Has anyone managed to get this setup at their router level? I am planning to go nomad, and I am trying to see if I can use USA VPN while I'm in Brazil. My employer doesn't allow working from non-US IPs.
This is what I do - I can't use router-based VPN or piHole type stuff because people on my network work on ad-related products or use sites that don't play well with VPNs or DNS-block lists of advertisers, for example.
Of course, you can terminate the VPN software manually and the kill switch and access sites using no VPN if you want, which allows for mistakes, but pretty rare in my experience. Best is to simply have another machine that doesn't have VPN software on it and you use over the naked Internet.
Also if you are new to the game, make sure you use wiregaurd, it leaves the large complex VPN protocols of old in the dust. It adds almost no latency to my connection, sometimes speeds things up.