[ no network ] --> [ Is there an IP address? ] [ Is there an IP address? ] -- no --> [ Check NIC driver, dmesg ] [ Is there an IP address? ] -- yes --> [ Can you ping the router? ] [ Can you ping the router? ] -- no --> [ Check cables, router, and switches ] [ Can you ping the router? ] -- yes --> [ Can you ping a DNS address? ] [ Can you ping a DNS address? ] -- no --> [ Trying pinging 8.8.8.8 ] [ Can you ping a DNS address? ] -- yes --> [ Traceroute ]