| ??? 07/16/09 09:04 Read: times Msg Score: +1 +1 Good Answer/Helpful |
#167398 - Careful about assumptions Responding to: ???'s previous message |
I don't think there are any safe address ranges.
Even if you could prove that a company got an address series and then shut down the operation before starting to produce, someone else may already have tried to reuse this range. I have already seen cheap trash using stolen MAC addresses, and it isn't so fun to walk around and try to locate an impossible collision if it happens in a network without supervised switches where you can ask the switch which port the address was seen on. Even then, it can be problematic, depending on the algorithms in the switch. I would never trust a manufacturer who have supplied me with bad MAC addresses - even if they promises that the first time was just a "demo run". |
| Topic | Author | Date |
| MAC address | 01/01/70 00:00 | |
| Buy 100 scrap ethernet cards? | 01/01/70 00:00 | |
| Bad News | 01/01/70 00:00 | |
| A hobbyist can always reuse a MAC from a NIC he owns | 01/01/70 00:00 | |
| IANA list | 01/01/70 00:00 | |
| Not a safe assumption at all! | 01/01/70 00:00 | |
| Careful about assumptions | 01/01/70 00:00 | |
| Reason for "Answer is wrong" | 01/01/70 00:00 | |
Microchip sell MAC addresses in EEPROMs\ | 01/01/70 00:00 | |
| Maxim | 01/01/70 00:00 |