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Re: Deprecating IPv6 (Re: draft-bourbaki-6man-classless-ipv6-00)

Brian E Carpenter <brian.e.carpenter@gmail.com> Sat, 03 June 2017 20:56 UTC

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Subject: Re: Deprecating IPv6 (Re: draft-bourbaki-6man-classless-ipv6-00)
To: ipv6@ietf.org
References: <CAO42Z2wp72j-yOsR8C=iqS+dX14wLwthAtOTvD5ugj_NQ=NQag@mail.gmail.com> <74616764-EF03-4AD3-BC59-B579B9FD2001@thehobsons.co.uk> <E6E71444-F344-448C-AE9F-2F506A1F8832@tzi.org>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Sun, 04 Jun 2017 08:56:02 +1200
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On 04/06/2017 01:15, Carsten Bormann wrote:
> On Jun 3, 2017, at 12:45, Simon Hobson <linux@thehobsons.co.uk> wrote:
>>
>> unlearning and relearning
> 
> Reminds me of the story where a kid learns how to roast a duck and the mother explains that to roast a duck, you have to cut off a bit at the ends before roasting.  Kid asked ma why, and she didn’t know; her grandma had always told her so.  Long story compressed, it turned out grand-grandma had an oven that was too short for a whole duck, and the cutting routine survived through the family even though today’s ovens are larger.
> 
> But the whole discussion here is backwards, because we stopped cutting our ducks a long time ago.
> Changing the established IPv6 operational practices so they look more like duck-cutting for IPv4 doesn’t make sense.

Indeed not. But we might well want to change IPv6 operational practices to meet future requirements, and having a magic boundary prevents that. Having a parameter n that can be modified at some point in the future gives us a more flexible duck.

BTW exactly the same story was in the NZ Herald newspaper a few days ago, but the victim was a leg of lamb.

    Brian

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