'Return an instance of the configured external DNS driver.'

@classmethod
def get_instance(cls):

    external_dns_driver_name = cfg.CONF.external_dns_driver
    mgr = manager.NeutronManager
    LOG.debug('Loading    external    dns    driver:    %s', external_dns_driver_name)
    driver_class = mgr.load_class_for_provider('neutron.services.external_dns_drivers', external_dns_driver_name)
    return driver_class()
