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diff --git a/man/systemd-networkd.service.xml b/man/systemd-networkd.service.xml
index 4cd0872b9..91e139248 100644
--- a/man/systemd-networkd.service.xml
+++ b/man/systemd-networkd.service.xml
@@ -61,11 +61,16 @@
network devices as they appear, as well as creating virtual
network devices.
+ To configure low-level link settings independently of
+ networks, see
+ udev7
+ .
+
Network configurations applied before networkd is started
- are not removed, and configuration applied by networkd are not
- removed when networkd exits. 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,
+ are not removed, and static configuration applied by networkd
+ are not removed when networkd exits. 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.
@@ -80,18 +85,67 @@
identical filenames replace each other. Files in
/etc have the highest priority, files in
/run take precedence over files with the same
- name in /lib. This can be used to override a
+ name in /usr/lib. This can be used to override a
system-supplied configuration file with a local file if needed; a symlink in
/etc with the same name as a configuration file in
- /lib, pointing to /dev/null,
+ /usr/lib, pointing to /dev/null,
disables the configuration file entirely.
Virtual Network Devices
- Netdev files must have the extension .netdev;
- other extensions are ignored. Virtual network devices are created as soon
- as networkd is started.
+ Virtual Network Device files must have the extension
+ .netdev; other extensions are ignored. Virtual
+ network devices are created as soon as networkd is started.
+
+ A virtual network device is only created if the
+ [Match] section matches the current
+ environment, or if the section is empty. The following keys are accepted:
+
+
+
+ Host
+
+ Matches against the hostname or machine ID of the
+ host. See ConditionHost= in
+ systemd.unit5
+ for details.
+
+
+
+
+ Virtualization
+
+ Checks whether the system is executed in a virtualized
+ environment and optionally test whether it is a specific
+ implementation. See ConditionVirtualization= in
+ systemd.unit5
+ for details.
+
+
+
+
+ KernelCommandLine
+
+ Checks whether a specific kernel command line option is
+ set (or if prefixed with the exclamation mark unset). See
+ ConditionKernelCommandLine= in
+ systemd.unit5
+ for details.
+
+
+
+
+ Architecture
+
+ Checks whether the system is running on a specific
+ architecture. See ConditionArchitecture= in
+ systemd.unit5
+ for details.
+
+
+
+
- The [Bridge] section accepts the following
+ The [NetDev] section accepts the following
keys:
@@ -102,7 +156,29 @@
bridge. This option is compulsory.
+
+ Kind
+
+ The netdev kind. Currently, bridge,
+ bond and vlan
+ are supported. This option is compulsory.
+
+
+
+ The [VLAN] section only applies for netdevs of kind vlan,
+ and accepts the following key:
+
+
+
+ Id
+
+ The VLAN ID to use. An integer in the range 0â4094.
+ This option is compulsory.
+
+
+
+
Networks
@@ -131,14 +207,16 @@
Path
The persistent path, as exposed by the udev
- property ID_PATH.
+ property ID_PATH. May contain shell
+ style globs.
Driver
The driver currently bound to the device, as
- exposed by the udev property DRIVER.
+ exposed by the udev property DRIVER
+ of its parent device.
@@ -153,7 +231,50 @@
Name
The device name, as exposed by the udev property
- INTERFACE.
+ INTERFACE. May contain shell style
+ globs.
+
+
+
+ Host
+
+ Matches against the hostname or machine ID of the
+ host. See ConditionHost= in
+ systemd.unit5
+ for details.
+
+
+
+
+ Virtualization
+
+ Checks whether the system is executed in a virtualized
+ environment and optionally test whether it is a specific
+ implementation. See ConditionVirtualization= in
+ systemd.unit5
+ for details.
+
+
+
+
+ KernelCommandLine
+
+ Checks whether a specific kernel command line option is
+ set (or if prefixed with the exclamation mark unset). See
+ ConditionKernelCommandLine= in
+ systemd.unit5
+ for details.
+
+
+
+
+ Architecture
+
+ Checks whether the system is running on a specific
+ architecture. See ConditionArchitecture= in
+ systemd.unit5
+ for details.
+
@@ -168,14 +289,20 @@
presentation purposes.
+
+ DHCP
+
+ A boolean. When true, enables basic DHCPv4 support.
+
+
Address
A static IPv4 or IPv6 address and its prefix length,
- separated by a '/' character. The format of the address must
+ separated by a / character. The format of the address must
be as described in
inet_pton3
- .
+ . This is a short-hand for an [Address] section only containing an Address key (see below).
@@ -183,13 +310,34 @@
The gateway address, which must be in the format described in
inet_pton3
+ . This is a short-hand for a [Route] section only containing a Gateway key.
+
+
+
+ DNS
+
+ A DNS server address, which must be in the format described in
+ inet_pton3
.
Bridge
- The name of the bridge to add the configured link to.
+ The name of the bridge to add the link to.
+
+
+
+ Bond
+
+ The name of the bond to add the link to.
+
+
+
+ VLAN
+
+ The name of a VLAN to create on the link. This option
+ may be specified more than once.
@@ -200,7 +348,16 @@
Address
- As in the [Network] section.
+ As in the [Network] section. This key is mandatory.
+
+
+
+ Broadcast
+
+ The broadcast address, which must be in the format described in
+ inet_pton3
+ . This key only applies to IPv4 addresses. If it is not given, it is
+ derived from the Address key.
@@ -217,7 +374,7 @@
Gateway
- As in the [Network] section.
+ As in the [Network] section. This key is mandatory.
@@ -227,7 +384,42 @@
prefixlength, if ommitted a full-length host route is assumed.
+
+
+ The [DHCPv4] section accepts the following keys:
+
+
+
+ UseDNS
+
+ When true (the default), the DNS servers received from the DHCP server will
+ be used and take precedence over any statically configured ones.
+
+
+
+ UseMTU
+
+ When true, the interface maximum transmission unit from the DHCP server will
+ be used on the current link. Defaults to false.
+
+
+
+ UseHostname
+
+ When true (the default), the hostname received from the DHCP server
+ will be used as the transient hostname.
+
+
+
+ CriticalConnection
+
+ 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.
+
+
+