hi, I am recieveing the packet on eth1 and want to send it through eth2. I've written code in netif_recieve_skb function .This code changes the mac header in sk_buff structure so that it can be send through other interface card.But when i call ip_dev_find fucntion to get the second interface structure ,NULL is returned.I checked the ip of second ethernet card and it was similar to one passed to ip_dev_find fucntion,then why NULL is being returned? Actually if i get the correct dev structure from ip_dev_find fucntion then i'll assign that dev structure to current skbuff->dev and call dev_queue_xmit fucntion,so that it transmitted through second interface card.Is mine approach correct? shahzad