Date: Wed, 13 Jun 2018 07:26:45 +0200 From: Florian Weimer <fw@...eb.enyo.de> To: Markus Wichmann <nullplan@....net> Cc: musl@...ts.openwall.com Subject: Re: musl dns search domain stop when current search got some error * 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).
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