Probing the DNS servers via dig returns no records for the hostname.Windows DHCP clients in the domain which have reservations properly update DNS. Are your DHCP servers set to update DNS even with an unauthenticated requests?Most home users who use DSL/Cable routers as DHCP/NAT servers to facilitate multiple host connections to the Internet should turn off dynamic DNS updates.
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To turn off DNS updates on Windows 2000/XP/2003 configured with DHCP clients (refer to Figure 1): To turn off DNS updates on Window Server 2000 running DHCP Server (refer to Figure 2 below): Microsoft Windows Server 2003 automatically sends DNS updates to each of its DHCP clients.
Most people use a NAT router at home for connecting to the Internet, and most consumer-grade NAT routers offer some limited version of DHCP for automatically handing out IP addresses to desktops and laptops and game consoles and smartphones and some limited version of DNS for making sure all the devices on the network know what all the other devices are called.
We have a set of Windows 2012R2 domain controllers which provide DNS and DHCP service for the network.
I have an Ubuntu 14.04 server which is getting addresses via DHCP. In the Windows DHCP server, I have converted the lease to a reservation.
You can search around and find tons of other writeups about deploying DNS and DHCP and getting them to update each other.
However, no single tutorial worked for me—so, this is a write-up of everything I had to do to get the end-to-end solution working. Both BIND9 and DHCP are are available in handy-dandy prepackaged form if you’re running Ubuntu or another Debian-based distro: 1 $ sudo aptitude install bind9 isc-dhcp-server In versions of Ubuntu prior to 11.04, the DHCP server package was simply called is beyond me).
In the correct setup, the LDNS should point the DHCP client to a domain name server (could be itself) inside the internal network.
However, in many cases when the DHCP and DNS configurations have inconsistencies, the LDNS may direct the DHCP client to a place outside the local scope, resulting in leakage of private DNS updates to the global network.
If you’re running DHCP and DNS on your NAT router, now would be a good time to disable it.