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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/1384402

Title:
  DHCP agent resync restarts all dnsmasq processes on any dhcp driver
  exception

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

Bug description:
  The sync_state/periodic_resync implementation will loop through and
  restart the dhcp process for all active networks any time there is an
  exception calling a dhcp driver function for a specific network. This
  allows a tenant who can create an unhandled exception to cause every
  dhcp process on the system to restart. On systems with lots of
  networks this can easily take longer than the default resync timeout
  leading to a system that becomes unresponsive because of the load
  continually restarting causes.

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