NAME¶
systemd-networkd-wait-online.service,
systemd-networkd-wait-online@.service, systemd-networkd-wait-online - Wait
for network to come online
SYNOPSIS¶
systemd-networkd-wait-online.service
systemd-networkd-wait-online@.service
/lib/systemd/systemd-networkd-wait-online
DESCRIPTION¶
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 systemd-networkd.service(8) 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 --operational-state= option.
The service systemd-networkd-wait-online.service invokes
systemd-networkd-wait-online without any options. Thus, it waits for
all managed interfaces to be configured or failed, and for at least one to
be online.
The service systemd-networkd-wait-online@.service takes an
interface name, and invokes systemd-networkd-wait-online with
-i and the specified interface name. Thus, wait for the specified
interface to be configured and online. For example,
systemd-networkd-wait-online@eth0.service waits for eth0 to be configured by
systemd-networkd and online.
OPTIONS¶
The following options are understood:
-i
INTERFACE[:MIN_OPERSTATE[:MAX_OPERSTATE]],
--interface=INTERFACE[:MIN_OPERSTATE[:MAX_OPERSTATE]]
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. Optionally, required minimum and
maximum operational states can be specified after a colon ":".
Please see
networkctl(1) 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 "degraded" otherwise.
--ignore=INTERFACE
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.
-o MIN_OPERSTATE[:MAX_OPERSTATE],
--operational-state=MIN_OPERSTATE[:MAX_OPERSTATE]
Takes a minimum operational state and an optional maximum
operational state. Please see
networkctl(1) for possible operational
states. If set, the specified value overrides
RequiredForOnline=
settings in .network files. But this does not override operational states
specified in
--interface= option.
-4, --ipv4
Waiting for an IPv4 address of each network interface to
be configured. If this option is specified with
--any, then
systemd-networkd-wait-online exits with success when at least one
interface becomes online and has an IPv4 address. If the required minimum
operational state is below "routable", then each link (or at least
one link with
--any) must have an IPv4 link-local or routable address.
If the required minimum operational state is "routable", then each
link must have an IPv4 routable address.
If neither --ipv4 nor --ipv6 is specified, then the
value from RequiredFamilyForOnline= in the corresponding .network
file is used if present.
-6, --ipv6
Waiting for an IPv6 address of each network interface to
be configured. If this option is specified with
--any, then
systemd-networkd-wait-online exits with success when at least one
interface becomes online and has an IPv6 address. If the required minimum
operational state is below "routable", then each link (or at least
one link with
--any) must have an IPv6 link-local or routable address.
If the required minimum operational state is "routable", then each
link must have an IPv6 routable address.
If neither --ipv4 nor --ipv6 is specified, then the
value from RequiredFamilyForOnline= in the corresponding .network
file is used if present.
--any
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
--interface=, then 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.
--timeout=SECS
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.
-q, --quiet
Suppress log messages.
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
