Dhcp not updating reverse lookup
Dhcp not updating reverse lookup - classicdating com
When a DHCP server leases an address to a client, it can also perform registration of that computer’s address in DNS.
With the default settings, a duplicate A record gets registered by DHCP with the client’s new IP.
– Dynamically Update DNS Records For DHCP Clients That Do Not Request Updates Ensures that DNS records are always updated when the DHCP server leases an address.
This functions in a manner similar to the Always dynamically update DNS records option – Disable Dynamic Updates for DNS PTR Records Configures the DHCP server to update host (A) records, but does not update records in a reverse lookup zone.
I've been unsuccessful at finding a guide on how to integrate just ISC DHCP into an AD DNS environment.
The configuration file is below, but what I've noted when using ISC DHCP is that non-domain joined clients will not have an A record registered for them in forward/reverse lookup zones.
This behavior can occur if there is no reverse lookup zone for the IP subnet, or if the reverse lookup zone is not configured to allow dynamic updates.
Since there is no dynamic reverse lookup zone, the registration fails, but the DHCP database cleanup, performed every 60 minutes, attempts the registrations that previously failed.
FIGURE 4-4 DNS registration You can configure the following options: – Enable DNS Dynamic Updates According To The Settings Below Allows you to configure the DHCP server to only update DNS records when requested by the client (the default value) or to always dynamically update DNS records each time the DHCP server leases an address.
– Discard A And PTR Records When Lease Is Deleted Enabled by default, the DHCP server instructs the DNS server to remove any associated host and reverse lookup records when a DHCP lease expires and is deleted.
I'm attempting to replace Windows Server DHCP with ISC DHCP.
In order to do so, I need to be able to facilitate updating DNS records from clients that do and do not support dynamic DNS record registration.
You can configure DNS registration at the server level or at the individual scope level on the DNS tab of either the IPv4, IPv6 or individual scope properties dialog box.