Oh, damn, this one slipped my mind. VPN is used for internet supply. One can't brows the internet unless he has connected to a certain PC via VPN. Some while ago if one hasn't NOT connected, he had only the LAN to work with. Now without the VPN connection is like being a stranded computer.
Is making a VPN connection the solution if it's also being used to connect to the internet?
If it's possible to have more than one VPNs conncted at once, then how exactly should it be configured between him and me?
Yeah, the ISP is a monopolist and is trying make its services the only possible ones. On top of that, most of them suck but that's subject of a different discussion so I'll stop here.