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[Sarath Menon <1285999@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

We saw this in our startup logs:

2014-02-27 16:37:07,702 (neutron.api.extensions): INFO extensions add_extension Loaded extension: nvp-qos
2014-02-27 16:37:07,702 (neutron.api.extensions): INFO extensions _load_all_extensions_from_path Loading extension file: nvp_networkgw.py
2014-02-27 16:37:07,703 (neutron.api.extensions): DEBUG extensions _check_extension Ext name: Neutron-NVP Network Gateway
2014-02-27 16:37:07,703 (neutron.api.extensions): DEBUG extensions _check_extension Ext alias: network-gateway
2014-02-27 16:37:07,704 (neutron.api.extensions): DEBUG extensions _check_extension Ext description: Connects Neutron networks with external networks at layer 2 (deprecated).
2014-02-27 16:37:07,704 (neutron.api.extensions): DEBUG extensions _check_extension Ext namespace: http://docs.openstack.org/ext/neutron/network-gateway/api/v1.0
2014-02-27 16:37:07,705 (neutron.api.extensions): DEBUG extensions _check_extension Ext updated: 2014-01-01T00:00:00-00:00
2014-02-27 16:37:07,705 (neutron.api.extensions): INFO extensions add_extension Loaded extension: network-gateway
2014-02-27 16:37:07,705 (neutron.api.extensions): WARNING extensions _load_all_extensions_from_path Extension file nvp_networkgw.py wasn't loaded due to Found duplicate extension: network-gateway

There are two neutron servers load balanced, the other server did not
show this. While running tempest against them, it was failing because
both servers advertised different names for their network-gateway
extension. Restarting neutron on the bad server did not show this
behavior.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1285999

Title:
  neutron's extension loader behaviour is not consistent

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  We saw this in our startup logs:

  2014-02-27 16:37:07,702 (neutron.api.extensions): INFO extensions add_extension Loaded extension: nvp-qos
  2014-02-27 16:37:07,702 (neutron.api.extensions): INFO extensions _load_all_extensions_from_path Loading extension file: nvp_networkgw.py
  2014-02-27 16:37:07,703 (neutron.api.extensions): DEBUG extensions _check_extension Ext name: Neutron-NVP Network Gateway
  2014-02-27 16:37:07,703 (neutron.api.extensions): DEBUG extensions _check_extension Ext alias: network-gateway
  2014-02-27 16:37:07,704 (neutron.api.extensions): DEBUG extensions _check_extension Ext description: Connects Neutron networks with external networks at layer 2 (deprecated).
  2014-02-27 16:37:07,704 (neutron.api.extensions): DEBUG extensions _check_extension Ext namespace: http://docs.openstack.org/ext/neutron/network-gateway/api/v1.0
  2014-02-27 16:37:07,705 (neutron.api.extensions): DEBUG extensions _check_extension Ext updated: 2014-01-01T00:00:00-00:00
  2014-02-27 16:37:07,705 (neutron.api.extensions): INFO extensions add_extension Loaded extension: network-gateway
  2014-02-27 16:37:07,705 (neutron.api.extensions): WARNING extensions _load_all_extensions_from_path Extension file nvp_networkgw.py wasn't loaded due to Found duplicate extension: network-gateway

  There are two neutron servers load balanced, the other server did not
  show this. While running tempest against them, it was failing because
  both servers advertised different names for their network-gateway
  extension. Restarting neutron on the bad server did not show this
  behavior.

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