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Re: intermittent name resolution failures

From <tomas@tuxteam.de>
Newsgroups linux.debian.user
Subject Re: intermittent name resolution failures
Date 2018-12-28 10:00 +0100
Message-ID <x9W9Q-22d-9@gated-at.bofh.it> (permalink)
References <x9SfT-8cq-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, Dec 27, 2018 at 11:41:48PM -0500, kamaraju kusumanchi wrote:
> How to debug intermittent name resolution failures on a Debian Stretch machine?

[...]

> ;; Received 525 bytes from 8.8.8.8#53(8.8.8.8) in 11 ms

I take your DNS server is 8.8.8.8 (kids, do we have to hand off every
bit of our lives to The Goog? But I disgress).

My top two would be that either 8.8.8.8 is down (hee, hee ;-) or that
your Internet connection is down. I'd guess number two is the case.

So I'd guess that it's not only your DNS resolution failing.

Whenever your DNS fails try a "traceroute 8.8.8.8". Compare its results
to what you get when you do it at times where your DNS works. Perhaps
this sheds some light on it.

Cheers
-- tomás

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Thread

intermittent name resolution failures kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2018-12-28 05:50 +0100
  Re: intermittent name resolution failures <tomas@tuxteam.de> - 2018-12-28 10:00 +0100
    Re: intermittent name resolution failures Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-12-28 12:00 +0100
      Re: intermittent name resolution failures <tomas@tuxteam.de> - 2018-12-28 12:10 +0100
    Re: intermittent name resolution failures kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2018-12-28 18:30 +0100
      Re: intermittent name resolution failures Florian Weimer <fw@deneb.enyo.de> - 2018-12-28 20:50 +0100
        Re: intermittent name resolution failures kamaraju kusumanchi <raju.mailinglists@gmail.com> - 2018-12-30 08:00 +0100

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