Date: Mon, 19 Jul 2021 23:07:21 +0200 From: "Olivier A." <olivier.antoine@...il.com> To: musl@...ts.openwall.com Subject: Re: getaddrinfo() fails for domains with no AAAA records (regression?) On 19/07/2021 14:58, Yuri Kanivetsky wrote: > [..] Hi, I notice that too. If both A and AAAA are sent and there is a response for A and NXDomain for AAAA musl-libc discard both results. It's the expected behaviour according to this commit: https://git.musl-libc.org/cgit/musl/commit/src/network/lookup_name.c?id=5cf1ac2443ad0dba263559a3fe043d929e0e5c4c And it conform to https://datatracker.ietf.org/doc/html/rfc8020 It's was not the case before Alpine-Linux 3.13 But I also notice that if the DNS reply ServFailed instead of NXDomain for AAAA request, musl-libc retry 10 times, return 'bad address' and do not fallback to return a A record. According to https://datatracker.ietf.org/doc/html/rfc4074#section-4.3 it's not expected. Yours, -- Olivier Antoine
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