dynamic dns cleanup?

[Cuttler, Brian (HEALTH)]

This is a dhcpd/dynamic dns interaction question, but the question is I think really a dhcpd question.

I have a printer that was in "this" building, which uses dynamic dhcp to register DNS entries, this worked as expected, address assigned, Forward and Reverse records created. All good.

We have now moved the printer to one of our other building, which does NOT use dynamic DNS. The printer was assigned a new IP address (in the range assigned to that building, according to the helper addresses in the network router), that part is all good, worked as expected.

I was wondering about cleanup of the original DNS entries, the ones in the dynamic range in building #1. The entry looks like hri12028.esp122.wadsworth.org (printer tag/name, subnet/range, network name). Will that at some point go away on its own, or get over written?

Will it be removed when the dhcp entry for that zone expires, or when the IP is ultimately reassigned?
Or will I need to manually remote the DNS entry if I want to have it 'go-away'?

While I await your advice, I will lock down the new IP in the range for other building (I know, I shouldn't really have to, but...) and assign it DNS entries at the new address.

Note that the other building does not use subnet names, so there will be no conflict, other than the CNAME I created (tag CNAME tag.esp122.wadsworth.org) which greatly simplifies printer access from the user desktop.

I guess with my setup, once the second (through 5th) buildings to dynamic DNS I will only have to update the CNAME entries, unless I can figure out how to get rid of them.

Thank you,
Brian

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