Comment 4 for bug 1960319

I am hitting this on focal-ussuri on a neutron-server:

2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event [-] Unexpected exception in notify_loop: FileNotFoundError: [Errno 2] No such file or directory: 'ovsdb-client'
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event Traceback (most recent call last):
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event File "/usr/lib/python3/dist-packages/ovsdbapp/event.py", line 143, in notify_loop
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event match.run(event, row, updates)
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event File "/usr/lib/python3/dist-packages/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovsdb_monitor.py", line 434, in run
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event self.driver.delete_mac_binding_entries(row.external_ip)
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event File "/usr/lib/python3/dist-packages/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py", line 1068, in delete_mac_binding_entries
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event return processutils.execute(*cmd,
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event File "/usr/lib/python3/dist-packages/oslo_concurrency/processutils.py", line 383, in execute
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event obj = subprocess.Popen(cmd,
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event File "/usr/lib/python3/dist-packages/eventlet/green/subprocess.py", line 58, in __init__
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event subprocess_orig.Popen.__init__(self, args, 0, *argss, **kwds)
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event File "/usr/lib/python3.8/subprocess.py", line 858, in __init__
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event self._execute_child(args, executable, preexec_fn, close_fds,
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event File "/usr/lib/python3.8/subprocess.py", line 1704, in _execute_child
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event raise child_exception_type(errno_num, err_msg, err_filename)
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event FileNotFoundError: [Errno 2] No such file or directory: 'ovsdb-client'
2022-11-15 15:08:46.198 75085 ERROR ovsdbapp.event

# apt-cache policy openvswitch-common
openvswitch-common:
  Installed: (none)
  Candidate: 2.13.8-0ubuntu1
  Version table:
     2.13.8-0ubuntu1 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
     2.13.3-0ubuntu0.20.04.2 500
        500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
     2.13.0-0ubuntu1 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu focal/main amd64 Packages

Should we backport?