hydrofix (1253498) writes "With the advent of ultra high-definition IPTV, consumer demand for ever higher Internet bandwidth shows no signs of relieving. Researchers are also finding new ways to enhance transmission speeds, with a team from University of Southampton recently approaching the speed of light and speeds of up to 73.7 terabits-per-second in hollow fiber transmission, an improvement over traditional non-hollow fibers, where light propagates 31% slower than in vacuum. This has prompted the Internet Engineering Task Force (IETF) to think ahead of time, and start preparing the Internet's key protocols for the inevitable moment when Internet users start communicating at speeds faster than light. RFC 6921: "Design Considerations for Faster-Than-Light (FTL) Communication" highlights some of the challenges this brings to Internet protocols, that were previously designed with the assumption of simple causality in mind."
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