Reverse delegation and Subnets

James Raftery james-bind-users at now.ie
Fri Oct 26 09:22:45 UTC 2001


On Thu, Oct 25, 2001 at 11:49:04PM +0000, the_fang wrote:
> I have a /28 with UUnet, and they've delegated "0.xxx.xxx.xxx.in-addr.arpa"
> to my DNS server. I configured Tinydns for 0.xxx.xxx.xxx.in-addr.arpa, but
> it then doesn't answer queries on any of my IP addresses. Configuring it
> for xxx.xxx.xxx.in-addr.arpa works fine, but then (obviously?) my reverse
> mappings don't make it out into the real world. 

You're probably not querying it for the correct record. Remember, with
sub /24 delegations done by CNAME your DNS server doesn't have the
reverse records for your IP block, your provider does. Your provider
tells the world that each ``real'' record is an alias for a record in
the zone on your servers.

Tell us what your actual IP block and server IP is and we might be
able to give you concrete answers.


james
-- 
James Raftery (JBR54)
  "It's somewhere in the Red Hat district"  --  A network engineer's
   freudian slip when talking about Amsterdam's nightlife at RIPE 38.

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