ifdown version 0.8.10ubuntu1.2 Copyright (c) 1999-2009 Anthony Towns 2010-2015 Andrew Shadura 2015 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

Usage: ifdown <options> <ifaces...> Options: -h, --help this help -V, --version copyright and version information -a, --all process all interfaces marked "auto" --allow CLASS ignore non-"allow-CLASS" interfaces -i, --interfaces FILE use FILE for interface definitions -X, --exclude PATTERN exclude interfaces from the list of interfaces to operate on by a PATTERN -n, --no-act print out what would happen, but don't do it (note that this option doesn't disable mappings) -v, --verbose print out what would happen before doing it -o OPTION=VALUE set OPTION to VALUE as though it were in /etc/network/interfaces --no-mappings don't run any mappings --no-scripts don't run any hook scripts --no-loopback don't act specially on the loopback device --force force de/configuration --ignore-errors ignore errors