def change_payload(packet, load):
    packet[Raw].load = load
    del packet[IP].len
    del packet[IP].chksum
    del packet[TCP].chksum
    return packet.__bytes__()
def change_payload(packet, load):
    packet[Raw].load = load
    del packet[IP].len
    del packet[IP].chksum
    del packet[TCP].chksum
    return packet.__bytes__()