Per-device traffic monitoring for OpenWrt in Grafana

I wanted to monitor the traffic of my home network directly inside my Grafana dashboards, but there was one annoying limitation: the standard OpenWrt Prometheus exporter can expose interfaces, NAT traffic and system metrics, but they don’t give me a simple per-device view, with the actual DHCP names of my devices. In practice, I could see traffic on interfaces such as pppoe-wan, br-lan, bond0, VLANs, IPS, but not a clean list like the traffic from: MacBook , Archive server, Grafana server, iPhone, HomePod, etc…