In the BIOS for my EPYCD8 I only see that the BMC is set to Failover and there is no way to change that (it's greyed out and not configurable). Is this indended? I prefer to use dedicated for my IPMI interfaces and not failover.
Thank you for this. Sounds exactly like my problem because I've also seen funny behavior between my BMC NIC and eth0. I will give this a shot.I had a similar bug in my X470D4U which was due to a duplicate MAC being used on both the IPMI NIC and the NCSI NIC - ASRock shipped me a util called BMCMAC to fix it, at another user's request I uploaded it here a few days back. Perhaps worth a shot?
Else I suspect you'd need to open a ticket with their support bods.
Get eth00 Mac Address Fail
Get eth00 Mac Address Fail