On Tue, 19 Mar 2019 14:38:06 +0200
Liran Alon <liran.a...@oracle.com> wrote:

> b.3) cloud-init: If configured to perform network-configuration, it attempts 
> to configure all available netdevs. It should avoid however doing so on 
> net-failover slaves.
> (Microsoft has handled this by adding a mechanism in cloud-init to blacklist 
> a netdev from being configured in case it is owned by a specific PCI driver. 
> Specifically, they blacklist Mellanox VF driver. However, this technique 
> doesn’t work for the net-failover mechanism because both the net-failover 
> netdev and the virtio-net netdev are owned by the virtio-net PCI driver).

Cloud-init should really just ignore all devices that have a master device.
That would have been more general, and safer for other use cases.
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