2025-10-2911 min readThis post is also available in 日本語 and 한국어.There is a theory which states that if ever anyone discovers exactly what the Linux networking stack does and why it does it, it will instantly disappear and be replaced by something even more bizarre and inexplicable.There is another theory which states that Git was created to track how many times this has already happened.Many products at Cloudflare aren’t possible without pushing the limits of network hardware and software to del...