I understand that the 'Hosts large ping test' identifies whether MTU mismatch exists in the network path. However, this is only an issue when a 9000 byte packet is sent. Anything less than that is not an issue.
To me it seems that a client application would have to ignore/override the network interface's MTU setting and fragment the packet at transmission for this have a real-world impact. Perhaps this is possible - in which case; Is this something that the vSAN witness server will encounter and, if so, why?
What is the relevance of the test sending confirming MTU mismatch with packets exceeding the MTU of the end-point's interfaces?