May 16th news, according to foreign media reports, due to the depletion of IPv4 address, Google has begun to test the water IPv6 search, and launched the ipv6.google.com search page.
currently, Internet address resources are very tight. Since IPv4 has 4 billion 300 million IP addresses, but currently only about 19%. By 2012 or 2013, the rest of the remaining 19% will be fully distributed. American Internet number registration management center (ARIN) had previously called for, due to the upcoming depletion of the Internet IP address, the industry must transition to IPv6 as soon as possible. IPv6 uses a 128 bit address length, which can provide an unlimited address.
at present, the mainstream operating system and some large network equipment vendors are beginning to support IPv6. Today, Google also embarked on the road to IPv6, and launched the IPv6 search page ipv6.google.com. For IPv4 users, simply can not access the ipv6.google.com page, because the page supports only IPv6 connection.