How do I add an entry to DNS Interfaces (to restore an inadvertantly deleted one?)

Posted on 2013-06-10
Last Modified: 2013-06-11
Server 2008 R2

I just took some DCs offline, and was making some DNS changes to reflect the new configuration.  In the process, I inadvertently removed the entry that was my server's MAC address coupled with its IP address from the Server Properties>>Interfaces tab.  

How do I get the MAC address entry put back in?  (Do I absolutely need it?)

NOTE:  I have to leave for the day, but will be back tomorrow to check on responses.
Question by:srsdtech
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3

Expert Comment

ID: 39235986
The DNS server properties - Interfaces tab only shows what IP addresses the DNS server will listen on for DNS queries.

You seem to be referring to an ARP table entry, which wouldn't be found in DNS. ARP maps an IP address to a MAC address. or are you thinking you deleted a name record from the forward lookup zones

Expert Comment

ID: 39235998
Are you able to put a Screenshot. Not sure which tab you are referring to. DNS is usually just Name -> IP not MAC -> IP.

 DHCP usually is the MAC -> IP

Author Comment

ID: 39239161

I tried to post a screenshot.  I'll just submit and see what this looks like.
Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.


Expert Comment

ID: 39239179
Yes, so that is simply the list of your IP addresses on which the DNS server will actually listen to DNS requests on. If your server only has that single IP (, then that is all you need in the Interfaces tab.

I don't think that is the location where you actually deleted a record. you may need to backtrack a few screens and see if you can locate the screen where you may have deleted a record.

Go to the Forward Lookup zones, then click in your domain name zone. Do you have a "Name Server (NS)" type record for that new server? you should also have a regular Host (A) record for your DNS server, of timestamp static. basically a static DNS entry for that server. your DNS servers should not dynamically register it's IP address. You can manually create the A record by right clicking, choosing "New Host (A or AAAA)", and put in the server name and IP address

Author Comment

ID: 39239248
I snapped this from an Oz Casey Dedeal video.   I used to have an entry that was very similar to the second entry, but with my i.p. address.

Actually, now that I look closer at this one, it looks like that is not a MAC address in the front but the port numbers.

Question: how do I get it back?

Accepted Solution

HornAlum earned 500 total points
ID: 39239263
those are not port numbers. that is your IPv6 address. If you're not using IPv6 in your network, you probably don't need to worry about it.

you can always try to add it back go to the properties of your NIC card. if you have "Internet Protocol Version 6" unchecked, you can recheck it.

If you then go back to the Interfaces tab, you should see it. You didn't say whether you are running 2003 or 2008. I know for sure 2008 will repopulate the IP without you having to restart the DNS Server service. 2003, you may need to restart.

Author Comment

ID: 39239277
Aaaah.  I see.  Lots of light bulbs coming on.  I have not seen one of these newfangled ipv6 addresses yet.  

Problem solved.

Expert Comment

ID: 39239282
glad to help!

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

OfficeMate Freezes on login or does not load after login credentials are input.
A procedure for exporting installed hotfix details of remote computers using powershell
This tutorial will show how to configure a new Backup Exec 2012 server and move an existing database to that server with the use of the BEUtility. Install Backup Exec 2012 on the new server and apply all of the latest hotfixes and service packs. The…
This tutorial will walk an individual through the process of transferring the five major, necessary Active Directory Roles, commonly referred to as the FSMO roles to another domain controller. Log onto the new domain controller with a user account t…

735 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question