Let me just comment on one thing here... Iljitsch van Beijnum wrote:
Saying there will be a market is harmful regardless of whether it's true, because that way, people will be disinclined to give back the address space they currently hold but don't use. So if there's going to be one, let it be a surprise.
You are talking about giving an industry that is valued in the trillions of dollars a "surprise"? I'm sorry but thats just not an option here - we simply need to make this process of extending the useable life of IPv4 work as best we can beyond the exhaustion point of the unallocated address pool. We need to do it in the open, we need to do it with the assistance and cooperation of many others, we need to do it so that the network can continue to operate as best as it can, and we need to do our bit to get the industry get itself out of this rather professionally constructed hole! Geoff