World IPv6 Day and World IPv6 Launch Day

[2] World IPv6 Day was announced on January 12, 2011 with five anchoring companies: Facebook, Google, Yahoo, Akamai Technologies, and Limelight Networks.

[4] The main motivation for the event was to evaluate the real world effects of the IPv6 brokenness as seen by various synthetic tests.

To this end, during World IPv6 Day major web companies and other industry players enabled IPv6 on their main websites for 24 hours.

Although Internet service providers (ISP) have been encouraged to participate, they were not expected to deploy anything active on that day, just increase their readiness to handle support issues.

Demonstrating the need for content sites to adopt IPv6 for success, the biggest increase was actually in 6to4 transitional technologies.