IPv4 countdown policy proposal
http://www.apnic.net/docs/policy/proposals/prop-046-v001.html
5,6年後にやってくるだろう IPv4 アドレスの枯渇に向けた IPv4 アドレス割り振りポリシーの提案。
Geoff Huston's latest projection at Potaroo (as of January 6, 2007)(http://www.potaroo.net/tools/ipv4/) draws the date of IANA pool exhaustion as 31st May 2011, and that of RIR pool as 14th July 2012.