Dynamic updates AND multiple zones referencing one zone file?

[Mark Andrews]

> Hello -
>  
> I am trying to use have multiple zones reference one file while
> still maintaining the ability to use dynamic updates.
>  
> Is this possible?
>  
> My setup
>  
> [start]
> view "external" {
>     match-clients {
>         any;
>     };
>  
>     zone "test.com." {
>         type master;
>         file "db.test.";
>         allow-update {
>             localhost;
>         };
>     };
>     zone "test.org." {
>         type master;
>         file "db.test.";
>         allow-update {
>             localhost;
>         };
>     };
> }
> [end]
>  
> the file db.test.
> [start]
> $TTL 500        ; 8 minutes 20 seconds
> @              IN SOA  d62.test.net. hostmaster.d62.test.net. (
>                                 4          ; serial
>                                 10800      ; refresh (3 hours)
>                                 3600       ; retry (1 hour)
>                                 604800     ; expire (1 week)
>                                 60         ; minimum (1 minute)
>                                 )
>                         NS      d62.test.net.
> arec            A 1.2.3.4
> [end]
>  
> This works ok until I do a dynamic update with, for example,
> nsupdate.
>  
> nsupdate>
> >update add addtoorg.test.org. 500 IN A 4.4.4.4
> >
>  
> That adds the record to test.jnl and creates it in test.org
> zone such that
>  
> dig axfr test.org returns:
>  
> test.org.               500     IN      SOA     d62.test.net.
> hostmaster.d62.test.net. 5 10800 3600 604800 60
> test.org.               500     IN      NS      d62.test.net.
> addtoorg.test.org.      500     IN      A       4.4.4.4
> arec.test.org.          500     IN      A       1.2.3.4
> test.org.               500     IN      SOA     d62.test.net.
> hostmaster.d62.test.net. 5 10800 3600 604800 60
>  
> and dig axfr test.com returns:
> test.com.               500     IN      SOA     d62.test.net.
> hostmaster.d62.test.net. 4 10800 3600 604800 60
> test.com.               500     IN      NS      d62.test.net.
> arec.test.com.          500     IN      A       1.2.3.4
> test.com.               500     IN      SOA     d62.test.net.
> hostmaster.d62.test.net. 4 10800 3600 604800 60
>  
> 
> after doing an rndc stop, the record
> gets written to the "db.test" file.
> The zone file also gets changed to test.org specific.
> ie:
> $ORIGIN .
> $TTL 500        ; 8 minutes 20 seconds
> test.org                IN SOA  d62.test.net. hostmaster.d62.test.net. (
>                                 5          ; serial
>                                 10800      ; refresh (3 hours)
>                                 3600       ; retry (1 hour)
>                                 604800     ; expire (1 week)
>                                 60         ; minimum (1 minute)
>                                 )
>                         NS      d62.test.net.
> $ORIGIN test.org.
> addtoorg                A       4.4.4.4
> arec                    A       1.2.3.4
>  
> It looks like that is order dependent. The last one in the file wins?
> 
> So, the file is no longer useable for multiple zones.
>  
> My question is:
> Am I missing somne trick to do this or is it not possible to
> have multiple zones reference one file AND use dynamic updates
> on those zones?

	It is not possible.
  
> Thanks
> --
> Jack Tavares
>  
> 
> 
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org