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Re: [v6ops] Implementation Status of PREF64

Owen DeLong <owen@delong.com> Wed, 13 October 2021 17:26 UTC

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From: Owen DeLong <owen@delong.com>
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Date: Wed, 13 Oct 2021 10:25:36 -0700
Cc: Philip Homburg <pch-v6ops-10@u-1.phicoh.com>, v6ops@ietf.org
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To: Gert Doering <gert@space.net>
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Subject: Re: [v6ops] Implementation Status of PREF64
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> On Oct 13, 2021, at 09:58 , Gert Doering <gert@space.net> wrote:
> 
> Hi,
> 
> On Tue, Oct 12, 2021 at 12:39:43PM -0700, Owen DeLong wrote:
>>> (ceterum censeo, /64 was not a very smart decision)
>> We can agree to disagree. So far, I???ve seen no data to support that.
> 
> Indeed.
> 
> So far I have not seen any data that supports "/64 was a good idea" :-)

It’s working quite well in a number of networks I’ve deployed.

It’s convenient for EUI-64 addressing.

Reviewing the record, it seems we were destined for something like 64-bit
addressing overall before IETF decided to consider EUI-64 addressing and
added 64-bits to the plan, so one can argue that without the idea of
universal /64 addressing we’d have a whole lot fewer network numbers
available.

So now you have seen data to suggest that /64 was a good idea.

Do you have any data support your claim that /64 was not?

Owen

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