To participate in World IPv6 Day, which is being sponsored by the Internet Society, organizations agree to support IPv6 traffic on their public-facing Web sites. -- including Facebook, Google, Yahoo and Bing -- have joined the World IPv6 Day trial.

BACKGROUND:

Verisign on the DNS servers that it operates. Now Verisign will enable global IPv6 connectivity to its corporate Web site -- -- for the June 8 event.

"Verisign is committed to ensuring that the critical Internet infrastructure under our stewardship is fully prepared for rapid, wide-scale IPv6 adoption," said Danny McPherson, Chief Officer of Verisign, in a statement.

The goal of World IPv6 Day is for network operators to gather valuable information about how IPv6 functions in production mode and to quantify how many Internet users suffer from IPv6 brokenness, a term that refers to misconfigured or misbehaving gear that will result in some Internet users being unable to access Web sites that operate IPv6. Industry estimates are that 0.05% of Internet users -- or around 1 million Internet users worldwide -- suffer from IPv6 brokenness and likely don't know it.