+PPP_IFACE="$1"
+PPP_TTY="$2"
+PPP_SPEED="$3"
+PPP_LOCAL="$4"
+PPP_REMOTE="$5"
+PPP_IPPARAM="$6"
+export PPP_IFACE PPP_TTY PPP_SPEED PPP_LOCAL PPP_REMOTE PPP_IPPARAM
+[ -z "$PPP_IPPARAM" ] || {
+ env -i ACTION="ifdown" INTERFACE="$PPP_IPPARAM" DEVICE="$PPP_IFACE" PROTO=ppp /sbin/hotplug-call "iface"
+
+ # remove the interface's network state
+ FILE=/var/state/network.$$
+ grep -v "^config_set '$PPP_IPPARAM' " /var/state/network > "$FILE"
+ mv "$FILE" /var/state/network
+}