Comment 30 for bug 1494281

When I create a flat network and bind an instance to it, I get the following entry in ovs-vsctl ports table:

_uuid : 26edb57f-5879-4424-a064-444d5e2d123e
bond_active_slave : []
bond_downdelay : 0
bond_fake_iface : false
bond_mode : []
bond_updelay : 0
external_ids : {}
fake_bridge : false
interfaces : [7685f978-6c33-47c4-b777-f86f8d6735d6]
lacp : []
mac : []
name : "qvoded7af94-bb"
other_config : {net_uuid="ecb6c0e8-e2e9-4c38-8a2e-a51269dff5ee", network_type=flat, physical_network="eth0", segmentation_id=None}
qos : []
statistics : {}
status : {}
tag : 2
trunks : []
vlan_mode : []

Note segmentation_id=='None'.

Hence the failure.