Izumi AIZU wrote: "reserve a pool of IPv4 addresses for future emergency allocation" Emergency to be decided at ICANN level. This one is OK with me, but I heard that similar proposal was not accepted by RIRs and hard to get consensus. But maybe worth a try. Though, "decided at ICANN level" could be mis-leading, as most address policies are decided at RIRs/NRO, not by ICANN (Board or ASO) level or at least that is what the current practive with RIRs. OF course, it could be said at IANA level - but then who decideds IANA policy, etc. Actually, there are two separate things. Allocation from RIRs to ISPs are a matter of regional policy, decided by RIRs individually, while allocation from IANA to RIRs is a matter of general policy, and is the responsibility of the ICANN Board. IANA deals with the practical implementation of the policy, but does not decide the policy. The policy is decided by RIRs/NRO, and has to be approved by the ICANN Board. CHeers, Roberto