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Re: [Spud] [tsvwg] New Version Notification for draft-touch-tsvwg-udp-options-01.txt

Tom Herbert <tom@herbertland.com> Mon, 02 November 2015 06:43 UTC

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Date: Mon, 2 Nov 2015 15:43:40 +0900
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From: Tom Herbert <tom@herbertland.com>
To: Bob Briscoe <ietf@bobbriscoe.net>
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Cc: spud <spud@ietf.org>, tsvwg <tsvwg@ietf.org>, Joe Touch <touch@isi.edu>
Subject: Re: [Spud] [tsvwg] New Version Notification for draft-touch-tsvwg-udp-options-01.txt
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On Mon, Nov 2, 2015 at 3:05 PM, Bob Briscoe <ietf@bobbriscoe.net> wrote:
> Joe,
>
> Before starting measurements, I would recommend searching the Web for the
> manuals of middleboxes that might block such packets.
>
Please look at NIC offloads also. I am pretty certain that the most
common flavor of checksum offload will break in this proposal since
devices use the value in the UDP length field as the length of the
payload to compute the checksum over. UDP Fragmentation Offload would
similarly be broken, although we can probably live without that (but
we can't live without checksum offload!).

Tom

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