[Pdns-users] Wildcard record based on type

[John Miller]

Hi Fernando,

This is how wildcard DNS is supposed to behave.  Only if there's no 
label for your query will the wildcard entry be read.

In your case, yes, if there's a TXT record

test.example.org.	TXT	adsfasdfasdfasdfasdfasdfasdfasdfasdf

then a query of

test.example.org.	A?

will not fall through to the wildcard, because there's a record with 
label "test".

See section 2.2.1 in RFC 4592 (http://tools.ietf.org/html/rfc4592) for a 
fairly good example of this.

You could of course write your own code to look for a wildcard entry (by 
querying something outlandish like qwerqwerqwerwqerwqerqwer.example.org 
and checking the response).

Can you explain why you'd want to do this, however?  In what cases would 
you have a TXT record for a label, but want to use a wildcard A record?

John



On 05/14/2013 02:59 PM, Fernando Morgenstern wrote:
> Hi,
>
> I have a wildcard of type A for a certain domain ( Eg.: *.example.org
> <http://example.org> ).
>
> I noticed that it only works if no records are found for a subdomain,
> including other types like TXT, SPF etc.
>
> Example: if there is a test.example.org <http://test.example.org> record
> of type TXT but no record for the subdomain of type A, wildcard won't work.
>
> Is it possible to avoid this and force powerdns to always use the wildcard?
>
> Thanks.
>