted, no VLAN Id info is appended to the new static MAC + table entry.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Example</title> + <example> + <title>/etc/systemd/network/50-static.network</title> + + <programlisting>[Match] Name=enp2s0 [Network] Address=192.168.0.15/24 Gateway=192.168.0.1</programlisting> - </example> + </example> - <example> - <title>/etc/systemd/network/80-dhcp.network</title> + <example> + <title>/etc/systemd/network/80-dhcp.network</title> - <programlisting>[Match] + <programlisting>[Match] Name=en* [Network] DHCP=both</programlisting> - </example> + </example> - <example> - <title>/etc/systemd/network/bridge-static.network</title> + <example> + <title>/etc/systemd/network/bridge-static.network</title> - <programlisting>[Match] + <programlisting>[Match] Name=bridge0 [Network] Address=192.168.0.15/24 Gateway=192.168.0.1 DNS=192.168.0.1</programlisting> - </example> + </example> - <example> - <title>/etc/systemd/network/bridge-slave-interface.network</title> + <example> + <title>/etc/systemd/network/bridge-slave-interface.network</title> - <programlisting>[Match] + <programlisting>[Match] Name=enp2s0 [Network] Bridge=bridge0</programlisting> - </example> - <example> - <title>/etc/systemd/network/ipip.network</title> + </example> + <example> + <title>/etc/systemd/network/ipip.network</title> - <programlisting>[Match] + <programlisting>[Match] Name=em1 [Network] Tunnel=ipip-tun</programlisting> - </example> + </example> - <example> - <title>/etc/systemd/network/sit.network</title> + <example> + <title>/etc/systemd/network/sit.network</title> - <programlisting>[Match] + <programlisting>[Match] Name=em1 [Network] Tunnel=sit-tun</programlisting> - </example> + </example> - <example> - <title>/etc/systemd/network/gre.network</title> + <example> + <title>/etc/systemd/network/gre.network</title> - <programlisting>[Match] + <programlisting>[Match] Name=em1 [Network] Tunnel=gre-tun</programlisting> - </example> + </example> - <example> - <title>/etc/systemd/network/vti.network</title> + <example> + <title>/etc/systemd/network/vti.network</title> - <programlisting>[Match] + <programlisting>[Match] Name=em1 [Network] Tunnel=vti-tun</programlisting> - </example> - </refsect1> - - <refsect1> - <title>See Also</title> - <para> - <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd-networkd</refentrytitle><manvolnum>8</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry> - </para> - </refsect1> + </example> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-networkd</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry> + </para> + </refsect1> </refentry> |