Cisco IOS 11.1CC through 12.2 with Cisco Express Forwarding (CEF) enabled includes portions of previous packets in the padding of a MAC level packet when the MAC packets length is less than the IP level packet length.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ios | Cisco | 11.1cc (including) | 11.1cc (including) |
| Ios | Cisco | 12.0 (including) | 12.0 (including) |
| Ios | Cisco | 12.0s (including) | 12.0s (including) |
| Ios | Cisco | 12.0st (including) | 12.0st (including) |
| Ios | Cisco | 12.0t (including) | 12.0t (including) |
| Ios | Cisco | 12.1 (including) | 12.1 (including) |
| Ios | Cisco | 12.1e (including) | 12.1e (including) |
| Ios | Cisco | 12.1t (including) | 12.1t (including) |
| Ios | Cisco | 12.2 (including) | 12.2 (including) |
| Ios | Cisco | 12.2t (including) | 12.2t (including) |