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priority: 400
help: Disable IPv6 forwarding on all interfaces
# Disable IPv6 forwarding for all interfaces we currently have,
# and set default such that it will be disabled on any new interfaces
# that come up after this.
#
create:
sudo sh -c "echo 0 > /proc/sys/net/ipv6/conf/all/forwarding"
sudo sh -c "echo 0 > /proc/sys/net/ipv6/conf/default/forwarding"
# Re-enable IPv6 forwarding globally. But setting the global
# forwarding parameter under "all" has the side effect of setting the
# per-interface forwarding parameter for all interfaces. Users may
# disable forwarding per-interface, so we have to restore the state of
# the per-interface parameter here. A per-interface flag file under
# /var/run/vyatta/ tells us if forwarding is disabled on specific
# interfaces. Restore default value of the forwarding parameter under
# "default" so that any new interfaces that come up after this will
# have forwarding enabled.
#
delete:
sudo sh -c "echo 1 > /proc/sys/net/ipv6/conf/all/forwarding"
cd /proc/sys/net/ipv6/conf
for i in * ; do
if [[ "$i" == "default" ]] ||
[[ "$i" == "all" ]] ||
[[ ! -d "$i" ]]; then
continue
fi
if [[ -e /var/run/vyatta/ipv6_no_fwd.$i ]]; then
sudo sh -c "echo 0 > $i/forwarding"
fi
done
sudo sh -c "echo 1 > /proc/sys/net/ipv6/conf/default/forwarding"
#
# If router advertisements were configured while global IPv6
# forwarding was disabled, we will need to start the radvd daemon
# now.
running=$(pgrep -n radvd)
if [[ -z "$running" ]] &&
[[ -e /etc/radvd.conf ]] &&
[[ -x /etc/init.d/radvd ]]; then
/etc/init.d/radvd start
fi
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