code: def _bind_indirect_user(self, ldap, con):
          
          indirect_user = self.auth_ldap_bind_user
          if indirect_user:
              indirect_password = self.auth_ldap_bind_password
              log.debug("LDAP indirect bind with: {0}".format(indirect_user))
              con.bind_s(indirect_user, indirect_password)
              log.debug("LDAP BIND indirect OK")
docs: If using AUTH_LDAP_BIND_USER bind this user before performing search
              :param ldap: The ldap module reference
              :param con: The ldap connection