[HIB]Five Things You Need To Know About IPv6

We need it soon. The supply of Internet Protocol version 4 (IPv4) addresses is dwindling, spurring interest in the transition to IPv6, with its exponentially larger address space. Since the IPv6 standard was established in 1999, operating systems and network equipment have steadily added support, says John Curran, president and CEO of the American Registry for Internet Numbers. But the transition got started so early that it has since faded into the background.It's no cause for panic. "As we got into the mid-2000s, people started thinking, 'Maybe we don't need it, maybe this is a false alarm,'" says Curran. But addresses are running out faster than ever, consumed by things like smartphones. Even if your organization has all the IPv4 addresses it needs, it will soon have to coexist with a many more IPv6 users elsewhere.It's not sexy. The main virtue of IPv6 is its 128-bit address space, compared with 32 bits for IPv4. Unfortunately, those aren't the kind of numbers that get CEOs and CFOs excited. Outside of the U.S. Department of Defense, which is attracted to the encryption in IPv6, most CIOs will have a hard time making a business case for the switch. "When everybody's forced to do it, that's when the rubber is going to hit the road," says Frank Troy, an IPv6 consultant.

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