I have a same problem under Ubuntu 14.04 and Openstack Kilo from Ubuntu
Cloud repo.
Part of the log file:
2015-07-21 12:42:52.154 11311 ERROR neutron.agent.linux.utils [-]
Command: ['sudo', '/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf',
'ip', 'netns', 'exec', 'qrouter-e03c565d-9667-
I had a same problem and I found this solutions as workaround, during I
can not receive the script with the new release ( temporary solution).
Solution source: https://github.com/MarouenMechtri/OpenStack-Heat-
Installation/blob/master/OpenStack-Heat-Installation.rst
I modified the it a little bit