NM_BDG_EXCLUSIVE
return !(b->bdg_flags & NM_BDG_EXCLUSIVE) || b->ht == auth_token;
b->bdg_flags |= NM_BDG_ACTIVE | NM_BDG_EXCLUSIVE;
if (!(b->bdg_flags & NM_BDG_EXCLUSIVE)) {
b->bdg_flags &= ~(NM_BDG_EXCLUSIVE | NM_BDG_ACTIVE);
b->bdg_flags |= NM_BDG_EXCLUSIVE | NM_BDG_ACTIVE;