diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 7b4908c..91f6233 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -121,6 +121,9 @@
 	    !ipv6_prefix_equal(&fl->fl6_src, &r->src.addr, r->src.plen))
 		return 0;
 
+	if (r->tclass && r->tclass != ((ntohl(fl->fl6_flowlabel) >> 20) & 0xff))
+		return 0;
+
 	return 1;
 }