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[Doug Hellmann <doug@xxxxxxxxxxxxxxxx>]

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

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

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https://bugs.launchpad.net/bugs/1469615

Title:
  dhcp service is unavailable if we delete dhcp port

Status in neutron:
  Fix Released

Bug description:
  if we delete the dhcp port,  the dhcp service for corresponding
  network is unavailable, because dhcp port is deleted from neutron-
  server, but the TAP device on network node is not deleted, and the tag
  for this TAP is dead vlan 4095,  and the dhcp service can' t be
  recovered.

  reproduce steps:
  1. create network, subnet
  2. delete the dhcp port in this network

  I found the TAP device on network node was not deleted, but its tag is
  4095

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