>The simple answer is don't use dynamic hosts.

>FreeRADIUS reads the clients file once at startup, resolves the IP's and
>then stores those.  It won't know about the new IP until the daemon is
>restarted (or in theory HUP'ed when that is fixed).

>If you must use dynamic hosts, then you will need to specify an IP range
>like this:

>client 192.168.0.0/24 {
>       secret          = testing123-1
>      shortname       = private-network-1
>}

>That would allow a NAS to have any of 254 different IP's and still be
>able to talk to FreeRADIUS.  It would also allow anyone else on those
>IP's who wants to talk to you NAS and can figure out the secret to
>potentially do naughty things.