Comment 4 for bug 1815112

root@node-1:~# grep 'self._monitor.start(block=True)' /usr/lib/python2.7/dist-packages/neutron/agent/linux/polling.py
        self._monitor.start(block=True)
root@node-1:~# apt-cache policy python-neutron
python-neutron:
  Installed: 2:8.4.0-2~u14.04+mos30
  Candidate: 2:8.4.0-2~u14.04+mos30
  Version table:
 *** 2:8.4.0-2~u14.04+mos30 0
       1050 http://mirror.seed-us1.fuel-infra.org/mos-repos/ubuntu/snapshots/9.0-2019-04-02-072321/ mos9.0-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     2:8.4.0-2~u14.04+mos29 0
       1050 http://mirror.seed-us1.fuel-infra.org/mos-repos/ubuntu/snapshots/9.0-2019-04-02-072321/ mos9.0-updates/main amd64 Packages
       1050 http://mirror.fuel-infra.org/mos-repos/ubuntu/9.2/ mos9.0-updates/main amd64 Packages
     2:8.1.1-1~u14.04+mos21 0
       1050 http://10.109.0.2:8080/mitaka-9.0/ubuntu/x86_64/ mos9.0/main amd64 Packages
     1:2014.1.5-0ubuntu8 0
       1001 http://mirror.seed-us1.fuel-infra.org/pkgs/snapshots/ubuntu-2019-02-06-000001/ trusty-updates/main amd64 Packages
     1:2014.1.3-0ubuntu1.1 0
       1001 http://mirror.seed-us1.fuel-infra.org/pkgs/snapshots/ubuntu-2019-02-06-000001/ trusty-security/main amd64 Packages
     1:2014.1-0ubuntu1 0
       1001 http://mirror.seed-us1.fuel-infra.org/pkgs/snapshots/ubuntu-2019-02-06-000001/ trusty/main amd64 Packages