Static IP and IP management

[Bernard Fay]

Thanks Simon, I definitely have to delve deeper in this subject.


On Wed, Feb 24, 2016 at 2:15 PM, Simon Hobson <dhcp1 at thehobsons.co.uk>
wrote:

> Chuck Anderson <cra at WPI.EDU> wrote:
>
> > You can do that, but you have to use "reserved" leases rather than
> > fixed-address statements.  ISC dhcpd doesn't track the expiry of
> > fixed-address leases.
>
> To expand on that ...
>
> When you use a fixed-address statement to assign an address, no actual
> lease is created. Since it's a fixed address, there's no real need for it -
> so the server takes a shortcut, replies to the client, but doesn't actually
> store anything. So the only DNS update possible is when the "lease" is
> given out.
>
> A relatively new feature is a "reserved" lease. It acts the same as an
> ordinary lease - including normal expiry and DNS updates/removals - with
> the one difference of being tied to a single client.
> To use this feature, you need to either modify an existing lease (add the
> "reserved" statement), or you should be able to create a skeleton lease
> (including reserved statement) in advance of the client connecting.
>
> In either case, you probably need to be learning OMAPI to interact with
> the server !
>
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