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Re: A problem with RFC 6465's Uniform Format for Extension Headers

Brian E Carpenter <brian.e.carpenter@gmail.com> Fri, 07 February 2014 22:53 UTC

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Date: Sat, 08 Feb 2014 11:53:37 +1300
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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To: Karsten Thomann <karsten_thomann@linfre.de>
Subject: Re: A problem with RFC 6465's Uniform Format for Extension Headers
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On 08/02/2014 09:51, Karsten Thomann wrote:
...
> Hi,
> 
> I think the "simple" solution is to provide middle boxes an offset to the upper layer header, if the 
> EH is unknown to the box, it can still identify the upperlayer.

This was suggested a while back but there was no enthusiasm for it.

http://tools.ietf.org/html/draft-zhang-6man-offset-option-01

   Brian

> 
> With that offset every middlebox can identify the used transport protocol without knowledge of 
> any future EH.
> 
> I know that it is not that easy and has it's own pros and cons, but I provide it as an idea to solve 
> the problem.
> 
> Regards
> Karsten
> 
> 
> 
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