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  • Internet Protocol version 6 is the latest version of the Internet Protocol, the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet. IPv6 was developed by the Internet Engineering Task Force to deal with the long-anticipated problem of IPv4 address exhaustion. IPv6 is intended to replace IPv4, which still carries more than 96% of Internet traffic worldwide as of May 2014. As of February 2014, the percentage of users reaching Google services over IPv6 surpassed 3% for the first time. Every device on the Internet is assigned an IP address for identification and location definition. With the ever-increasing number of new devices being connected to the Internet, the need arose for more addresses than the IPv4 address space has available. IPv6 uses a 128-bit address, allowing 2¹²⁸, or approximately 3.4×10^38 addresses, or more than 7.9×10^28 times as many as IPv4, which uses 32-bit addresses. IPv4 provides approximately 4.3 billion addresses. The two protocols are not designed to be interoperable, complicating the transition to IPv6. Wikipedia