--- zzzz-none-000/linux-3.10.107/include/net/rtnetlink.h	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/include/net/rtnetlink.h	2021-11-10 11:53:56.000000000 +0000
@@ -19,7 +19,7 @@
 
 static inline int rtnl_msg_family(const struct nlmsghdr *nlh)
 {
-	if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))
+	if (nlmsg_len(nlh) >= (int)sizeof(struct rtgenmsg))
 		return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;
 	else
 		return AF_UNSPEC;