--- netkit-rwho-0.17-pre20000412/rwhod/rwhod.c.fixbcast	Fri Feb  2 17:03:03 2001
+++ netkit-rwho-0.17-pre20000412/rwhod/rwhod.c	Fri Feb  2 17:03:38 2001
@@ -533,6 +533,11 @@
 			continue;
 		}
 		strcpy(np->n_name, ifr->ifr_name);
+		if (strchr(np->n_name, ':')) {
+		  /* virtual interface found */
+		  free((char *) np);
+		  continue;
+		}
 		np->n_addrlen = sizeof (ifr->ifr_addr);
 		np->n_addr = malloc(np->n_addrlen);
 		if (np->n_addr == NULL) {