Restarts use sudo -n systemctl against an allowlist. mesh-gateway restarts block ~120 s (serial reconnect); use the Mesh Relay Flush/Restart procedure when messages are in flight.
MeshCore (ESP32 companion — TCP :5000)
Meshtastic (ESP32 — TCP :4403)
Reticulum / RNode (ESP32 — serial)
Writing EEPROM briefly stops rnsd (it owns the serial port). LoRa link drops for a few seconds.