BTF_MASTER
if (unit->hci_flags & BTF_MASTER)
unit->hci_flags &= ~BTF_MASTER;
unit->hci_flags |= (btr->btr_flags & (BTF_INIT | BTF_MASTER));
btr.btr_flags |= BTF_MASTER;
btr.btr_flags &= ~BTF_MASTER;