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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/1177572

Title:
  List networks operation reloads external network info for each network

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

Bug description:
  All the plugins implementing the l3 mixin invoke the extend_network_dict_l3 method for each network in get_networks
  The implementation of the above method in the mixin executes another query in the database.

  As a result, get_networks results in N+1 queries on the db. This is
  not great news for working at scale, since this could be easily
  improved.

  This in principle is the same issue as Bug 1174111.
  The fix should leverage the approach used for fixing that bug.

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