Detected Arp Conflict

08:34:54 dhcp,warning Detected conflict by ARP response for 192.168.111.122 from AA:D7:EE:xx:xx:xx
08:34:57 dhcp,info MainDHCP assigned 192.168.111.119 for AA:D7:EE:xx:xx:xx

Starting to see these in my DHCP tables at a few sites.

The IP address where the conflict is, reports as mac address 00:00:00:00:00:00.
The the device takes the next address in the pool.

I am leaning towards this being an issue with a specific wireless manufacture (Cambium). As I don’t see this error on site with other wifi manufactures(Mikrotik, UniF–k, Ruckus).

Anyone else seeing something similar?

Found an old post about “Something Else” having Proxy-Arp enabled.

Still trying to muddle through.

Check ARP Table for duplicate’s
http://forum.mikrotik.com/t/multiple-arp-entries-for-the-same-mac/162659/18

No arp table duplicates.