Dhcp lease not updating dns
If you choose to participate, the online survey will be presented to you when you leave the Technet Web site. - 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...
The DNS Client service performs this function for all network connections on the client, including any that are not configured to use DHCP.Under Windows NT, DNS was static and had to be manually altered to make changes.With the advent of Windows 2000, many administrators were elated to hear that it contained a new feature called Dynamic DNS (DDNS).Changing the timeouts is only going to help clients the next time they check in, which is usually after half the existing lease time, or sometimes during boot.You can approach this by manually forcing the clients to check in.To access this menu and configure DHCP for dynamic updates: If you select Active Directory-Integrated, you can choose Secure only from the Dynamic Updates drop-down list.
If AD is not running, your choice is simply Yes or No to allow dynamic updates.
You might be able to do this by tweaking some group policy settings, or by running a script to bulk "ipconfig /registerdns" on a bunch of clients.
If you insist on doing this from the server end of things, it should be possible to write a custom program to read the entries from a DHCP lease export, and register the addresses, but be sure to run it as the same account that DHCP uses for registrations, or else it may have trouble updating the entries in the future.
When DHCP changes IP address information, corresponding DNS updates synchronize name-to-address associations for the computer.
When a DHCP server registers and updates DNS pointer (PTR) and address (A) resource records on behalf of its DHCP-enabled clients, it uses the information contained within an additional DHCP option: the Client FQDN option (option 81), which permits a client to provide its FQDN and any instructions to the DHCP server that is used to process DNS dynamic updates on its behalf.
It might be easier to drop your scope lease time really low, then delete all the dynamic DNS records and let them get re-created.