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Dhcp clients not updating dns

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.

DHCP requires the use of DNS dynamic update to keep name-to-address mapping information synchronized.

For updated detailed IT pro information about DHCP and DNS, see the Windows Server 2008 documentation on the Microsoft Tech Net Web site.

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.

This association, or mapping, of an IP address to a domain name requires that a change in either the address or the name necessitates an update of the information in DNS.

The DHCP protocol does not automatically update DNS in the event that the DHCP server changes the IP address of a client.

If you're waiting on DNS scavenging, there's no fast way to do it.

Just let it ride until you're seeing id 2501 events in the DNS Server event logs.

If I then restart the PC, it picks up 11 and 12 again though.