[kwlug-disc] Networking on libvirt vs. VirtualBox

[Khalid Baheyeldin]

On VirtualBox, I was able as non-root to get bridged networking by doing:

vboxmanage createvm --name p1 --ostype Ubuntu_64 --register
vboxmanage modifyvm p1  ... --nic1 bridged --bridgeadapter1 eth0 --nictype1
82543GC

And that provided me functional two-way networking, assigning a new IP
address from the router, and allows incoming and outgoing networking
transparently.

On KVM, I did:

virt-install --name p1 --ram 512 --disk path=~/p.img,size=2 --cdrom
./media/precise64/ubuntu-12.04.4-server-amd64.iso --boot cdrom --network
bridge=eth0

That would not work because it requires root (VirtualBox worked without
sudo).

So, I need to use sudo before that command. But when I do this, I get the
error:

ERROR    Unable to add bridge eth0 port vnet0: Operation not supported

Googling for that error suggests that this command should fix it:

virsh iface-bridge eth0 br0

But it does not work, with or without sudo, with the following error:

error: failed to get interface 'eth0'
error: this function is not supported by the connection driver:
virInterfaceLookupByName

So, the question is, using libvirt and kvm, how does one get bridged
networking to work?
-- 
Khalid M. Baheyeldin
2bits.com, Inc.
Fast Reliable Drupal
Drupal optimization, development, customization and consulting.
Simplicity is prerequisite for reliability. --  Edsger W.Dijkstra
Simplicity is the ultimate sophistication. --   Leonardo da Vinci
For every complex problem, there is an answer that is clear, simple, and
wrong." -- H.L. Mencken
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