But seriously, what is Amazon's big holdup here? Is it really that hard to turn on IPv6 support on their hardware? I can kind of see end user ISPs dragging their heels on IPv6 because they don't want to deal with grandmas wondering why they can't access their quilting forums (which have a busted IPv6 configuration) suddenly, but for something like EC2 you have to assume that the people using it have at least a little technical proficiency.