Dhcp server not updating dns records


13-Jun-2020 17:12

If you're having a problem with your internal DNS server that's then making you use the router for DHCP and DNS then the fix is to resolve the problem with the DNS server.

When you say "DNS on the server doesn't seem to get updated with the latest IP number" can you explain what you mean and what the symptomes of the problem are?

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Visit Stack Exchange I've stumbled upon a strange behaviour with Windows machines, which seems to be fairly consistent between all Windows versions from Vista/2008 to 8.1/2012 R2; it doesn't happen instead when using Windows XP or Windows Server 2003.

This could easily be overkill, but since the above answers didn't cover things from a group policy angle here goes. sends option 81 and its fully qualified domain name to the DHCP server and requests the DHCP server to register a pointer resource record (PTR RR) on its behalf.

The dynamic update client registers an address resource record (A RR). the DHCP server can be configured to instruct the client to allow the server to register both records with the DNS.

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A network capture of traffic exiting your network will probably confirm that.

The problem is this: when the network adapter is configured for DHCP and the DHCP server doesn't register DNS records on behalf of its clients (because it can't, or because it's not configured to do so), then in the TCP/IP settings of the network interface: As much as it may appear strange, this is the only solution to ensure Windows will register both the A and the PTR records for a DHCP network connection; otherwise, it will only register the A record.

I ran into the same issue years ago the following group policy settings are how I resolved it.

- More specifics in my blog, with screenshots: This blog covers the following: DHCP Service Configuration, Dynamic DNS Updates, Scavenging, Static Entries, Timestamps, Dns Update Proxy Group, DHCP Credentials, prevent duplicate DNS records, DHCP has a "pen" icon, and more...

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Published by Ace Fekay, MCT, MVP DS on Aug 20, 2009 at AM 3758 2 summary How Dynamic DNS behaves with multiple DHCP servers on the same Domain?

Statically configured (non-DHCP) clients register both the A RR and the PTR RR with the DNS server themselves.



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