--- linux-2.4.14vanilla/drivers/net/8139too.c	Fri Oct 19 17:32:28 2001
+++ linux-2.4.14/drivers/net/8139too.c	Wed Jan 28 18:27:45 2004
@@ -1765,6 +1765,9 @@
 	assert (tp->tx_info[entry].skb == NULL);
 	assert (tp->tx_info[entry].mapping == 0);
 
+	if(skb->len < ETH_ZLEN)
+	    memset(tp->tx_buf[entry], 0, ETH_ZLEN);
+
 	tp->tx_info[entry].skb = skb;
 	if ( !((unsigned long)skb->data & 3) && skb_shinfo(skb)->nr_frags == 0 &&
 			skb->ip_summed != CHECKSUM_HW) {
--- linux-2.4.14vanilla/drivers/net/8390.c	Sun Sep 30 21:26:06 2001
+++ linux-2.4.14/drivers/net/8390.c	Thu Jan 29 09:26:40 2004
@@ -270,7 +270,8 @@
 	struct ei_device *ei_local = (struct ei_device *) dev->priv;
 	int length, send_length, output_page;
 	unsigned long flags;
-
+	char scratch[ETH_ZLEN];
+	
 	length = skb->len;
 
 	/* Mask interrupts from the ethercard. 
@@ -341,7 +342,15 @@
 	 * trigger the send later, upon receiving a Tx done interrupt.
 	 */
 
-	ei_block_output(dev, length, skb->data, output_page);
+	if(length == send_length)
+	    ei_block_output(dev, length, skb->data, output_page);
+	else
+	{
+	    memset(scratch, 0, ETH_ZLEN);
+	    memcpy(scratch, skb->data, skb->len);
+	    ei_block_output(dev, ETH_ZLEN, scratch, output_page);
+	}
+
 	if (! ei_local->txing) 
 	{
 		ei_local->txing = 1;
@@ -373,7 +382,15 @@
 	 * reasonable hardware if you only use one Tx buffer.
 	 */
 
-	ei_block_output(dev, length, skb->data, ei_local->tx_start_page);
+	if(length == send_length)
+	    ei_block_output(dev, length, skb->data, ei_local->tx_start_page);
+	else
+	{
+	    memset(scratch, 0, ETH_ZLEN);
+	    memcpy(scratch, skb->data, skb->len);
+	    ei_block_output(dev, ETH_ZLEN, scratch, ei_local->tx_start_page);
+	}
+
 	ei_local->txing = 1;
 	NS8390_trigger_send(dev, send_length, ei_local->tx_start_page);
 	dev->trans_start = jiffies;