REGISTER_SYNC_ON
if (udp->uberflags.uf_tdb_register_sync == REGISTER_SYNC_ON) {
case REGISTER_SYNC_ON:
udp->uberflags.uf_tdb_register_sync = REGISTER_SYNC_ON;
if (enable != REGISTER_SYNC_ON)
if (enable != REGISTER_SYNC_ON)