MAC address recovery.

1. set your IP to 192.168.101.2 netmask 255.255.255.0
2. telnet 192.168.101.1 (user root pass root621)
3. setmac 1 32769 00:07:20:15:10:19 (mac from sticker)
4. setmac 1 256 00:07:20:15:10:19 (mac from sticker)
5. reboot
6. http://192.168.101.1 (user adminisp pass adminisp)
7. Administration -> System Management -> Restore Default