Re: [BEHAVE] [Technical Errata Reported] RFC6052 (5547)

Fred Baker <fredbaker.ietf@gmail.com> Tue, 06 November 2018 11:28 UTC

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From: Fred Baker <fredbaker.ietf@gmail.com>
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Date: Tue, 6 Nov 2018 18:28:04 +0700
In-Reply-To: <5a5d6ac6-2d9a-96ee-118d-3601e47804cc@huitema.net>
Cc: RFC Errata System <rfc-editor@rfc-editor.org>, Congxiao Bao <congxiao@cernet.edu.cn>, mohamed.boucadair@orange-ftgroup.com, "Mirja Kuehlewind (IETF)" <ietf@kuehlewind.net>, Dave Thaler <dthaler@microsoft.com>, Xing Li <xing@cernet.edu.cn>, spencerdawkins.ietf@gmail.com, dwing@cisco.com, huitema@microsoft.com, behave@ietf.org
To: Christian Huitema <huitema@huitema.net>
References: <20181106085323.07C1BB80008@rfc-editor.org> <27516408-05B3-4C08-B40E-B01E44525AB5@gmail.com> <5a5d6ac6-2d9a-96ee-118d-3601e47804cc@huitema.net>
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Subject: Re: [BEHAVE] [Technical Errata Reported] RFC6052 (5547)
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> On Nov 6, 2018, at 5:17 PM, Christian Huitema <huitema@huitema.net>; wrote:
> 
> 
> 
> On 11/6/2018 4:23 PM, Fred Baker wrote:
>> On second thought, the exact case is incorrect. I still think it's a silly restriction, but the private address in the case would not be placed into the Well-Known Prefix (and used as a destination address); it would be put into a /64 out of the subscriber's prefix (and used as a source address). So I can live without this change.
> 
> Good.
> 
> I think that the text should not be changed by an errata. The text is a
> fair rendering of our technical assessment at the time. We did not want
> to use the WKP to build ambiguous IPv6 addresses,

If the objective was to not create ambiguous addresses, why did we build a well-known prefix? A well-known prefix is probably the best possible way to create ambiguous addresses.

> and wanted to make
> sure that private IPv4 addresses will be mapped using private prefixes.
> It may or may not have been the right decision, but this is definitely
> what we intended.
> 
> -- Christian Huitema
> 

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