Dynamic Updates : filter hostnames

[Stefan Puiu]

Kevin is right - it's the responsability of the DHCP server to send DDNS
updates deleting a name from the DNS whenever the lease associated with it
expires. I should know, I did maintenance for a DHCP server, and it was
always supposed to do this - otherwise it was a bug. If you're seeing this
behaviour, file a bug report with the DHCP server vendor :).

On 13 Oct 2005 00:58:28 -0700, kriskaido at gmail.com <kriskaido at gmail.com>
wrote:
>
> Hi Gregory, thanks for your reply.
> The problem here is that I can't control the process in which the
> updates are done. All I have is control on my BIND installation.
>
> I think you didn't understood me well. I was not talking about
> duplicate IP addresses, and I can confirm there's no duplicate IP
> address in my context here, all I said was when you have a PC which
> boots and receives an IP address dynamically through DHCP, this address
> may have been registered by another PC (which is of course down now,
> otherwise the lease wouldn't be free) 2 days ago, so the IP is free,
> BUT the name of that 2-days-old PC is still in the DNS ! That's my
> problem, I'd like to force the update of the single name there is for
> each IP, as I'm sure that if that PC wants to update the DNS for that
> IP, it means that the current entry in the zone file is deprecated and
> can be replaced by the new one (which may be the same, why not ...)
>
> In short, I know it's legal to have aliases in DNS, but is it possible
> to change that behaviour and control what and how the updates are done
> in this or that zone ?
>
> Kris.
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