Comment 1 for bug 1883244

I can confirm this behaviour on a deployment using VLANs on the bond0 interface to separate management and provider traffic; in our case, we're trying to map br-ex to bond0.801, and no br-ex bridge is created.

Note that the workaround of using MAC addresses instead does not help us, as bond0 and it's VLAN sub-interfaces all have the same MAC address.