Quote from: pfry on March 10, 2025, 03:21:39 PMI'd expect overheating to be more likely in the switch, unless it's a big Netgear with aggressive fans. The native twisted-pair cards should be fine, too, unless everything's cooking... which, given the power draw of all of those cards, is a slight possibility (the transceiver silicon can take some heat). Some of them may export thermal sensor data (via ACPI), but the system BIOS may not have support and/or it might be tough to read in FreeBSD.
I'd look at the OPNsense logs, as I'd tend to suspect a higher-level/layer issue.
The logs show kernel level 'interface down' messages, and then all the expected things due to that. Very little help there, but that leads me to suspect it's not a higher level issue.
I guess I might need to try some other hardware.