Destination incomplete, Path status not reachable

[tantadruj]

Internet->Rear port -> Front port -> Interface

Trace completed, but it also says origin has incomplete destination. Origin being the interface.
Front port connection status is connected. Interface connection path status is not reachable.
Interface has no origin, or destination under related paths.

Am I doing something wrong?

Version: NetBox Community v4.3.4

[tantadruj]

It would appear any front port has to have a connected rear port.

Problem solved.