Change the speed and duplex settings of an Ethernet card by admin | Dec 20, 2010 | Debian, Linux, Networking# apt-get install ethtool net-tools # ethtool eth0 or # mii-tool eth0 add a pre-up line to /etc/network/interfaces. Something like this: iface eth0 inet static pre-up /usr/sbin/ethtool -s eth0 speed 1000 duplex full autoneg off address … OR Debian init script: #...