IFBIF_LEARNING
do_bridgeflag(ctx, val, IFBIF_LEARNING, 1);
do_bridgeflag(ctx, val, IFBIF_LEARNING, 0);
bif->bif_flags = IFBIF_LEARNING | IFBIF_DISCOVER;
if (sbif->bif_flags & IFBIF_LEARNING) {
if (bif->bif_flags & IFBIF_LEARNING) { \