Use sudo instead of a custom script

vpnserver.go

@@ -33,7 +33,6 @@ type OpenVpnMgt struct {
 	newAsTemplate    string
 	cacheDir         string
 	syslog           bool
-	ipRouteScript    string
 	otpMasterSecrets []string
 	hibpClient       *hibp.Client
 	debug            bool
@@ -130,7 +129,7 @@ func (s *OpenVpnMgt) Kill(session string, id int) error {
 	if _, ok := s.clients[session][id]; !ok {
 		return errors.New("unknown session id")
 	}
-	err, msg := s.sendCommand([]string{fmt.Sprintf("client-kill %d", id)}, session)
+	err, _ := s.sendCommand([]string{fmt.Sprintf("client-kill %d", id)}, session)
 	return err
 }