Penguin

ifupdown

ifupdown

NAME SYNOPSIS DESCRIPTION OPTIONS NOTES FILES AUTHOR SEE ALSO


NAME

ifup - bring a network interface up

ifdown - take a network interface down

SYNOPSIS

ifup [-sinv? [--interfaces=__''file''__? [--no-act? [--verbose? [-a?

ifdown [-sinv? [--interfaces=__''file''__? [--no-act? [--verbose? [-a?

DESCRIPTION

The ifup and ifdown commands may be used to configure (or, respectively, deconfigure) network interfaces, based on descriptions of the interfaces entered into the file /etc/network/interfaces.

OPTIONS

These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below.

-h, --help

Show summary of options.

-V, --version

Show copyright and version information.

-a, --all

Affect all interfaces marked auto.

-i file, --interfaces file

Read interface definitions from a different file.

-v, --verbose

Show commands being executed.

-n, --no-act

Don't actually execute the commands (this doesn't disable mappings, however)

--no-mappings

Don't run any mappings.

--force

Force de/configuration of interface.

NOTES

The ifup and ifdown programs don't actually know anything about configuring interfaces themselves but instead invoke lower-level utilities such as ifconfig and route to do the actual dirtywork. The main advantages to using ifup and ifdown instead of calling the lower-level utilities directy is the ability to keep all your interface specifications in a single (easily parsable) file, and to not have to deal with the various idiosyncracies of the lower-level commands.

FILES

/etc/network/interfaces

Descriptions of all the network interfaces the system has.

/etc/network/ifstate

Current state of network interfaces.

AUTHOR

The ifupdown suite written by Anthony Towns

SEE ALSO

interfaces(5), ifconfig(8),


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