Rotas para usar internet com VPN

#!/bin/bash
default_interface_net=wlp3s0
default_interface_vpn=tun0
utun_interface=$(netstat -nr -f inet | grep ${default_interface_vpn} | awk '{print $NF}' | head -n1)
default_route=$(netstat -nr -f inet | grep ${default_interface_net} | grep UGH | head -n1 | awk '{print $2}')
sudo route del default
sudo route add default gw ${default_route}
sudo route add -net 10.0.0.0/8 ${utun_interface}