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Date: Fri, 5 Dec 1997 08:55:06 -0800 (PST)
From: Tom Bartol <bartol@salk.edu>
To: Greg Lehey <grog@lemis.com>
cc: dmaddox@scsn.net, emulation@FreeBSD.ORG
Subject: Re: DNS Troubles w/Linux Apps
In-Reply-To: <19971204181508.14476@lemis.com>
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We've been seeing similar behaviour with Matlab.  We came up with a
workaround by creating a /compat/linux/etc/hosts file and creating entries
in that file (in the standard /etc/hosts format, of course) for all the
machines we need Matlab to reach.  

Tom


On Thu, 4 Dec 1997, Greg Lehey wrote:

> On Wed, Dec 03, 1997 at 05:55:44PM -0500, Donald J. Maddox wrote:
> >     When running the Linux RealPlayer 5.0b2, I am seeing some
> > strange problems with DNS.  If I try to access a RealMedia
> > URL containing a hostname that needs to be resolved, it will
> > invariably fail in an odd way:  With tcpdump, I can see a
> > query to the nameserver, then an answer from the nameserver,
> > but the RealPlayer continues to query as if it didn't get
> > an answer until it finally times out, like so:
> >
> > <Attempt to open pnm://video.real.com/welcome.rm>
> >
> > 17:45:33.199031 208.133.153.54.1335 > 206.25.246.5.domain: 19488+ A? video.real.com. (32)
> > 17:45:33.500296 206.25.246.5.domain > 208.133.153.54.1335: 19488 1/0/0 (48)
> > 17:45:38.230538 208.133.153.54.1336 > 206.25.246.3.domain: 19488+ A? video.real.com. (32)
> > 17:45:43.240285 208.133.153.54.1337 > 206.25.246.5.domain: 19488+ A? video.real.com. (32)
> > 17:45:43.420237 206.25.246.5.domain > 208.133.153.54.1337: 19488 1/0/0 (48)
> > 17:45:48.260307 208.133.153.54.1338 > 206.25.246.3.domain: 19488+ A? video.real.com. (32)
> > 17:45:48.490228 206.25.246.3.domain > 208.133.153.54.1338: 19488 1/0/0 (48)
> > 17:45:53.280388 208.133.153.54.1339 > 206.25.246.5.domain: 19488+ A? video.real.com. (32)
> > 17:45:53.460396 206.25.246.5.domain > 208.133.153.54.1339: 19488 1/0/0 (48)
> >
> > If I substitute the actual IP address in the above URL, it will
> > work just fine.
> >
> > What am I missing here?  Is ther something I need to set up in
> > addition to the files below?
> 
> No, I think this is a bug in the Linux emulation.  We've seen it with
> StarOffice as well, but only on some systems (including mine).  So
> far, nobody who has expeienced the problem has found it disturbing
> enough to fix.
> 
> Greg
> 
>