From: Markus Wichmann <nullplan@gmx.net>
To: musl@lists.openwall.com
Subject: Re: [musl] lookup_name issue with search domains
Date: Sun, 4 Dec 2022 06:45:59 +0100 [thread overview]
Message-ID: <20221204054559.GB23755@voyager> (raw)
In-Reply-To: <20221204040254.pfd3bqjztfw4vrue@localhost>
On Sun, Dec 04, 2022 at 12:02:54AM -0400, Kenny MacDermid wrote:
> The issue arises when it queries my cloudflare hosted domain (which also
> uses dnssec). That query does not have the reply code flags set to 3.
> Instead it's set to 0. This results in name_from_dns() returning
> EAI_NODATA.
I think we had that report before. The problem is that cloudflare is
wrong here. DNS response with empty data section and NOERROR status
means the domain name exists, but has no records of the requested type.
If cloudflare is reporting that for a name where that isn't true, they
are making a mistake.
This is a cloudflare-specific break with the DNS standards (don't ask me
which, though), so we probably won't change musl to deal with this.
Simplest solution for the known-bad actor is to write a proxy server
that turns the wrong answers into correct ones.
Ciao,
Markus
next prev parent reply other threads:[~2022-12-04 5:46 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-04 4:02 Kenny MacDermid
2022-12-04 5:45 ` Markus Wichmann [this message]
2022-12-04 15:31 ` Rich Felker
2022-12-04 23:04 ` Kenny MacDermid
2022-12-05 13:26 ` Rich Felker
2022-12-05 20:11 ` Kenny MacDermid
2022-12-05 22:25 ` Quentin Rameau
2022-12-06 5:19 ` Kenny MacDermid
2022-12-06 9:57 ` Quentin Rameau
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