World IPv6 Launch Day participants reported no major technical glitches or as they deployed IPv6 across their products, services and content.

what it called "minor issues" with its advertising partners as it launched AdSense and content ads with IPv6. Google also said it ran into problems with IPv6 support in its Street View service, and it reported that it was not serving up what are called Quad-A records for IPv6 to a few networks -- primarily in Japan -- that were having problems with IPv6 service.

"Overall, it's been a tremendous success," said Erik Kline, IPv6 software engineer at Google.

Kline noted that Google saw IPv6 adoption increase 150% in the last year, in addition to continued growth with IPv4. "At this rate, 50% of users will have IPv6 in about six years, hopefully sooner as deployment accelerates," he added.

John Brzozowski, distinguished engineer and chief IPv6 architect for Comcast, echoed the view that Comcast saw no major issues with IPv6 on Wednesday. "Call center volumes were at par for this time of the year or below," he said. "It was a seamless event."