Sounds like both guest and host have the same IP and whenever one makes
an ARP broadcast it will start to receive traffic from the remote end.

Check to see if the IP on the guest is the same as the host, if so,
change it.

--James

-----Original Message-----
From: Fredrik Bengtsson [mailto:[email protected]] 
Sent: Thursday, September 15, 2011 8:15 AM
To: [email protected]
Subject: [VBox-users] Host and guest competing for bridged network

I'm running a Windows Server 2008 R2 guest under Windows 7 64-bit
with VirtualBox 4.1.2. Network is set to bridged, using my
computer's wifi connection (Centrino Advanced-N 6205). Virtualization
extensions are enabled in host BIOS.

When the guest is turned off, all traffic from the host to other
machines works fine and always has.

When the guest is running, the host and guest seem to "compete"
for traffic. If I start a cmd window in both host and guest and
start an identical infinite "ping /t <othermachine>" in them, it
is perfectly clear that first the host is able to ping fine but
the guest consistently gets "Request timed out", and 30 seconds
later the host starts getting "Request timed out" but the guest
starts to get the packets flowing. And then they switch back
like 20 seconds later, and so on and so forth. At no time are
they able to transmit at the same time. The time between switches 
seem to be completely random, but fairly short (less than a minute
on average).

Any ideas what may be causing this? It's infuriating, since this
keeps killing remote desktop connections to the guest which we are
relying for in a current project.

Thanks,
/Fredrik


------------------------------------------------------------------------
------
Doing More with Less: The Next Generation Virtual Desktop 
What are the key obstacles that have prevented many mid-market
businesses
from deploying virtual desktops?   How do next-generation virtual
desktops
provide companies an easier-to-deploy, easier-to-manage and more
affordable
virtual desktop model.http://www.accelacomm.com/jaw/sfnl/114/51426474/
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Doing More with Less: The Next Generation Virtual Desktop 
What are the key obstacles that have prevented many mid-market businesses
from deploying virtual desktops?   How do next-generation virtual desktops
provide companies an easier-to-deploy, easier-to-manage and more affordable
virtual desktop model.http://www.accelacomm.com/jaw/sfnl/114/51426474/
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