The Ethernet ports are finicky to start.
Twice now, the power dies and it when it comes up, everything works - but zero throughput on the Ethernet ports. Within the GUI it picks up the devices (ie TV, PS4) etc and the TV detects it has been plugged in - but zero throughput. I battle for hours ... and then go sleep.
I wake up, and everything is perfect again.
It did this last night - I killed the power on it and when it came back a few minutes later, no throughput. I tried for hours and gave up. This morning, all working ...
EDIT : Within the GUI, also tried resetting everything and rebooting, as I thought maybe something with a firewall