Upgrade from 3.1.0 to 4.1.1

[sthaug at nethelp.no]

> >this is for shared network for the same DHCP instance. i'm trying from
> >another DHCP
> 
> You cannot have two instances of a DHCP server on the same physical 
> interface. Since the DCHP service uses broadcasts with no destination 
> IP address, there is absolutely no way to differentiate which 
> instance any inbound packet should go to.
> 
> That means you'll need a second NIC for the second DHCP instance.

Agreed. *Unless* he can do without the regular DHCP server handling
of broadcasts (e.g. if all requests are sent via a relay agent), in
which case it is possible to run several DHCP server instances using
USE_SOCKETS and the local-address parameter.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no