Xavier NX, custom bosrd. Network card extended from PCIE, can not get ip address even in static IP mode

Hi,

1: In fact, the work I did was described at the beginning 2, 3 and 4 part.

Yes, but we want to check the patch/code directly but not just description. Is there any other change than dts change in pcie?

I also wonder why do you hit this error.

[ 94.976759] r8168 0004:01:00.0 (unnamed net_device) (uninitialized): bad mac address at /chosen/nvidia,ethernet-mac: missing.

This node should be prepared by cboot. Could you share the directory list of /proc/device-tree/chosen?