diff --git a/sys/netinet/in.c b/sys/netinet/in.c
index c2d64a0e5ab5..4ab2946c782b 100644
--- a/sys/netinet/in.c
+++ b/sys/netinet/in.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: in.c,v 1.77 2002/06/09 16:33:38 itojun Exp $	*/
+/*	$NetBSD: in.c,v 1.78 2002/09/04 00:03:58 itojun Exp $	*/
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -102,7 +102,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: in.c,v 1.77 2002/06/09 16:33:38 itojun Exp $");
+__KERNEL_RCSID(0, "$NetBSD: in.c,v 1.78 2002/09/04 00:03:58 itojun Exp $");
 
 #include "opt_inet.h"
 #include "opt_inet_conf.h"
@@ -792,6 +792,8 @@ in_ifinit(ifp, ia, sin, scrub)
 	u_int32_t i = sin->sin_addr.s_addr;
 	struct sockaddr_in oldaddr;
 	int s = splnet(), flags = RTF_UP, error;
+	int ifacount;
+	struct ifaddr *ifa;
 
 	/*
 	 * Set up new addresses.
@@ -807,7 +809,15 @@ in_ifinit(ifp, ia, sin, scrub)
 	 * if this is its first address,
 	 * and to validate the address if necessary.
 	 */
-	if (ifp->if_ioctl &&
+	ifacount = 0;
+	TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
+		if (ifa->ifa_addr == NULL)
+			continue;
+		if (ifa->ifa_addr->sa_family != AF_INET)
+			continue;
+		ifacount++;
+	}
+	if (ifacount <= 1 && ifp->if_ioctl &&
 	    (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (caddr_t)ia)))
 		goto bad;
 	splx(s);