[123357] in North American Network Operators' Group
Re: IP4 Space
daemon@ATHENA.MIT.EDU (Owen DeLong)
Fri Mar 5 13:24:11 2010
From: Owen DeLong <owen@delong.com>
In-Reply-To: <B6A51F83-9E7E-4FBB-9E32-11AF4166B0BB@virtualized.org>
Date: Sat, 6 Mar 2010 02:21:05 +0800
To: David Conrad <drc@virtualized.org>
Cc: "nanog@nanog.org list" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Mar 5, 2010, at 10:36 PM, David Conrad wrote:
> Mark,
>=20
> 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.
>=20
> 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.
>=20
>> 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.
>=20
> 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.
>=20
Ah, but, that assumes that the need is located in a similar part of the =
network
to the reclamation, or, that the point of reclamation can be =
sufficiently motivated
to do so by the money offered by the point of need.
I suspect the organizations that have excess space and know where it is =
are
likely to hold onto it as a hedge against their future needs, or, try to =
extract
a very high market premium for it.
Owen
