$NetBSD: patch-bl,v 1.1 2008/06/07 23:58:11 tonnerre Exp $

--- kdc/network.c.orig	2005-07-12 22:59:51.000000000 +0200
+++ kdc/network.c
@@ -748,6 +748,8 @@ static void process_packet(struct connec
 	com_err(prog, retval, "while dispatching (udp)");
 	return;
     }
+    if (response == NULL)
+	return;
     cc = sendto(port_fd, response->data, (socklen_t) response->length, 0,
 		(struct sockaddr *)&saddr, saddr_len);
     if (cc == -1) {
