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copied!<p>It seems that I have found a solution. One can use winpcap to inject packets to any interface. And there is good wrapper for .net: <a href="http://www.tamirgal.com/home/dev.aspx?Item=SharpPcap" rel="nofollow noreferrer">http://www.tamirgal.com/home/dev.aspx?Item=SharpPcap</a></p> <p>(I would have prefered a solution which requires no extra libraries to be installed...)</p> <p><strong>UPDATE:</strong> Here is what I came up for sending a WOL packet on all interfaces: </p> <pre><code>//You need SharpPcap for this to work private void WakeFunction(string MAC_ADDRESS) { /* Retrieve the device list */ Tamir.IPLib.PcapDeviceList devices = Tamir.IPLib.SharpPcap.GetAllDevices(); /*If no device exists, print error */ if (devices.Count < 1) { Console.WriteLine("No device found on this machine"); return; } foreach (NetworkDevice device in devices) { //Open the device device.PcapOpen(); //A magic packet is a broadcast frame containing anywhere within its payload: 6 bytes of ones //(resulting in hexadecimal FF FF FF FF FF FF), followed by sixteen repetitions byte[] bytes = new byte[120]; int counter = 0; for (int y = 0; y < 6; y++) bytes[counter++] = 0xFF; //now repeat MAC 16 times for (int y = 0; y < 16; y++) { int i = 0; for (int z = 0; z < 6; z++) { bytes[counter++] = byte.Parse(MAC_ADDRESS.Substring(i, 2), NumberStyles.HexNumber); i += 2; } } byte[] etherheader = new byte[54];//If you say so... var myPacket = new Tamir.IPLib.Packets.UDPPacket(EthernetFields_Fields.ETH_HEADER_LEN, etherheader); //Ethernet myPacket.DestinationHwAddress = "FFFFFFFFFFFFF";//it's buggy if you don't have lots of "F"s... (I don't really understand it...) try { myPacket.SourceHwAddress = device.MacAddress; } catch { myPacket.SourceHwAddress = "0ABCDEF"; }//whatever myPacket.EthernetProtocol = EthernetProtocols_Fields.IP; //IP myPacket.DestinationAddress = "255.255.255.255"; try { myPacket.SourceAddress = device.IpAddress; } catch { myPacket.SourceAddress = "0.0.0.0"; } myPacket.IPProtocol = IPProtocols_Fields.UDP; myPacket.TimeToLive = 50; myPacket.Id = 100; myPacket.Version = 4; myPacket.IPTotalLength = bytes.Length - EthernetFields_Fields.ETH_HEADER_LEN; //Set the correct IP length myPacket.IPHeaderLength = IPFields_Fields.IP_HEADER_LEN; //UDP myPacket.SourcePort = 9; myPacket.DestinationPort = 9; myPacket.UDPLength = UDPFields_Fields.UDP_HEADER_LEN; myPacket.UDPData = bytes; myPacket.ComputeIPChecksum(); myPacket.ComputeUDPChecksum(); try { //Send the packet out the network device device.PcapSendPacket(myPacket); } catch (Exception e) { Console.WriteLine(e.Message); } device.PcapClose(); } } </code></pre>

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