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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: neutron
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1183285

Title:
  Invalid error status code returned by nicira network-gateway API
  extension

Status in OpenStack Neutron (virtual network service):
  Fix Released

Bug description:
  The following operations:

  PUT /network-gateways/<gw_id>/connect
  PUT /network-gateway/<gw_id>/disconnect

  Accept two optional parameters:
  - segmentation_type
  - segmentation_id

  Default values for these parameters are not set, nor their are sanity checked, in the API server.
  This means that setting an invalid value will cause a 500 error (raised by the underlyng NVP backend)  rather than the expected 400.

  Particularly interesting is the case in which they are missing. the
  backend interprets 'correctly' them in the sense that does a 'flat'
  connection with vlan ID 0, but Null values are stored in the quantum
  DB. The funny consequence is that this then breaks the disconnect
  feature as the connection record with Null values will be returned by
  any query, leading to a 'MultipleGatewayConnectionFound' to be raised
  in any case.

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