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Title: high and low leveles mixed together
Review: The book is thorough, but we have RFCs for that ... The author keeps flooding the reader with details (e.g. port numbers, sizes, addresses) even when trying to explain principals. There should be better seperation between high level concepts and implementation details that does not exist in this book (and does in other books). Also, a lot of the diagrams are meaningless, and it seemed to me a lot of the times they were here only to make the book thicker. Most of the examples are trace of packets, which are difficult to follow. High level flow examples are missing.
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