Ms dhcp not updating dns


12-Sep-2017 11:16

The way to get around this is you can configure DHCP’s Option 081 to update the record for all client, no matter if the client asks or not.

To configure DHCP Option 081, you must look at the DHCP server properties, under the DNS Tab in DHCP properties. If you have Windows 2008 R2 or Windows 2012 R2, in addition to configuring the DNS tab to force registration, you still must configure credentials and add the server to the Dns Update Proxy group.

Statically-set clients (static clients) that perform dynamic updates will send updates for both its A record (forward lookup record) and its PTR record (reverse lookup record) to the authoritative DNS server.

Clients with dynamically-set network connections (DHCP clients) will communicate with both the authoritative DNS server and the DHCP server for updating A and PTR records.

From there, the client continues communicating with the primary DNS server that is accepting the PTR record update.

Please see For a DHCP client, when some particular action causes its IP address to change, such as a DHCP lease renewal, if the client supports it, it will send Client FQDN information (DHCP option 81 flags) to the DHCP server.

When either type of client (static or DHCP client) initiates an A record update with its authoritative DNS server, it will first start by performing an SOA query for the FQDN of the client in question: The client then receives a response from the authoritative DNS server containing information about the server that is to process the dynamic update.

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By default, the ACL gives Create permission to all members of the Authenticated User group, the group of all authenticated computers and users in an Active Directory forest.

The DHCP server will use this information, along with its dynamic update configuration, to determine whether or not the DHCP server will perform the PTR record update against the authoritative DNS server on behalf of the client, or if the client will perform the PTR update against the authoritative DNS server on its own. The first step of this process still involves the client machine sending an SOA-type query to the configured DNS server.