LDAP authorization filter question

[J. Fowler]

Hello,
( radiusd: FreeRADIUS Version 1.0.0-pre3 ) solaris, iplanet directory 
server 5.2 ...

We are attempting to authenticate multiple users based on which 
Called-Station-ID or NAS-IP-Address.  We would like to dynamically build 
the LDAP search filter based on the originating source. Is this 
possible? What I would like to do is set the attribute "userclass" to 
some value and use the value in the LDAP filter. If this is not 
possible, how can i authorzie multiple sources using unique ldap search 
filters?

users file:
DEFAULT    Called-Station-ID =~ "8888$|7777$|6666$", Auth-Type := LDAP
          userClass = ourDialup,
          Fall-Through = No
DEFAULT    NAS-IP-Address == 192.168.1.150, Auth-Type := LDAP
          userClass = ourWiFi,
          Fall-Through = No
DEFAULT    Auth-Type := Reject
          Reply-Message = "UNKNOWN Authentication method"
radiusd.conf
ldap {
     identity = "uid=someuser,ou=site,dc=..."
     password = xxxxxxxx
     basedn = "ou=site ... t"
     filter = "(&(uid=%{User-Name})(userClass=%{userclass}))"
    ...
}
Debug information showing ldapsearch filter NOT being set.
rlm_ldap: - authorize
rlm_ldap: performing user authorization for test666
radius_xlat:  '(&(uid=test666)(userClass=))'
radius_xlat:  'o=cvip.net'
rlm_ldap: ldap_get_conn: Checking Id: 0
rlm_ldap: ldap_get_conn: Got Id: 0
Any help would be greatly appreciated.
Thanks,
Jay
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