Comment 9 for bug 2057942

I'm seeing the same on 2023.2:

2024-04-23 18:50:01.010 30 ERROR futurist.periodics [None req-e70cb2bd-b2bf-409e-baa0-bea4c7a85bfb - - - - - -] Failed to call immediate 'neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb.maintenance.DBInconsistenciesPeriodics.add_gw_port_info_to_logical_router_port' (it runs every 600.00 seconds): KeyError: 'external_gateways'
2024-04-23 18:50:01.010 30 ERROR futurist.periodics Traceback (most recent call last):
2024-04-23 18:50:01.010 30 ERROR futurist.periodics File "/var/lib/kolla/venv/lib64/python3.9/site-packages/futurist/periodics.py", line 290, in run
2024-04-23 18:50:01.010 30 ERROR futurist.periodics work()
2024-04-23 18:50:01.010 30 ERROR futurist.periodics File "/var/lib/kolla/venv/lib64/python3.9/site-packages/futurist/periodics.py", line 64, in __call__
2024-04-23 18:50:01.010 30 ERROR futurist.periodics return self.callback(*self.args, **self.kwargs)
2024-04-23 18:50:01.010 30 ERROR futurist.periodics File "/var/lib/kolla/venv/lib64/python3.9/site-packages/futurist/periodics.py", line 178, in decorator
2024-04-23 18:50:01.010 30 ERROR futurist.periodics return f(*args, **kwargs)
2024-04-23 18:50:01.010 30 ERROR futurist.periodics File "/var/lib/kolla/venv/lib64/python3.9/site-packages/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/maintenance.py", line 977, in add_gw_port_info_to_logical_router_port
2024-04-23 18:50:01.010 30 ERROR futurist.periodics ext_gw['network_id'] for ext_gw in router['external_gateways']]
2024-04-23 18:50:01.010 30 ERROR futurist.periodics KeyError: 'external_gateways'

Using Kolla images built today (from latest stable/2023.2 Neutron code tarballs) and OVN 23.09