wfIpRfBgp3ExportMask 1.3.6.1.4.1.18.3.5.3.2.1.15.1.4

The mask applied to wfIpRfBgp3ExportAddress. If zero, this filter applies to all networks. If the address is zero and this parameter is 255.255.255.255, this filter applies to the default route.