different authentication methods in users file

Hi list I'd like to authenticate some users request coming from a firewall with perl, and some other coming from a Brocade box with LDAP. Each authentication alone works, but I haven't figure out how make things work toghether. This combinaison works, but I'd rather have a generic statement : firewalluser Auth-Type == perl Fall-Through = no DEFAULT Auth-Type == ldap Fall-Through = Yes DEFAULT Huntgroup-Name == netadmin Auth-Type = ldap, Brocade-Auth-Role = "admin", Fall-Through = no if I replace the user name firewalluser by DEFAULT, and add a property like NAS-IP-Address = 192.168.9.111, or Login-IP-Host = 192.168.9.111 that doesn;t work. What's wrong ?