Multiple LDAP Servers for ldap Authentication

Hi,

I am going through ldap authentication documents in PostgreSQL and found that we can specify multiple ldap servers but sure how. I have put two entries in double quotes like below:
--
host all all 0.0.0.0/0 ldap ldapserver="server1.com server2.com" ldapprefix=PROD01\

There is no complain when reloading the pg_hba.conf file however when server1.com is down the connection just times out instead of trying server2. Does anybody have idea how to configure it or how to make this work.

Regards,
Virendra

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