Early adopters of Microsoft's new Vista operating system are reporting problems with its implementation of IPv6, a long-anticipated upgrade to the Internet's primary protocol. IPv6 supports a 128-bit addressing scheme, which lets it support an order-of-magnitude more devices that are directly connected to the Internet than its predecessor, IPv4. IPv6 also has autoconfiguration, end-to-end security and other enhancements.
Vista supports IPv6 by default. Vista runs a single-stack, dual-IP-layer architecture, which means it is IPv4- and IPv6-capable out of the box. It supports tunneling of IPv6 traffic over an IPv4 backbone and includes IPSec that works for both IPv4 and IPv6. Network management software vendors and users are reporting problems with Vista's IPv6 implementation.
Microsoft, Windows Vista, IPV6, Article