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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/1413111

Title:
  local variable 'existing_floating_ips' referenced before assignment in
  file agent/l3/agent.py

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

Bug description:
  step:

  1. create the the firewall when there is no outer in this tenant.
  2. create a router 
  3. delete the firewall
  4. restart the l3-agent.

  an exception emit

  =====================================

  2015-01-21 15:32:25.173 ERROR neutron.agent.l3.agent [req-f53cd6a8-094d-45d9-968c-4db962d5ecb4 None 12558d21504946d0a4bc9994409118cd] local variable 'existing_floating_ips' referenced before assignment
  2015-01-21 15:32:25.173 TRACE neutron.agent.l3.agent Traceback (most recent call last):
  2015-01-21 15:32:25.173 TRACE neutron.agent.l3.agent   File "/opt/stack/neutron/neutron/common/utils.py", line 341, in call
  2015-01-21 15:32:25.173 TRACE neutron.agent.l3.agent     return func(*args, **kwargs)
  2015-01-21 15:32:25.173 TRACE neutron.agent.l3.agent   File "/opt/stack/neutron/neutron/agent/l3/agent.py", line 566, in process_router
  2015-01-21 15:32:25.173 TRACE neutron.agent.l3.agent     self._process_external(ri)
  2015-01-21 15:32:25.173 TRACE neutron.agent.l3.agent   File "/opt/stack/neutron/neutron/agent/l3/agent.py", line 535, in _process_external
  2015-01-21 15:32:25.173 TRACE neutron.agent.l3.agent     try:
  2015-01-21 15:32:25.173 TRACE neutron.agent.l3.agent UnboundLocalError: local variable 'existing_floating_ips' referenced before assignment
  2015-01-21 15:32:25.173 TRACE neutron.agent.l3.agent
  Traceback (most recent call last):
    File "/usr/local/lib/python2.7/dist-packages/eventlet/greenpool.py", line 82, in _spawn_n_impl
      func(*args, **kwargs)
    File "/opt/stack/neutron/neutron/agent/l3/agent.py", line 1075, in _process_router_update
      self._process_router_if_compatible(router)
    File "/opt/stack/neutron/neutron/agent/l3/agent.py", line 1029, in _process_router_if_compatible
      self._process_added_router(router)
    File "/opt/stack/neutron/neutron/agent/l3/agent.py", line 1038, in _process_added_router
      self.process_router(ri)
    File "/opt/stack/neutron/neutron/common/utils.py", line 344, in call
      self.logger(e)
    File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 82, in __exit__
      six.reraise(self.type_, self.value, self.tb)
    File "/opt/stack/neutron/neutron/common/utils.py", line 341, in call
      return func(*args, **kwargs)
    File "/opt/stack/neutron/neutron/agent/l3/agent.py", line 566, in process_router
      self._process_external(ri)
    File "/opt/stack/neutron/neutron/agent/l3/agent.py", line 535, in _process_external
      try:
  UnboundLocalError: local variable 'existing_floating_ips' referenced before assignment

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