Run SoftEther VPN Client on Linux

sudo vpnclient start

Run SoftEther VPN Client Manager and configure it, then connect

sudo dhclient vpn_vpn
sudo ip route add 160.235.81.120/32 via 192.168.1.1 dev wlp3s0
sudo ip route del default via 192.168.1.1 dev wlp3s0

Then change the dns in resolv.conf