The Internet Protocol (IP), developed during the mid-1970s, is the backbone of a family of protocols that includes TCP, UDP, RIP and virtually every other protocol used for Internet communications. The current version of the IP, version 4 (IPv4), has been in use for more than 20 years. IPv4 has proven to be amazingly adaptable over the years; however, the demands placed upon the protocol at its inception pale in comparison to the demands of the millions of hosts that are now connected to the Internet, and IPv4 is finally beginning to show some chinks in its armor. IPv6 deals with many of the shortcomings of IPv4 and introduces some new features. This paper discusses three of the major problems addressed by IPv6.

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