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[Assaf Muller <amuller@xxxxxxxxxx>]

Added TripleO - br_filter kernel module should be loaded by installers.

** Also affects: tripleo
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1622914

Title:
  agent traces about bridge-nf-call sysctl values missing

Status in devstack:
  New
Status in neutron:
  In Progress
Status in tripleo:
  New

Bug description:
  spotted in gate:

  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent Traceback (most recent call last):
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent   File "/opt/stack/new/neutron/neutron/plugins/ml2/drivers/agent/_common_agent.py", line 450, in daemon_loop
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent     sync = self.process_network_devices(device_info)
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent   File "/usr/local/lib/python2.7/dist-packages/osprofiler/profiler.py", line 154, in wrapper
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent     return f(*args, **kwargs)
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent   File "/opt/stack/new/neutron/neutron/plugins/ml2/drivers/agent/_common_agent.py", line 200, in process_network_devices
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent     device_info.get('updated'))
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent   File "/opt/stack/new/neutron/neutron/agent/securitygroups_rpc.py", line 265, in setup_port_filters
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent     self.prepare_devices_filter(new_devices)
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent   File "/opt/stack/new/neutron/neutron/agent/securitygroups_rpc.py", line 130, in decorated_function
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent     *args, **kwargs)
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent   File "/opt/stack/new/neutron/neutron/agent/securitygroups_rpc.py", line 138, in prepare_devices_filter
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent     self._apply_port_filter(device_ids)
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent   File "/opt/stack/new/neutron/neutron/agent/securitygroups_rpc.py", line 163, in _apply_port_filter
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent     self.firewall.prepare_port_filter(device)
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent   File "/opt/stack/new/neutron/neutron/agent/linux/iptables_firewall.py", line 170, in prepare_port_filter
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent     self._enable_netfilter_for_bridges()
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent   File "/opt/stack/new/neutron/neutron/agent/linux/iptables_firewall.py", line 114, in _enable_netfilter_for_bridges
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent     run_as_root=True)
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent   File "/opt/stack/new/neutron/neutron/agent/linux/utils.py", line 138, in execute
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent     raise RuntimeError(msg)
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent RuntimeError: Exit code: 255; Stdin: ; Stdout: ; Stderr: sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-arptables: No such file or directory
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent 
  2016-09-13 07:37:33.437 13401 ERROR neutron.plugins.ml2.drivers.agent._common_agent

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