The switch to IPv6 is jumping to light speed. On June 8, 2011 several large organizations, including Google, Yahoo, and Facebook will run a comprehensive test for switching to IPv6. If all goes well most companies will start making the switch. However, the advent of IPV6 is not without problems and the performance monitoring solutions that worked for IPv4, will not work with IPv6.
Using an active external performance monitoring service will be critical with the advent of IPv6. Network and website managers must have a true view into end-user connectivity and the ability to receive instant notification whenever a problem occurs. For instant free test tools for IPv6 performance see ServerView Monitoring™ http://www.dotcom-monitor.com/task_instant_test.aspx and UserView Monitoring™ http://www.dotcom-monitor.com/technical-tools-browser-test.aspx .