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Re: Subject: Confirming consensus on adopting draft-carpenter-6man-why64

Brian E Carpenter <brian.e.carpenter@gmail.com> Sun, 16 March 2014 08:04 UTC

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Date: Sun, 16 Mar 2014 21:04:28 +1300
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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To: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
Subject: Re: Subject: Confirming consensus on adopting draft-carpenter-6man-why64
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On 16/03/2014 07:31, Bjoern A. Zeeb wrote:
> On 15 Mar 2014, at 07:38 , Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
> 
>>> So what about ::1/128? What is the history of loopback being /128 rather than /64?
>> I suspect that it was given a /128 without much thought, since the loopback
>> address for IPv4 was a /32. I can't be bothered to search the old
>> documents before breakfast, but I expect this was done before the IID
>> length changed from 48 to 64.
> 
> Huh?
> 
> I thought loopback was 127.1/8 and a quick check on a few different OSes shows that this is the way they implement (configure) it by default.

My oops. However, IANA shows 127.0.0.0/8 as loopback.

The /128 choice for IPv6 goes right back to RFC 1884 (July 1998).

    Brian

> — 
> Bjoern A. Zeeb                             ????????? ??? ??????? ??????:
> '??? ??? ???? ??????  ??????? ?? ?? ??????? ??????? ??? ????? ????? ????
> ?????? ?? ????? ????',  ????????? ?????????, "??? ????? ?? ?????", ?.???
> 
>

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