In February, the news broke that the Internet Assigned Numbers Authority had allocated the final blocks of IPv4 addresses to the five Regional Internet Registries to be distributed to parties within their respective geographic zones. Since then, some of those registries have depleted their pools of allocated addresses; the rest will likely run out soon. Simply put, the demand for IPv4 addresses from businesses, organizations, Internet users and others has exceeded the available supply. This is, of course, a problem. But what does it mean at a practical level?

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