I tried the new packadge I found a few issues related with the new feature to add your own interface, however I think it's ready for extras since the app still operates orderly. And I belive the pyside issues have been ironed out.

The issues are:

1) Newly added interface is not present in the wiget.
2.) The recorded session on the new(custom) interface is not visible in the 'Networking Sessions' window
3) I only managed to add the 'tun0' interface while the connection was active. (that might not need correction, but maybe some note on the 'Networking Interfaces' pane.

Thanks Anatoliy for the great effort you're putting into this and for the regular updates.