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        private bool IsVPNConnected()
        {
            bool result = false;
            NetworkInterface[] netifs = NetworkInterface.GetAllNetworkInterfaces();
            foreach (NetworkInterface netif in netifs)
            {
                if (netif.Name.Equals(VPNConnectionName))
                {
                    RTBnetlog.AppendText("\nConnection " + netif.Name + " is up");
                    result = true;
                }
            }
            return result;
        }