Update documents on networking and advanced settings to include wsl1 mode

[jwiseman-obs]

Documentation Issue

The available information for WSL2 mentions there are only two networking modes (NAT and mirrored), but this slightly incorrect. This may be true for a Version 2 distro, but wslinfo will report wsl1 as output from wslinfo --networking-mode for a distro configured as Version 1 running in WSL2. This is a case not clearly listed in the documentation.

This is especially confusing as WSL1 networking looks like mirrored networking in WSL2, but doesn't behave exactly the same.

Link to documentation page

• https://learn.microsoft.com/en-us/windows/wsl/wsl-config
• https://learn.microsoft.com/en-us/windows/wsl/networking

Maybe elsewhere too.

Suggested Improvements

Add details about the "wsl1" networking mode. Include more information than just "upgrade the distro to Version 2" as that (1) may not be an option, (2) doesn't provide details on how wsl1 networking functions, and (3) isn't helpful for troubleshooting. A link to the older WSL1 documentation may be sufficient, if it's still accurate related to how wsl1 networking functions in WSL2.