My brand new 55S535 TV was upgraded a couple of days after I received it and now my MAC address is all zeros. The ethernet connection works fine. I have factory reset, power cycled and upgraded via USB and nothing worked.
Roku TV: A119X
Model Number: 55S535
Serial Number X00300DRE9DC
Software Version: 9.3.2 build 5006-88
Device ID S05NY05RE9DC