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