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
*PTRhost-no-spec.example.com.
$TTL 3600; 1 hour
17 PTR mail.example.com.
$TTL 1800; 30
As long as all of the in-addr.arpa data is administered on the same
master(s), then just use an 8-bit zone i.e. 10.in-addr.arpa.
Everything within the 10 dot range all fits into a single zone.
The $INCLUDE directive gives you some independent flexibility,
and each record can (should) have its own
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Greetings,
I'm setting up a new DNS server for internal use in the two
departments I support. Up until very recently, all our subnets have had
24 bit masks, which has made configuring bind very easy. However, we
now have three sizes, and may have
For larger subnets just use multiple zones as necessary.
For 10.20.30.0/23 you have 30.20.10.in-addr.arpa and 31.20.10.in-addr.arpa.
For smaller than a /24 look at RFC 2317. That's only necessary if you want to
delegate authority to a different DNS server. If you have multiple networks in
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Thanks for the quick reply, Matt.
Unfortunately, we do have need -- or at least a use -- to have smaller
subnets in multiple files, but without delegating authority. The
problem is that some of those small subnets should have a shorter TTL,
or other
On Wed, 6 Oct 2010, Alex McKenzie wrote:
Unfortunately, we do have need -- or at least a use -- to have smaller
subnets in multiple files, but without delegating authority. The
problem is that some of those small subnets should have a shorter TTL,
or other settings changed. If there's a way to
On 10/6/2010 3:21 PM, Jay Ford wrote:
On Wed, 6 Oct 2010, Alex McKenzie wrote:
Unfortunately, we do have need -- or at least a use -- to have smaller
subnets in multiple files, but without delegating authority. The
problem is that some of those small subnets should have a shorter TTL,
or
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David Miller wrote:
On 10/6/2010 3:21 PM, Jay Ford wrote:
On Wed, 6 Oct 2010, Alex McKenzie wrote:
Unfortunately, we do have need -- or at least a use -- to have smaller
subnets in multiple files, but without delegating authority. The
problem
On Wed, 6 Oct 2010, Alex McKenzie wrote:
Out of curiosity: what if it's a /16 or /8 network? Do those also get
built as 24 bit files, or can they be built differently? I seem to
recall seeing an option for a reverse lookup file with hosts declared as:
x.y PTR host.domain.tld.
Does
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Jay Ford wrote:
On Wed, 6 Oct 2010, Alex McKenzie wrote:
Out of curiosity: what if it's a /16 or /8 network? Do those also get
built as 24 bit files, or can they be built differently? I seem to
recall seeing an option for a reverse lookup
In message 4cacdf3c.9040...@chem.umass.edu, Alex McKenzie writes:
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Jay Ford wrote:
On Wed, 6 Oct 2010, Alex McKenzie wrote:
Out of curiosity: what if it's a /16 or /8 network? Do those also get
built as 24 bit files, or can they be
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