systemd-networkd-wait-online is a one-shot system service 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 systemd-
networkd.service(8) to be fully configured or failed, and for at least
one link to gain a carrier.
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. This option may be used more than once to
wait for multiple network interfaces. When used, all other
interfaces are ignored.
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
Fail the service if the network is not online by the time the
timeout elapses. A timeout of 0 disables the timeout. Defaults to
systemd 229 SYSTEMD-NETWORKD-WAIT-ONLINE.SERVICE(8)
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