'Notify dvr mac address updates.'

def dvr_mac_address_update(self, context, dvr_macs):

    if (not dvr_macs):
        return
    cctxt = self.client.prepare(topic=self._get_dvr_update_topic(), version=self.DVR_RPC_VERSION, fanout=True)
    cctxt.cast(context, 'dvr_mac_address_update', dvr_macs=dvr_macs)
