From: "Lloyd Palfrey" <Lloyd at wsufftrust dot org dot uk>
> I am using MAC address RADIUS authentication for captive portal and I
> keep getting the following in the logs.
> Nov 21 11:22:38 /kernel: arp: 172.16.3.175 moved from 00:12:f0:ca:d0:71
> to 00:12:17:a9:9c:80 on sis0
> 00:12:17:a9:9c:80 Doesn't exist in the radius server.
> Anyone got any suggestions?
> Many Thanks
First, what is your topology? Do you have things behind APs that use the
APs MAC? Could you have a user "borrowing" IP addresses? Could a given
user be swapping NICs?