"So, folks -- I'm fairly sure this is a software issue.
If you go to settings->network-><ethernet interface>->details->hardware and then change "Configure" to "manual", THEN change ANY setting (I turned off ABV/EAP mode), save/exit and then go in and change it back; the packet loss seems to stop. (I also tried changing duplex to 'flow control' and back again, just incase it helps anyone)
I'm guessing the auto configuration has gotten something wrong and persisted it somehow. Try it out!
Really glad it's helping some people. I'm bummed because it doesn't seem to be helping me, which makes me think there's some device on my network that isn't playing well with the mac mini.
https://forums.macrumors.com/threads/m2-pro-ethernet-issues....
"So, folks -- I'm fairly sure this is a software issue.
If you go to settings->network-><ethernet interface>->details->hardware and then change "Configure" to "manual", THEN change ANY setting (I turned off ABV/EAP mode), save/exit and then go in and change it back; the packet loss seems to stop. (I also tried changing duplex to 'flow control' and back again, just incase it helps anyone)
I'm guessing the auto configuration has gotten something wrong and persisted it somehow. Try it out!
66 packets transmitted, 66 packets received, 0.0% packet loss"