Re: [Int-area] New Version Notification for draft-bonica-intarea-lossless-pmtud-00.txt

Joe Touch <touch@strayalpha.com> Sun, 01 December 2019 00:29 UTC

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From: Joe Touch <touch@strayalpha.com>
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To: Derek Fawcus <dfawcus+lists-int-area@employees.org>
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Subject: Re: [Int-area] New Version Notification for draft-bonica-intarea-lossless-pmtud-00.txt
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> On Nov 30, 2019, at 2:00 PM, Derek Fawcus <dfawcus+lists-int-area@employees.org> wrote:
> 
> On Fri, Nov 29, 2019 at 09:01:35AM -0800, Joe Touch wrote:
>> 
>> You’re not using 8 unused bytes. You are following RFC792 for the first three fields (first 4 bytes) and defining a new template for the next 4. 
> 
> I'd suggest they seem to be starting from RFC 4884 (although they do not reference it),
> and then seeing what else they can do.

That may be where they’re getting the “as much of the datagram as possible” part in some cases, but not the 8 unused bytes.

But if so, they need to start with a citation.

Either way, we still end up where we started - we do PLPMTUD because ICMPs are too often blocked. Not just from routers.

Joe