ip route

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

• Display the routing table:

ip route {{show|list}}

• Add a default route using gateway forwarding:

sudo ip route add default via {{gateway_ip}}

• Add a default route using eth0:

sudo ip route add default dev {{eth0}}

• Add a static route:

sudo ip route add {{destination_ip}} via {{gateway_ip}} dev {{eth0}}

• Delete a static route:

sudo ip route del {{destination_ip}} dev {{eth0}}

• Change or replace a static route:

sudo ip 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 route get {{destination_ip}}