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

Brian E Carpenter <brian.e.carpenter@gmail.com> Thu, 05 November 2015 19:44 UTC

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To: David Farmer <farmer@umn.edu>, "Howard, Lee" <lee.howard@twcable.com>, Lorenzo Colitti <lorenzo@google.com>
References: <D25D5920.C914E%Lee.Howard@twcable.com> <5637FDD0.70300@jvknet.com> <D25E32F1.C9507%Lee.Howard@twcable.com> <CAKD1Yr1VvzkSmJo3hu6t_3CUguLN_UkNZjRUqvU_ygPBTyb+8g@mail.gmail.com> <8AE0F17B87264D4CAC7DE0AA6C406F45C2319739@nkgeml506-mbx.china.huawei.com> <CAKD1Yr3g-ZV+MkbtDrusbtYaZ_wmCxDG9XbT25Ldma4koGpV6A@mail.gmail.com> <D25E7DDF.C9709%Lee.Howard@twcable.com> <CAKD1Yr3Vsn7Ny_xSCr_=sVCHyU+=ZrRh2iQDUPx-5FWdHajv2w@mail.gmail.com> <D2614A6A.CA099%Lee.Howard@twcable.com> <563B9D1E.4030606@umn.edu>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
Message-ID: <563BB197.8040100@gmail.com>
Date: Fri, 06 Nov 2015 08:44:23 +1300
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Cc: IPv6 Operations <v6ops@ietf.org>
Subject: Re: [v6ops] draft-ietf-v6ops-ula-usage-recommendations - work or abandon?
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On 06/11/2015 07:17, David Farmer wrote:
> On 11/5/15 03:05 , Howard, Lee wrote:
>>
>> From: Lorenzo Colitti <lorenzo@google.com <mailto:lorenzo@google.com>>
>>
>>     On Tue, Nov 3, 2015 at 3:18 PM, Howard, Lee <lee.howard@twcable.com
>>     <mailto:lee.howard@twcable.com>> wrote:
>>
>>         And so on. It seems pretty clear. Is this language
>>         insufficiently strong for you? What words would you use instead?
>>
>>
>>     I would prefer if we used phrasing of the form "<xxx> is considered
>>     harmful" or "<xxx> is not recommended".
>>
>>
>> You deleted a lot of context, including the text:
>>
>> “(NPT66) is not recommended by the IETF.”
> 
> For the most part I like this.  It takes emotional trigger words out of it.  However, I would suggest focusing on Internet
> connectivity and away from all potential uses of NAT.  I believe the primary objection to NAT is in a general-purpose Internet
> context, and other more specialized uses might be less objectionable to some.  So something like;
> 
>    Use of NPT66, and NAT66 as a general concept, are NOT RECOMMENDED in
>    the context of general-purpose Internet connectivity.

If we're not writing a BCP, we don't need to do it that way, even though it's
factually true. We can simply say things like

NPTv6 is an experimental technology and network address translation for
IPv6 has not been defined by the IETF. Therefore, they do not have a role
to play in general-purpose Internet connectivity.

Outside our little world, the effect is much the same.

    Brian

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