MVNETA_DA_FILT_UCAST_BASE
mvreg_write(pp, MVNETA_DA_FILT_UCAST_BASE + offset, val);
unicast_reg = mvreg_read(pp, (MVNETA_DA_FILT_UCAST_BASE + tbl_offset));
mvreg_write(pp, (MVNETA_DA_FILT_UCAST_BASE + tbl_offset), unicast_reg);