Static IP and IP management

Bernard Fay bernard.fay at
Wed Feb 24 14:16:54 UTC 2016

I manage a lab where there is about 300-400 IPs assigned to different
network equipments, physical and virtual servers.  So IPs might be assigned
for a while then equipments removed because not needed anymore, remember
this is a lab.  I would like to know which IPs are in used or not.
Equipments removed means IPs not used anymore so we could reuse those IPs.

I hope I am clear enough

On Wed, Feb 24, 2016 at 9:06 AM, Patrick Trapp <ptrapp at> wrote:

> I believe a helpful answer will require some context. You haven't told us
> what issues you are having with IP management, so it's going to be
> difficult to identify how static IP's might be beneficial.
> Are you having a specific issue you wish to address?
> ------------------------------
> *From:* dhcp-users-bounces at [dhcp-users-bounces at]
> on behalf of Bernard Fay [bernard.fay at]
> *Sent:* Wednesday, February 24, 2016 7:39 AM
> *To:* Users of ISC DHCP
> *Subject:* Static IP and IP management
> Hello everyone,
> I have been told that static IP assignation can help in IP management.  Of
> course, I can know which IPs are assigned by looking in dhcpd.conf.  But
> after a while an IP might not be used anymore and nothing in dhcpd or bind
> will tell me if it still in use or not.  I have setup a lab to experiment
> where I have configured dhcpd and bind and I cannot find out how static IP
> can really help in IP management.
> Did I miss something somewhere?
> Thanks,
> B
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