ISC Dhcpd 4.2.3-P2 does not respond to unicast

[sthaug at nethelp.no]

> I have ISC DHCP 4.2.3-P2 server. I am seeing that the server is not
> responding to unicast Discover.

Are you using a relay agent or not?

I would the server to respond to unicast Discover via a relay agent.
I would not necessarily expect the server to respond to a unicast 
Discover which is *not* sent via a relay agent. After all, RFC 2131
is quite clear in stating (section 3.1):

  1. The client broadcasts a DHCPDISCOVER message on its local
     physical subnet.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no