On Mar 5, 2010, at 10:36 PM, David Conrad wrote: > 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. >> >> 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. > 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
