I keep seeing this error in my logs. Not too often but, a little concerning because it could conceivably cause a DOS on my LAN side. Those below are the only ones I can get to this morning but I have seen them sprinkled throughout the logs since installing the router 2 weeks ago. What seems suspicious is that the MAC addresses change and they are for legitimate devices but when I find the device and check them the IP is normal. This suggests to me that it's something trying to cause a DOS and trying to hide. The router is handling it beautifully since the DOS was working against the SonicWall that got replaced with the pfSense box. 192.168.1.1 is the gateway and there are about 100 devices on this network. Anyone have any suggestions on what this is and how I can find it?
Aug 1 08:48:43 kernel arp: 00:23:69:a9:5d:c5 is using my IP...