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clatd/scripts/clatd.networkmanager
Tore Anderson fb4587bfd6 nm-dispatcher: only act on iface up/down events
Ensure other events (like hostname changes, DHCP lease renewals, etc.)
are ignored as they are very unlikely to be relevant for clatd.
2016-03-28 08:26:20 +02:00

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#!/bin/sh
#
# clatd dispatcher script for NetworkManager
#
# Install it to: /etc/NetworkManager/dispatcher.d/50-clatd
#
# Written by Tore Anderson <tore@fud.no>
#
# Newer NetworkManager versions will run the dispatcher scripts once
# a new unmanaged interface shows up, including the 'clat' interface
# created by clatd/TAYGA. So if we're being called due to our own
# interface showing up, do nothing, otherwise we will end up
# committing suicide from the restarts below
[ "$DEVICE_IFACE" = "clat" ] && exit 0
# We're only acting on interface "up" or "down" events. NM will run the
# dispatcher scripts for other events we're not interested in, like the
# hostname being set or a DHCP lease being renewed. Ignore those.
[ "$2" != "up" ] && [ "$2" != "down" ] && exit 0
# We simply restart clatd in all situations, as no matter if an interface
# goes up or down, it may mean that the PLAT device changes, it may mean
# native IPv4 appearing or disappearing, or it may mean that DNS64 became
# available or unavailable...it's far easier to simply restart always and
# start from scratch than to figure out if a restart is truly necessary
# systemd-based distros
if test -x /usr/bin/systemctl; then
/usr/bin/systemctl restart clatd.service
fi
# upstart-based distros
if test -x /sbin/initctl; then
/sbin/initctl restart clatd
fi