This read-create BITS value indicates the connection types for which accounting information is collected by this entry; the ietfAccountControl(0) bit defers to the base row's acctngSelectionType, while other bit positions override it. Admins set this to fine-tune which connection categories, such as connectionless Layer 2, this specific accounting selection entry covers. For example, setting the connectionLessLayer2(1) bit overrides the base selection type to collect accounting data specifically for connectionless Layer 2 traffic on this entry.