Hi any_junk and welcome to the eForum
I've got to be honest. I'm not entirely sure how the VMC software can affect a LAN connected via Ethernet.

Very puzzling.
The VMC software is effectively just a GUI (Graphical User Interface) that runs over the top of the Windows Connection Manager. You can try connecting to the internet using the 'Connect to' option within the Start Menu. You should see a Vodafone connection within there that you will be able to use which bypasses the VMC Software.
If anyone else have got any thoughts on this please feel free to let us know.
Thanks
Wayne
eForum Team