--- linux-2.6.10-bk14/drivers/net/tun.c	2005-01-10 16:28:48.000000000 +0100
+++ linux-2.6.10-work/drivers/net/tun.c	2005-01-11 23:05:56.759691345 +0100
@@ -92,6 +92,7 @@
 			goto drop;
 	}
 	skb_queue_tail(&tun->readq, skb);
+	dev->trans_start = jiffies;
 
 	/* Notify and wake up reader process */
 	if (tun->flags & TUN_FASYNC)
@@ -240,6 +241,7 @@
 		skb->ip_summed = CHECKSUM_UNNECESSARY;
  
 	netif_rx_ni(skb);
+	tun->dev->last_rx = jiffies;
    
 	tun->stats.rx_packets++;
 	tun->stats.rx_bytes += len;