CNAME Issue - Whether to use CNAME-data or Response-Flag

[Steven Wilmot]

-----Original Message-----
From: Doug Barton 

>>> I'll leave it up to the protocol experts to answer your question, but my
followup question is:

>> "what bad thing are you seeing happen because of this?"

A very minor side-effect (but one that I would like to understand the cause
of) is that when I try and resolve "mail.wilmot.me.uk" from my own network
(against a local caching-resolver (A Microsoft Win2003 server)) it is coming
bak with an error (when in fact I know that the record should exist)

>>  From your original post it seems like some resolvers are not doing what
BIND 9.6.2-P1 is doing, 

Precisely ...

In this particular case, the "SOME" includes Microsoft "WIn2003, Win2003 R2,
Win 2008" (but Win2008 R2 seems to be operating correctly forsome reason)..

>> namely chasing the CNAME to come up with an answer to the A query. Is
that your concern?

Yup ... 

Regards, 

Steven Wilmot 
Director 
Data Utilities Ltd