Clear the whole IPCB, this clears also IPCB(skb)->flags.

Signed-off-by: Guillaume Chazarain <guichaz@yahoo.fr>
---

 ip_input.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -429,7 +429,7 @@ int ip_rcv(struct sk_buff *skb, struct n
 	}
 
 	/* Remove any debris in the socket control block */
-	memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options));
+	memset(IPCB(skb), 0, sizeof(struct inet_skb_parm));
 
 	return NF_HOOK(PF_INET, NF_IP_PRE_ROUTING, skb, dev, NULL,
 		       ip_rcv_finish);