Support networkingMode=mirrored while IPv6 is disabled via Registry

[MeikTranel]

Is your feature request related to a problem? Please describe.

In previous issues we discovered that having HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\DisabledComponents set to 0xFF / 255 is problematic when networkingMode=mirrored is used - networking Mode simply falls back to the bridged default networking under windows. Sometimes removing or setting to 0x20 is helpful and users are permanently happy. Sometimes that is not enough - IPv6 Registry Setting related Issues .
It seems that - either because of past windows vulnerability mitigations or caused by a VPN Client - a lot of folks do not have the ability to reliably set that registry value without it being reset the next reboot.

Describe the solution you'd like
It would be neat if WSL in this case would just do the mirrored mode networking without IPv6.

Describe alternatives you've considered
It'd be neat if Microsoft could do some work to get IT administrators to get rid of the vulnerability mitigation when it is no longer needed though that isn't the WSL teams problem to deal with.

[github-actions]

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[MeikTranel]

/feature

[github-actions]

Diagnostic information

Found '/feature', adding tag 'feature'

[keith-horton]

Hi there.

WSL fully supports disabling IPv6 using Powershell NetAdapterBinding commandlets. https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/configure-ipv6-in-windows

"Run the PowerShell command Disable-NetAdapterBinding -Name "" -ComponentID ms_tcpip[6]"