This read-only Gauge32 reports the count of IP packets from this ComPort dropped due to destination-address filtering during the previous 15-minute period, per the description. It gives the admin a finalized historical count of blocked destination attempts for that device in the prior interval. For example, an admin reviewing a restricted kiosk's access logs checks hcxStuIpPrevDstFiltStat over several intervals to see if unauthorized access attempts are increasing.