Re: [Int-area] Is IPv6 End-to-End? R.I.P. Architecture? (Fwd: Errata #5933 for RFC8200)

Fernando Gont <fgont@si6networks.com> Thu, 27 February 2020 23:07 UTC

To: Joe Touch <touch@strayalpha.com>, Tom Herbert <tom@herbertland.com>
Cc: architecture-discuss@iab.org, Internet Architecture Board <iab@iab.org>, Internet Area <int-area@ietf.org>, ietf@ietf.org
References: <876c9105-3da4-e614-2db0-bea025b54663@si6networks.com> <7749f91f-03f1-cc14-bae8-5fe68c88879f@si6networks.com> <CALx6S36wN7VEi_rxLC1ETcTvkGaPhs20KhQrGWAGGTrCL5OT+g@mail.gmail.com> <d41a94f5ede994b9e14605871f9f7140@strayalpha.com>
From: Fernando Gont <fgont@si6networks.com>
Message-ID: <69bd06b8-7eee-dfbc-5476-bba0f71ae915@si6networks.com>
Date: Thu, 27 Feb 2020 20:06:44 -0300
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Subject: Re: [Int-area] Is IPv6 End-to-End? R.I.P. Architecture? (Fwd: Errata #5933 for RFC8200)
Precedence: list

On 27/2/20 19:52, Joe Touch wrote:
> FWIW - there are separable issues here:
> 
> - whether an IP header (or parts thereof) should be changed in transit
> 
> AFAICT, the answer has always been yes, but limited to the hopcount/ttl 
> in the base header and hop-by-hop options in the options/extension headers.
> 
> - whether an IP header length can change in transit
> 
> I see no reason why it can't become smaller, but if it can become larger 
> then PMTUD and PLPMTUD don't work.

Besides AH (which obviously breaks), hosts typically try to validate 
that the error messages they receive correspond to something they 
actually sent.

EH removal breaks that.

-- 
Fernando Gont
SI6 Networks
e-mail: fgont@si6networks.com
PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492

[Int-area] Is IPv6 End-to-End? R.I.P. Architectur… Fernando Gont
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Tom Herbert
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Fernando Gont
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Phillip Hallam-Baker
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Robert Raszuk
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Bernard Aboba
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Tom Herbert
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Joe Touch
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Fernando Gont
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Joe Touch
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Joe Touch
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Fernando Gont
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Tom Herbert
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Robert Raszuk
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Joe Touch
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Fernando Gont
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Joe Touch
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Robert Raszuk
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Joe Touch
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Robert Raszuk
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Joe Touch
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Fernando Gont
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Mark Andrews
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Robert Raszuk
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Phillip Hallam-Baker
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Phillip Hallam-Baker
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Tom Herbert
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Christian Huitema
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Bernard Aboba
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Fernando Gont
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Fernando Gont
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Fernando Gont
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Phillip Hallam-Baker
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Fernando Gont
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Tom Herbert
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Dino Farinacci
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Tom Herbert
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Bernard Aboba
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Joseph Touch
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Joseph Touch
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Joseph Touch
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Fernando Gont
[Int-area] [arch-d] Is IPv6 End-to-End? R.I.P. Ar… Guntur Wiseno Putra
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Robert Raszuk
[Int-area] [arch-d] Is IPv6 End-to-End? R.I.P. Ar… Guntur Wiseno Putra
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Phillip Hallam-Baker
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Tom Herbert
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Phillip Hallam-Baker
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Tom Herbert
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Joseph Touch
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Joseph Touch
Re: [Int-area] [arch-d] Is IPv6 End-to-End? R.I.P… Andrew Alston
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Fernando Gont
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Joseph Touch
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Andrew Alston
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Fernando Gont
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Fernando Gont
Re: [Int-area] Is IPv6 End-to-End? R.I.P. Archite… Fernando Gont
[Int-area] [arch-d] Is IPv6 End-to-End? R.I.P. Ar… Guntur Wiseno Putra