Bug#305714: marked as done (gethostby*.getanswer: ... got type "39")
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and subject line Bug#305714: gethostby*.getanswer: ... got type "39"
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>From dean-debian@arctic.org Thu Apr 21 09:59:57 2005
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Date: Thu, 21 Apr 2005 09:59:56 -0700 (PDT)
From: dean gaudet <dean-debian@arctic.org>
To: submit@bugs.debian.org
Subject: gethostby*.getanswer: ... got type "39"
Message-ID: <[🔎] Pine.LNX.4.62.0504210954440.1382@twinlark.arctic.org>
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i've started seeing entries like this in my syslog:
Apr 21 09:48:06 twinlark curl: gethostby*.getanswer: asked for "ethereal.net.nyud.net IN A", got type "39"
type 39 is a DNAME record <http://www.faqs.org/rfcs/rfc2672.html>, and
DNAMEs are apparently in use by the coral content distribution network
<http://www.coralcdn.org/>.
for example:
% dig ethereal.net.nyud.net
...
;; ANSWER SECTION:
nyud.net. 12290 IN DNAME http.l2.l1.l0.nyucd.net.
ethereal.net.nyud.net. 0 IN CNAME
ethereal.net.http.l2.l1.l0.nyucd.net.
ethereal.net.http.l2.l1.l0.nyucd.net. 12296 IN CNAME
http.l2.l1.l0.nyucd.net.
http.l2.l1.l0.nyucd.net. 30 IN A 128.112.139.102
http.l2.l1.l0.nyucd.net. 30 IN A 152.2.130.67
http.l2.l1.l0.nyucd.net. 30 IN A 152.3.138.3
it would be preferable for the resolver to ignore type 39 records rather
than log about them. (well maybe the resolver should implement type 39,
but i don't mind about that either way -- it's the logging which i'd
rather not have :)
thanks
-dean
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>From gotom@debian.or.jp Thu Apr 21 17:05:21 2005
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Date: Fri, 22 Apr 2005 09:05:20 +0900
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From: GOTO Masanori <gotom@debian.or.jp>
To: dean gaudet <dean-debian@arctic.org>, 305714-done@bugs.debian.org
Subject: Re: Bug#305714: gethostby*.getanswer: ... got type "39"
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At Thu, 21 Apr 2005 09:59:56 -0700 (PDT),
dean gaudet wrote:
> i've started seeing entries like this in my syslog:
>
> Apr 21 09:48:06 twinlark curl: gethostby*.getanswer: asked for "ethereal.net.nyud.net IN A", got type "39"
>
> type 39 is a DNAME record <http://www.faqs.org/rfcs/rfc2672.html>, and
> DNAMEs are apparently in use by the coral content distribution network
> <http://www.coralcdn.org/>.
>
> for example:
>
> % dig ethereal.net.nyud.net
> ...
> ;; ANSWER SECTION:
> nyud.net. 12290 IN DNAME http.l2.l1.l0.nyucd.net.
> ethereal.net.nyud.net. 0 IN CNAME
> ethereal.net.http.l2.l1.l0.nyucd.net.
> ethereal.net.http.l2.l1.l0.nyucd.net. 12296 IN CNAME
> http.l2.l1.l0.nyucd.net.
> http.l2.l1.l0.nyucd.net. 30 IN A 128.112.139.102
> http.l2.l1.l0.nyucd.net. 30 IN A 152.2.130.67
> http.l2.l1.l0.nyucd.net. 30 IN A 152.3.138.3
>
> it would be preferable for the resolver to ignore type 39 records rather
> than log about them. (well maybe the resolver should implement type 39,
> but i don't mind about that either way -- it's the logging which i'd
> rather not have :)
RFC3364 pointed out that both A6 and DNAME has benefit and drawback.
I think it should not be ignored because it's currently marked as
experimental, and it's sane to warn because it's not implemented.
Moreover this warning is also happenned on various OSes including
BSDs. I rathar disagree with your opinion with the above reasons.
Regards,
-- gotom
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