Hi! I have a question about failover configuration.

I have freeradius + sqlippool module for ip-assigning. I have 2 databases for redundancy (described in sql1 and sql2).

my file from enabled-server:

server allauth {
        listen {
                type = auth
                ipaddr = *
                port = 1812
        }
        authorize {
                auth_log
                update control {
                        Pool-Name = 'main_pool'
                }
                redundant {
                        # we need this only to get new Pool-name, if user exist in our defined group.
                        sql1
                        sql2
                }
                update control {
                        # any user must be accepted.
                        Auth-Type = 'Accept'
                }
        }
        post-auth {
                redundant {
                        sqlippool1 # this module use sql1 for assigning
                        sqlippool2 # this module use sql2 for assigning, if first will fails.
                        main_pool
                }
                reply_log
        }
}

I've run the freeradius, but when I turned off my first database (sql1), my redundancy in post-auth return incorrect code:, sqlippool1 returns "noop", neither "fail".
May be I've selected the wrong way to solve my task? Any comments are welcome... How can I switch ip-assigning on sqlippool2, when sql1 (used by sqlippool1) doesn't work?

some information from log:

Wed Feb 3 15:36:29 2010 : Error: rlm_sql (sql1): Failed to connect DB handle #1
Wed Feb 3 15:36:29 2010 : Error: rlm_sql (sql1): reconnect failed, database down?
Wed Feb 3 15:36:29 2010 : Error: sqlippool_command: database query error in: 'COMMIT'
Wed Feb 3 15:36:29 2010 : Info: [sqlippool1]   expand: SELECT id FROM radippool WHERE pool_name='%{control:Pool-Name}' LIMIT 1 -> SELECT id FROM radippool WHERE pool_name='main_pool' LIMIT 1
Wed Feb 3 15:36:29 2010 : Error: rlm_sql_mysql: Socket not connected
Wed Feb 3 15:36:29 2010 : Debug: rlm_sql (sql1): Attempting to connect rlm_sql_mysql #1
Wed Feb 3 15:36:29 2010 : Info: rlm_sql_mysql: Starting connect to MySQL server for #1
Wed Feb 3 15:36:29 2010 : Error: rlm_sql_mysql: Couldn't connect socket to MySQL server user@ip:dbname
Wed Feb 3 15:36:29 2010 : Error: rlm_sql_mysql: Mysql error 'Lost connection to MySQL server at 'reading initial communication packet', system error: 0'
Wed Feb 3 15:36:29 2010 : Error: rlm_sql (sql1): Failed to connect DB handle #1
Wed Feb 3 15:36:29 2010 : Error: rlm_sql (sql1): reconnect failed, database down?
Wed Feb 3 15:36:29 2010 : Error: sqlippool_query1: database query error
Wed Feb 3 15:36:29 2010 : Debug: rlm_sql (sql1): Released sql socket id: 1
Wed Feb 3 15:36:29 2010 : Info: [sqlippool1] IP address could not be allocated as no pool exists with that name.
Wed Feb 3 15:36:29 2010 : Info: +++[sqlippool1] returns noop
Wed Feb 3 15:36:29 2010 : Info: ++- policy redundant returns noop