IbmVethMcastFilterModifyBit   25 drivers/net/ethernet/ibm/ibmveth.h #define IbmVethMcastEnableFiltering  (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit)
IbmVethMcastFilterModifyBit   26 drivers/net/ethernet/ibm/ibmveth.h #define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)