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U.S. Government to Adopt IPv6 in 2008
IO ERROR writes "The U.S. Government is set to transition to IPv6 in June 2008, according to Government Computer News: 'In the newest additions to the IPv6 Transition Guidance, the CIO Council's Architecture and Infrastructure Committee has provided a list of best practices and transition elements that agencies should use as they work to meet the deadline. The latest additions, (MS Word) released in May, are a compilation of existing recommendations and best practices gathered from the Defense Department, which has been testing and preparing for the transition for years, the private sector, and the Internet research and development community.'"
There is also right now a huge disagreement going on in the background about how to multi-home in IPv6.
The presently-proposed model implies that only big ISPs (plans for at least 200 customers that you'll be allocating space to) can get their own IP space...everyone else has to get space allocated to them from bigger groups. This, predictably, is making the content providers and big enterprises very unhappy, because they're used to (and now require) multiple uplinks to differing ISPs.
The proposed fix for this problem, shim6, has been routinely savaged as a complete non-starter. That's mostly because it's proposing allowing each and every end host to make it's own decisions about what path to take, causing all sorts of uglyness for security devices and traffic engineering.
There presently is no good answer to this, which is why a lot of orgs are holding off on IPv6.