[Bug 616064] Re: Broken networking in kvm guests

[Brian Fallik]

Serge,

$ brctl show
bridge name	bridge id		STP enabled	interfaces
br0		8000.001a64b33b10	no		eth0
							vnet0
							vnet1
virbr0		8000.000000000000	yes		

In case it's not obvious, br0 is the bridge I manually created today.
virbr0 is (i think) the bridge created by libvirt which I had used
previously.  virbr0 was never bound to eth0 - it was used for the
'virtual network' scenario.

Attached it the output of iptables -L as of right now, but I *think*
this output may not reflect the same configuration when libvirt is
managing the virtual network.  In the case I think libvirt manipulates
the network configuration, including iptables, to support the virtual
LAN.  We're in the middle of a test build on the guest which I'd prefer
not to interrupt, but if you'd like me to run another test with the
networking switched back to virtual LAN, I can do that later today.  I
can also recapture iptables -L at that point.

brian

** Attachment added: "iptables -L"
   https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/616064/+attachment/1521218/+files/iptables_L.txt

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Broken networking in kvm guests
https://bugs.launchpad.net/bugs/616064
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