All the files in this subversion repository are licensed under a Creative Commons Attribution-Share Alike 3.0 Unported License. Like any open-source project, the future of Computer Networking Principles, Protocols and Practice will depend on the work of contributors. Most of the text has been written by Olivier Bonaventure. Laurent Vanbever, Virginie Van den Schriek, Damien Saucez and Mickael Hoerdt have contributed to exercises. Stéphane Bortzmeyer has provided many comments that have improved the book.