diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index a585d45..5fb8d7e 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2621,7 +2621,7 @@
 		struct rtattr *attr = (void *)nlh + NLMSG_ALIGN(min_len);
 
 		while (RTA_OK(attr, attrlen)) {
-			unsigned int flavor = attr->rta_type;
+			unsigned int flavor = attr->rta_type & NLA_TYPE_MASK;
 			if (flavor) {
 				if (flavor > rta_max[sz_idx])
 					return -EINVAL;