2 IPv6 Stack implementations

2.1 Microsoft Windows XP

Please refer to http://www.research.microsoft.com/msripv6/msripv6.htm for detailed information.
The Microsoft - IPv6 stack is still in a research - state at the present time.

Several IPv6 ready applications can be found at http://win6.jp

2.2 NetBSD 1.6.1

The IPv6 Stack for NetBSD is provided by the KAME-project from japan. ( http://www.kame.net  )
They not only offer an IPv6 stack but are also developing many patches for existing userland software in order to run over IPv6.
The KAME-IPv6 stack is part of the NetBSD operating system and is being delivered with it.

For more information, please refer to: http://www.netbsd.org/Documentation/network/ipv6/

2.3 Linux

The IPv6 stack for Liux is implemented by the USAGI Poject. (http://www.linux-ipv6.org) An excellent site for IP6
on Linux is hosted by Peter Bieringer. http://www.bieringer.de/linux/IPv6/index.html