Re: Last Call: <draft-ietf-6man-rfc1981bis-04.txt> (Path MTU Discovery for IP version 6) to Internet Standard

Brian E Carpenter <brian.e.carpenter@gmail.com> Fri, 03 February 2017 19:33 UTC

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Subject: Re: Last Call: <draft-ietf-6man-rfc1981bis-04.txt> (Path MTU Discovery for IP version 6) to Internet Standard
To: ipv6@ietf.org
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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Sat, 4 Feb 2017 08:33:16 +1300
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On 03/02/2017 23:52, otroan@employees.org wrote:
...
> PLMTUD is better, and it is even better combined with PMTUD. But PLMTUD isn't deployed everywhere, nor used for UDP etc..
> I don't see how that has any bearing on making 1981 an Internet standard.
> 
> I would really encourage more work on the Path MTU discovery problem though. Possibly combined with removing fragmentation from the IP layer. But that's far outside of the context of taking 1981 to Internet standard.

Exactly. We aren't required to show that RFC1981 works in all circumstances. We're
required to show that it works interoperably and is widely implemented.

Lars - nobody disagrees, I think, that we need to get RFC4821 widely implemented,
but that is a separate thing entirely.

    Brian