ip addr add ip/subnet dev eth0 # or sudo dhclient
ip addr del ip/subnet dev eth0 ifconfig ethX 0.0.0.0 sudo dhclient -r
Add route
sudo route del default ip route add default gw sudo ip route add default via 192.168.1.254 sudo route add default gw 192.168.1.254 eth0
# ip link set dev <interface> up # ip link set dev <interface> down sudo ip link set dev controller-eth0 up
ssh-keygen -l -f /etc/ssh/ssh_host_ecdsa_key.pub