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RE: [PATCH] posix/tst-getaddrinfo4: Consider EAI_NODATA as an expected result

Hi Florian,

> -----Original Message-----
> From: Florian Weimer <>
> Sent: Thursday, April 18, 2019 3:08 PM
> To: Alexey Brodkin <>
> Cc:;
> Subject: Re: [PATCH] posix/tst-getaddrinfo4: Consider EAI_NODATA as an expected result
> * Alexey Brodkin:
> > Some proxy DNS servers might not resolve IPv6 names to addresses.
> > Instead they reply with NOERROR while passing no real data.
> > That combination of NOERROR and EAI_NODATA happen because the DNS
> > server has a recored for requested name ( in our case)
> > but that record is not of AAAA type which was requested.
> I think this invalidates the test to a large degree.  I don't think this
> is a valid test environment.  You need to fix it.

I think more interesting would be to figure out if behavior that I see
is valid or not and then decide which test is representative.

>From my Googling I didn't find any data confirming that observed
behavior is incorrect, otherwise I would have asked our IT team to fix it.

Do you have a solid understanding that NOERROR && EIA_NODATA is not
valid combination?


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