OpenBSD Startup problem

[John Draper <lists_(_at_)_webcrunchers_(_dot_)_com>]

Hi,

I'm having problems getting my openBSD system to startup with the
network working.

I get

route:  mybox bad value  when the box comes up,  and the ethernet
device looses it's IP address,  so I'm having to do...

ifconfig em0 <ip> <mask>  up  each time.

Where can I look at in the startup files where this error is?

John