The object is used determine how the node was added to this table. If the node was learned by listening to the network then on reads network(2) should be returned. If the node is another NMM or known concentrator device, then nmm(3) is returned. If the device's MAC address is unknown because of some unknown but legal configuration, then other(1) should be returned and s3EnetShowNodesMacAddress should return all zeros. If the node was entered into the AllowedNode list via management control, and was seen on a port that it was authorized to use, then authorized(4) should be returned.