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Yahoo has made public its proposal to hack the domain name system (DNS) so as to resolve issues with migrating to IPv6 from IPv4. Internet protocol version 4 (IPv4) was the first widely deployed version of IP that supports 32 bit addresses (equating to 4,294,967,296). The issue of exhausting the 32 bit address allocation was identified in the 1990's, prompting the development of IPv6. IPv6 supports 128 bit addresses, obviously offering a more expansive address system. The article claims that a 'significant percentage of internet users have broken IPv6 connectivity'. Yahoo thus proposes to switch users to IPv4 connectivity once detection of broken IPv6 connectivity is realised. Yahoo will forward its proposal to the Internet Engineering Task Force, however questions of DNS trust and security will surely be the two topics of debate in testing this proposal.

The internet is running out of web addresses. And here another article: http://news.techworld.com/networking/3218712/google-microsoft-and-yahoo-talk-about-ipv6-whitelist/ Google, Microsoft and Yahoo talk about IPv6 whitelist and plan to create a shared list of customers who can access their websites via IPv6

We've talked about the ip address in first half of the semeseter, IPv6 summit meeting at 19, May pointed out the essential need for IPv6 and the possible issue afterwards.