Tracking historical lease information

Chris Buxton chris.p.buxton at
Wed Jan 19 23:32:23 UTC 2011

Most commercial DDI solutions offer this. For example, on a BlueCat Adonis, there's a software component that watches the dhcpd.leases file and reports all new leases back to the BlueCat Proteus that controls it. All leases are stored in a database for easy retrieval, and you can look at the history of a given IP address to see who leased it and when.

However, it sounds like you don't have the ability to migrate to a new DHCP platform. In which case, perhaps you can use a similar technique when you roll your own, or perhaps you can find a DDI solution that doesn't require replacing the box (nor your existing DHCP installation on the box); I know there's at least one such out there.

Chris Buxton
BlueCat Networks

On Jan 19, 2011, at 3:05 PM, David Carlin wrote:

> I'm looking for a way to track historical lease information.  For
> example, I want to be able to query a specific IP and time stamp and
> be returned the MAC address which has a lease for that IP at that
> point in time.
> I've come across the following logging/tracking solutions searching
> the list archives:
> Gluff -
> FindHosts -
> DHCPStatus -
> -
> LanLord -
> DHCPStatus, and Lanlord seem to be geared toward
> reporting on the status of current leases.  Only FindHosts and Gluff
> appear to have facilities to support historical use.  Gluff seems the
> most promising, but I'm not in control of the DHCP servers to upgrade
> them to 4.1.0+.
> Anyone else have any other recommendations before I go the roll your own route?
> David
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