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Re: Offset Indicating option

John Leslie <john@jlc.net> Mon, 26 September 2011 14:36 UTC

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Date: Mon, 26 Sep 2011 10:38:49 -0400
From: John Leslie <john@jlc.net>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Subject: Re: Offset Indicating option
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Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
> 
> draft-zhang-6man-offset-option-01 proposes an idea for how to make it
> easier for a node that needs to skip over an IPv6 header chain to do
> so quickly...

   Alas, Brian, this strikes me as a rather bad idea -- introducing
ambiguity and almost inviting gaming the system so that the same packet
looks different to a DPI device and the actual destination.

   IMHO, any node interested in such details of the payload should be
prepared to run at wire speed -- with a dedicated pipeline element if
anyone were so foolish as to perform this in the "backbone".

--
John Leslie <john@jlc.net>

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