Playback errors/track skipping on Bluesound Soundbar+ Roon-ready zone (Airplay zone on same device works fine)

[mjw (Here I am with a brain the size of a planet and they ask me to pick up a piece of paper. Call that job satisfaction? I don't.)]

Why would Roon OS have a docker0 network interface?

Roon Nucleus unable to obtain IP address from router (ref#EBNIF7)

Hello, here are three more pictures, hoping they help further troubleshoot my problem. 1) bios screenshot, I think the log says the CMOS battery died. 2) ifconfig output, showing eth1 (the usb ethernet adapter working and providing the MAC adress. 3) Wireshark output from the same netowrk listening for traffic from the MAC address of the ethernet adapter.. it only shows IPV6 traffic, why? thank.s [IMG_2325] [IMG_2330] [IMG_BBC8A810-5623-492B-BC0D-066A3AB9A8EF]