You have two options:

• Run:

  
  
  

  sudo update-rc.d openvpn disable
  
  

  
  
  

  Then you'll have to run sudo service openvpn start to manually start the VPN.




• Or edit the file /etc/default/openvpn

  
  
  

  sudo gedit /etc/default/openvpn
  
  

  
  
  

  And uncomment the line:

  
  
  

  #AUTOSTART="none"
  
  

  
  
  

  So it looks like:

  
  
  

  AUTOSTART="none"
  
  

  
  
  

  Then you'll have to run sudo service openvpn start <vpn-name> to manually start the VPN. <vpn-name> is the config file name without .conf.