Duplicate IP records in DNS 1

[BobSchleicher]

My 2 DNS servers are Windows 2003 R2 SP2 and they replicate to each other just fine (adds and deletes).
I recently found 2 of the sames IPs pointing to 2 different workstation names.
Example:
192.168.0.50 workstation1
192.168.0.50 workstation2

Does anyone have an idea on how this happens and also how to I prevent this from happing in the future.

Thanks,

BobSchleicher

 

[lhuegele]

If your DNS scavenging happens on a time interval that is longer than the lease time on your DHCP server, you'll have old DNS records sticking around like you describe.

Make sure you set your DNS scavenging to happen on a shorter time frame than your DHCP lease time and that should fix the problem.

You could also not worry about it because when workstation1 comes back to your environment, it should get a new IP address, and report it's new IP address to DNS assuming you have that all set-up correctly.

Good luck,

 

[BobSchleicher]

Just as an FYI, the only reason I caught this is because we use an internet monitoring program here and the reports are showing users on the wrong workstation.

I will increase my scavenging to try to lessen this issue, thanks for the resolution.

BobSchleicher

 

[lhuegele]

You're welcome, I hope it's helpful!