Enabling Wake-on-LAN

The first thing you do when you configure Wake-on-LAN is to enable it in your motherboard BIOS (on my ASRock it's "wake on PCI device -> enabled").

However, this is not enough because when you leave Linux (or Windows), your network card may not be set to wake up from LAN. Thanks to tjansson, I'm now using the following root crontab to enable Wake-on-LAN everytime Linux starts (I prefer that to an init/rc6 script).

@reboot /usr/sbin/ethtool -s eth0 wol g

I invite you to read tjansson's blog entry for more information.