I just faced the same issue on OpenStack with OVN 22.03 during upgrade from Victoria to Focal.
The output of `apt policy` is below
```
$ juju run -a neutron-api -- "apt policy python3-ovsdbapp"
- Stderr: |2+
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
I can confirm that workaround helped
```
juju run -a neutron-api 'sudo python3 -m pip install ovsdbapp==1.9.4'
juju run -a neutron-api 'sudo service neutron-* restart'
```
Hi,
I just faced the same issue on OpenStack with OVN 22.03 during upgrade from Victoria to Focal.
The output of `apt policy` is below
```
$ juju run -a neutron-api -- "apt policy python3-ovsdbapp"
- Stderr: |2+
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
Stdout: | ovsdbapp: cloud0 cloud0 cloud0 500 ubuntu- cloud.archive. canonical. com/ubuntu focal-updates/ wallaby/ main amd64 Packages dpkg/status
1.1.0- 0ubuntu2 500 archive. ubuntu. com/ubuntu focal-updates/main amd64 Packages
1.1.0- 0ubuntu1 500 archive. ubuntu. com/ubuntu focal/main amd64 Packages
python3-
Installed: 1.9.0-0ubuntu1~
Candidate: 1.9.0-0ubuntu1~
Version table:
*** 1.9.0-0ubuntu1~
500 http://
100 /var/lib/
500 http://
500 http://
UnitId: neutron-api/0
- Stderr: |2+
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
Stdout: | ovsdbapp: cloud0 cloud0 cloud0 500 ubuntu- cloud.archive. canonical. com/ubuntu focal-updates/ wallaby/ main amd64 Packages dpkg/status
1.1.0- 0ubuntu2 500 archive. ubuntu. com/ubuntu focal-updates/main amd64 Packages
1.1.0- 0ubuntu1 500 archive. ubuntu. com/ubuntu focal/main amd64 Packages
python3-
Installed: 1.9.0-0ubuntu1~
Candidate: 1.9.0-0ubuntu1~
Version table:
*** 1.9.0-0ubuntu1~
500 http://
100 /var/lib/
500 http://
500 http://
UnitId: neutron-api/1
- Stderr: |2+
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
Stdout: | ovsdbapp: cloud0 cloud0 cloud0 500 ubuntu- cloud.archive. canonical. com/ubuntu focal-updates/ wallaby/ main amd64 Packages dpkg/status
1.1.0- 0ubuntu2 500 archive. ubuntu. com/ubuntu focal-updates/main amd64 Packages
1.1.0- 0ubuntu1 500 archive. ubuntu. com/ubuntu focal/main amd64 Packages
python3-
Installed: 1.9.0-0ubuntu1~
Candidate: 1.9.0-0ubuntu1~
Version table:
*** 1.9.0-0ubuntu1~
500 http://
100 /var/lib/
500 http://
500 http://
UnitId: neutron-api/2
```
I can confirm that workaround helped
```
juju run -a neutron-api 'sudo python3 -m pip install ovsdbapp==1.9.4'
juju run -a neutron-api 'sudo service neutron-* restart'
```