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To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
CC: Brian Inglis <Brian DOT Inglis AT SystematicSW DOT ab DOT ca>
Subject: RE: [EXTERNAL] Re: Win 11 Cygwin dns-utils "dig" and "host": Option
-6 causes command to timeout
Thread-Topic: [EXTERNAL] Re: Win 11 Cygwin dns-utils "dig" and "host": Option
-6 causes command to timeout
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Date: Thu, 15 Feb 2024 02:11:38 +0000
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From: "Lavrentiev, Anton \(NIH/NLM/NCBI\) \[C\] via Cygwin" <cygwin AT cygwin DOT com>
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> $ host -6 google.com
> ;; connection timed out; no servers could be reached

FWIW, this hangs just the same on Linux when no IPv6 nameservers configured in /etc/resolv.conf

What it tries to do is to inquire the nameserver at [::1]:53 (which is the local host),
and then, since bind is not running on the host, that times out.

This, however, is looks like a bug to me:

> Failing assertion due to probable leaked memory in context 0xa00020be0 ("dig")
> (stats[4].gets == 1).
> mem.c:1121: INSIST(ctx->stats[i].gets == 0U) failed.

and I can't see the same on Linux.

Anton Lavrentiev
Contractor NIH/NLM/NCBI

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