REGISTER_SYNC_OFF
udp->uberflags.uf_tdb_register_sync = REGISTER_SYNC_OFF;
udp->uberflags.uf_tdb_register_sync = REGISTER_SYNC_OFF;
case REGISTER_SYNC_OFF:
udp->uberflags.uf_tdb_register_sync = REGISTER_SYNC_OFF;
else if (oldenable != REGISTER_SYNC_OFF ||