MAC cloning on SG-1100
How do I clone my ISP router MAC address on to my SG-1100 WAN interface
I don't have a SG-1100 but I'd expect it to be in the same place as my SG-4860:-
This is what mine shows and its greyed out
Oh I forgot they’re switch ports, I guess you’d need to go into the switch part of the config and change the main interface mvneta0.