non-24 bit subnets
Sam Wilson
Sam.Wilson at ed.ac.uk
Fri Oct 8 11:01:19 UTC 2010
In article <mailman.387.1286393895.555.bind-users at lists.isc.org>,
David Miller <dmiller at tiggee.com> wrote:
> You can have a different TTL for each and every record, if you like, in
> the same zone file with no includes (the $TTL directive can appear
> multiple times).
>
> e.g. :
>
> $TTL 300 ; 5 mins
> * PTR host-no-spec.example.com.
> $TTL 3600 ; 1 hour
> 17 PTR mail.example.com.
> $TTL 1800 ; 30 mins
> 18 PTR mail2.example.com.
> $TTL 86400 ; 1 day
> 19 PTR whatever.example.com
> 20 PTR whatever2.example.com
> 22 PTR whatever2.example.com
Or
$TTL 86400 ; 1 day
* 300 PTR host-no-spec.example.com.
17 3600 PTR mail.example.com.
18 1800 PTR mail2.example.com.
19 PTR whatever.example.com
20 PTR whatever2.example.com
22 PTR whatever2.example.com
Or further variations.
Sam
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