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(Almost) All You Need To Know About IPv6
Butterspoon tips us to an article in Ars Technica titled "Everything you need to know about IPv6." Perhaps not quite "everything"; the article doesn't try to explain the reasons behind IPv6's meager adoption since its introduction 12 years ago. But it should be regarded as essential reading for anyone overly comfortable with their IPv4 addresses. Quoting: "As of January 1, 2007, 2.4 billion of those [IPv4 addresses] were in (some kind of) use. 1.3 billion were still available and about 170 million new addresses are given out each year. So at this rate, 7.5 years from now, we'll be clean out of IP addresses; faster if the number of addresses used per year goes up. Are you ready for IPv6?"
'transitional rollout' -> Replace or upgrade every router, replace *all* your ipv4 specific software (good luck finding an ipv6 version of Active Directory, btw.), upgrade all OS software that doesn't have it (might have been working fine for 20 years.. no more.. trash it and get a new one!) Eats up about 5 years of your IT budget in one go.
Alternative: Put the company behind a NAT. Employees don't need a public IP address anyway.. they don't run servers. Costs are an hour of downtime.
Hey, I have relatives who are morons, and they live in Arizona. Not all morons are from Utah.
(And they use the same bit of word play themselves. They even laugh at it, which I consider proof.)
Those who do study history are doomed to stand helplessly by while everyone else repeats it.