You are using staging server - a separate instance of the ESP Component Registry that allows you to try distribution tools and processes without affecting the real registry.
# Client side demo of ESP-PPP-Link This is a basic demo of using esp-mqtt library, but connects to the internet using a PPPoS client. To run this example, you would need a PPP server that provides connectivity to the MQTT broker used in this example (by default a public broker accessible on the internet). If configured, this example could also run a ping session and an iperf console. The PPP server could be a Linux computer with `pppd` service or an ESP32 acting like a connection gateway with PPPoS server (see the "slave" project).
To create a project from this example, run:
idf.py create-project-from-example "espressif/eppp_link^0.1.0:host"