But when Windows 10 was released without NDIS 5 support, WinPcap failed to keep up, leaving users wondering what to do. But few enough people seem to experience this that simply documenting the behavior is probably sufficient to eliminate almost all the confusion that it causes. For 14 years, WinPcap was the standard libpcap package for Windows.
#Wireshark loopback windows driver
It might be possible to have the npcap driver log an error message if it unable to open loopback, or have packet.dll log an error if it is unable to open the loopback interface, along with the error code. Suggestion: document in the npcap README that the BFE service must be running and that the loopback capture interface will not show up in Wireshark if it isn't. Long explanation: If the BFE is disabled and you don't know that it could be an issue it takes a very long time to discover that it is the source of the problem - there is only the barest hint in the log output of the debug version of packet.dll of what is wrong and it can only be recognized as such by exploration in the registry, by building the debug version of packet.dll, etc. Most other Unix operating systems use lo0.
After starting the BFE service, Wireshark listed the npcap loopback interface as an available capture interface and loopback packet capture worked correctly. On a Linux computer, you will need to capture from the loopback interface which is lo most of the time. After installation, Npcap's setup will create this adapter ('Npcap Loopback Adapter'). In my case the reason turned out to be that the Windows Basic Filtering Enging (BFE) service was not running. 1 Answer Sorted by: 1 Npcap, the driver used by Wireshark, is able to sniff loopback packets (transmissions between services on the same machine) by using the Windows Filtering Platform (WFP). choosing the first non-loopback interface if there are any non-loopback.
TL DR: A few people have reported that after installing npcap the loopback interface is not listed in Wireshark even though it shows up, e.g., in the ipconfig list. Like other protocol analyzers, Wiresharks main window shows 3 views of a packet.
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