Network connection(s) for node001

Node001 is my new Raspberry Pi. I'm going to set it up as a k3s machine, and I want it to have access to some of my public IPv6 addresses (Go Mythic!)

I'm also thinking about isolating it from the local network somehow, but I don't think I can do that without having it behind some kind of hardware firewall (which would need to be ptah in this context).

I can get a WiFi card for ptah, and hang node001 off that, since I've got a "No more cables near ptah" requirement.

...

Raspberry Pi supports 'ac' WiFi ("WiFi 5", apparently), and a new card for ptah looks like £20-30. So let's work on that basis.

I can route everything from the card through to wepiu via the VPN, so even if naughty people completely own the pi, they won't be able to break into the house network.

I can also setup a hub so that the pi's can talk over ethernet to each other.