1#!/usr/local/bin/python3 2 3print("send icmp with router alert") 4 5import os 6import sys 7from struct import pack 8from addr import * 9from scapy.all import * 10 11if len(sys.argv) != 2: 12 print("usage: icmp_ra.py Nn") 13 exit(2) 14 15N=sys.argv[1] 16IF=eval("IF_"+N); 17ADDR=eval("ADDR_"+N); 18 19pid=os.getpid() 20eid=pid & 0xffff 21payload=b"ABCDEFGHIJKLMNOP" 22packet=IP(src=ADDR, dst=ADDR, options=b"\001\224\004\000\000\001\000\001")/ \ 23 ICMP(type=6, id=eid)/payload 24 25# send() does not work for some reason, add the bpf loopback layer manually 26bpf=pack('!I', 2) + bytes(packet) 27sendp(bpf, iface=IF) 28