You can find the MAC address for LAN1/eth0 (*not* the BMC MAC) via the SuperMicro IPMI interface by running the following command:
``` bash
$ ipmitool -U $IPMI_USER -P $IPMI_PASS -H $IPMI_HOST raw 0x30 0x21 | tail -c 18
```
The eth0 MAC address will be output in this format:
```
00 25 90 f0 be ef
```