According to Wikipedia (quoted in red):
Internet Protocol version 6 (IPv6) is the latest revision of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet. IPv6 was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion.
IPv6 is intended to replace IPv4, which still carries the vast majority of Internet traffic as of 2013. As of September 2013, the percentage of users reaching Google services over IPv6 surpassed 2% for the first time.
Every device on the Internet must be assigned an IP address in order to communicate with other devices. With the ever-increasing number of new devices being connected to the Internet, the need arose for more addresses than IPv4 is able to accommodate. IPv6 uses a 128-bit address, allowing 2128, or approximately 3.4×1038 addresses, or more than 7.9×1028 times as many as IPv4, which uses 32-bit addresses. IPv4 allows only approximately 4.3 billion addresses. The two protocols are not designed to be interoperable, complicating the transition to IPv6.
Source (as of 12-22-2013): https://en.wikipedia.org/wiki/IPv6
I don’t think IPv6 will be used exclusively for several years. However it is wise to plan ahead and get some sort-of IPv6 setup on your home/office network.
You can check to see if you have IPv6 setup by going here: https://checkyoursix.computerlagoon.com
Posted in Computers, Internet and Servers, Operating Systems