Comment 1 for bug 1799484

Small update:
in fact the tap interface exists, it's managed by OVS, and not shown by `ip a' command:

[root@undercloud log]# ovs-vsctl list-ports br-int
int-br-ctlplane
tap936f789b-55

I suspect an issue accessing to the openvswith socket - not sure though. Nothing seems to raise an error with that so far.