Extracting /var/log/syslog would be useful to understand what's going on there. A very quick search suggests this card might be supported by the tg3 module (drivers/net/ethernet/broadcom/tg3.c), which is definitely shipped in the installer. So maybe it's something that needs tweaking or fixing on the firmware side (e.g. “modprobe dance”), or a missing auxiliary bus (e.g. mhi) to make the card visible. Hard to tell without any logs.
Thanks Cyril. This system is running Debian 12, so there is no
/var/log/syslog. As I mentioned in the original report, I found
nothing apparently related in the Journal.
-- David Hillman