1 freeradius with 2 openldap (multi master)

Hi All I have one freeradius and 2 openldap (multi - master). And I want my freeradius use the second openldap if the first crash. So in freeradius I instantiate the module ldap : Ldap ldapmaster { [...] } Ldap ldapbackup { [...] } And in my site-available/default I load the two modules. If my two openldap are alive, authentication succeed, but if one of them fall, authentication failed, so like this I have a « AND » between modules, and not a « OR » like I would. I don't know if I am really clear, i don't speak very well, sorry. So If some understand the problem that I try to describe and if you know how I can fix my problem, could you help me please ? thanks, Regards, François