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[Doug Hellmann <doug@xxxxxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1509959

Title:
  Stale DHCP ports remain in DHCP namespace

Status in neutron:
  Fix Released

Bug description:
  Consider the following case: 2 or more DHCP agents host a network, then for any reason they go offline.
  both (or more) DHCP ports become reserved. If then DHCP agents start or revive nearly at the same time, they may fetch different reserved port that they have owned previously.

  At the same time, previous DHCP port remains in the namespace and is not getting cleaned up.
  As a result it is possible to get two hosts with the same DHCP namespace having a pair of port which duplicate the same ports on other host.

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