Re: [pfSense Support] Message repeating in System Log, can't find the reason

[Curtis LaMasters]

Check your ARP table and see if possibly that IP is there.  I'm guessing
it's coming from your ISP's edge device. I see this every now and then with
Cox Cable Modems.

-- 
Curtis LaMasters
http://www.curtis-lamasters.com
http://www.builtnetworks.com