This object enables or disables logging of DNS or HTTP request and response activity and the server-selection process to syslog, using severity level info(7). Enabling this gives an admin an audit trail of exactly which server was selected for which client request and why, which is invaluable when troubleshooting a complaint that a particular client keeps getting routed somewhere unexpected. If a customer reports being repeatedly directed to a distant data center instead of a nearby one, an admin would enable this object temporarily to capture the actual selection decisions and metric values behind them.