diff -ruN heretic.old/files/patch-i_udp.c /usr/ports/games/heretic/files/patch-i_udp.c
--- heretic.old/files/patch-i_udp.c	Thu Jan  1 01:00:00 1970
+++ /usr/ports/games/heretic/files/patch-i_udp.c	Sun Sep 29 12:42:10 2002
@@ -0,0 +1,12 @@
+--- i_udp.c.orig	Sun Sep 29 12:40:33 2002
++++ i_udp.c	Sun Sep 29 12:41:24 2002
+@@ -30,6 +30,9 @@
+  */
+ 
+ boolean server = 0;
++#if !defined(IPPORT_USERRESERVED)
++#define IPPORT_USERRESERVED	5000
++#endif
+ 
+ static int DOOMPORT = (IPPORT_USERRESERVED +0x1d );
+