+.. note::
+
+ In case of whitelist sub-device probed by EAL, fail-safe PMD will take the device
+ as is, which means that EAL device options are taken in this case.
+ When trying to use a PCI device automatically probed in blacklist mode,
+ the syntax for the fail-safe must be with the full PCI id:
+ Domain:Bus:Device.Function. See the usage example section.
+