#!/bin/bash #__author__: cavivie DEFAULT_TUN_ADDR="10.10.10.2/24" DEFAULT_TUN_DEST="10.10.10.1" function do_route() { local route_op="${1}" local tun_addr="${2:-$DEFAULT_TUN_ADDR}" local tun_dest="${3:-$DEFAULT_TUN_DEST}" sudo route ${route_op} -net 1.0.0.0/8 ${tun_dest} sudo route ${route_op} -net 2.0.0.0/7 ${tun_dest} sudo route ${route_op} -net 4.0.0.0/6 ${tun_dest} sudo route ${route_op} -net 8.0.0.0/5 ${tun_dest} sudo route ${route_op} -net 16.0.0.0/4 ${tun_dest} sudo route ${route_op} -net 32.0.0.0/3 ${tun_dest} sudo route ${route_op} -net 64.0.0.0/2 ${tun_dest} sudo route ${route_op} -net 128.0.0.0/1 ${tun_dest} # tun2 do like this automatically sudo route ${route_op} -net ${tun_addr} ${tun_dest} } function usage(){ echo "Usage: route add add tun routes to system route table route del delete routes from system route table route help display all usages of the shell script" } # START MAIN-OPTIONS case $1 in add) do_route add $2 $3;; del) do_route delete $2 $3;; *) usage ;; esac # END MAIN-OPTIONS