How to fix a broken MAC address (for Legacy firmware)?
If you’re not sure whether your NAS is running HAL or Legacy firmware, please follow this guide to find out first.
Please use the following commands to repair the MAC address (replace the MAC address with the one written on the sticker behind your NAS).
If your NAS only has a single LAN interface:
# set_mac 00:08:9b:12:34:56
If your NAS is with dual LAN interface (eth0 is LAN port 1, eth1 is LAN port 2):
# iface_set_mac eth0 00:08:9b:12:34:56
# iface_set_mac eth1 00:08:9b:12:34:57