neutron/releasenotes/notes/ovsdb-native-by-default-38835d6963592396.yaml

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---
prelude: >
Prior to Newton, the default option for 'ovsdb_interface'
was 'vsctl'. In Newton 'ovsdb_interface' defaults to
'native'. This change switches the way of communication
with OVSDB from the ovs-vsctl tool to Open vSwitch python
api to improve out-of-the-box performance for typical
deployments.
upgrade:
- To keep the old default value use 'ovsdb_interface = vsctl'
in '[ovs]' section of openvswitch_agent.ini
(common path '/etc/neutron/plugins/ml2/openvswitch_agent.ini')
if there is a separate openvswitch agent configuration file;
otherwise apply changes mentioned above to ml2_conf.ini
(common path '/etc/neutron/plugins/ml2/ml2_conf.ini').