-proto=$(nvram get ${type}_proto)
-if_valid $if && $DEBUG ifconfig $if down
-kill $(cat /var/run/${if}.pid 2>&-) 2>&-
-killall ifup.$proto >&- 2>&-
-case "$proto" in
- pptp|pppoe) killall pppd >&- 2>&- ;;
- static) env -i ACTION="ifdown" INTERFACE="$if" PROTO=static /sbin/hotplug "iface" ;;
+
+case "$if_proto" in
+ pppoa) hotplug_dev unregister atm0; exit 0 ;;
+ pppoe)
+ [ "$(nvram get pppoe_atm)" = 1 ] && {
+ hotplug_dev unregister atm0
+ exit
+ }
+ ;;