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Re:OpenBSD Innovations by p_ing on Sunday February 23, 2025 @09:02AM (#43149283)
For NT 3.1, Microsoft purchased a TCP/IP stack from Spider Systems[0]. It's not clear how much of that code was based on BSD's TCP/IP stack. Microsoft wrote their own TCP/IP stack for NT 3.5.[1]

Microsoft did leverage BSD code for common network utilities (ping, tracert, ftp, etc.), which still exist in Windows today, although Microsoft's preference is to leverage the "better" equivalent PowerShell cmdlets where available.

[0] https://en.wikipedia.org/wiki/Spider_Systems

[1] https://web.archive.org/web/20151229084950/http://www.kuro5h...

EDIT: If you want to hunt for BSD code, try taking a look at NT4[2].

[2] https://github.com/lianthony/NT4.0/tree/master/private/ntos/...

Re:OpenBSD Innovations by pjmlp on Monday February 24, 2025 @04:34AM (#43157536)
The BSD TCP/IP stack went away when Vista was released, it is long gone.

https://en.wikipedia.org/wiki/Windows_Vista_networking_techn...

Re:OpenBSD Innovations by p_ing on Monday February 24, 2025 @08:52AM (#43159557)
For one, we don't know if it was "BSD TCP/IP" stack, just that the stack purchased from Spider was licensed as such, two, that stack went away with NT 3.5.