docs: def create_ip_arp_reply(srchw, dsthw, srcip, targetip):
      '''
      Create an ARP reply (just change what needs to be changed
      from a request)
      '''
      pkt = create_ip_arp_request(srchw, srcip, targetip)
      pkt[0].dst = dsthw
      pkt[1].operation = ArpOperation.Reply
      pkt[1].targethwaddr = dsthw
      return pkt