I have a problem binding applications to particular interfaces/network\nadaptors.\n\nI have Win XP SP 2 Pro. I have 2 network adapters in my Machine, Wifi\n(Intel 3495ABG) and Ethernet (Broadcom Netxtreme Gigabit). I am using\na bittorent application (utorrent specifically, but azureus exhibits\nsimilar behaviour), and I am attempting for it to use the Ethernet for\nall its communications, and all other applications to use the Wifi. I\nam not trying to download anything in Bittorent, only upload,\nbehaviour for downloading is unknown. I changed "interface metrics" in\nthe properties of TCPIP for each adapter using Windows GUI and Network\nConnections. I set the ethernet to 100, and the wifi to 1. I belive\nthat will make the wifi the "default" adaptor in the system. I\ndisabled Dead Gateway Detection through registry, it didnt do\nanything. I force the bittorrent application to only use the\nethernet's IP through its own options.\n\nWhen wifi adaptor is on, Firefox (and presumably any other application\nthat isnt the BT one), goes through the Wifi, verified by checking my\nIP on a webpage. When wifi is off, Firefox goes through ethernet.\n\n\nWhen the wifi adapter is disabled, I get full CONSTANT upload speed on\nthe ethernet in the BT app (BT app's settings are always set to use IP\nof ethernet by me for all testing). When I turn on wifi, immediately\nspeed drops, and goes to zero for 1 to 2 mins , then comes back for 30\nseconds at full speed, then drops again to zero for 1 to 2 mins , and\nkeeps doing this over and over.\n\nUsing 2 copies of Wireshark/Ethereal, I noticed that when my upload\ngoes to zero in the application, ethernet IP stops sending out any\ndata on ethernet adapter, I get a ton of retransmission requests from\nthe other IPs on ethernet adapter, no reply is ever given to them.\nWhen I look at my wifi side, I see a couple (2-3) packets go OUT WITH\nETHERNET IP destined for the IPs I saw on ethernet adapter sniffer, no\nmore than 2-3 of these "ethenet IP as source going out over wifi\nadapter" packets I see. Then there is a long wait (1-2 mins) until\nthe bittorent application starts uploading again over the ethernet\nadapter.\n\nWhen BT program starts uploading, I see a ARP request to get my\ndefault gateway's MAC. Then the BT program makes new connections\n(SYNs) to all the other IPs.\n\nThe ethernet IP is a 10.0.8.*, wifi is 192.168.1.*. Plus external IPs\nare different for wifi and ethernet and different ISPs. What on earth\nis going on? I am pretty sure this problem is related to windows, not\nthe specific applications.