Comcast continues to outpace rival U.S. cable companies in the development of next-generation Internet connectivity and content.

Last week, the ISP was among the first carriers to demonstrate end-to-end IPv6 transmission for residential broadband customers. IPv6 is a long-anticipated upgrade to the Internet’s main communications protocol that provides more IP addresses, built-in security and easier configuration than the existing IPv4 protocol.

Comcast’s demonstration, which was held at the North American Network Operators’ Group (NANOG) meeting, featured IPv6-enabled Web content from three leading providers: The Planet, a Web hosting company; Netflix, a movie distribution Web site; and Limelight Networks, a video streaming service.

More from PC World…