From mboxrd@z Thu Jan  1 00:00:00 1970
From: "David S. Miller" <davem@redhat.com>
Subject: Re: tun device - bug or feature? WAS(Re: IMQ / new Dummy device
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Date: Sun, 25 Apr 2004 21:38:06 -0700
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On 24 Apr 2004 10:14:43 -0400
jamal <hadi@cyberus.ca> wrote:

> Jeff, Dave: Would it be fair to say when packets get injected into the
> stack by a netdev via netif_rx(), the skb headers are expected to be
> ponting into some specific places? I am not sure if theres a hard
> fastened rule defined anywhere.

What do ipv4 tunnels do?  They merely modify 'nh' and 'mac' ".raw" and
pass the packet in.