This RTL-8153 USB-C wired network interface has ruined me
Channel: Kai Hendry
Date: 2021-08-27

Belkin's USB-C to Ethernet Adapter Model: F2CU040 doesn't even bloody have TX/RX lights!! https://www.apple.com/sg/shop/product/HJKF2ZM/A/belkin-usb-c-to-gigabit-ethernet-adapter
Also see https://community.ui.com/questions/All-switches-and-access-points-disconnect-from-UDMP-randomly/f0586402-eb34-4582-88c7-5e0ee135c3c3

USB Ethernet adapters randomly stop working on M1 MacBook Pro and macOS Big Sur https://discussions.apple.com/thread/252387604

My Smokeping sites:
1. Wired https://smokeping.dabase.com/
2. Wireless https://smokeping2.dabase.com/