DDNS updates to two master DNS servers

Jeffrey Hutzelman jhutz at cmu.edu
Tue Dec 2 19:55:31 UTC 2008

--On Tuesday, December 02, 2008 01:23:38 PM -0500 "Glen R. J. Neff" 
<neff_glen at emc.com> wrote:

> On Tue, 2008-12-02 at 12:52 -0500, Jeffrey Hutzelman wrote:
>> You can do that if the zones are static.  Once you begin accepting
>> dynamic  updates, you can't just drop in new zone files, and you really
>> need a  single master to insure consistency.  Otherwise, sooner or later
>> you're  going to end up in a situation where some updates were applied
>> to one  server but not the other, and now both the zone contents and
>> serial numbers  are out of sync.
> With bind, you may not be able to do multi-master DDNS zones, but you
> can configure slaves to accept and forward updates to the master.

True, but in that scenario, it's not necessary for the DHCP server to send 
updates both places, as the OP was suggesting.

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