xl2tpd: Enable netifd notification teardown_on_l3_link_down

Set teardown_on_l3_link_down notifying netifd xl2tpd wants to be
teared down when layer3 link loss is detected

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

net/xl2tpd/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=xl2tpd
 PKG_VERSION:=devel-20151125
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_MAINTAINER:=Yousong Zhou <yszhou4tech@gmail.com>
 PKG_LICENSE:=GPL-2.0
 PKG_LICENSE_FILES:=LICENSE

net/xl2tpd/files/l2tp.sh

@@ -21,6 +21,7 @@ proto_l2tp_init_config() {
 	available=1
 	no_device=1
 	no_proto_task=1
+	teardown_on_l3_link_down=1
 }
 
 proto_l2tp_setup() {