要執行以下的指令:

netsh interface ipv4 set interface "net" weakhostreceive=enabled
netsh interface ipv4 set interface "loopback" weakhostreceive=enabled
netsh interface ipv4 set interface "loopback" weakhostsend=enabled

其中 "net" 是外接網卡的名稱，"loopback"是虛擬網站的名稱。

請參考: http://blog.loadbalancer.org/direct-server-return-on-windows-2008-using-loopback-adpter/