reverse delegation of subnet

[Bill Moseley]

At 06:51 PM 08/09/00 +0200, Thomas Reitelbach wrote:

>i've got a question about reverse delegating a subnet.
>i've got a /29 subnet starting at 62.153.204.64 and have to set up a
>reverse zone for that ip-range, but how do i do that?

You will need to talk to your ISP for delegation and the details for your
zone as there are a couple of ways to set it up, and it depends on how your
ISP does the CNAME mapping to your name server.

Your reverse lookup won't work now since it isn't delegated by your ISP,
that's why your tests are failing.


>64.204.153.62.in-addr.arpa.     IN      SOA     frzdaten.troficent.de.
...
>68                      IN      PTR     frzdaten.troficent.de.
>66                      IN      PTR     ns2.troficent.de.
>65                      IN      PTR     pleasure.troficent.de.     

>i thought that it would be ok this way, but when i make a nslookup
>"nslookup 62.153.204.68" i see the following:

Using your zone file name, to test locally, you would have ask your name
server to lookup.

  68.64.204.153.62.in-addr.arpa.

To make that work on the internet, your ISP will have to make a CNAME
mapping to that name, an provide the delegation to your name server so
people can follow the CNAME.

Use dig to test, and set no recurse so you don't get responses from other
servers.




Bill Moseley
mailto:moseley at hank.org