rtl8168-mac-eeprom utility Usage: ./rtl8168_mac_eeprom will generate an EEPROM backup file for all supported cards ./rtl8168_mac_eeprom -s 1:0 will generate an EEPROM backup file for PCI slot 1:0 ./rtl8168_mac_eeprom -s 1:0 -m 01:02:03:04:05:06 will set the new mac address 01:02:03:04:05:06 to PCI slot 1:0