Today I discovered Tailscale, an easier and more elegant way to deploy and manage WireGuard peers for a flexible and secure mesh VPN.
I think I'm in love.
https://tailscale.com/
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Ooh, and it's got an easy-breezy-beautiful community add-on for Home Assistant!
https://github.com/hassio-addons/addon-tailscale
That makes adding/configuring an exit node *even easier* - and I kind of wish I'd thought to look for this before I rebuilt my VyOS virtual router to add the tailscale package last night.