ec.py

from scapy.all import *
def reply(packet):
    
    if(packet[2].type == 8):
        src = packet[1].src
        dst = packet[1].dst
        id = packet[2].id
        load = packet[3].load
        seq = packet[2].seq
        ip = IP(src=dst, dst=src)
        icmp = ICMP(type=0, id=id, seq=seq)
        reply = ip/icmp/load
        send(reply)
        
if __name__="__main__":
    sniff(iface="eth22", prn=reply, filter="icmp")