diff --git a/[refs] b/[refs]
index 342e5cf43015..f7a0f3cb782f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 163faf31778e536ac6125bc8b14f4667adc910e9
+refs/heads/master: d135c522f1234f62e81be29cebdf59e9955139ad
diff --git a/trunk/net/ipv6/tcp_ipv6.c b/trunk/net/ipv6/tcp_ipv6.c
index 86cfe6005f40..98256cf72f9d 100644
--- a/trunk/net/ipv6/tcp_ipv6.c
+++ b/trunk/net/ipv6/tcp_ipv6.c
@@ -1383,6 +1383,10 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 	tcp_mtup_init(newsk);
 	tcp_sync_mss(newsk, dst_mtu(dst));
 	newtp->advmss = dst_metric_advmss(dst);
+	if (tcp_sk(sk)->rx_opt.user_mss &&
+	    tcp_sk(sk)->rx_opt.user_mss < newtp->advmss)
+		newtp->advmss = tcp_sk(sk)->rx_opt.user_mss;
+
 	tcp_initialize_rcv_mss(newsk);
 	if (tcp_rsk(req)->snt_synack)
 		tcp_valid_rtt_meas(newsk,