Hello,

I'm seeing this error while viewing the router online status physical connection page. We do have some static IP settings and I have checked and they are all correct. We have DHCP running from 10.14.3.100 onwards so nothing there.

I also have a guest wifi set up on 192.168

Any suggestions as to a solution here and how to find the conflicting device?

how to find the conflicting device

The MAC address you show has a vendor code belonging to Quanta Computer Inc, apparently: "It is the largest manufacturer of notebook computers in the world". Maybe that gives you a pointer to the guilty device?

Hello,

Yes I did look that up. We only have one machine with very similar MAC address (Compaq Laptop)

Is there a way to see if it's a conflict on the wired LAN or the guest wireless?

You could try a DOS 'arp -a' command which lists IP to MAC relationships, but this would only work if the computer you are doing this on has had some interaction with the offending device! you may need to try pinging suspect devices to get the arp table populated.