`set_network_addresses_tuple` doesn't work for IPv6 on Windows 11

[ReactorScram]

The netsh syntax appears to be wrong. I'm not sure if it worked on older versions of Windows? But on my Win11 dev system it doesn't work.

This does work: netsh interface ipv6 set address interface="My Wintun Tunnel" address=f000::f000

So I'm working around it here https://github.com/firezone/firezone/pull/3120/files#diff-d3087e924a318d4651ba5e2d08ebc753563e4cd3d2a0f6acccf2475936595551R86-R95

I'm not sure if the CREATE_NO_WINDOW flag helps or not - It worked for Powershell windows I was trying to hide.

[TroyNeubauer]

Thanks for flagging!

I won't have access to a Win11 machine for a few weeks so feel free to submit a PR if you need this fixed faster

[TroyNeubauer]

I wonder if these Win32 functions could help: https://learn.microsoft.com/en-us/windows/win32/iphlp/managing-ip-addresses-using-addipaddress-and-deleteipaddress

[ReactorScram]

No problem! For now I'm just shelling out to netsh directly instead of using the wintun function.

Yeah I've ended up using a lot of those IpHelper functions from the Windows crate in the Firezone client. (Edit: https://github.com/firezone/firezone/blob/3d8ed7f10ed596bb7fb3ca376888eb10a267bc50/rust/connlib/tunnel/src/device_channel/tun_windows.rs#L75-L99)

If anyone's reading this and doesn't want to shell out, ChatGPT recommends CreateUnicastIpAddressEntry for both IPv4 and IPv6 - https://microsoft.github.io/windows-docs-rs/doc/windows/Win32/NetworkManagement/IpHelper/fn.CreateUnicastIpAddressEntry.html