Index: head/net-mgmt/ipcalc/Makefile
===================================================================
--- head/net-mgmt/ipcalc/Makefile	(revision 421621)
+++ head/net-mgmt/ipcalc/Makefile	(revision 421622)
@@ -1,27 +1,29 @@
 # Created by: ijliao
 # $FreeBSD$
 
 PORTNAME=	ipcalc
 PORTVERSION=	0.41
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	net-mgmt
 MASTER_SITES=	http://jodies.de/ipcalc-archive/
 DIST_SUBDIR=	ipcalc
 
 MAINTAINER=	kuriyama@FreeBSD.org
 COMMENT=	IP Calculator
 
 LICENSE=	GPLv2
+
+CONFLICTS_INSTALL=	gnu-ipcalc-[0-9]*
 
 PLIST_FILES=	bin/ipcalc
 NO_BUILD=	yes
 USES=		perl5 shebangfix
 
 SHEBANG_FILES=	ipcalc
 PATCH_SITES+=	${MASTER_SITES}
 PATCHFILES+=	patch-queue
 
 do-install:
 	${INSTALL_SCRIPT} ${WRKSRC}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin
 
 .include <bsd.port.mk>