config_get proto "$cfg" proto
[ -z "$proto" ] && { echo "interface not found."; exit; }
+# call interface stop handler
+( type "stop_interface_$proto" ) >/dev/null 2>/dev/null && eval "stop_interface_$proto '$cfg'"
+
# make sure all locks are removed
for lock in "/var/lock/dhcp-$iface" "/var/lock/ppp-$iface"; do
[ -f "$lock" ] && {