ICE_STATE_ATTACHING
if (ice_test_state(&sc->state, ICE_STATE_ATTACHING)) {
case ICE_STATE_ATTACHING:
ice_set_state(&sc->state, ICE_STATE_ATTACHING);
ice_clear_state(&sc->state, ICE_STATE_ATTACHING);
ice_clear_state(&sc->state, ICE_STATE_ATTACHING);