ppp: add unconditional autoipv6-trigger

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42860 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/network/services/ppp/files/lib/netifd/ppp-up

@@ -19,3 +19,12 @@ proto_send_update "$PPP_IPPARAM"
 		[ -x "$SCRIPT" ] && "$SCRIPT" "$@"
 	done
 }
+
+if [ -n "$AUTOIPV6" ]; then
+	json_init
+	json_add_string name "${PPP_IPPARAM}_dhcpv6"
+	json_add_string ifname "@$PPP_IPPARAM"
+	json_add_string proto "dhcpv6"
+	json_close_object
+	ubus call network add_dynamic "$(json_dump)"
+fi

package/network/services/ppp/files/ppp.sh

@@ -30,7 +30,7 @@ ppp_generic_setup() {
 		ipv6=""
 	elif [ -z "$ipv6" -o "$ipv6" = auto ]; then
 		ipv6=1
-		proto_export "IPV6IFACE=${config}6"
+		proto_export "AUTOIPV6=1"
 	fi
 
 	if [ "${demand:-0}" -gt 0 ]; then