tldr/pages/linux/ip-route.md

ip route

IP Routing table management subcommand. More information: https://manned.org/ip-route.

• Display the main routing table:

ip {{[r|route]}}

• Add a default route using gateway forwarding:

sudo ip {{[r|route]}} {{[a|add]}} default via {{gateway_ip}}

• Add a default route using eth0:

sudo ip {{[r|route]}} {{[a|add]}} default dev {{eth0}}

• Add a static route:

sudo ip {{[r|route]}} {{[a|add]}} {{destination_ip}} via {{gateway_ip}} dev {{eth0}}

• Delete a static route:

sudo ip {{[r|route]}} {{[d|delete]}} {{destination_ip}} dev {{eth0}}

• Change or replace a static route:

sudo ip {{[r|route]}} {{change|replace}} {{destination_ip}} via {{gateway_ip}} dev {{eth0}}

• Show which route will be used by the kernel to reach an IP address:

ip {{[r|route]}} {{[g|get]}} {{destination_ip}}

• Display a specific routing table:

ip {{[r|route]}} {{[l|list]}} {{[t|table]}} {{table_number}}