I get frustrated with how networking is taught in many places. Rather than approaching it as a science, students are merely told to memorize the specifications of the existing deployed devices. Instead, I believe students should be taught the concepts, such as "how would one acquire a network address without being configured", and then study a bunch of different approaches that could exist, or have existed in other protocols. I believe that understanding design tradeoffs and alternatives will be far more beneficial than memorizing the details of one protocol suite, and will enable the students to think critically, and will increase their ability to design new things.