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[Rodolfo Alonso <1624648@xxxxxxxxxxxxxxxxxx>]

Closed due to inactivity. Please feel free to reopen if needed.

** Changed in: neutron
       Status: In Progress => Won't Fix

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https://bugs.launchpad.net/bugs/1624648

Title:
  Do not need run _enable_netfilter_for_bridges() for each new device

Status in neutron:
  Won't Fix

Bug description:
  For a new device, when set security group for it, function
  prepare_port_filter will be called. Then
  self._enable_netfilter_for_bridges() will be executed once, which is
  not needed every time.

      def prepare_port_filter(self, port):
          LOG.debug("Preparing device (%s) filter", port['device'])
          self._remove_chains()
          self._set_ports(port)
          self._enable_netfilter_for_bridges()
          # each security group has it own chains
          self._setup_chains()
          return self.iptables.apply()

  We could have a look at _enabled_netfilter_for_bridges first and
  decide whether to run self._enable_netfilter_for_bridges().

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