I think the lack of any standing offerings of variations of Quake is a glaring mistake but easily rectified. :)
It's really heartening to see lan gaming continued and offered in such a way that the amount of hassle and setup is minimized and the gaming is maximized. We spent far too much time in the 90's and 2000's dealing with driver issues, etc etc. Bravo.
The idea was specified in 2005, and there's a related question about Windows using these addresses in 2011 [1]. I haven't tried to find older evidence.
[1] https://superuser.com/questions/238625/why-is-windows-defaul...
"Microsoft Windows 98 (and later) and Mac OS 8.5 (and later) already support this capability."
And https://www.techrepublic.com/forums/discussions/win-98-fails...