#!/bin/sh

case $1 in
interface-up)
	ip route flush proto 42 dev $NHRP_INTERFACE
	ip neigh flush dev $NHRP_INTERFACE
	;;
peer-register)
	;;
peer-up)
	if [ -n "$NHRP_DESTMTU" ]; then
		ARGS=`ip route get $NHRP_DESTNBMA from $NHRP_SRCNBMA | head -1`
		ip route add $ARGS proto 42 mtu $NHRP_DESTMTU
	fi
	echo "Create link from $NHRP_SRCADDR ($NHRP_SRCNBMA) to $NHRP_DESTADDR ($NHRP_DESTNBMA)"
	racoonctl establish-sa -w isakmp inet $NHRP_SRCNBMA $NHRP_DESTNBMA || exit 1
	racoonctl establish-sa -w esp inet $NHRP_SRCNBMA $NHRP_DESTNBMA gre || exit 1 
	;;
peer-down)
	echo "Delete link from $NHRP_SRCADDR ($NHRP_SRCNBMA) to $NHRP_DESTADDR ($NHRP_DESTNBMA)"
	if [ "$NHRP_PEER_DOWN_REASON" != "lower-down" ]; then
		racoonctl delete-sa isakmp inet $NHRP_SRCNBMA $NHRP_DESTNBMA
	fi
	ip route del $NHRP_DESTNBMA src $NHRP_SRCNBMA proto 42
	;;
route-up)
	echo "Route $NHRP_DESTADDR/$NHRP_DESTPREFIX is up"
	ip route replace $NHRP_DESTADDR/$NHRP_DESTPREFIX proto 42 via $NHRP_NEXTHOP dev $NHRP_INTERFACE
	ip route flush cache
	;;
route-down)
	echo "Route $NHRP_DESTADDR/$NHRP_DESTPREFIX is down"
	ip route del $NHRP_DESTADDR/$NHRP_DESTPREFIX proto 42
	ip route flush cache
	;;
esac

exit 0