diff --git a/sys/netinet/ip_icmp.c b/sys/netinet/ip_icmp.c
index d4eb5ca816dd..d82d1d6e8002 100644
--- a/sys/netinet/ip_icmp.c
+++ b/sys/netinet/ip_icmp.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)ip_icmp.c	8.2 (Berkeley) 1/4/94
- *	$Id: ip_icmp.c,v 1.32 1998/12/03 20:23:20 dillon Exp $
+ *	$Id: ip_icmp.c,v 1.33 1998/12/04 04:21:25 dillon Exp $
  */
 
 #include <sys/param.h>
@@ -663,6 +663,7 @@ icmp_send(m, opts)
 	icp->icmp_cksum = in_cksum(m, ip->ip_len - hlen);
 	m->m_data -= hlen;
 	m->m_len += hlen;
+	m->m_pkthdr.rcvif = (struct ifnet *)0;
 #ifdef ICMPPRINTFS
 	if (icmpprintfs) {
 		char buf[4 * sizeof "123"];