etsysPimExtTibMgrRegProbeTime 1.3.6.1.4.1.5624.1.2.67.1.2.8.1.15

The time to wait for a PIM Register-Stop message after sending a PIM Null-Register message, before resuming Register-encapsulation at a downstream router. This object corresponds to the 'Register_Probe_Time' defined in PIM-SM [RFC 4601].