This read-only counter reports the number of PPPoE Active Discovery Request (PADR) packets that were discarded rather than answered with a PADS. An admin watches this for subscribers failing at the second stage of PPPoE session setup, after successfully receiving a PADO offer, which often points to a resource or policy issue distinct from the earlier PADI-rejection cause. For example, a spike in usrPPPoENumberPADRRejected without a corresponding spike in usrPPPoENumberPADIRejected suggests sessions are failing specifically at the request-confirmation stage rather than at initial discovery.