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What is IPv6 ?
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IPv6 stands for Internet Protocol versions 6. The current version is called IPv4. The explosive growth of the Internet is the primary reason a new version of IP is being developed. IPv6 has:
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ability to better handle video and audio transmission
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enhanced addressing scheme
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support for data integrity, authentication, confidentiality
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IPv6 isn't backward-compatible with IPv4. A technique called tunneling lets the two protocols coexist. IPv6 packets are tunneled by encapsulating the packets in IPv4 datagrams and routing them over the IPv4 network.
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IPv6 (IPng = next generation) completely redefines the nature of Internet addresses; IPv6 is 128 bit long. It is large enough to assign unique IP address for every proton in the earth, or install several billion computers on every square meter of the Earth's surface.
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Fore more information see:
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http://playgroud.sun.com/pub/ipng/html/ipng-main.html
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