systemd-networkd-wait-online.service, systemd-networkd-wait-online — Wait for network to come online
systemd-networkd-wait-online is a
oneshot system service (see systemd.service(5)), that waits for the network to be
configured. By default, it will wait for all links it is aware of
and which are managed by
to be fully configured or failed, and for at least one link to be online. Here, online means that
the link's operational state is equal or higher than "
degraded". The threshold
can be configured by
The following options are understood:
Network interface to wait for before deciding if the system is online. This
is useful when a system has several interfaces which will be configured, but a particular
one is necessary to access some network resources. When used, all other interfaces are ignored.
This option may be used more than once to wait for multiple network interfaces. When this
option is specified multiple times, then systemd-networkd-wait-online waits
for all specified interfaces to be online. Optinally, required minimum operational state can be
specified after a colon "
:". Please see
for possible operational states. If the operational state is not specified here, then
the value from
RequiredForOnline= in the corresponding
.network file is used if present, and "
Network interfaces to be ignored when deciding if the system is online. By default, only the loopback interface is ignored. This option may be used more than once to ignore multiple network interfaces.
Takes an operational state. Please see
for possible operational states. If set, the specified value overrides
RequiredForOnline= settings in
But this does not override operational states specified in
Even if several interfaces are in configuring state,
systemd-networkd-wait-online exits with success when at least one interface
becomes online. When this option is specified with
systemd-networkd-wait-online waits for one of the specified interfaces to be
online. This option is useful when some interfaces may not have carrier on boot.
Fail the service if the network is not online by the time the timeout elapses. A timeout of 0 disables the timeout. Defaults to 120 seconds.
Suppress log messages.