Prefix (Container) utilization does not calculate correctly when has children is Container

[emallette]

Deployment Type

Self-hosted

Triage priority

N/A

NetBox Version

v4.1.7

Python Version

3.12

Steps to Reproduce

1. I create a Container (Top-Level-Container) say 10.0.0.0/8
2. I create a sub-tended container say 10.0.0.0/9.

The utilization of the top-level-container is immediately 50%. The sub-tended container utilization is 0%. Shouldn't it aggregate the utilization of the sub-tended containers ? It does not.

Expected Behavior

I would expect the top-level container to correctly reflect the utilization based on the sub-tended containers. In this case I would expect 0% utilization to still be shown.

Observed Behavior

50% utilization was shown rather than 0% utilization.