Upgrade both vCenter and ESXi to version 8.0U1
Workaround:
If an upgrade is not possible then navigate to vSAN Skyline Health and go to "Hosts with duplicate IP issues" to check for duplicate IP info. In the column Duplicate IP if the IP address is for the BMC NICs, for example, "169.254.1.2" or "16.1.15.2" then this can be safely ignored and you can silence the alert.