NSF recommendations in april 2003 report reflections on past, present, & future of networking research suggest need for emphasis on radical innovation and paradigm shifts multi-disciplinary aspects of fundamental research in networking outside-the-box thinking, beyond the success of the Internet avoid "network innovator's dilemma" -- too involved in improving the existing Internet technology to observe novel and disruptive technologies increased reproducibility of networking research ease burden of reproducible experiments on complex systems strong sense in here of `being done with the Internet' as if the most important research problems there have been solved