Hello:

I've seen this behavior in OVS 2.12. Previous versions work well (2.11
and 2.10).

I detected this problem using Neutron (master), OVS 2.12 and OVS
firewall. The firewall flows are added to the DB using "--bundle". This
requires OF14. Because this protocol is added after the bridge is
created, it does not work.

But if the protocol is added in the same transaction of the creation
[1], then the "--bundle" add-flows commands work.

Regards.

[1]
https://github.com/openstack/neutron/blob/4051e0b19dc9f318c2e0dd7c60eaa2c46536ad03/neutron/agent/common/ovs_lib.py#L286-L302

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https://bugs.launchpad.net/bugs/1852221

Title:
  ovsdb-server needs to be restarted after adding protocols to bridges

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