I assume you just leave the keyring on your desk/in some drawer? I had handcuff keys on my normal ring and the pointy thing on the keys (for double-locking) made holes in my jeans, so you’d be crazy to go around with those for opening SIMs in your pocket.
Aha, I think I misunderstood your situation then? I assumed you’re running these routing rules on your client machine, so you’re able to access your ssh server without it going over the VPN – not that your server is running a VPN active that blocks external connections…?
But if I didn’t misunderstand, I’d mean the (assumingly static) ssh server’s IP.