IFBIF_BSTP_EDGE
bridge_ifsetflag(val, IFBIF_BSTP_EDGE);
bridge_ifclrflag(val, IFBIF_BSTP_EDGE);
if (flags & IFBIF_BSTP_EDGE)
breq->ifbr_ifsflags |= IFBIF_BSTP_EDGE;