How to configure dhcp to listen to a specific interface instead of 0.0.0.0?

[sthaug at nethelp.no]

> > Even though netstat shows dhcpd has a socket open that is listening, but
> > it only processes dhcp requests on the named interface.
> 
> I've found that version 3.0.4-13+etch2 (debian) listens and steals traffic
> not intended for it on interfaces which it is configured to not use.
> 
> The system runs smokeping, largely on an external interface, and dhcpd on an 
> internal one. When dhcpd is processing a request it steals some of the 
> smokeping replies on the external interface.

I believe this is a Linux-specific problem. Never seen anything like it
on FreeBSD, where I run a decent sized DHCP failover configuration with
quite a bit of other stuff on the same servers.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no