packet-generator new {
  name trafgen-1518
  limit 0
  node ethernet-input
  interface cx7-out
  size 1518-1518
  data {
    IP4: 00:de:ad:00:01:01 -> 00:de:ad:00:02:01
    UDP: 10.0.1.100 -> 10.0.2.100
    UDP: 4000 -> 4001
    incrementing 8
  }
}
