Comment 36 for bug 1494281

A workaround for emergencies :

Fix DB :
mysql --user=root
use neutron;
select * from ml2_network_segments;
update ml2_network_segments set segmentation_id = 0 where id = 'edaff05e-2e1d-47bb-99e4-08d11e702121';

Fix OVS :
ovs-vsctl show
ovs-vsctl --columns=other_config list Port tap35e898e4-ac
ovs-vsctl set Port tap35e898e4-ac other_config:segmentation_id=0

It works for me.

Please release related bug fix as soon as possible. I thinks the importance is critical, because the flat network setup not working.
Thanks