Context
Short network failures were breaking calls and SSH sessions but did not last long enough to appear in ordinary speed tests.
Approach
A custom monitor measured three network hops separately: the laptop to mesh node, mesh node to router, and router to the ISP.
Outcome
The experiment made it possible to identify where micro-outages occurred instead of treating the whole connection as one opaque service.
What I learned
Small, focused observability tools can be more useful than broad dashboards when the failure mode is specific.