{
    "type" : "node",
    "name" : "udp",
    "layout" : [
        {
            "name" : "src",
            "size" : "16"
        },
        {
            "name" : "dst",
            "size" : "16"
        },
        {
            "name" : "length",
            "size" : "16",
            "default" : "8",
            "autoincrease" : "true"
        },
        {
            "name" : "checksum",
            "size" : "16"
        }
    ]
}