$ curl --silent http://169.254.169.254/openstack/2017-02-22/network_data.json | python3 -m json.tool
{
    "services": [
        {
            "type": "dns",
            "address": "10.245.160.2"
        }
    ],
    "networks": [
        {
            "network_id": "dde23855-5cd8-4a08-a200-098679aa6a27",
            "link": "tap5cfc3216-16",
            "type": "ipv4_dhcp",
            "id": "network0"
        }
    ],
    "links": [
        {
            "ethernet_mac_address": "fa:16:3e:94:4c:aa",
            "mtu": 8958,
            "type": "ovs",
            "id": "tap5cfc3216-16",
            "vif_id": "5cfc3216-16d0-4fdf-8a42-f016d562a684"
        }
    ]
}