Udp Send - double packet

[bjorn...@gmail.com]

I have a C# program for sending UDP packets with a given interval, but it seems like I'm sending double packets. 

The code I've used:

            using (var communicator = _selectedDevice.Open(100, PacketDeviceOpenAttributes.Promiscuous, 1000))
            {
                PacketBuilder builder = new PacketBuilder(new EthernetLayer
                {
                    Source = new MacAddress("01:01:01:01:01:01"),
                    Destination = new MacAddress("02:02:02:02:02:02"),
                    EtherType = EthernetType.None, // Will be filled automatically.
                }, new IpV4Layer
                {
                    Source = new IpV4Address(string.Join(".", _localIpAddress)),
                    CurrentDestination = new IpV4Address(string.Join(".", _remoteIpAddress)),
                    Fragmentation = IpV4Fragmentation.None,
                    HeaderChecksum = null, // Will be filled automatically.
                    Identification = 123,
                    Options = IpV4Options.None,
                    Protocol = null, // Will be filled automatically.
                    Ttl = 100,
                    TypeOfService = 0
                }, new UdpLayer
                {
                    SourcePort = (ushort) localPort,
                    DestinationPort = (ushort) remotePort,
                    Checksum = null, // Will be filled automatically.
                    CalculateChecksumValue = true,
                }, new PayloadLayer
                {
                    Data = new Datagram(data),
                });


                // Build and send the packet
                communicator.SendPacket(builder.Build(DateTime.Now));
            }

Does anyone know why, and how I can resolve it? I'm not sure if it's relevant, but my _selectedDevice has two addresses (IPv4, and IPv6).

Hope you can help me, thanks!