Index: head/net/intel-ix-kmod/Makefile
===================================================================
--- head/net/intel-ix-kmod/Makefile	(revision 500918)
+++ head/net/intel-ix-kmod/Makefile	(revision 500919)
@@ -1,22 +1,28 @@
 # Created by: Sergey Kozlov <skozlov@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	ix
 PORTVERSION=	3.3.6
 PORTREVISION=	1
 PORTEPOCH=	0
 MASTER_SITE_SUBDIR=	14688/eng
 
 MAINTAINER=	freebsd@intel.com
 COMMENT=	10 gigabit FreeBSD Base Driver for Intel(R) Network Connections
 
 MANPAGENAME=	ixgbe
 MANPAGELINKS=	ix if_ix if_ixgbe
 
 MAX_NETMAP_OSVERSION=	1199999  # Doesn't build w/NETMAP on 12
 
 MASTERDIR=	${.CURDIR}/../intel-ixl-kmod
 PKGDIR=		${.CURDIR}
 DISTINFO_FILE=	${.CURDIR}/distinfo
 
+OPTIONS_DEFINE=	SRIOV
+SRIOV_DESC=	Enable SR-IOV support (experimental)
+
+post-patch-SRIOV-on:
+	@${SED} -i '' 's|SRIOV_ENABLE = 0|SRIOV_ENABLE = 1|g' ${WRKSRC}/Makefile
+
 .include "${MASTERDIR}/Makefile"