[123325] in North American Network Operators' Group
Re: IP4 Space
daemon@ATHENA.MIT.EDU (David Conrad)
Fri Mar 5 09:36:52 2010
From: David Conrad <drc@virtualized.org>
In-Reply-To: <DEC5FCD2-1FB3-47EA-B086-207646D20E61@internode.com.au>
Date: Fri, 5 Mar 2010 09:36:12 -0500
To: Mark Newton <newton@internode.com.au>
Cc: "nanog@nanog.org list" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Mark,
On Mar 4, 2010, at 11:46 PM, Mark Newton wrote:
> On 05/03/2010, at 2:50 PM, David Conrad wrote:
>> When the IPv4 free pool is exhausted, I have a sneaking suspicion =
you'll quickly find that reclaiming pretty much any IPv4 space will =
quickly become worth the effort.
>=20
> Only to the extent that the cost of IPv6 migration exceeds the cost
> of recovering space.
You're remembering to include the cost of migrating both sides, for all =
combinations of sides interested in communicating, right? In some =
cases, that cost for one of those sides will be quite high.
> There's sure to be an upper-bound on the cost of v4 space, limited by =
the
> magnitude of effort required to do whatever you want to do without v4.
The interesting question is at what point _can_ you do what you want =
without IPv4. It seems obvious that that point will be after the IPv4 =
free pool is exhausted, and as such, allocated-but-not-efficiently-used =
addresses will likely become worth the effort to reclaim.
Regards,
-drc
