On June 8, 2011, Bing.com, along with Internet properties from a host of technology companies, will be participating in World IPv6 Day. Most websites today only support IPv4, but on World IPv6 Day participating Internet properties will additionally enable connectivity via IPv6, going "dual-stack.” This one-day test will enable the Internet community to evaluate the general state of IPv6 preparedness. Several websites will have IPv6 connectivity test UI (we will). Many of the technology companies have requested that Microsoft have a KB to modify TCPIP from preferring IPv6 (default) to instead preferring IPv4, for customers that have problems connecting to websites on World IPv6 Day. The current KB 929852 is too detailed for Consumers, so we want to create a new KB for this specific purpose. We need a basic KB that can be linked for from blogs, other company websites, etc, in content that is specific to World IPv6 day. The KB needs to include a Fix-it that makes the same change as Fix-it 50441, but also remove..

A series of changes to Facebook's load balancers allows IPv4 traffic to be served on its IPv6 data center infrastructure.