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#!/bin/sh /etc/rc.common
START=46
STOP=46

start_service() {
	local section="$1"
	
	include /lib/network
	scan_interfaces
	config_load /var/state/network

	config_get LAN lan ifname
        config_get tnlifname "$section" tnlifname
	config_get remoteip4 "$section" remoteip4
	config_get localip4 "$section" localip4
	config_get localip6 "$section" localip6
	config_get prefix "$section" prefix

	ip tunnel add $tnlifname mode sit remote $remoteip4 local $localip4 ttl 255
	ifconfig $tnlifname up
	ip addr add $localip6 dev $tnlifname
	ip route add ::/0 dev $tnlifname
	ip route add 2000::/3 dev $tnlifname
	ip -6 addr add $prefix dev $LAN
}

stop_service() {
	local section="$1"
	
	include /lib/network
	scan_interfaces
	config_load /var/state/network

	config_get LAN lan ifname
        config_get tnlifname "$section" tnlifname
	config_get remoteip4 "$section" remoteip4
	config_get localip4 "$section" localip4
	config_get localip6 "$section" localip6
	config_get prefix "$section" prefix

	ip -6 addr del $prefix dev $LAN
	ip -6 ro del 2000::/3 dev $tnlifname
	ip -6 ro del ::/0 dev $tnlifname
	ip addr del $localip6 dev $tnlifname
	ifconfig $tnlifname down
	ip tunnel del $tnlifname
}
start() {
	if ! [ -f /proc/net/if_inet6 ]; then
		echo "IPv6 not enabled, install kmod-ipv6";
		exit 1;
	fi
	if ! [ -x /sbin/ip ]; then
		echo "ip is required to setup the tunnel";
		exit 1;
	fi
	config_load "6tunnel"
	config_foreach start_service 6tunnel
}

stop () {
	config_load "6tunnel"
	config_foreach stop_service 6tunnel
}