This post is the result of me going down a several week long XNU rabbit-hole after reading this post by Thomas Claburn on Exclaves, more on that later. I’ve tried my best to condense all the information into a single blog post. I’ve also tried to keep sections self-contained so you can skip around using the table of contents, this does come at the cost of repeating myself in some places, so thanks in advance for your patience. While I’m confident of my understanding on this topic, some errors ar...