Interface: The interface to which the DUID belongs.
Client DUID: A Device-Unique Identification (DUID), which uniquely identifies the interface. You can use the DUID (or a name associated with the DUID) to determine how the interface performs prefix delegation for a particular router or host that has that particular DUID.
The format for this value is xx:xx:xx:xx:xx:xx:xx:xx, as with 00:03:00:01:aa:bb:cc:dd:ee:ff.
Name (Optional): A descriptive name that identifies the DUID.