Environment

• Python version: 3.7 (should be on any)
• NetBox version: 2.8

Steps to Reproduce

1. Disable any installed plugins by commenting out the PLUGINS setting in configuration.py.
2. Add two devices with interfaces, let’s call them A and B.
3. Create a circuit with two terminations, one on the A side and one on the Z side.
4. Connect interfaces on device A to the A side of the circuit, and device B on the Z side.

Expected Behavior

Historically, the circuit termination was the connected endpoint, meaning that you were able to see the property via.

Here’s an interface connected before the update:

This is the trace:

Observed Behavior

Due to the new tracing logic, circuit terminations gets resolved in there, meaning that the template never ends up in the code path that renders the via, and only interfaces are the connected endpoints.

Here’s an interface connected after the update:

Here’s the trace:

This behavior change is a bit tricky to resolve, since it involves two parts of the Netbox code: the signal that handles cables and connected endpoints in netbox.dcim.signals:update_connected_endpoints, which after a bit of indirection calls trace, and the template netbox/templates/dcim/inc/interface, specifically the part that triggers on iface.connected_endpoint.term_side.

I hope that this is understandable. I’d be happy to provide any additional info that you might need.

Cheers