@biomed32uk I just noticed that all your VM networks are connected to the same switch's port. While the switch, as a layer-2 device, usually counts statistics based on port, not on IP, so it cannot...

@Madmaiike If you are more familiar with DHCP option 138, they also have an FAQ about this: https://www.tp-link.com/en/support/faq/2764/ Hope it helps!

Sure you don't need the internet when configure the whole set of devices as the video shows.

I was told the download link above is the official firmware of OC200. Don't know why they haven't released it on their website.

@PeterHor Yes. In standalone mode, you can enter the local subnet manually, so that you can specify the local subnet as the VPN IP of the PC.

V1 is too old. I think you should update to V3 or other new model.