freebsd/etc/rc.d/faith

#!/bin/sh
# $FreeBSD$
#

# PROVIDE: faith
# REQUIRE: netif routing
# KEYWORD: nojail

. /etc/rc.subr
. /etc/network.subr

name="faith"
start_cmd="faith_up"
stop_cmd="faith_down"

faith_up()
{
	case ${ipv6_faith_prefix} in
	[Nn][Oo] | '')
		;;
	*)
		echo "Configuring IPv6-to-IPv4 TCP relay capturing interface:" \
		    " faith0."
		${SYSCTL_W} net.inet6.ip6.keepfaith=1
		ifconfig faith0 create >/dev/null 2>&1
		ifconfig faith0 up
		for prefix in ${ipv6_faith_prefix}; do
			prefixlen=`expr "${prefix}" : ".*/\(.*\)"`
			case ${prefixlen} in
			'')
				prefixlen=96
				;;
			*)
				prefix=`expr "${prefix}" : \
					     "\(.*\)/${prefixlen}"`
				;;
			esac
			route add -inet6 ${prefix} -prefixlen ${prefixlen} ::1
			route change -inet6 ${prefix} -prefixlen ${prefixlen} \
				-ifp faith0
		done
		if [ -z "${rc_quiet}" ]; then
			ifconfig faith0
		fi
		;;
	esac
}

faith_down()
{
	echo "Removing IPv6-to-IPv4 TCP relay capturing interface: faith0."
	ifconfig faith0 destroy
	${SYSCTL_W} net.inet6.ip6.keepfaith=0

	case ${ipv6_faith_prefix} in
	[Nn][Oo] | '')
		;;
	*)
		for prefix in ${ipv6_faith_prefix}; do
			prefixlen=`expr "${prefix}" : ".*/\(.*\)"`
			case ${prefixlen} in
			'')
				prefixlen=96
				;;
			*)
				prefix=`expr "${prefix}" : \
					     "\(.*\)/${prefixlen}"`
				;;
			esac
			route delete -inet6 ${prefix} -prefixlen ${prefixlen}
		done
		;;
	esac
}

load_rc_config $name
run_rc_command "$1"