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Date:	Wed, 13 Jan 2016 12:02:43 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: getaddrinfo fails with EAI_NODATA for some valid hosts with A records
Message-ID:	<20160113110243.GB16198@calimero.vinschen.de>
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References:	<loom DOT 20160107T163448-78 AT post DOT gmane DOT org> <20160108111408 DOT GH20447 AT calimero DOT vinschen DOT de> <loom DOT 20160113T042110-649 AT post DOT gmane DOT org>
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On Jan 13 08:14, Brian Inglis wrote:
> Corinna Vinschen <corinna-cygwin <at> cygwin.com> writes:
> > On Jan  7 15:39, Brian Inglis wrote:
> >> getaddrinfo fails with err 7 EAI_NODATA for some valid hosts with A re=
cords.=20
> >> Err 7 EAI_NODATA is mapped from WSANO_DATA err 11004 in Windows.
> >> Can anyone reproduce failure with problem host name below?=20
> >=20
> > Yes, I can reproduce it, and it's a total surprise.
>=20
> > I have no idea why Windows' getaddrinfo chokes on leapsecond.utcd.org
> > at all.
>=20
> Especially when after just one getaddrinfo call, the DNS cache is populat=
ed
> with:
>     leapsecond.utcd.org
>     ----------------------------------------
>     Record Name . . . . . : leapsecond.utcd.org
>     Record Type . . . . . : 1
>     Time To Live  . . . . : 600
>     Data Length . . . . . : 4
>     Section . . . . . . . : Answer
>     A (Host) Record . . . : 244.34.36.97
>=20
> so the DNS server is being contacted and responding normally, but it would
> appear Windows GAI is failing to use that info.=20
> Has this been reproduced on W10 so we can report this upstream?=20

I can reproduce this on W10 as well.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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