+1 for this issue.
RED : “usb: ASIX Electronics Corp. AX88179 Gigabit Ethernet”
I am lucky to get 10 mins before DNS just dies and I have to restart networking to get it working again, reverting to 169.
Edit: Workaround by stealing a USB dongle from a Mac with a Realtek chipset in it, so didn’t roll back in the end.