OK, solved, I was trying to get an IP with a wrong interface. But I have 
another question: I can ping any IP on the network from domU, but any 
"machine", including dom0, ping domU.

What's wrong? Thank you.

Daniel Bolgheroni escreveu:
> Hi,
>
> I have an ADSL modem with internal DHCP server. Whatever machine I 
> connect to the hub (which, by the way, is where the modem is 
> connected), I can get an IP address.
>
> What I'm trying to do is to get a IP for a running netbsd-XENU domain. 
> I added
>
> dhclient=YES
>
> to /etc/rc.conf and NetBSD tries to get an IP, but no success at all. 
> I tried to put
>
> dhcp = "dhcp"
>
> in the configuration file of the domU too, but also without success.
>
> Am I missing something? Any tricks?
>
> Thank you.