Index: in.c
===================================================================
RCS file: /private/FreeBSD/src/sys/netinet/in.c,v
retrieving revision 1.74
diff -u -p -r1.74 in.c
--- in.c	26 Feb 2004 04:27:55 -0000	1.74
+++ in.c	29 Mar 2004 19:43:21 -0000
@@ -195,6 +195,7 @@ in_control(so, cmd, data, ifp, td)
 	struct in_ifaddr *oia;
 	struct in_aliasreq *ifra = (struct in_aliasreq *)data;
 	struct sockaddr_in oldaddr;
+	struct in_multi *inm;
 	int error, hostIsNew, iaIsNew, maskIsNew, s;
 
 	iaIsNew = 0;
@@ -449,6 +450,8 @@ in_control(so, cmd, data, ifp, td)
 	TAILQ_REMOVE(&ifp->if_addrhead, &ia->ia_ifa, ifa_link);
 	TAILQ_REMOVE(&in_ifaddrhead, ia, ia_link);
 	LIST_REMOVE(ia, ia_hash);
+	while ((inm = LIST_FIRST(&ia->ia_multiaddrs)) != NULL)
+		in_delmulti(inm);
 	IFAFREE(&ia->ia_ifa);
 	splx(s);