======================================== 還好在xda-developers原po上找到了: Help, when I go back to the non hacked version of Internet Sharing to tether via USB, it no longer works!
For some reason the IP address of your virtual USB ethernet device gets blanked out sometimes, to fix this:
1. Go to Start->Settings->Connections Tab->Wi-Fi applet 2. On the Network Adapters tab, choose "Remote NDIS Host" 3. Set the IP to 192.168.0.2 4. Set the Subnet Mask to 255.255.255.0