Hi, I have a VNC connection between one of our devices (1) and my computer (2). From time to times the VNC display would freeze for a few second. I suspect some lost of packets on the Wifi (signal strength is not very high). So I setup another computer (3) to spy on the exchange. On that computer (3) with Wireshark and promiscuous mode (I filter the capture with the tcp port). My problem is that I received only 2 frames in about 10 minutes (While I see dozens per second on the computer(1)). Can someone explain that big a difference ? On the spying computer (3), if I remove the filter and restart the capture in monitoring mode, I can see a lot of exchanges (protocol 802.11) between my computer (2) and the device (1). How come, I can see the exchange on 802.11 but not TCP/IP ?