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

The advantage I see with a WKP is that you can roam to another NAT64 (and/or DNS64) without changing configs, and also, that you may ignore the prefix discovery mechanism (I've seen this coded in some places), if you presume that the WKP is the "default" one ...

Regards,
Jordi

-----Mensaje original-----
De: Behave <behave-bounces@ietf.org> en nombre de Fred Baker <fredbaker.ietf@gmail.com>
Fecha: martes, 6 de noviembre de 2018, 18:28
Para: Christian Huitema <huitema@huitema.net>
CC: Congxiao Bao <congxiao@cernet.edu.cn>, <mohamed.boucadair@orange-ftgroup.com>, Dave Thaler <dthaler@microsoft.com>, Xing Li <xing@cernet.edu.cn>, <spencerdawkins.ietf@gmail.com>, <dwing@cisco.com>, <huitema@microsoft.com>, "Mirja Kuehlewind (IETF)" <ietf@kuehlewind.net>, <behave@ietf.org>, RFC Errata System <rfc-editor@rfc-editor.org>
Asunto: Re: [BEHAVE] [Technical Errata Reported] RFC6052 (5547)

    > 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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