import time
import random
a = ['A','B','C','D','E','F','0','1','2','3','4','5','6','7','8','9']
def random_mac_pairs():
    mac = []

    while len(mac) < 17:
        mac.append(random.choice(a))
        mac.append(random.choice(a))
        mac.append(':')
    spoof_mac = ''.join(mac)
    spoof_mac = spoof_mac[:-1]
    print(spoof_mac)

random_mac_pairs()