so-called killswitch

It’s an ad

would permit no internet access out of the container outside of the VPN host

And that exactly the same as using the VPN network interface. No need to add more complexity to ones setup.

Some of these players even skipped the unskippable intros and always started at the main menu. The best thing for legit buyers and enthusiasts back in the day. And don’t forget the (S)VCD support and DivX/Xvid support. Good old times.