curl -i -X POST 'http://localhost:3080/v2/compute/projects/a1e920ca-338a-4e9f-b363-aa607b09dd80/qemu/nodes/20362237-021f-45d1-84de-a2bf4c20a9d7/adapters/1/ports/0/nio' -d '{"ethernet_device": "eth0", "type": "nio_ethernet"}'

POST /v2/compute/projects/a1e920ca-338a-4e9f-b363-aa607b09dd80/qemu/nodes/20362237-021f-45d1-84de-a2bf4c20a9d7/adapters/1/ports/0/nio HTTP/1.1
{
    "ethernet_device": "eth0",
    "type": "nio_ethernet"
}


HTTP/1.1 409
Content-Length: 81
Content-Type: application/json
Date: Tue, 27 Sep 2016 10:01:12 GMT
Server: Python/3.5 GNS3/2.0.0dev1
X-Route: /v2/compute/projects/{project_id}/qemu/nodes/{node_id}/adapters/{adapter_number:\d+}/ports/{port_number:\d+}/nio

{
    "message": "NIO of type nio_ethernet is not supported",
    "status": 409
}