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Re: [tsvwg] Alternative version of the UDP FRAG option

Joe Touch <touch@strayalpha.com> Wed, 13 March 2019 04:48 UTC

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From: Joe Touch <touch@strayalpha.com>
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Date: Tue, 12 Mar 2019 21:47:53 -0700
Cc: Gorry Fairhurst <gorry@erg.abdn.ac.uk>, tsvwg <tsvwg@ietf.org>
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To: "C. M. Heard" <heard@pobox.com>
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Subject: Re: [tsvwg] Alternative version of the UDP FRAG option
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> On Mar 12, 2019, at 9:36 PM, C. M. Heard <heard@pobox.com> wrote:
> 
> Having the revised OCS cover the data in each fragment provides protection that is essentially equivalent to that provided by the post-reassembly checksum proposed in the current draft.

The composition of checksums is not equivalent to a checksum. It does not offer equivalent protection, esp. in errors within the reassembly process itself.

This remains a non starter.

Joe

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