IPv6: when 4,294,967,296 is not enough

At a time when some people in the world are preparing for the end of days in the Mayan calendar, others like Go Daddy are preparing for the end of Internet addresses in IPv4. While many doubt the importance of the Mayan date, the free pool of available address space in IPv4 has already run dry. There is hope, however — IPv6.
The problem is that the worldwide explosion of websites, routers, cloud servers, smartphones, tablets and Internet-connected car starters have burned up most of the 4 billion IP addresses. In fact, APNIC ran out in 2011 with the rest of the RIRs to follow in the coming two years.
While IPv4 is based on 32-bit addresses, which enable 4 billion (4,294,967,296) addresses, IPv6 uses 128-bit addresses, which enable 340 undecillion (yes . . . that is a number). That translates to 340,282,366,920,938,463,463,374,607,431,768,211,456 addresses, enough to last quite a while.
Today many ISPs are permanently enabling IPv6 on select services, Go Daddy included. Since 2007, Go Daddy has completed a number of IPv6 projects, including dual stack (concurrent IPv4 and IPv6) support for DNS, AAAA record support, IPv6 glue records, and now Go Daddy offers IPv6 on its Linux VPS Hosting solution. For many users the transition will be transparent, but to see what goes into making a network IPv6 capable, read an explanation from Go Daddy CTO Wayne Thayer.