Index: head/sys/net/if.c
===================================================================
--- head/sys/net/if.c
+++ head/sys/net/if.c
@@ -1122,6 +1122,9 @@
 	 * the work top-down for us.
 	 */
 	if (shutdown) {
+		/* Give interface users the chance to clean up. */
+		EVENTHANDLER_INVOKE(ifnet_departure_event, ifp);
+
 		/*
 		 * In case of a vmove we are done here without error.
 		 * If we would signal an error it would lead to the same