Pangolin, Newt, Gerbil and custom ports

I have been playing around with [Pangolin](https://github.com/fosrl/pangolin), a really nice management system for exposing internal services over HTTPS. However, I found that its internal wireguard networking does not play nicely if you already have another wireguard system, like tailscale, on the box. The solution was actually simple, but has a potential tripwire.