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vSphere 6.0 and 6.5 : VMXNET3 and DIRECT PATH IO Issue

So here it is. Recently we were testing few options and noticed that Direct Path IO will be enabled even without us enabling it. 

You can notice this happening when you create a VM, import a VM or add a vmxnet3 in 6.0/6/5. 

For example, when you add a vmxnet3 NIC adapter for a VM, you will see "uptcompatiblity" parameter is set to True.

When you are creating a Virtual Machine with VMXNET3, everything looks fine.

Once the VM is created, its a Surprise. You will automatically have Direct Path I/O Enabled.

I have created a case with VMware on this. I will keep this post updated once I receive an update from VMware.

I would consider this to be a bug at this point of time.