Running new dhcpd instance on same physical interface

[sthaug at nethelp.no]

> Provided all of the server activity is IP unicast, there is a (seldom
> used, often broken, and poorly documented) way to build the DHCP
> server to "USE_SOCKETS" (#define in includes/site.h).  With this build
> method, the server can not be guaranteed to be RFC 2131 compliant in
> messages it can receive or transmit (raw sockets work around that for
> us).

It would be nice if USE_SOCKETS or a similar mechanism could become
"first class citizens" - then those of us with clients exclusively 
behind relay agents could drop all broadcast handling etc.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no