syntax/format of zone on slave $ORIGIN/paragraph - sorted?

[Walter Smith]

Yes!

So - I want to combine and sort unique $ORIGINs without seeing same $ORIGIN again and again.

Like in your example, I would prefer to see just _ONE_ time this sorted paragraph:
<<$ORIGIN admin.cam.ac.uk. >> and not having multiple entries...



$ORIGIN cam.ac.uk. 
 admin                   MX      7 mx 
 $ORIGIN admin.cam.ac.uk.    <<<---------------- FIRST OCCURENCE
 aat                     A       131.111.150.33 
 alumni                  A       131.111.150.60 
 blog                    CNAME   webservices 
 $ORIGIN blog.admin.cam.ac.uk. 
 preview                 CNAME   cms.admin.cam.ac.uk. 
 $ORIGIN admin.cam.ac.uk.   <<< ---------------- SECOND OCCURENCE
 bolero                  CNAME   ufsplay 
 bpaservices             A       131.111.150.69 
 www.business            CNAME   www 
 camino                  A       131.111.150.91 



--- On Thu, 2/10/11, Chris Thompson <cet1 at cam.ac.uk> wrote:

From: Chris Thompson <cet1 at cam.ac.uk>
Subject: Re: syntax/format of zone on slave $ORIGIN/paragraph - sorted?
To: "Barry Margolin" <barmar at alum.mit.edu>
Cc: "Bind-Users List" <bind-users at isc.org>
Date: Thursday, February 10, 2011, 9:48 AM

On Feb 10 2011, Barry Margolin wrote:

>When writing the zone file on a slave, BIND uses $ORIGIN so that all 
>records just have a single label.  So instead of writing:
>
>foo.bar IN A 1.2.3.4
>
>it will write:
>
>$ORIGIN bar
>
>foo IN A 1.2.3.4
>
>If you have a zone with lots of levels of subdomain, the file will have 
>lots of $ORIGIN statements as a result.

Except that the rules seem to be a bit more complicated than that. (I am
using "named-checkzone -D -s relative" but I am pretty sure the same code
is involved.) Here's an extract:

$ORIGIN cam.ac.uk.
admin                   MX      7 mx
$ORIGIN admin.cam.ac.uk.
aat                     A       131.111.150.33
alumni                  A       131.111.150.60
blog                    CNAME   webservices
$ORIGIN blog.admin.cam.ac.uk.
preview                 CNAME   cms.admin.cam.ac.uk.
$ORIGIN admin.cam.ac.uk.
bolero                  CNAME   ufsplay
bpaservices             A       131.111.150.69
www.business            CNAME   www
camino                  A       131.111.150.91

So why did it dive into a subdomain for preview.blog.admin.cam.ac.uk,
but not for www.business.admin.cam.ac.uk? These lines

$ORIGIN blog.admin.cam.ac.uk.
preview                 CNAME   cms.admin.cam.ac.uk.
$ORIGIN admin.cam.ac.uk.

could have been replaced by

preview.blog            CNAME   cms

just as in the latter case.

-- 
Chris Thompson
Email: cet1 at cam.ac.uk
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