[Pdns-users] Subdomain delegation

Dan Glass dan at nameplanet.com
Thu Aug 12 20:12:12 UTC 2004

And that is exactly what I want to happen.
This is not scary stuff - It can be determined without ambiguity.
The RFC amounts to this: Go from more specific to less specific.
PowerDNS CLEARLY does not do this.

That would make this a bug and make PowerDNS NOT RFC compliant.

-----Original Message-----
From: bert hubert [mailto:ahu at ds9a.nl] 
Sent: Thursday, August 12, 2004 11:43 AM
To: Dan Glass
Cc: pdns-users at mailman.powerdns.com
Subject: Re: [Pdns-users] Subdomain delegation

On Thu, Aug 12, 2004 at 11:24:56AM -0600, Dan Glass wrote:
> Why is this incorrect? 

> > *       in      cname   sd1.domain.com.
> > test    ns      york.otherdomain.com.

Well - it is screaming for problems at least. Both CNAMEs, and wildcards are
complicated enough on their own.

If I read the RFC 1034 DNS algorithm (4.3.2), in this case the NS record
will win for whatever.test, but would lose for blah, which would then be a
CNAME for sd1.domain.com. 

But who knows what might happen. This is scary stuff. Wildcards are fraught
with difficulties, as are CNAMEs.

http://www.PowerDNS.com      Open source, database driven DNS Software 
http://lartc.org           Linux Advanced Routing & Traffic Control HOWTO

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