mac = 'aa:bb:cc:dd:ee:ff'
b = mac_pton(mac)
mac2 = mac_ntop(b)
self.assertEqual(type(mac), type(mac2))
self.assertEqual(mac2, mac)
mac = 'aa:bb:cc:dd:ee:ff'
b = mac_pton(mac)
mac2 = mac_ntop(b)
self.assertEqual(type(mac), type(mac2))
self.assertEqual(mac2, mac)