I attended a very interesting presentation today by Tony Bain, one of the key IETF IPv6 chairs. He says that the rate of /8's being allocated is increasing exponentially at that moment (22 were allocated in 18 months [till July 2005], leaving just 64 available worldwide), and the prior estimate of when IPv4 address was going to be exhausted of 2020 has been revised to 2009 - as in three years away, and that IPv4 address space is likely to take on a much more commercially tradable value as it becomes very rare (like oil). For existing players in the market this doesn't mean much. However for expanding networks this is going to put a serious crimp in their plans. I polled a lot of players in the NZ market about 6 months ago and plans for IPv6 deployment were almost non-existent. There is an older article he wrote here: http://www.cisco.com/web/about/ac123/ac147/archived_issues/ipj_8-3/ipv4. html We really need large commercial transit players like Global Gateway, TelstraClear, AT&T, UUNet, AsiaNetCom, and Sprint to start offering dual stack IPv6 connections to downstream ISPs, and for ISPs to start allowing clients to connection via IPv6, including via DSL. We really need to get critical infrastructure, like DNS, fully IPv6 enabled. The .nz domain isn't even reachable via IPv6 addresses yet. Now I know the shared registry system has IPv6 support now, but it is limiting in that you must still supply IPv4 addresses. You can't supply only IPv6 glue records. What happens when you can't get IPv4 addresses to use for glue? Also the majority of the registries out their offer very poor IPv6 support - as in no IPv6 connected DNS servers, and an inability to easily add IPv6 AAAA records.