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Re: [v6ops] New features in Legacy IPv4 (was Re: protocols without need for ALG ?)

t.petch <ietfc@btconnect.com> Thu, 13 August 2015 16:47 UTC

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From: "t.petch" <ietfc@btconnect.com>
To: "Howard, Lee" <lee.howard@twcable.com>, Mark Smith <markzzzsmith@gmail.com>, Ca By <cb.list6@gmail.com>
References: <D1EF60F2.643E2%wesley.george@twcable.com> <CAD6AjGSmwogXb+OgGoPqSsvRL==h7YL763+sjWUY8_aqKkmTuw@mail.gmail.com> <CAO42Z2yLVh4AgmKKLK2bRF0x_-+nWAe3f__W9mJCKCRd+-MadA@mail.gmail.com> <D1F0BFBE.BED96%Lee.Howard@twcable.com>
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Cc: v6ops@ietf.org, behave@ietf.org
Subject: Re: [v6ops] New features in Legacy IPv4 (was Re: protocols without need for ALG ?)
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----- Original Message -----
From: "Howard, Lee" <lee.howard@twcable.com>
To: "Mark Smith" <markzzzsmith@gmail.com>; "Ca By" <cb.list6@gmail.com>
Cc: <v6ops@ietf.org>; <behave@ietf.org>
Sent: Wednesday, August 12, 2015 2:25 PM
>>>
>>> Is it time to resurrect this draft and push it forward? It doesn't
>>> explicitly prohibit work of the type proposed in the above drafts,
but
>>>I'd
>>> like to think that  the current language strongly discourages it.
>>> https://tools.ietf.org/html/draft-george-ipv6-support-03
>>>
>>> Wes George
>>
>> Yes.  We clearly see that folks need the message to be unambiguous
>>
>Deprecating IPv4 would do the trick. Doesn't mean you can't use it,
>doesn't mean it can't continue to be fixed, just means that it has
>become the legacy Internet protocol.

I searched in vain for an IETF definition of ³Deprecated,² although I
did
find some examples.

Howard

I saw 'deprecated' used in an IANA registry 29aug2013 and raised the
issue of a lack of definition on the main ietf list.  Since then,
5226bis has been updated to say that the term is in use but should not
be.

The term has long had a well-defined meaning in SMI.

Tom Petch


I found a definition of ³Historic² (sort of) in rfc2026 and an old
clarifying draft draft-yevstifeyev-genarea-historic-03.
All of those words seem to suggest that the deprecated/historic/obsolete
protocol could still be used, but to be careful with it. I¹d call it a
SHOULD NOT, meaning don¹t unless you have a really good reason.
I would be delighted if somebody has pointers to better definitions.

This work would need to happen in 6man or intarea WG, I think. I
therefore
offer no opinion here.

Lee



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