Loopback bundles should be passed via a CLA
See RFC9171:
Bundle Transmission invokes Bundle Forwarding, which always invokes a CLA. This may be some of the standard CLAs or a specific "loopback" CLA as a shortcut.
At the moment, we invoke Bundle Dispatching from Bundle Transmission which is not conformant to the RFC (though, it just performs the loopback check again and passes local bundles directly to Bundle Delivery, nothing else).
Edited by Felix Walter