I came home and discovered that my TV had an ethernet connection working. I did not do anything. My assumption is, maybe there are some ethernet autonegotiation issues with my TV.

@Joseph-TP Hi I have a smart-TV i always use wired ethernet connection. it worked fine, then Tether mobile app suggested to update a firmware. I updated it, after that smart-TV lost ethernet...

LAN-ports stopped working after firmware upgrade to 1.1.0 Build 20240323 rel.70541(4555). Restart and Power on/off did not help. Only wireless is working now.