Change network NIC speed and making it permanent in Linux Mint 14 64 bit

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http://www.linuxquestions.org – Dear LQ members I am running Linux Mint 14 64 bit on my system.Each time I set my NIC to 100mps Full Duplex using sudo ethtool -s eth0 speed 100 duplex full. It work but when I try to have it permanent in etc/network/interfaces with an add in command.My network NIC will not work after a restart. # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback pre-up /usr/sbin/ethtool -s eth0 speed 100 duplex full (This is add in command to have it permanent) After a restart,my network NIC will be down and after deleting the command and restart the pc, the network will be up (HowTos)