for ex: {
"resource_type": "VirtualNetworkInterface",
"device_key": "4000",
"device_name": "Network adapter 1",
"ip_address_info": [],
"vm_local_id_on_host": "1",
"mac_address": "#:#:#:#:#:#",
"owner_vm_id": "########-####-####-####-#########",
"external_id": "########-####-####-####-#########-4000",
"host_id": "########-####-####-####-#########",
"_last_sync_time": 1521018116780
}
Virtual machine tools is not installed in the virtual machine.
OR
Virtual machine tools installed in that machine is not supported by the ESXi.
Install/upgrade the virtual machine tool of the virtual machine to supported version.