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Re: [NAT-T] NON-IKE encapsulation

To: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [NAT-T] NON-IKE encapsulation
From: "David S. Miller" <davem@xxxxxxxxxx>
Date: Thu, 24 Jun 2004 12:46:54 -0700
Cc: agruen@xxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <20040624123603.GA1241@xxxxxxxxxxxxxxxxxxx>
References: <20040624123603.GA1241@xxxxxxxxxxxxxxxxxxx>
Sender: netdev-bounce@xxxxxxxxxxx
On Thu, 24 Jun 2004 22:36:03 +1000
Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> wrote:

> I'm having trouble understanding why we need to increase alen by
> two bytes for NON-IKE.  As far as I can see it's adding two bytes
> of random data to the end of the packet.  Is there something
> obvious that I'm missing?

It is intentional as far as I remember.  If it's any other length,
then the other side implementing this non-IKE encap stuff won't
accept the packet, it must be that length.

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