AQ Query and LDAP Query

I try to use both of then. When I use AD Query the only way to work is with use pool. It is impossible to work with direct server ip or FQDN. I receive a error. Like can't find Kerberos server. The AD authentication work fine with domain FQDN. I want use the FQDN of the domain. If I configure LDAP query the AAA just resolve one time the FQDN and put the IP in config. I just want use FQDN of the domain to have dynamic Domain controller list. I can't kwon when the AD team update, add or remove Domain controller so the best way is use Domain FQDN.