The value of vRtrPimNgAFIfOperDRPriority indicates the priority
of the current DR on a LAN. This value is different from the
configured PIM DR priority and is the result of the PIM DR
election process.
The value of vRtrPimNgAFIfOperDRPriority will be 0 if the interface
is operationally down and DR election has not taken place.