Can't get checkrad to be called

[Dan Brisson]

I was wondering if someone could help me determine why checkrad isn't 
being called.  I've followed the directions in the doc/Simultaneous-Use 
but still cannot get checkrad to fire off when I login.  It will check 
radutmp, but never reaches out to my NAS with checkrad, as evidenced 
here from radiusd -X:

+- entering group session {...}
[radutmp]       expand: /var/log/radius/radutmp -> /var/log/radius/radutmp
[radutmp]       expand: %{User-Name} -> testuser
++[radutmp] returns ok
Using Post-Auth-Type Reject


In this case, testuser was already logged in as verified by radwho, but 
why didn't it go out and check my NAS?  I'm using a Nomadix HSG for a 
NAS, which doesn't have a definition in clients.conf, but I've been able 
to get /usr/sbin/checkrad to return the following by modifying the 
"pr3000" definition:

[root at hologram radius]# more checkrad.log
Wed Jun  1 22:11:34 2011 checkrad pr3000 10.1.10.20 1 testuser 1
snpwalk: /usr/bin/snmpwalk -r 1 -t 5 -v2c -c 'public' 10.1.10.20 
.1.3.6.1.4.1.3309.1.2.2.18.1.1.5
   Returning 1 (double detected)

So it would seem if I could get FR to perform checkrad, I'd be in good 
shape.

Can I provide any other data?  I'm using SQL for authorization and 
accounting.  I'm on version 2.1.7-7.el5 of FreeRadius.

TIA,

-dan