Alon,

        We recently ran an Ubuntu 11.10 VM which was installed with VirtIO NIC 
driver. The VirtIO net driver came from  the Ubuntu's default package. The VM 
we installed was configured as a bridge mode. When we ran the Iperf test   
against the VM, the network interface of the VM was fairly unstable. Sometimes, 
the network interface of the    VM could not receive the packets and we needed 
to bright the network interface down and up in order to  make it work. After we 
replaced the VirtIo Net driver with ne2k driver and it worked quite stably now.

        We know that the performance of virtIO is much better than ne2k in 
virtual environment. We would like to use    virtio driver instead. If this is 
the virtio driver issue, can you tell us where to get the latest virtIO       
driver for Ubuntu VM? Otherwise, tell us how to make the virtio net driver work 
in Ubuntu VM if you have ever   had similar issue before.

        Thanks.
        
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