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Re: [tsvwg] UDP options and header-data split (zero copy)

Joe Touch <touch@strayalpha.com> Sat, 17 July 2021 23:06 UTC

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From: Joe Touch <touch@strayalpha.com>
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Date: Sat, 17 Jul 2021 16:06:05 -0700
Cc: tsvwg <tsvwg@ietf.org>
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To: Tom Herbert <tom@herbertland.com>
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Subject: Re: [tsvwg] UDP options and header-data split (zero copy)
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> On Jul 17, 2021, at 2:58 PM, Tom Herbert <tom@herbertland.com> wrote:
> 
> If I'm reading the draft correctly, it is possible that UDP options
> could appear both in the headers and trailers of a packet. If that is
> correct, then that means an implementation needs to be able to handle
> both headers and trailers within the *same* packet.

That is always the case for non-fragmented packets - the only mode that supports transparent use of options that don’t change the payload data with legacy receivers. 

Joe

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