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Re: [v6ops] draft-ietf-v6ops-ula-usage-recommendations - work or abandon?

"Liubing (Leo)" <leo.liubing@huawei.com> Thu, 05 November 2015 01:05 UTC

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From: "Liubing (Leo)" <leo.liubing@huawei.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Thread-Topic: [v6ops] draft-ietf-v6ops-ula-usage-recommendations - work or abandon?
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Date: Thu, 05 Nov 2015 01:05:01 +0000
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Subject: Re: [v6ops] draft-ietf-v6ops-ula-usage-recommendations - work or abandon?
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Hi Brian,

Thanks for your constructive suggestions. And I expect your detailed review of the future version. Thank you in advance.

B.R.
Bing

> -----Original Message-----
> From: v6ops [mailto:v6ops-bounces@ietf.org] On Behalf Of Brian E Carpenter
> Sent: Thursday, November 05, 2015 7:45 AM
> To: Gert Doering; Howard, Lee
> Cc: v6ops list
> Subject: Re: [v6ops] draft-ietf-v6ops-ula-usage-recommendations - work or
> abandon?
> 
> Going back a bit:
> 
> On 04/11/2015 23:42, Gert Doering wrote:
> > Hi,
> >
> > On Wed, Nov 04, 2015 at 04:36:05AM +0000, Howard, Lee wrote:
> >> 2. There is consensus that NPT66 is bad, for some of the reasons give
> >> in various NAT44/CGN documents. It might be slightly less bad than
> >> NAT66, since it has slightly fewer of the problems given in those documents.
> >
> > I don't think there is consensus on that... otherwise we wouldn't have
> > published NTP66.
> 
> There was rough consensus to publish NPTv6 as experimental. There was
> clearly no consensus to publish it on the standards track.
> 
> But anyway: that is history now. IMHO we need text in the current draft that
> not only states that ULA+NPTv6 has drawbacks, but actually summarises them.
> And states that the IETF has not defined NAT66, and summarises the additional
> drawbacks that ULA+NAT66 would bring. I believe that most of the information
> about the drawbacks is already documented, in RFC 6296 itself, RFC 4864, RFC
> 2993 and maybe elsewehere. There is a good set of references in RFC 6296.
> 
> However, I don't think any of those references discusses the load balancer
> drawback. It is mentioned in a different context at
> http://tools.ietf.org/html/rfc7098#page-10. As it happens, that describes a
> case where NPTv6 is definitely less harmful than NAPT. (When we say NAT66,
> are we referring to NAT66 or NAPT66?)
> 
> Bing already indicated that the authors will add more or less what I suggest.
> That's really the only change needed, IMHO. I'll save a detailed re-review for
> the next draft.
> 
>    Brian
> 
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