My traceroute program in python using scapy.

tracerout.py

#!/bin/usr/env python2

from scapy.all import *
from argparse import ArgumentParser
from sys import argv
from time import time

# shut up scapy
conf.verb=0

def trace(ttl, max_ttl, dst, payload, try_count=0):

    if ttl > max_ttl : return
    
    p = IP(ttl=ttl, dst=dst)
    st = time()
    r = sr1(p/ICMP()/payload, timeout=1)
    et = time()

    print("{0:<4} : {1:<18} : {2}ms".format(
        str(ttl), 
        r.src if r else "No Reply", 
        int((et-st)*1000))
    )

    if r and r.src == dst:
        return True;
    elif not r and try_count < 2:
        return trace(ttl, max_ttl, dst, payload, try_count+1)

    return trace(ttl+1, max_ttl, dst, payload);

def tracepath(ttl, max_ttl, dst, payload):
    print("\nTracing route to {} over a maximum of {} hops...\n".format(dst, max_ttl));

    print("{0:<4} : {1:<18} : {2}".format("#","HOST","TIME"))
    st = time()
    success = trace(ttl, ttl+max_ttl-1, dst, payload)
    et = time()
    if success:
        print("\nFound {} in {}ms. Trace complete".format(dst, int((et-st)*1000)))
    else:
        print("\nCould not trace {} in {} hops. Failed in {}ms.".format(dst, max_ttl, int((et-st)*1000)))

if __name__ == "__main__":
    p = ArgumentParser();
    p.add_argument('HOST', help="The ip address of the target")
    p.add_argument('-p', type=str, default="ABCDEFG", help="The data to send in the IMCP packet.")
    p.add_argument('-t', type=int, default=1, help="Start with this hop. (default: 1)")
    p.add_argument('-m', type=int, default=1500, help="Maximum count of hops (default: 1500)")

    arg = p.parse_args(argv[1:])

    tracepath(arg.t, arg.m, arg.HOST, arg.p)