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

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

** Changed in: neutron
    Milestone: None => havana-2

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https://bugs.launchpad.net/bugs/1191768

Title:
  Duplicate entries in the hosts file

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

Bug description:
  When Quantum service is underload there are cases when the hosts file
  has duplicate entries:

  There are cases when IP addresses may appear more than once in the hosts file, for example:
  fa:16:3e:16:b1:62,10-0-0-3.openstacklocal,10.0.0.3
  fa:16:3e:55:86:b2,10-0-0-1.openstacklocal,10.0.0.1
  fa:16:3e:f9:ad:20,10-0-0-15.openstacklocal,10.0.0.15
  fa:16:3e:d6:94:39,10-0-0-13.openstacklocal,10.0.0.13
  fa:16:3e:7d:42:32,10-0-0-15.openstacklocal,10.0.0.15
  fa:16:3e:f7:86:a6,10-0-0-16.openstacklocal,10.0.0.16
  fa:16:3e:a8:d9:2e,10-0-0-19.openstacklocal,10.0.0.19

  This is due to the fact that the service thinks that the DHCP agent is
  down and it does not send a deleteion message. The cause is actually
  due to the agent being unable to send the state message to the
  service.

  This happens when using qpid as the message broker and deleting a
  considerable amount of VM's at one time

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