World IPv6 Day is scheduled for June 6.

On June 6, 2012, the world's largest Internet companies—Facebook, Google, Microsoft, and Yahoo!—will begin supporting the new version of the Internet protocol, IPv6.

This will happen one year after the World IPv6 Testing Day.

Last year, major Internet companies conducted a test implementation of IPv6, and in 2012 they plan to provide permanent, full-fledged support for IPv6.

IPv6 Implementation Day will be held under the supervision of the Internet Society, an organization dedicated to the development and maintenance of the Internet.

One of the goals of IPv6 Implementation Day is to encourage businesses to migrate to IPv6, given the scarcity of available IPv4 addresses. The event's organizers want to demonstrate that IPv6 is no longer an experiment, but a necessity, the next stage in the development of the internet.

According to the organizers' estimates, after IPv6 Implementation Day, approximately 1% of internet users will access websites using IPv6. Currently, this figure is approximately 0.4%.

Transitioning to IPv6 requires upgrading equipment on the side of Internet providers and websites, ensuring IPv6 support on clients' home routers, as well as in users' operating systems.

IPv6 Implementation Day participants commit to preparing all necessary infrastructure to provide user access via IPv6. Specifically, equipment manufacturers are committed to enabling IPv6 by default in their products.

Many IT companies will participate in IPv6 Implementation Day, including providers AT&T, Comcast, Free Telecom, Internode, KDDI, Time Warner Cable, and XS4ALL; equipment manufacturers Cisco and D-Link; internet services Facebook, Google, Bing, and Yahoo!; and content delivery networks Akamai and Limelight.