diff -ruN --exclude=CVS /usr/ports/games/tetrinet.orig/Makefile /usr/ports/games/tetrinet/Makefile
--- /usr/ports/games/tetrinet.orig/Makefile	Mon May  2 14:58:31 2005
+++ /usr/ports/games/tetrinet/Makefile	Fri Dec  1 12:49:17 2006
@@ -7,7 +7,7 @@
 
 PORTNAME=	tetrinet
 PORTVERSION=	0.11
-CATEGORIES=	games net
+CATEGORIES=	games net ipv6
 MASTER_SITES=	http://tetrinet.or.cz/download/
 
 MAINTAINER=	ports@FreeBSD.org