I have been dealing with this issue for about 3 months now. Its a Supermicro 6028U-TR4T+ server. For some reason I keep getting the exact same kernel panic roughly once every three days.

• When the system goes down I lose connection to it instantly so I am unable to run the unraid diagnostics on it.
• Sometimes when it crashes it takes my whole network down with it, like its flooding the network with garbage traffic. But when I console into the router everything seems normal. 
• I verified that the unraid server was causing the issue by unplugging the nic after it caused the network to freeze and instantly everything comes back.
• I have tried a different router just to make sure it wasnt some issue with that but the issue remained
  • I also tried a new 1GB intel nic instead of the 10gb nic that came with it.
• I have ran a memory tests and no errors where found.
• I have updated the BIOS and IPMI firmware.
• The crashes do not happen at a certain time. It occurs randomly within a 3 day time period from when it was last booted.

 

I have a screenshot of the kernel panic attached and I got a diagnostics file just in case anyone wanted one.

 

This error is always the same on each crash:

 

RIP: 0010:nf_nat_setup_info 

Kernel panic - not synching: Fatal exception in interrupt

Kernel Offset: disabled

 

 

Any help would be appreciated!

Thanks

 

supermicro-2u-diagnostics-20210514-1943.zip

See if this applies to you:

https://forums.unraid.net/topic/70529-650-call-traces-when-assigning-ip-address-to-docker-containers/

See also here:

https://forums.unraid.net/bug-reports/stable-releases/690691-kernel-panic-due-to-netfilter-nf_nat_setup_info-docker-static-ip-macvlan-r1356/