src/scripts/vnet/arp4-mpls

packet-generator new {
  name x
  limit 1
  node ip4-input
  size 64-64
  data {
    ICMP: 1.0.0.2 -> 2.2.2.2
    ICMP echo_request
    incrementing 100
  }
}

loop create
loop create
set int state loop0 up
set int state loop1 up

set int ip address loop0 1.0.0.1/24
set int ip address loop1 2.0.0.1/24

ip route add 2.2.2.2/32 via 2.0.0.2 loop1 out-label 33

trace add pg-input 100