'mq=on,csum=off,gso=off,guest_tso4=off,guest_tso6=off,'
'guest_ecn=off,mrg_rxbuf={mbuf}{queue_size}'.
format(vhost_id=self._vhost_id, mac=mac,
'mq=on,csum=off,gso=off,guest_tso4=off,guest_tso6=off,'
'guest_ecn=off,mrg_rxbuf={mbuf}{queue_size}'.
format(vhost_id=self._vhost_id, mac=mac,