wsl vEth device is not shown
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- Dominant language
- C
- Stars
- 3.6k
- Forks
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Description
Describe the bug
When I set my Windows Subsystem for Linux (WSL) network mode to Mirrored, and try to capture the loopback packets to WSL, some packs are missing through loopback adapter.
After some exploration, I found that dumpcap -D didn't show the device vEthernet (FSE HostVnic), which is the interface I need to capture on.
To Reproduce
- Enable WSL and set the network mode to Mirrored
dumpcap -Din WindowsGet-NetAdapter -IncludeHiddenin Windows to see the hidden device.
Expected behavior
dumpcap -D should display the WSL network device vEthernet (FSE HostVnic).
Screenshots
Diagnostic information
- Windows version: Windows 11 Version 25H2, OS Build 26200.9168
- Wireshark Version 4.6.8 (Npcap Version 1.88)
- DiagReport
- Installation logs
Additional context
I found this issue is similar to my case. Let me know if there is any connection.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the issue with WSL Mirrored mode, then compare dumpcap -D with Get-NetAdapter -IncludeHidden for vEthernet (FSE HostVnic). Trace the adapter-enumeration entry point responsible for the missing device and verify that the device appears in dumpcap -D without omitting existing adapters.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- networking, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 52/100