This is very often due to upstream vendor issues. In the case of routers, even if you're the one designing the IC's, building all the layer 7 services, industri

This is very often due to upstream vendor issues. In the case of routers, even if you're the one designing the IC's, building all the layer 7 services, industrial design of the plastics, etc; there's likely still a vendor providing your radios and their drivers are almost always a black box for you. Sometimes, while you go back and forth with the vendor in a hapless effort to repro anomalous bugs, the best thing for the customer is reboot-every-N-days instead of degraded-performance-forever. It sucks, but its commonplace. (N.B. I work in this space and its definitely been a pain point that we've had to accept to be able to make progress)