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Re: erratic host lookup failures

daemon@ATHENA.MIT.EDU (John Hawkinson)
Tue Jul 10 09:17:31 2001

Date: Tue, 10 Jul 2001 09:17:26 -0400
From: John Hawkinson <jhawk@MIT.EDU>
To: Garry Zacheiss <zacheiss@MIT.EDU>, "Thomas H. Grayson" <thg@MIT.EDU>
Cc: testers@MIT.EDU
Message-ID: <20010710091726.V6091@multics.mit.edu>
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In-Reply-To: <200107100551.BAA26900@byte-me.mit.edu>; from mitchb@MIT.EDU on Tue, Jul 10, 2001 at 01:51:24AM -0400


I see this failure on 9.0 machines and not 8.4 machines as well.
I had meant to document it, but I had somehow managed to get in the habit
of working around it instead. :-(

Garry Zacheiss <zacheiss@MIT.EDU> wrote on Tue, 10 Jul 2001
at 03:32:49 -0400 in <200107100732.DAA24344@riff-raff.mit.edu>:

>        This looks suspiciously like the failure documented in Sun Alert
> 26283, titled "Host Name Lookups Might Fail When Using DNS".  The
> problem description does match what you describe (affects only Solaris
> 8, happens about 1% of the time).

It certainly does seem to happen a lot more than 1% of the time.
More like 30% of the time for newly resolved domain names.


Thomas H. Grayson <thg@MIT.EDU> wrote on Tue, 10 Jul 2001
at 06:36:39 -0400 in <200107101036.GAA28394@mansard.mit.edu>:

> I've also seen this sort of behavior on my office PC, which is running
> Windows 2000, using either IE 5.5 SP1 or Netscape 4.7x.  I've always
> attributed it to network latency.  Sometimes with IE it refuses to
> recheck the site when I refresh the page, forcing me to add an extra
> slash (/) at the end to trick it into trying again, which then almost
> always works promptly.

I don't really see how network latency could cause this behavior -- could
you be more explicit about what you're thinking of?

--jhawk

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