-#!/bin/ash
+#!/bin/sh
+# Copyright (C) 2006 OpenWrt.org
+
[ $# = 0 ] && { echo " $0 <group>"; exit; }
. /etc/functions.sh
-. /etc/network.overrides
-[ "$FAILSAFE" != "true" -a -e /etc/config/network ] && . /etc/config/network
-type=$1
+. /etc/config/network
+
debug "### ifdown $type ###"
-if=$(nvram get ${type}_ifname)
-proto=$(nvram get ${type}_proto)
-if_valid $if && $DEBUG ifconfig $if down
-kill $(cat /var/run/${if}.pid 2>&-) 2>&-
-[ "$if" = "ppp0" ] && killall pppd
-killall ifup.$proto >&- 2>&-
+type=$1
+
+eval "if_proto=\"\${${type}_proto}\""
+eval "if=\"\${${type}_ifname}\""
+[ "${if%%[0-9]}" = "ppp" ] && eval "if=\"\${${type}_device}\""
+
+case "$if_proto" in
+ pppoa) hotplug_dev unregister atm0; exit 0 ;;
+ ""|none) exit 0;;
+esac
+
+hotplug_dev unregister "$if"