(LAN) Перехват пакетов и передача их третьей машине

_device.OnPacketArrival += new PacketArrivalEventHandler(Program_OnPacketArrival);
                _device.Open(DeviceMode.Promiscuous, 1000);
                _device.Capture();

public void Program_OnPacketArrival(object sender, CaptureEventArgs e){}

Packet packet = Packet.ParsePacket(e.Packet.LinkLayerType, e.Packet.Data);
var arpPacket = ARPPacket.GetEncapsulated(packet);
DateTime time = e.Packet.Timeval.Date;
int len = e.Packet.Data.Length;
if (arpPacket != null)
{
//айпи отправителя
headerDgw.SenderIpAddress = arpPacket.SenderProtocolAddress;
//И мак адрес
headerDgw.SenderPhysicalAddress = arpPacket.SenderHardwareAddress;
//ip получателя
headerDgw.TargetIpAddress = arpPacket.TargetProtocolAddress;
//mac получателя
headerDgw.TargetPhysicalAddress = arpPacket.TargetHardwareAddress;
}

_device.Open(DeviceMode.Normal, 1000);