Re: [Qemu-devel] network fails on windows

[Julian Seward]

I agree, there is something funny to do with networking with
WinXP/Win2K guests.  I use user-mode networking with the
current cvs head.  Sometimes XP is able to make a connection
to the outside world; yet if I just leave the guest machine
idle and try an hour later then it can't; try again 5 minutes
later and it's OK again.  It's very frustrating.  I have no idea
what's happening.  Also, even when it can communicate with 
other machines on my local network, it's really slow.

Wierd thing is, running Red Hat 7.3 as a guest, with user-mode
networking, the guest's connections to the outside world are
both reliable and fast.  Which corresponds with Matthias' observation.

Any ideas?  Has anyone else got any related observations?

J

On Saturday 17 July 2004 16:07, Matthias Jung wrote:
> Hi,
> i have found a bug: for long I was not able to use the network part of
> qemu, I tried almost everything to get a guest Windows LAN access, nothing
> worked. Neither tun nor user-net was working, no matter how hard i tried,
> and only Windows seemed to have this problem, linux guests always performed
> fine. -isa didnt help either.
> I was just on the verge of giving up until i tried one last thing:
> I switched the mac address parameter. Til then I had used the mac
> a3:b2:23:54:7e:cf which is a valid mac and windows did detect the interface
> without flaws, but no network access was possible.
> With 00:ff:7f:fc:36:d2 it suddenly worked, I only can imagine a bug in the
> ne2000 windows driver, or in windows (95,98,2000 tested) itself, not
> allowing such a mac.
> I had no mac collision at any time!
>
> happy that its finally working,
>
> Matthias Jung
>
>
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