Re: Moving forward draft-ietf-6man-oversized-header chain?

Fernando Gont <fgont@si6networks.com> Thu, 07 February 2013 17:36 UTC

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Date: Thu, 07 Feb 2013 14:35:43 -0300
From: Fernando Gont <fgont@si6networks.com>
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To: Karl Auer <kauer@biplane.com.au>
Subject: Re: Moving forward draft-ietf-6man-oversized-header chain?
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On 02/07/2013 07:34 AM, Karl Auer wrote:
>>> Coming in very late and this has probably already been thought of, but
>>> the ESP header *is* effectively a payload, and may need to be
>>> fragmented.
>> everything after the esp header is payload for everyone other than the 
>> intended recipient, who has more headers to unwrap once the payload has 
>> been decrypted.
> 
> Er - yes. I just meant that you can't take the hard line that "headers
> shall not be fragmented" (not that Brian was saying that) when at least
> one header may have to be. There will only be more headers to unwrap in
> tunnel mode.

>From the pov of this I-D, ESP is the "upper layer protocol". So as long
as you have everythin till the ESP header in the first fragment, you're
fine.

I could add a clarification, if you want (for instance, I added
something along those lines in draft-ietf-v6ops-ra-guard-implementation)

Thanks!
-- 
Fernando Gont
SI6 Networks
e-mail: fgont@si6networks.com
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