IPV6Day LogoWorld IPv6 day, scheduled for June 8, 2011, is a global-scale test flight of IPv6 sponsored by the Internet Society. On World IPv6 Day, major web companies and other industry players will come together to enable IPv6 on their main websites for 24 hours. Yahoo! will participate in World IPv6 Day with www.yahoo.com dual-stacked for 24hrs on June 8th globally. Some smartphones may have trouble reaching us that day. Read more about IPV6 on Yodel Anecdotal.