#!/bin/sh

IFACE="gre0"

TUNNEL="172.31.2.1 172.31.2.2"

OPTS=""
IP="10.10.10.1/24 10.10.10.2"

[ -z "$IFACE" ] && exit

echo "Config GRE network interface $IFACE ..."

ifconfig $IFACE create || exit
ifconfig $IFACE tunnel $TUNNEL
if [ -n "$IP" ]; then
	ifconfig $IFACE inet $IP
fi
ifconfig $IFACE $OPTS up