Comment 2 for bug 1549183

Standalone network plugin has two options:
- standalone_network_plugin_network_type
- standalone_network_plugin_segmentation_id

So, statement in bug description is not fully true. It is None by default, that's all. But it can be 'vlan' and can have 'segmentation id'.

So, if your driver expects 'vlan' always, then it is configuration error.