Communications of the ACM
Internet Address Run-Out: Is It Time to Panic?
Most Internet-based estimates show that IPv4 addresses are scheduled to run out by July 22, 2011. However, researcher Stephan Lagerholm has come up with an earlier estimated date of January 10, 2011.
At the zero address date, ICANN has said that the five regional registries will receive the five remaining blocks of available addresses. Originally there were 256 blocks of addresses, but now only 27 remain. The decision to allocate the blocks equally has raised some concerns in the Asia-Pacific region, as it holds 50 percent of the world's population and contains two of the world's fastest-advancing technological countries — China and India.
The outright shortage of domains is not the only concern associated with the transition from IPv4 to IPv6. At a recent series of IPv6 conferences held in New Zealand, many presenters discussed soft issues, such as training, as the real concern with the change. Presenters stressed the same point — that the time needed to address these issues has been underestimated and adoption of solutions for these issues must begin immediately. "It was clear that the time for a leisurely transition had passed, and by necessity the task would be more rushed than was desirable," says IPv6 business manager Kevin Karp.
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