Support for multiple ethernet virtual adaptors in WSL2

[OleStauning]

I want to start my Linux distribution with two ethernet adaptors; eth0 and eth1. AFAIK the eth0 device is connected to the vEternet (WSL) virtual adaptor and I managed to create another vEthernet (WSL-TEST) adaptor through "Virtual Switch Manager" in windows:

Ethernet adapter vEthernet (WSL-TEST):

Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::2479:f92d:8abf:5e96%38
Autoconfiguration IPv4 Address. . : 169.254.94.150
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :

I have restarted my WSL instance, but lshw and ifconfig does not show the new virtual adaptor. How do I add my newly created "vEthernet (WSL-TEST)" adaptor ?

[Biswa96]

If you want to manually attach a virtual network interface it is possible with HcsModifyComputeSystem API.

[OleStauning]

Thank you for your suggestion. So there are no GUI- or command-line support in windows for doing this? - and I have to implement my own command-line tool. Is this correctly understood?

I guess my feature request is then to make an official command-line tool for supporting this.

In the meantime I will try to roll my own tool, thanks.

[OleStauning]

For future reference. It seems that following C# code can do what I want:

https://github.com/dantmnf/WSLAttachSwitch

[vlv-squid]

For future reference. It seems that following C# code can do what I want:

https://github.com/dantmnf/WSLAttachSwitch

When I was running this program,it crashed like this. What can I do?

[micheldiemer]

For future reference. It seems that following C# code can do what I want:
https://github.com/dantmnf/WSLAttachSwitch

When I was running this program,it crashed like this. What can I do?

Check firewall rules

Set-NetFirewallHyperVVMSetting -Name '{40E0AC32-46A5-438A-A0B2-2B479E8F2E90}' -DefaultInboundAction Allow
Get-NetFirewallHyperVVMSetting -PolicyStore ActiveStore -Name '{40E0AC32-46A5-438A-A0B2-2B479E8F2E90}'

Are you on Windows 11 ? Latest version of WSL ? Did you run sudo apt update && sudo apt upgrade ?
It should not do anything but I would suggest to create a new virtual switch with no spaces in it.

WSLAttachSwitch is a new program, not yet mature. If you are a developer, you could download the source code and try to debug it.

[micheldiemer]

Here a detailed working procedure on how to use WSLAttachSwitch

Script : #4799 (comment)

Text : #4799 (comment)