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
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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.

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
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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!

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