This article brought to you by LWN subscribersSubscribers to LWN.net made this article — and everything that surrounds it — possible. If you appreciate our content, please buy a subscription and make the next set of articles possible. What is IP fragmentation, why is it important, and do people understand it? The answer to that last question is "not as well as they think". This article will also answer the rest of those questions and introduce fragquiz, a game that I wrote to allow players to g...