--- v2.2.16/net/ipv4/udp.c	Sun Sep 17 21:19:10 2000
+++ linux/net/ipv4/udp.c	Mon Jun 26 21:04:34 2000
@@ -1133,6 +1133,8 @@
 			goto csum_error;
 #endif
   		udp_statistics.UdpNoPorts++;
+                printk(KERN_INFO "UDP: Port %d Unreachable sent to %s\n",
+                        ntohs(uh->dest),in_ntoa(saddr)); 
 		icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
 
 		/*