Hopefully a simple question with a simple answer.
I thought each NIC had a single MAC address. However, as can be seen from the IPTraf output below, I have multiple MAC addresses for both my eth0 and wlan0 interfaces.
Why do I have multiple MAC addresses?
+----------- PktsIn --------------------- IP In ------------- BytesIn ----------------- InRate ------------ PktsOut ------------------- IP Out ------------- BytesOut ------------- OutRate ----------------+
| Ethernet HW addr: 0021cccbeed0 on eth0 |
| + 3094 0 1355136 2.0 3286 0 894518 5.4 |
| Ethernet HW addr: 1cbdb98d4053 on eth0 |
| + 3227 0 888314 5.4 3111 0 1359575 2.0 |
| Ethernet HW addr: ffffffffffff on eth0 |
| + 170 0 21922 0.0 0 0 0 0.0 |
| Ethernet HW addr: 74e5439d621b on wlan0 |
| + 6 0 312 0.0 104 0 15380 0.0 |
| Ethernet HW addr: 01005e000001 on eth0 |
| + 10 0 460 0.0 0 0 0 0.0 |
| Ethernet HW addr: 01005e00000c on wlan0 |
| + 4 0 184 0.0 0 0 0 0.0 |
| Ethernet HW addr: 00042022bc60 on eth0 |
| + 0 0 0 0.0 24 0 1440 0.0 |
| Ethernet HW addr: 01005e0000fb on eth0 |
| + 33 0 6928 0.0 0 0 0 0.0 |
| Ethernet HW addr: 6c626db33eea on eth0 |
| + 22 0 1844 0.0 53 0 11781 0.0 |
| Ethernet HW addr: 885395dbb6b1 on eth0 |
| + 0 0 0 0.0 25 0 7058 0.0 |
| Ethernet HW addr: 01005e000002 on wlan0 |
| + 1 0 32 0.0 0 0 0 0.0 |
| Ethernet HW addr: 01005e7ffffa on wlan0 |
| + 36 0 14620 0.0 0 0 0 0.0 |
