IPv6 traffic came into ISPs from all over the world when Google turned up its IPv6 traffic on YouTube," Levy says. "IPv6 is being supported at many different Google data centers. We're talking about a traffic spike that is 30-to-1 type ratios. In other words, 30 times more IPv6 traffic is coming out of Google's data centers than before.
That is some spike! It will be interesting to see if this applications (along with the other IPv6-enabled Google services) will be enough to build momentum for a large scale conversion to IPv6. This is a classic case of standards transition; it will be interesting to observe the dynamics.