Two lines from log file
dhcp,warning DHCP offering lease 10.9.222.221 for 90:5F:2E:EE:4C:B7 without success
dhcp,warning DHCP offering lease 10.9.222.217 for 00:0F:04:B3:72:06 to 00:27:22:0E:4B:96 without success
The first one : for some reason the client didn't get the offered ip address
The second one??????
Means that the real client is 00:0F:04:B3:72:06 but connects through 00:27:22:0E:4B:96????