Support for Internet Protocol version 6 (IPv6), a new suite of standard protocols for the Network layer of the Internet, is built into the latest versions of Microsoft Windows, which include Windows 7, Windows Server 2008 R2, Windows Vista, Windows Server 2008, Windows Server 2003, Windows XP with Service Pack 2, Windows XP with Service Pack 1, Windows XP Embedded SP1, and Windows CE .NET.
IPv6 is designed to solve many of the problems of the current version of IP (known as IPv4) such as address depletion, security, auto-configuration, and extensibility. Its use will also expand the capabilities of the Internet and enable a variety of valuable and exciting scenarios, including peer-to-peer and mobile applications.
Read all about IPv6 at http://technet.microsoft.com/en-us/network/bb530961.aspx?ocid=soc-n-SA-loc-services-omers
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