"Duplicate Zone Found" Error

[Bulls, Steven R Mr SAIC]

> Greetings...
> 
> 	I've hunted far and wide for an answer to this question and have
> yet to get one...
> 
> 	I have several /24 subnets that I have delegated and I have
> begun to get 'duplicate zone found' errors when resolving the hosts at
> places like dnsstuff_dot_com.  Here is an example of the configuration
> that is in the db file for the zone...
> 
> $ORIGIN 1.214.in-addr.arpa.
> .
> 
> 123             IN      NS      hasdmz03.ha.osd.mil.    
>                   IN      NS      densedns01.ha.osd.mil.
> 
> 206             IN      NS      hasdmz03.ha.osd.mil.    
>                   IN      NS      densedns01.ha.osd.mil.
> 
> 	The 2 NS records are the delegated zones' name servers.  The
> error ONLY shows up if one of my servers redirects the query to one of
> these servers.  If my machines respond directly, the error is not
> there.  The problem is that sometimes resolving for the hosts on the
> subnets simply doesn't work which does not allow the querying machine
> to get access to the hosts (web sites).  FWIW, I am running bind 9.2.3
> on Solaris 8.  Also, this configuration has been in place for quite a
> while and just recently (mid-February) has the error reared its ugly
> head.  It all seems to coincide with an update of the DNS servers from
> bind 9.2.1 to 9.2.3... (the first of February).   =?
> 
> 	Any clues??
> 
> Thanks.
> 
> Steve
> Steven Bulls
> Network Engineer, SAIC
> 
>