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

Robert Raszuk <robert@raszuk.net> Thu, 27 February 2020 23:14 UTC

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In-Reply-To: <d41a94f5ede994b9e14605871f9f7140@strayalpha.com>
From: Robert Raszuk <robert@raszuk.net>
Date: Fri, 28 Feb 2020 00:04:43 +0100
Message-ID: <CAOj+MMFo=7G6ygCNEkwNXzzzdbYh7Aw6SzcjL_Atg6RGyDJdjA@mail.gmail.com>
To: Joe Touch <touch@strayalpha.com>
Cc: Tom Herbert <tom@herbertland.com>, Internet Architecture Board <iab@iab.org>, architecture-discuss@iab.org, Internet Area <int-area@ietf.org>, IETF <ietf@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/architecture-discuss/ZuN5hhyqqrzdvEy0MJg1EXBYh9c>
Subject: Re: [arch-d] [Int-area] Is IPv6 End-to-End? R.I.P. Architecture? (Fwd: Errata #5933 for RFC8200)
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Joe, all,

Just to clarify something Fernando purposely missed in his call for action:

All operations on the packets discussed in SPRING WG are happening NOT on
the original (end to end) packet header. They are all defined to happen
within new imposed outer encapsulated header (IPv6 in IPv6 to be precise).

So original packet just get's tunneled between various points of the
network. Last time I checked that operation is allowed by RFC2473.

Its subtle detail, but fundamental one to this entire context/discussion.

Kind regards,
R.

On Thu, Feb 27, 2020 at 11:54 PM Joe Touch <touch@strayalpha.com> 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.
>
> So the question isn't just what is wanted, it's what is feasible.
>
> Joe
>
>

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