'Handle the network.update.end notification event.'

@_wait_if_syncing
def network_update_end(self, context, payload):

    network_id = payload['network']['id']
    with _net_lock(network_id):
        if payload['network']['admin_state_up']:
            self.enable_dhcp_helper(network_id)
        else:
            self.disable_dhcp_helper(network_id)
