Display (remote) device network status

[bettio]

Allow displaying remote device network status. For each network interface following information should be available:

• interface name
• addresses (IPv4 and IPv6 addresses)

Displaying IP routes (IPv4 and IPv6) would be useful and it would be interesting monitoring network usage (rx/tx bytes and packets).

As a conceptual model, ip linux command should be used rather than the old ifconfig approach.