1. download
2. 展開(vpnclient)
3. /usr/local/ 配下に移動
4. sudo make

sudo /usr/local/vpnclient/vpnclient start
sudo /usr/local/vpnclient/vpncmd 

niccreate
accountcreate
accountpasswordset
accountstartupset
accountconnect
accountstatusget

sudo vi /etc/network/interfases

iface vpn_nic inet dhcp

ネットワークリスタート

/etc/init.d/networking restart 
もしくは
sudo ifdown vpn_nic
sudo ifup vpn_nic

#!/bin/bash
cd /usr/local/vpnclient/
sudo ./vpnclient start
sudo ifdown vpn_nic1
sudo ifup vpn_nic1
sudo route delete default vpn_nic1

#!/bin/bash
cd /usr/local/vpnclient/
sudo ifdown vpn_nic1
sudo ./vpnclient stop

サーバ

[Unit]
Description=SoftEther VPN Server
After=network.target network-online.target

[Service]
ExecStart=/usr/local/vpnserver/vpnserver start
ExecStop=/usr/local/vpnserver/vpnserver stop
Type=forking
RestartSec=3s

[Install]
WantedBy=multi-user.target

クライアント

[Unit]
Description=SoftEther VPN Client
After=network.target network-online.target

[Service]
ExecStart=/usr/local/vpnclient/vpnclient start
ExecStop=/usr/local/vpnclient/vpnclient stop
Type=forking
RestartSec=3s

[Install]
WantedBy=multi-user.target