neutron-lib/api-ref/source/v2/samples/conntrack_helpers/conntrack-helper-list-response.json

{
    "conntrack_helpers": [
        {
            "protocol": "udp",
            "id": "2fc1eebb-e0fa-4c40-868a-7ace444717e1",
            "helper": "tftp",
            "port": 6969
        },
        {
            "protocol": "tcp",
            "id": "ee7c890f-44fa-443d-9326-8574c1c3e5e1",
            "helper": "ftp",
            "port": 21
        }
    ]
}