Hundreds of Unknown Mac Address devices appear on LAN client list
Omada Controller, OC200 V1
Firmware Version: 1.15.2 Build 20220323 Rel.60717
Router TL-ER7206 v1.0
Firmware Version: 1.2.1
L2 Switch TL-SG3428X v1.0
Firmware Version: 1.0.3
Recently I've noticed hundreds of unknown MAC addresses without IP address listed as connected devices in my clients list, some are on the same port which only one wired device connected. If I disconnected that device and rebooted the network system, it will appears on the other port with connected device.
Could it be virus or malware?
Anyone have the same problem please share your solutions, thanks in advance!