hwPimStarGRpfRoutePrefixLength 1.3.6.1.4.1.2011.5.25.149.4.1.4.1.18

The prefix length which when combined with the corresponding value of hwPimStarGRpfRouteAddress identifies the route used to find the RPF interface towards the RP. The InetAddressType is given by the hwPimStarGRpfNextHopType object.