Re: [v6ops] Fwd: New Version Notification for draft-collink-v6ops-ent64pd-01.txt

Jen Linkova <furry13@gmail.com> Fri, 16 December 2022 01:18 UTC

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From: Jen Linkova <furry13@gmail.com>
Date: Fri, 16 Dec 2022 12:18:32 +1100
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To: Gert Doering <gert@space.net>
Cc: V6 Ops List <v6ops@ietf.org>, draft-collink-v6ops-ent64pd@ietf.org, xiaom@google.com
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Subject: Re: [v6ops] Fwd: New Version Notification for draft-collink-v6ops-ent64pd-01.txt
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On Fri, Dec 16, 2022 at 1:44 AM Gert Doering <gert@space.net> wrote:
> I do not think that a /64 per host is reasonable address usage.

Well, when we assign /64 per vlan, most of those addresses are not
used either, right?

> To implement this, network admins need not only to add v6 subnets
> to broadcast segments but also add pools of sizeable size, which does
> create pressure in the /48.../64 range of the addresses they have
> ("one /48 per site").

Even 1 /48 per site gives you 65K /64s.
Also I do not think that "one /48 per site" is set in stone. It's
mostly because you can't assign less if you want local ISP egress -
but nothing would prevent you from assigning more.

> Something like a /96 per host - so "limitless amounts of host would
> fit into a single /64" would avoid that, and still fulfill the
> stated necessity of having many many many addresses per hosts.

Am I right that smth like "the prefix MUST be at least /96 but SHOULD
be /64" would make you less unhappy about the proposal?


-- 
SY, Jen Linkova aka Furry