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RE: [Xen-users] latest GPLPV drivers and microsoft.com

To: "Fajar A. Nugraha" <fajar@xxxxxxxxx>, "Ian Tobin" <itobin@xxxxxxxxxxxxx>
Subject: RE: [Xen-users] latest GPLPV drivers and microsoft.com
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Sat, 5 Sep 2009 10:55:04 +1000
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Thread-topic: [Xen-users] latest GPLPV drivers and microsoft.com
> >
> > Microsoft Windows [Version 5.2.3790]
> > (C) Copyright 1985-2003 Microsoft Corp.
> >
> > C:\Documents and Settings\support>ping www.microsoft.com
> > Ping request could not find host www.microsoft.com. Please check the
> and try again.
> Okay, so nslookup CAN find the host ( but ping CAN NOT
> find the host. The only time I have seen something like this is on
> malware-infected servers.
> Either way, it's not Xen issue anymore. Xen's networking can pass UDP
> DNS traffic just fine (nslookup got the correct result). You might
> have better luck asking MS guys why nslookup can succeed while ping
> can't find the host, and how to fix the problem.

Not so fast there... I think nslookup will still default to searching
for an A record, but I'm pretty sure that ping will first look for an
AAAA record under Vista and above.

Try doing 'ping -4 www.microsoft.com' and see if that makes a
difference. I certainly get 'Ping request could not find host
www.microsoft.com. Please check the name and try again.' When I try ping
-6, although the default behaviour _should- be to try ipv6 and then fall
back to ipv4...

If that works, and you really don't use ipv6 for all, disable it as a
protocol on the network adapter. Maybe you already did this before but
then installed gplpv which installs a new adapter and has ipv6 enabled
again? Or maybe you want to use ipv6 and for some reason it doesn't work
with gplpv... I haven't tested that very much.


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