non-24 bit subnets
Barry Finkel
b19141 at anl.gov
Thu Oct 7 12:36:37 UTC 2010
>
>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 you can put a TTL on an individual line:
$TTL 300 ; 5 mins
* 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
Those lines without a TTL get the first $TTL in the zone.
----------------------------------------------------------------------
Barry S. Finkel
Computing and Information Systems Division
Argonne National Laboratory Phone: +1 (630) 252-7277
9700 South Cass Avenue Facsimile:+1 (630) 252-4601
Building 240, Room 5.B.8 Internet: BSFinkel at anl.gov
Argonne, IL 60439-4828 IBMMAIL: I1004994
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