Thanks Abu Baniaz, I read both of those threads and because I don't know much about networking/routers/firewalls etc and am just a regular user my understanding from the threads is that the LAN connections are actually fine and the boxes are in fact connected to the internet but due to how the box/Vix checks for internet access (via Googles 8.8.8.8 DNS?) if that check is not successful the Vix Firmware behaves as though an internet connection doesn't exist and prevents the box from connecting to the internet to download plugins or to update firmware etc.
Am I close to correct?