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Re: Updating to RFC6434 to deal with 8200-style header insertion by IPIP

Tim Chown <Tim.Chown@jisc.ac.uk> Mon, 06 November 2017 10:30 UTC

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From: Tim Chown <Tim.Chown@jisc.ac.uk>
To: Michael Richardson <mcr+ietf@sandelman.ca>
CC: Brian E Carpenter <brian.e.carpenter@gmail.com>, "C. M. Heard" <heard@pobox.com>, 6man WG <ipv6@ietf.org>
Subject: Re: Updating to RFC6434 to deal with 8200-style header insertion by IPIP
Thread-Topic: Updating to RFC6434 to deal with 8200-style header insertion by IPIP
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Date: Mon, 06 Nov 2017 10:30:14 +0000
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Hi Michael,

> On 5 Nov 2017, at 01:37, Michael Richardson <mcr+ietf@sandelman.ca> wrote:
> 
> 
> Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
>> Yes, that particular elephant stands politely and quietly in the corner
>> of the room. However, I'd just read the text you cite when I wrote my
>> message and I'll stick to what I said: we *specify* action for an
>> unrecognized extension header, but we ignore the elephant and *don't*
>> specify action for an unrecognized ULP. Consider it a drafting error,
>> or a design error. I agree with you about the practical effect: an
>> unexpected IPIP packet is likely to generate ICMP 1 today.
> 
> okay, so shouldn't 6463 fix this part at least?

The question is whether we add such “gaps” to 6434-bis, or spin up a new draft to update 8200, which might then be reflected in a future Node Reqs update.

I’m easy either way as an author of the doc, but would err towards minimising adding new material to 6434-bis, and trying where possible to just point to existing documents. 

Some input from the chairs would be welcome.

Tim

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