diff --git a/net/mtr/Makefile b/net/mtr/Makefile
index 42656285bc5..4f63712c477 100644
--- a/net/mtr/Makefile
+++ b/net/mtr/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.4 1999/09/23 20:50:03 jakob Exp $
+# $OpenBSD: Makefile,v 1.5 2000/01/24 15:29:44 itojun Exp $
 
 DISTNAME=	mtr-0.41
 CATEGORIES=	net
@@ -8,6 +8,11 @@ MAINTAINER=     jakob@openbsd.org
 MASTER_SITES=	ftp://ftp.bitwizard.nl/mtr/ \
 		ftp://ftp.lysator.liu.se/mirror/unix/mtr/
 
+PATCHFILES=	mtr-041-v6-19990903b.diff.gz
+PATCH_SITES=	ftp://ftp.kame.net/pub/kame/misc/
+PATCH_DIST_STRIP=	-p1
+
 GNU_CONFIGURE=	yes
+CONFIGURE_ARGS+=	--enable-ipv6
 
 .include <bsd.port.mk>
diff --git a/net/mtr/files/md5 b/net/mtr/files/md5
index cab41eff02b..81b613b6dd6 100644
--- a/net/mtr/files/md5
+++ b/net/mtr/files/md5
@@ -1,3 +1,6 @@
 MD5 (mtr-0.41.tar.gz) = fd081c7c27fedfcf9de0dc04e632475b
+MD5 (mtr-041-v6-19990903b.diff.gz) = 58064f7b286235774ea6f18e1b2aff64
 RMD160 (mtr-0.41.tar.gz) = 105d6bbd7444b13e9bec99928f700cb5cc635904
+RMD160 (mtr-041-v6-19990903b.diff.gz) = 08ecd0aa452028f058b91301613a3d4264acaee2
 SHA1 (mtr-0.41.tar.gz) = 5ef65aac603166305e30184662e9a75200644299
+SHA1 (mtr-041-v6-19990903b.diff.gz) = dd149230c8194f856d5cae8ec1dfcf70c3a564cb