Here is the author's latest update and the revelation of the mystery: https://devnonsense.com/posts/asymmetric-routing-around-the-firewall https://devnonsense.

Here is the author's latest update and the revelation of the mystery: https://devnonsense.com/posts/asymmetric-routing-around-the-firewall https://devnonsense.com/posts/asymmetric-routing-around-the-...