diff --git a/[refs] b/[refs]
index 5e82c8f7a994..723e4740361b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e8766fc86b34d44a8c55a2f9d71da69e091b1ca4
+refs/heads/master: 28d4488216645cd71402925cffde9528b0cfdb7e
diff --git a/trunk/net/ipv6/ipv6_sockglue.c b/trunk/net/ipv6/ipv6_sockglue.c
index ce794d6acb70..9a3697172d5e 100644
--- a/trunk/net/ipv6/ipv6_sockglue.c
+++ b/trunk/net/ipv6/ipv6_sockglue.c
@@ -458,6 +458,8 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
 	case IPV6_MULTICAST_LOOP:
 		if (optlen < sizeof(int))
 			goto e_inval;
+		if (val != valbool)
+			goto e_inval;
 		np->mc_loop = valbool;
 		retv = 0;
 		break;