--- uquake/net_udp.c.orig	Wed Jan 19 03:01:05 2000
+++ uquake/net_udp.c	Mon Apr  2 14:19:31 2001
@@ -94,6 +94,13 @@
 	// determine my name & address
 	gethostname(buff, MAXHOSTNAMELEN);
 	local = gethostbyname(buff);
+
+	if (!local)
+	{
+		printf("Cannot get address for %s: UDP disabled",
+			buff);
+		return -1;
+	}
 	myAddr = *(int *)local->h_addr_list[0];
 
 	// if the quake hostname isn't set, set it to the machine name