The Hitchhiker’s Guide to Ipv6

The Hitchhiker’s Guide to Ipv6
Prepare, Don’t Panic.
By John Jason Brzozowski
On April 15, 2009, John Curran, then chairman of the board of trustees (and now president and CEO) for the American Registry for Internet Numbers (ARIN), sent a letter to corporate leaders of the Internet community underscoring a key concern. “At the current rate of consumption, IPv4 addresses will be depleted within the next two years,” Curran stated.
Curran strongly recommended that service providers start planning for IPv6 adoption, if they had not done so already.
The adoption of IP version 6 (IPv6), like that of any technology, has its benefits and challenges. But at least one key benefit is well understood. By means of a 128-bit address, IPv6 has a maximum of 2 128 available addresses — that is, roughly 34 followed by 37 zeros. In one popular translation, this is enough to give multiple IP addresses to every grain of sand on the planet.
What requires further attention are the challenges of IPv6 adoption. With the goal of sharing insight into what it takes to deploy IPv6 (and with a nod to Douglas Adams, author of The Hitchhiker’s Guide to the Galaxy, for inspiring the title and corresponding subheads) this article addresses three general topics
* IPv6 gaps, status and trends
* Testing and integration
* IPv4 to IPv6 transition
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