This reminds me that we used to use these network power switches: http://dataprobe.com/iboot.html http://dataprobe.com/iboot.html The problem with them is that

This reminds me that we used to use these network power switches: http://dataprobe.com/iboot.html http://dataprobe.com/iboot.html The problem with them is that they use just an 8051 microcontroller (talking to an ethernet controller over a parallel port)! Arp and other broadcast background traffic on modern networks overwhelms them.