This seems to be a common dhcpd problem:
http://groups.google.ch/groups?selm=BAY2-F127u2hRM1YBTU00006e97%40hotmail.com.lucky.openbsd.misc&rnum=1
http://groups.google.ch/groups?selm=39BFCE95.57EC551E%40august.net&rnum=2

When I do a "ls -al /dev/bpf*" on exec.php there are only 16 bpf devices!

Can I create more devices at every mono boot with the following command?
# Create a Berkeley Packet Filter
mkdev bpf 0
mknod /dev/bpf0 c 20 0

(I can't seem to find these commands in the filesystem)
I'd be really glad if a bsd/linux specialist could help us out here.

Kasper Pedersen wrote:
> ----- Original Message ----- From: "Tenchi" <tenchi at intergga dot ch>
>> server I get the following log entry: "dhcpd: Can't find free bpf: No 
>> such file or directory". The ugly thing is that when this happens none 
> 
> Curiously, in my case it seems that if I enable dhcp on an interface 
> that is
> just numbered beyond the fifteenth, nothing works