Comment 2 for bug 1470568

Able to reproduce it with SR-IOV ports.
Steps:
1. neutron net-create my-private-network
2. Create network with DHCP enabled (enabled by default): neutron subnet-create --ip_version 4 --gateway 10.0.6.1 --name my-private-subnet my-private-network 10.0.6.0/24
3. Create "direct" port: neutron port-create --vnic-type direct my-private-network
4. Boot an instance: nova boot --flavor m1.nano --image cirros-0.3.4-x86_64-uec --nic port-id=<port_id> test

Result:
* There is VLAN profile and VLAN added to vNIC
* There is no port profile created.
* In q-svc log you can find "... Manager network driver found an entry that already exists ..."