Dhcp not updating reverse dns

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In any case, the queries from the Palo Alto are made from the appropriate layer 3 interfaces with the corresponding IPv6 addresses, in my case 205::1, etc.: For more information about the DNS proxy use this Palo Alto Networks article: How to Configure DNS Proxy on a Palo Alto Networks Firewall.

Also note that during some configuration changes (commits) on the Palo Alto, the DNS proxy was not working anymore at all!

Additionally, 'Discard A and PTR records when lease is deleted' option also does not work.

I have experimented with these settings using a short DHCP lease time of 5 minutes. But if I disconnect the computer within the 5 minutes, it certainly wont delete the record when the lease is deleted at the end of the 5 minutes.

Active directory integrated DNS is installed along with DHCP on the DC.

I have configured the following on the dhcp server properties; In the dhcp console if I right click on IPV4 and select properties dns tab - 'Enable DNS Dynamic updates according to the settings below' is ticked - 'Always dynamically update DNS A and PTR records' is selected - 'Discard A and PTR records when lease is deleted' is ticked In the advanced tab credentials button: - I have entered in the credentials of a domain admin user account, this domain admin account is a member of the 'Dns Update Proxy' security group in active directory.

It uses the IPv4 address of the Palo Alto layer 3 interface ( for DNS queries.

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There is no entry in the reverse zone for the ip address either.Well, the issue with NCSec Desc is not a problem if you're not, and not planning to run an RODC.I have a feeling that your issue is either with your DNS setup, or your replication.However, I do not have a entry in the reverse lookup zone.Can someone please help me troubleshoot why DHCP is not updating DNS correctly. Are you by any chance running DNS on multiple Domain Controllers? Each DC has DNS which is AD integrated and is a DHCP server.

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