[Unbound-users] how to handle dname record in unbound?
totopper at qq.com
Thu May 8 10:38:12 CEST 2014
I read the source code again, the basic process logic is in function scrub_normalize,in this function ,unbound synthesize the CNAME record if necessary.
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From: "W.C.A. Wijngaards";<wouter at nlnetlabs.nl>;
Date: Thu, May 8, 2014 03:55 PM
To: "unbound-users"<unbound-users at unbound.net>;
Subject: Re: [Unbound-users] how to handle dname record in unbound?
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On 05/08/2014 09:33 AM, lin wrote:
> all, When I read source code of unbound, in the source file
> iterator.c, a function named handle_cname_response has some
> comments as follow. " /* If there is a (relevant) DNAME, add it to
> the list. * We always expect there to be CNAME that was generated *
> by this DNAME following, so we don't process the DNAME * directly.
> */ " Do it means that the authoritative must synthesize a cname
> record for each dname record? and if the authoritative do not
> synthesize a cname record from dname record, how to deal with the
The CNAME is synthesized by unbound itself, but in a different part of
the code. And thus this part of the code can simply process the
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