[c-nsp] DHCP Server Authoritative

[Collins, Richard (SNL US)]

Hi,

Can one set up the dhcp server to be 'authoritative'?  So far I have
standard settings on our 3845.

As a reference:

 
>From the ISC

Is your DHCP Server Authoritative?
Possibly the single most annoying misconfiguration of the ISC DHCP
Server today is forgetting to set the 'authoritative;' directive, when
doing so is appropriate.

When a DHCP server believes that a client is requesting an address that
is not appropriate for the subnet to which it is attached, for example
because a user's laptop received a lease from their home network the
night prior, the server is expected to send a DHCPNAK in response to the
client's DHCPREQUEST. This causes the client to immediately fall back to
INIT state, forget its old lease, and start over from scratch as though
it never had one. Out of the box, on a default configuration, ISC DHCP
does not do this, and you are expected to configure 'authoritative;' on
a line somewhere in your dhcpd.conf if you want this behaviour.