Direct from the mouth of Marc Duponcheel:
> 
> Hello NetDSD-ers
> 
> I am trying to boot an NCD from my Amiga
> 
> Therefore I need a working rarpd
> 
> This is what rarpd gives
> 
> root@offline ~ $ rarpd -a
> root@offline ~ $ grep rarp /var/log/messages
> Oct 12 16:46:08 offline rarpd[491]: /dev/bpf0: Device not configured
> 
> Does this mean that
> 
> 1) rarp is not compiled into the kernel
> 2) I have to manually 'configure /dev/bpf0'

And the answer is: Number 1. bpfilter is not configured into the kernel.
Read the man page for bpf. It should explain more about this.

Ron