RichardLetts thank your for the reply
I too am also somewhat glad that this isn't happening only with me.
Seems a likely situation with your analysis.
I am not sure exactly how UDT matches info from the L3 device arp tables to MAC addresses found on L2-only devices, but I believe that somewhere UDT keeps its own master database of MAC & IP addresses and displays the relevant info for each node.
Seem like in our case, the UDT database is not updating with the L3 data retrieved from the L3 device
or
UDT isn't doing proper lookups on MAC addresses found on L2 devices to its master database, so it isn't getting L3 data for the MAC's
I have Case #592725 opened for this. Tech Support are currently reviewing my diagnostic files.
Lets see what they uncover
Did the v3.0.2 provide any relief to your situation? even if temporary?