The Advanced Networking Pack for Windows XP is a set of platform technologies designed to run on Windows XP SP1 to enable the use and deployment of distributed, peer-to-peer applications based on Internet standards. The update includes a new version of the IPv6 stack, including support for NAT traversal for IPv6 applications. An IPv6 firewall is included to protect the end-user"s machine from unsolicited IPv6 traffic, while the peer-to-peer platform makes it simple to write distributed solutions.