Hi all,

I have Nova all set up on a single server and am able to start/stop/delete VM 
instances no problem. I have a bridge at br100 which sits on eth1 and is not 
connected to anything. eth0 is connected to the Internet. Before installing 
Openstack I was using KVM and virsh to manage my VMs. In order to do the 
Openstack install with fewer working parts, I brought down all KVM instances 
and deleted the br0 bridge they were using.

Everything works beautifully with respect to nova-network. Since I can't easily 
port my KVM instances to Openstack, I wanted to start them up again under 
virsh. I recreated the br0 bridge as it was before. So far so good. I can start 
my "legacy" VMs and all works as expected. There's only one issue, and I don't 
even know if it's important.

Before starting a Nova VM eth0 has no IP, which is expected as it's being 
covered by br0. But when I start one of the Nova VMs that has a floating IP, 
eth0 gains its IP! Everything seems to continue working, but it doesn't make 
sense to me.

I don't know if this is expected behaviour or I simply have things configured 
wrong. Since it all still works I'm not overly concerned, but it does bug me. 
If anyone has insight into this I would be grateful.

Thanks,
Daniel
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