vim /etc/rc.local
#change the server‘s MAC address("00:50:56:84:5C:76" change to 00:50:56:84:5D:77)
/sbin/ifconfig eth0 down
/sbin/ifconfig eth0 hw ether 00:50:56:84:5D:77
/sbin/ifconfig eth0 up
service network restart
原文：http://www.cnblogs.com/lmgsanm/p/5441346.html