[Pdns-users] CNAME lookup failure PDNS 2.9.22/PDNS Recursor 3.3.1

[ktm at rice.edu]

Hi PDNS community,

I am investigating a CNAME resolution problem using
PDNS Recursor 3.3.1. Here is the lookup that fails:

> nslookup blog.mythandsymbol.com
Server:		127.0.0.1
Address:	127.0.0.1#53

** server can't find blog.mythandsymbol.com: NXDOMAIN

Is is actually a CNAME:

> nslookup -type=cname blog.mythandsymbol.com
Server:		127.0.0.1
Address:	127.0.0.1#53

Non-authoritative answer:
blog.mythandsymbol.com	canonical name = domains.tumblr.com.

And that name looks up as well:

> nslookup domains.tumblr.com
Server:		127.0.0.1
Address:	127.0.0.1#53

Non-authoritative answer:
Name:	domains.tumblr.com
Address: 66.6.44.4

The problem is that the first lookup does not restart the
DNS resolution process with the value that was returned from
the original CNAME lookup. Is this a known bug and if so, is
their a fix. Here is what Google DNS returns:

> nslookup blog.mythandsymbol.com 8.8.8.8
Server:		8.8.8.8
Address:	8.8.8.8#53

Non-authoritative answer:
blog.mythandsymbol.com	canonical name = domains.tumblr.com.
Name:	domains.tumblr.com
Address: 66.6.44.4

Thank you for any suggestions.

Regards,
Ken