This read-write flag enables or disables logging of events in the Neighbor Binding Table, such as bindings being added or removed. An admin turns this on to get an audit trail of IPv6 neighbor activity for security review or troubleshooting spoofing attempts, or turns it off to reduce log noise on a busy switch. For example, enabling it before an IPv6 first-hop security rollout lets the admin review the log afterward to confirm which hosts were bound and when.