I have a new M1 Mac Mini running the latest version of macOS Monterey.

I've connected it via Ethernet to a switch, using the native onboard Mac Mini Ethernet port. But the ethernet connection cuts out and drops connectivity every 20-30 seconds. The Wi-Fi connection does not have this problem.

If I leave `System Preferences > Network` open in the background, I see the Ethernet connection constantly dropping and reordering itself under Wi-Fi. After a few seconds, the Ethernet connection reconnects and again moves to the top of the list.

[![Ethernet losing connection on M1 Mac Mini][1]][1]

 > Ethernet Connected  
 > Ethernet Not Connected  

What is wrong with this Ethernet connection? Why is it dropping? How can I fix this issue and hopefully turn off Wi-Fi on this Mac?

Console app shows some potential logging related to this, although I'm not sure what I should be looking for:
 
 > kernel | AppleBCM5701Ethernet [en0]: Link down (womp disabled, proxy idle)  
 > 
 > Springboard | -[NWSystemPathMonitor updateFlags] Wi-Fi primary: false->true, Ethernet primary: true->false, VPN active: false->false  
 > 
 > UserEventAgent | Ethernet signature changed

  [1]: https://i.sstatic.net/0BY8x.gif