diff --git a/lib/libnetlink.c b/lib/libnetlink.c
index c581e11..878911e 100644
--- a/lib/libnetlink.c
+++ b/lib/libnetlink.c
@@ -94,6 +94,9 @@
 	struct {
 		struct nlmsghdr nlh;
 		struct rtgenmsg g;
+		__u16 align_rta;	/* attribute has to be 32bit aligned */
+		struct rtattr ext_req;
+		__u32 ext_filter_mask;
 	} req;
 
 	memset(&req, 0, sizeof(req));
@@ -104,6 +107,10 @@
 	req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
 	req.g.rtgen_family = family;
 
+	req.ext_req.rta_type = IFLA_EXT_MASK;
+	req.ext_req.rta_len = RTA_LENGTH(sizeof(__u32));
+	req.ext_filter_mask = RTEXT_FILTER_VF;
+
 	return send(rth->fd, (void*)&req, sizeof(req), 0);
 }