Comment 3 for bug 499491
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| Thierry Carrez (ttx) wrote Re: [1.6.2] Fails to boot an instance: Failed to add tap interface to bridge 'br0' | #3 |
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0e1f616
(Get the code!)
Some help from upstream:
"The log message indicates that either the interface 'br0' does not exist on your node (i.e. the node has not yet been configured with a bridge named 'br0' as it's primary interface), or that libvirt/kvm is unable to attach the tap device that KVM creates upon VM start to that bridge (this can sometimes be caused by apparmor getting in the way). I believe the right tactic is to first check for bridge existence, then start inspecting apparmor/