The chief task in life is simply this: to identify and separate matters so that I can say clearly to myself which are externals not under my control, and which have to do with the choices I actually control. Where then do I look for good and evil? Not to uncontrollable externals, but within myself to the choices that are my own…
I am attempting to solve this via firewall. I block all RFC1918 source traffic on the LAN interface but allow all traffic on the VPN interface. That seems to function reliably. I’ve tested that I can egress while the VPN is active but not at all when it goes down.
If this is not a good solution, let me know, but it seems reliable and doesn’t require any other tooling.
I realize this doesn’t fit your use case since you have other connections you don’t want in the VPN, but I’m still curious if others use this setup.
Born in the early 80’s no doubt.