This read-only counter reports the total number of PPPoE Active Discovery Terminate (PADT) packets exchanged, which are used to tear down an established PPPoE session from either end. An admin watches this counter's growth rate to gauge how often PPPoE sessions are being cleanly terminated versus dropped through other means like idle timeout. For example, a sudden spike in usrPPPoENumberPADT coinciding with a drop in usrPPPoENumberSessions indicates a mass, orderly disconnection of subscriber sessions rather than a crash or timeout-driven loss.