Hi, we have recently turned on Dynanic Updates in our environment and
also updates via DHCP (always dynamically update DNS A and PTR
records).

As I built a 2003 server (client) it used DHCP and was added to DNS via
DHCP as it was not enable to do it itself (DisableDynamicUpdate was set
to 1). I since gave it a fixed IP, set the DisableDynamicUpdate to 0
and rebooted. I then ran ipconfig /registerdns and everything looked
good.
The problem I am having is that every hour or so the old IP address
finds it's way into DNS. I looked at the DHCP logs and can see attempts
being made but all are unsuccessful. See typical entry in logs:

31,06/05/06,11:59:55,DNS Update
Failed,10.5.5.5,server.test.domain.com,-1,

Is there an additional step I need to carry out?
Sure I could delete the lease in DHCP but don't want to have to keep
doing this for every host.
Assuming it is DHCP causing this update, what is the correct process
for switching from DHCP to static?
How can I tell if the DNS update came from DHCP?

thanks,
Sheldon

In news:(E-Mail Removed),
(E-Mail Removed) <(E-Mail Removed)> stated, which I
commented on below:
> Hi, we have recently turned on Dynanic Updates in our environment and
> also updates via DHCP (always dynamically update DNS A and PTR
> records).
>
> As I built a 2003 server (client) it used DHCP and was added to DNS
> via DHCP as it was not enable to do it itself (DisableDynamicUpdate
> was set to 1). I since gave it a fixed IP, set the
> DisableDynamicUpdate to 0 and rebooted. I then ran ipconfig
> /registerdns and everything looked good.
> The problem I am having is that every hour or so the old IP address
> finds it's way into DNS. I looked at the DHCP logs and can see
> attempts being made but all are unsuccessful. See typical entry in
> logs:
>
> 31,06/05/06,11:59:55,DNS Update
> Failed,10.5.5.5,server.test.domain.com,-1,
>
> Is there an additional step I need to carry out?
> Sure I could delete the lease in DHCP but don't want to have to keep
> doing this for every host.
> Assuming it is DHCP causing this update, what is the correct process
> for switching from DHCP to static?
> How can I tell if the DNS update came from DHCP?
>
> thanks,
> Sheldon

Are you using WINS? If so, check the database for that record.

Other than that, you can try the suggestions in this article concerning a
DHCP server running on a DC. Read the part about DHCP and how the owner of
the record is affected and how the DNSUpdateProxy group can be used to fix
this.

317590 - HOW TO Configure DNS Dynamic Update IN Windows 2000 (and the
DNSUpdateProxy Group):
http://support.microsoft.com/?id=317590

816592 - How to configure DNS dynamic updates in Windows Server 2003 (and
the DNSUpdateProxy Group):
http://support.microsoft.com/kb/816592/

--
Ace

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It's easy:
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Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Directory Services
Microsoft Certified Trainer

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