--- Makefile	2010-09-24 18:51:56.000000000 +0200
+++ Makefile	2010-11-07 11:10:54.000000000 +0100
@@ -26,7 +26,8 @@ 
 		POSTGRESQL "Enable PostgreSQL support" off \
 		PRELUDE "Enable Prelude NIDS integration" off \
 		PERPROFILE "Enable Performance Profiling" off \
-		SNORTSAM "Enable output plugin to SnortSam" off
+		SNORTSAM "Enable output plugin to SnortSam" off \
+		IPV6 "Enable IPv6 support" off
 
 USE_RC_SUBR=	snort.sh
 SUB_FILES=	pkg-message
@@ -131,6 +132,10 @@ 
 PATCHFILES+=snortsam-2.8.6.diff.gz:snortsam
 .endif
 
+.if defined(WITH_IPV6)
+CONFIGURE_ARGS+=	--enable-ipv6
+.endif
+
 post-patch:
 .if defined(NOPORTDOCS)
 	@${REINPLACE_CMD} '/SUBDIRS = /s/doc//' ${WRKSRC}/Makefile.in