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From: Florian Weimer <fw@deneb.enyo.de>
To: Markus Wichmann <nullplan@gmx.net>
Cc: musl@lists.openwall.com
Subject: Re: musl dns search domain stop when current search got some error
Date: Wed, 13 Jun 2018 07:26:45 +0200	[thread overview]
Message-ID: <874li7b6ju.fsf@mid.deneb.enyo.de> (raw)
In-Reply-To: <20180612041231.GA23756@voyager> (Markus Wichmann's message of "Tue, 12 Jun 2018 06:12:31 +0200")

* Markus Wichmann:

> Let me stop you there. I think we already had this discussion once, but
> here goes: code 0 means "Name exists". No answers mean "No record of
> this type exists". Therefore, if one of your local resolvers does that,
> it means to tell you that the name exists, just no records of type A or
> AAAA or CNAME. If the name actually does not exist, then this is a bug
> in the DNS server and should be fixed there.

NODATA (RCODE 0 without any data) for non-existing names is part of
the DNS protocol as it is deployed, for various reasons (empty
non-terminals, enumeration protection, online signing).


      parent reply	other threads:[~2018-06-13  5:26 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-12  0:54 王志强
2018-06-12  4:12 ` Markus Wichmann
2018-06-12  4:53   ` William Pitcock
2018-06-13  5:26   ` Florian Weimer [this message]

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