![]() ![]() ![]() Is capturing traffic, but not in promiscuous mode - that's how it sees the On the Ethernet adapter, but the pings timed out. In the second photo, at the startup screen, Wireshark is showing traffic Daniel, am I remembering correctly? And would removing that interface make a difference here? On my Windows 10 machine, with Npcap installed, I have only the "Adapter for loopback traffic capture" I think the "Npcap Loopback Adapter" is left over from an earlier Npcap installation - I seem to remember that there was an issue where it didn't get removed when Npcap was updated. ![]() ipconfig/all shows the "Npcap Loopback Adapter", but doesn't show the "Adapter for loopback traffic capture". The fact that the graph on the startup screen is showing traffic for the Ethernet means that the driver for the Ethernet adapter is passing packets to NDIS (otherwise, Npcap wouldn't be seeing the packets and passing them to Wireshark so that it can count them), but somehow either the pings aren't getting transmitted (so the gateway isn't seeing them and doesn't know that it should reply) or the replies aren't getting to the ping command.ĭaniel, any ideas what might be happening? Any clues in the diagnostic report?Īnother odd thing is that Wireshark is seeing both a "Npcap Loopback Adapter" and an "Adapter for loopback traffic capture". (The capture to show the graphs is also being done with a short snapshot length - all Wireshark cares about is the number of packets, not the contents of the packets, and a short snapshot length reduces the chances that packets will be dropped, as less space is consumed in the kernel buffers used on most operating systems, including Windows with WinPcap/Npcap - and perhaps that makes the difference.) So my guess is that, somehow, the pings are working only when a capture is being done in promiscuous mode. There's no indication whether the capture is being done in promiscuous mode, but the terminal window shows pings timing out and then succeeding. In the first photo, Wireshark is displaying packets, and it appears that the capture is in progress and hasn't been stopped (the red "stop" button isn't grayed out, and the blue "start" button is). In that case, Wireshark is capturing traffic, but not in promiscuous mode - that's how it sees the packets to count them and display them in the graphs (it doesn't do it by getting interface statistics, it does them by capturing packets and counting them). In the second photo, at the startup screen, Wireshark is showing traffic on the Ethernet adapter, but the pings timed out. Please find the after launching the capture on the Ethernet card Reply to this email directly, view it on GitHub You are receiving this because you authored the thread. There is the loopback installed by Wireshark Was there a line on the startup screen corresponding to your Ethernet If it's just a flat line, what happens if you try pinging the gateway -ĭoes that cause the line to show some traffic? Is it showing a line for thatĪdapter? If so, does that line show any traffic, or is it just a flat line? Interfaces, including the Ethernet adapter. Wireshark should display a line on the startup screen for each of the So that's the card on which networking only works you're running Wireshark? On Wireshark there is the Ethernet card classic that I use to capture. So there's an interface on your machine, shown by Wireshark, that Surely received but not correctly interpret. That all packets that come from the computer is replied. I'm able to capture on the firewall just in front. ![]()
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