I have a device that communicates with a laptop computer through a “USB Ethernet/RNDIS Gadget” driver. It uses a fixed IP address (192.168.1.100) for its connection. In one case, this is what I experienced and I do not know how to tackle this problem.
If the laptop in question is already connected to the internet, say via Zoom, when I connect my device to it, it would not start. But if I connect my device to the laptop before starting, say a browser, or Zoom, to connect to the internet, my device now works but the computer cannot connect to the internet! The IT person in charge of this computer reported that
“We don’t use the 192.168.1.x subnet at our place so the issue
shouldn’t be an IP conflict. I had our network guys check to see if
they could detect a rogue DHCP server and they couldn’t see anything
either. I also ran a scan of the whole subnet and didn’t detect
anything in that range either. The laptop itself has an IP address of
10.1.xxx.yyy which was assigned via DHCP.”
My application needs to connect to an internal computer network to access a database as well, therefore, I need both my device and the network connection to work with this laptop. So what is the problem? Could this be a Firewall issue? Is it possible that somehow the Windows’ (Win 10) or a special Firewall forbids this scenario?
Thank you.
(I posted this question on Stackoverflow. I was asked to post here! I hope it is OK)
