During the failover of a STANDALONE IPv6 load balancer, the AdminDownPort task is executed but fails (silently).
https://opendev.org/openstack/octavia/src/commit/5ce85105c9b9211df9f2d88c8f1f543120eabaf4/octavia/controller/worker/v2/tasks/network_tasks.py#L1060-L1074
It sets 'admin_state_up' to False for the VRRP port and waits for its 'status' to be DOWN, but the status is always ACTIVE.
The function contains an active loop and it takes 15 sec to exit it, during these 15 seconds the VIP of the load balancer is not reachable.
Aug 29 06:16:51 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.common.base_taskflow [-] Task 'octavia-failover-loadbalancer-flow-admin-down-port' (70413951-e49b-425f-951e-ec1f43dc8065) transitioned into state 'RUNNING' from state 'PENDING' {{(pid=1344575) _task_receiver /opt/stack/taskflow/taskflow/listeners/logging.py:190}}
Aug 29 06:16:51 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.network.drivers.neutron.base [-] Neutron extension security-group found enabled {{(pid=1344575) _check_extension_enabled /opt/stack/octavia/octavia/network/drivers/neutron/base.py:61}}
Aug 29 06:16:51 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.network.drivers.neutron.base [-] Neutron extension dns-integration found enabled {{(pid=1344575) _check_extension_enabled /opt/stack/octavia/octavia/network/drivers/neutron/base.py:61}}
Aug 29 06:16:51 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.network.drivers.neutron.base [-] Neutron extension qos found enabled {{(pid=1344575) _check_extension_enabled /opt/stack/octavia/octavia/network/drivers/neutron/base.py:61}}
Aug 29 06:16:51 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.network.drivers.neutron.base [-] Neutron extension allowed-address-pairs found enabled {{(pid=1344575) _check_extension_enabled /opt/stack/octavia/octavia/network/drivers/neutron/base.py:61}}
Aug 29 06:16:51 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:16:52 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:16:53 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:16:54 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:16:55 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:16:56 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:16:57 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:16:58 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:16:59 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:17:00 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:17:01 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:17:02 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:17:03 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:17:04 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:17:05 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 is ACTIVE instead of DOWN, waiting. {{(pid=1344575) execute /opt/stack/octavia/octavia/controller/worker/v2/tasks/network_tasks.py:1070}}
Aug 29 06:17:06 gthiemon-devstack octavia-worker[1344575]: ERROR octavia.controller.worker.v2.tasks.network_tasks [-] Port ba7be21b-f782-4f10-98a2-cb9b1b8752b5 failed to go DOWN. Port status is still ACTIVE. Ignoring and continuing.
Aug 29 06:17:06 gthiemon-devstack octavia-worker[1344575]: DEBUG octavia.common.base_taskflow [-] Task 'octavia-failover-loadbalancer-flow-admin-down-port' (70413951-e49b-425f-951e-ec1f43dc8065) transitioned into state 'SUCCESS' from state 'RUNNING' with result 'None' {{(pid=1344575) _task_receiver /opt/stack/taskflow/taskflow/listeners/logging.py:178}}
After further investigations, the request is correctly sent but neutron doesn't update the status of the ports to DOWN when they are disabled (tested manually with the CLI).
This is a bug in ML2/OVN, reported to neutron: https:/