loglevel - ip client in logfile

Hello from france, My question is about logs and so loglevel parameter for openldap 2.0 ( yes, this is and older version...! migration is in progress...) Basically, I want my logs contains IPs clients to do some tuning because of some CPU overloads occures while we are installing a new RADIUS client for this LDAP server. So I try to change my loglevel ( as describe here http://www.zytrax.com/books/ldap/ch6/#loglevel ) and no IP appears in logfile while loglevel is set to -1 (or whatever number). Is it possible ? Is my openldap version too old ? Is there other things to do ? Thanks, any help would be appreciate ! Christophe Dumonet.