Installing latest patch solved the issue for me.
Now running build 3247720
After spending quite at time found it is know issue. Solution is to upgrade ESXi 6.0 u2 or 5.5 patch . Please see below KB .
This issue is resolved in:
ESXi 6.0 Update 2, available at VMware Downloads. For more information, see the VMware ESXi 6.0 Update 2 Release Notes.
ESXi 5.5 patch ESXi550-201602001. For more information, see VMware ESXi 5.5, Patch Release ESXi550-201602001 (2144353).
To work around this issue if you are unable to upgrade, power off the virtual machine and power it on.