This represents a milestone for the beginning of the end of IPv4,
IPv4 networks will continue to run as they have before. In fact, according to Google, a mere 0.2 percent of all Internet users worldwide rely on IPv6 connections as IPv4 addresses are used up this year.
I you are using windows 7 or vista then dont worry but If you run Windows XP, though, it is necessary to make a minor configuration to the operating system by typing "netsh int ipv6 install" in the Windows command prompt to access IPv6 sites.
Ubuntu users may have some troubles but the will get through anyway.
A major test of how well the world's Internet users are ready for IPv6 will take place on June 8. That's when Akamai, Facebook, Google, Limelight Networks, and Yahoo will run on IPv6 connections for 24 hours. But despite the millions of users of Windows XP as well as Linux around the world likely won't configure their operating system for the June 8 test day, Google says they needn't worry, and it maintains that 99.95 percent of its users will not even notice the switch that day.
