#!/bin/bash echo -e "Add dev..." sudo ip tuntap add mode tun dev tun-fclash sudo ip addr add 198.18.0.1/15 dev tun-fclash sudo ip link set dev tun-fclash up # Configure the default route table with different metrics. Let's say the primary interface is eth0 and gateway is 172.17.0.1. echo -e "Configuring routes..." sudo ip route del default sudo ip route add default via 198.18.0.1 dev tun-fclash