[182335] in North American Network Operators' Group
Re: Dual stack IPv6 for IPv4 depletion
daemon@ATHENA.MIT.EDU (Baldur Norddahl)
Wed Jul 15 06:43:53 2015
X-Original-To: nanog@nanog.org
In-Reply-To: <2C50C88F-D328-40B4-A785-5115965F6128@delong.com>
Date: Wed, 15 Jul 2015 12:43:49 +0200
From: Baldur Norddahl <baldur.norddahl@gmail.com>
To: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On 15 July 2015 at 01:34, Owen DeLong <owen@delong.com> wrote:
> For one thing a /32 is nowhere near enough for anything bigger than a
> modest ISP today. Many will need /28, /24, or even larger. The biggest ones
> probably need /16 or even /12 in some cases.
>
What is the definition of a modest and a large ISP?
In the RIPE region even the smallest ISP can get a /29 with no
documentation necessary. But likely that is all they will ever get because
policy requires that you use that /29 at about 30% efficiency if you do /48
allocations to end users.
You would need more than a million users to get a /24.
I do not think the RIPE region has an ISP large enough to apply for a /16
or anything near it.
Therefore we can conclude that if ARIN manages to use up all the /3 address
space currently reserved for allocation, we will still be able to get
address space in Europe for the next thousands years :-). It is thought
that RIPE will not use up the /12 that IANA allocated to RIPE - ever.
Personally I believe the ARIN policy is the sane one. But we need to abide
by the rules in the region we live in.
Regards,
Baldur
