Clear, "simple" control of the network stack and connectivity. The ability to start up totally off-line until manually establishing the desired connection. Ne

Clear, "simple" control of the network stack and connectivity. The ability to start up totally off-line until manually establishing the desired connection. Network connectivity that can be made dependent upon having a working VPN connection up, and that dies completely upon failure of that connection. Everything can clearly be made to go through the VPN connection, DNS, etc. IPv6 can be turned off if needed (e.g. for Comcast). A single, if widget-filled and "busy", dialog box for managing this connectivity. I realize a lot of this isn't strictly under Ubuntu's purview, but you said "anything". I want not just to manually manage my own connectivity, at the terminal (and even then, the "die completely upon VPN failure" is not straightforward"), but for my family members, etc., to be able to do so, themselves.