#!/usr/bin/env bash

if [ ${MODE} == "start" ]
then
    set -ue
elif [ ${MODE} == "stop" ]
then
    set -u
else
    echo "$(basename ${0}): mode must be one of either 'start' or 'stop'" 1>&2
    exit 1
fi

case ${PHASE} in
    "pre-up")
        /usr/sbin/ip link add ${IFACE} type bridge
        /usr/sbin/ip link set ${IFACE} type bridge forward_delay 0

        /usr/sbin/sysctl -q -w net.ipv6.conf.br0.autoconf=0

        /usr/sbin/ip -4 address add {{ vpn_bridge_inet_address }}/{{ vpn_bridge_inet_prefixlen }} dev ${IFACE}
        /usr/sbin/ip -6 address add {{ vpn_bridge_inet6_address }}/{{ vpn_bridge_inet6_prefixlen }} dev ${IFACE} nodad
        ;;
    "post-up")
        ;;
    "pre-down")
        ;;
    "post-down")
        /usr/sbin/ip -6 address flush dev ${IFACE}
        /usr/sbin/ip -4 address flush dev ${IFACE}

        /usr/sbin/ip link delete ${IFACE}
        ;;
esac