Windows dns ptr records not updating

Posted by / 12-Aug-2017 04:44

As we noticed that only Windows 7 workstations with a static IP were being registered we started troubleshooting.As an AD guy I was 100% confident we could get this done using GPO’s.To be able to detect if the resource record is stale, every dynamically created RR in the Windows DNS has a timestamp that is updated with the dynamic update if scavenging is enabled.Manually created DNS records do not have a timestamp.Folks, I have a Juniper EX4200 DHCP server with Microsoft DNS server 2008, my problem is that since I installed the juniper DHCP server the reverse lookup zone on the microsoft DNS server stopped getting updated.I scoured the internet for a solution and found none, but it was mentioned somewhere that I should enable "option 81" on my EX4200 DHCP server. and does anyone know how to configure "option 81" and what is needed to be configured on the Microsoft DNS server side ?While DNS scavenging is not enabled on Active Directory servers by default, the SSSD should support this use case and refresh its DNS records to simulate the behavior of Windows AD clients and keep their address records from being removed if scavenging is used.

For the reverse lookup zones we configured secure only updates.

You, as a DHCP administrator, might want to enable DNS integration in order to automatically update the DNS records dynamically with the DHCP client computers’ information whenever the DHCP server assigns the IP address and other settings to them.

Since the DHCP server always assigns the dynamic IP addresses to the client computers which may change from time to time, and the DNS maintains the records of the information about the host names and their corresponding IP addresses, there must be some technology with the help of which the DNS server records can automatically get updated with the latest IP addresses that the DHCP server has assigned to the DHCP clients.

Optionally, for machines that use IP aliasing or setups that wish to update both IPv4 and IPv6 addresses of an interface at the same time there will be an option .

Contrary to IPA dynamic DNS update that generates the PTR record in the bind dyndb plugin, AD wouldn’t update the PTR record on its own when only A/AAAA record is updated.

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