Tech giants to enable IPv6 on "World IPv6 Day" in June..!!

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The Internet Society, an organization dedicated to the good of the Internet, is organizing "World IPv6 Day" on June 8 of this year. Web giants Facebook, Yahoo, and Google, with a combined one billion visitors per day, are participating by enabling IPv6 for their main services that day. Content distributors Limelight and Akamai are also joining the party by enabling their customers to participate. But unlike during the IETF IPv6 experiment, IPv4 won't be turned off.

Yahoo, Google, and Facebook have each been working on IPv6 for some time, but have been hesitant to simply flip the IPv6 switch and add an IPv6 address to their DNS records so everyone can reach them over IPv6. They fear becoming unreachable to users with broken IPv6 connectivity. Google did measurements in this area in 2008, which showed that at that time, 0.09 percent of their users would have to suffer delays as their computers try to connect over IPv6, and eventually fail and retry over IPv4.

So Google created the Google over IPv6 program, where network operators have to promise the search giant that they have good IPv6. In turn, Google will respond to DNS requests from those networks with IPv6 addresses for various Google properties such as google.com and youtube.com. The hoi polloi have to make do with just IPv4 or type ipv6.google.com. (Only works if you have IPv6.) Facebook has www.v6.facebook.com—with address 2620:0:1cfe:face:b00c::3. Ah, hexadecimal humor.

Yahoo, on the other hand, has suggested only giving IPv6 addresses to DNS servers that send requests over IPv6. (There is nothing wrong with sending a request for IPv6 addresses over IPv4 or the other way around, though.

Source: http://arstechnica.com

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