when is a DHCP server supposed to remove A and PTR records?

Marc Haber mh+dhcp-users at zugschlus.de
Wed Jul 8 21:30:33 UTC 2015

On Wed, Jul 08, 2015 at 10:24:13PM +0200, Marc Haber wrote:
> On Wed, Jul 08, 2015 at 06:36:40PM +0100, Simon Hobson wrote:
> > > Under which circumstances is the server supposed to remove the DNS
> > > records? From the docks, I reckon that it should remove them when the
> > > lease expires. According to the logs of the DNS server, it doesn't,
> > > though.
> > 
> > It should remove them at the end of the lease.
> For some reason, it doesn't. Any idea how to debug this?

Additional information: I reconfigured the test VM to have a different
MAC address, but the same hostname. When that VM booted, the DHCP
server removed the A and PTR for the old IP address, assigned a new
one and correctly entered the A and PTR for the new IP address.

I have since then turned off the test VM, and intend to keep it off
until the lease expires.


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