I believe anyone have this problem when some device hung and only solution is to restart it. This is my how to make this restarting automated.
A friend of mine build me this device to control some of my devices – AP and two adsl modems.
He writhed the script for OpenBSD / he is obsessed by this OS /and build this small and simple relay board.
“Just change script that test conditions and you can control almost everything that use power.Switch, Modems, Wireless AP, computers and of course the coffee machine :)”
More info on his site www.koychev.com
And for more useful explanations for the board and script on this post : http://www.koychev.com/Parallel-port-relay-control-for-OpenBSD