/* Drop frames for ports that STP wants entirely killed (both for
* forwarding and for learning). Later, after we do learning, we'll drop
- * the frames that STP doesn't want to do learning on. */
+ * the frames that STP wants to do learning but not forwarding on. */
if (in_port->stp_state & (STP_LISTENING | STP_BLOCKING)) {
printf("drop on %s: %s (%x)\n",
in_port->name, stp_state_name(in_port->stp_state),