#!/bin/sh

set -e

if [ ! -f "$2" ]; then
        echo "usage: $(basename "$0") FILE"
        exit 1
fi

. "$(readlink -f "$2")"

DEV="omr-6in4-$(basename "$2")"

if [ "$1" = "start" ]; then
        [ -n "$(ip tunnel show ${DEV})" ] && ip tunnel del ${DEV} 2>&1 >/dev/null
        ip tunnel add ${DEV} mode sit remote ${REMOTEIP} local ${LOCALIP}
        ip -6 addr add ${LOCALIP6} dev ${DEV}
        ip link set ${DEV} up
        [ -n "$ULA" ] && ip route replace ${ULA} via $(echo ${REMOTEIP6} | cut -d/ -f1) dev ${DEV}
fi
if [ "$1" = "stop" ]; then
        ip tunnel del ${DEV}
fi