LAN/NIC problem

[MarkHaysHarris777]

Thanks tkaiser,  that is precisely where I took the PHY_VDD33 measurement with my board in GbE mode (big RED arrow in your pic) with no hackyfix, nor ethtool work-around,  connection up  1000 /full  in GbE mode with a perfectly clean VDD33 line.

My board was powered via euler bus, pin(4 5v+) pin(6 ground) with heavy pi passive low-pass filtering on the supply line... all boards in my lab are powered this way.

Again, battery operation improves the iperf3 test speeds on the boards that work...  but on the board that does not work (GbE mode) the battery operation does not help, and the VDD33 line is clean.