Mirrored Network mode fails with two network cards with the same MAC-Address
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- Dominant language
- C++
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Description
### Windows Version
Microsoft Windows [Version 10.0.26200.7623]
### WSL Version
2.6.3.0
### Are you using WSL 1 or WSL 2?
- [x] WSL 2
- [ ] WSL 1
### Kernel Version
6.6.87.2-1
### Distro Version
Debian GNU/Linux 13 (trixie)
### Other Software
_No response_
### Repro Steps
- Connect your laptop to a dock
- Enable Mac-Address-Passthrough in the Bios
- Have mirrored mode networking anabled in .wslconfig:
`[wsl2]
networkingMode=Mirrored`
### Expected Behavior
Mirrored networking should work as described
### Actual Behavior
No network setup at all. Interfaces are down with no IP configured.
### Diagnostic Logs
_No response_
Contributor guide
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
Start with the reported .wslconfig setting, networkingMode=Mirrored, and reproduce on WSL 2 with a dock and BIOS MAC-address passthrough enabled. Investigate the setup behavior when two network cards share a MAC address. Done means mirrored networking configures active interfaces with IP addresses and connectivity works in this scenario.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- linux
- Domain
- networking, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100