{
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    "name" : "vxlan",
    "layout" : [
        {
            "name" : "reserved",
            "size" : "4"
        },
        {
            "name" : "i",
            "size" : "1"
        },
        {
            "name" : "reserved",
            "size" : "11"
        },
        {
            "name" : "vni",
            "size" : "24"
        },
        {
            "name" : "reserved",
            "size" : "8"
        }
    ],
    "attributes" : [
        {
            "name" : "udpport",
            "size" : "16",
            "default" : "4789"
        }
    ]
}