diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index bf69e58..750db57 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1107,6 +1107,28 @@
 			return -EINVAL;
 	}
 
+	if (tb[IFLA_AF_SPEC]) {
+		struct nlattr *af;
+		int rem, err;
+
+		nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
+			const struct rtnl_af_ops *af_ops;
+
+			if (!(af_ops = rtnl_af_lookup(nla_type(af))))
+				return -EAFNOSUPPORT;
+
+			if (!af_ops->set_link_af)
+				return -EOPNOTSUPP;
+
+			if (af_ops->validate_link_af) {
+				err = af_ops->validate_link_af(dev,
+							tb[IFLA_AF_SPEC]);
+				if (err < 0)
+					return err;
+			}
+		}
+	}
+
 	return 0;
 }
 
@@ -1356,12 +1378,9 @@
 			const struct rtnl_af_ops *af_ops;
 
 			if (!(af_ops = rtnl_af_lookup(nla_type(af))))
-				continue;
+				BUG();
 
-			if (!af_ops->parse_link_af)
-				continue;
-
-			err = af_ops->parse_link_af(dev, af);
+			err = af_ops->set_link_af(dev, af);
 			if (err < 0)
 				goto errout;