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

Tom Herbert <tom@herbertland.com> Mon, 02 August 2021 01:55 UTC

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From: Tom Herbert <tom@herbertland.com>
Date: Sun, 01 Aug 2021 18:55:03 -0700
Message-ID: <CALx6S34uQP2-XQavwwuXsw6F2SNT7utm_4DSLChJ38TSO6U0CA@mail.gmail.com>
To: "C. M. Heard" <heard@pobox.com>
Cc: Joseph Touch <touch@strayalpha.com>, Michael Tuexen <michael.tuexen@lurchi.franken.de>, tsvwg <tsvwg@ietf.org>
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Subject: Re: [tsvwg] UDP options and header-data split (zero copy)
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On Sun, Aug 1, 2021, 6:16 PM C. M. Heard <heard@pobox.com> wrote:

> On Sun, Aug 1, 2021 at 6:13 PM Joseph Touch wrote:
>
>> However, that does not prevent use of UDP fragmentation - which would
>> both be opaque to avoiding IP fragmentation and QUIC, as well as would
>> traverse NATs because of the replicated UDP header in UDP fragments.
>>
>
> True, but QUIC has its own solutions to that problem. From recollection,
> the comments I've seen from QUIC proponents is that there is no interest in
> that quarter in UDP options.
>

They might not have interest, but that is not the same thing as saying UDP
options won't work with QUIC. I don't believe there's anything in the draft
that limits the use cases of UDP options. Besides that, QUIC is just an
anecdote, other protocols will force limits on UDP options (like UDP
tunnels can't user trailers).


> Mike
>

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