Re: IP4 Space

[Owen DeLong <owen () delong com>]

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