Modify the MAC address method under Linux: 1, / sbin / ifconfig eth0 Down 2, / sbin / ifconfig eth0 HW Ether 00: AA: BB: CC: DD: EE 3, / SBIN / IFCONFIG ETH0 UP upper edge instruction You can modify the MAC address of the NIC, but modify the failure after restarting, the solution is as follows: Add three instructions to the /etc/local.rc to start the configuration file.