This object can be set by a management station when it detects that there is a duplicate MAC address. This object is OR'd with icfVgRptrDetectedDupAddress to form the value of the 'D' bit in training response frames on this port.

The purpose of this object is to provide a means for network management software to inform an end station that it is using a duplicate station address. Setting this object does not affect the current state of the link; the end station will not be informed of the duplicate address until it retrains for some reason. Note that regardless of its station address, the end station will not be able to train successfully until the network management software has set this object back to 'false'. Although this object exists on cascade ports, it does not perform any function since this repeater is the initiator of training on a cascade port.