The entire technology is a wrapper on setns().
https://en.wikipedia.org/wiki/List_of_burn_centers_in_the_Un...
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I'm surprised that a "truly offline" workplace allows servers to be taken home and being connected to the internet.
I know some Antarctic research stations (like McMurdo for example) still have connectivity restrictions depending on time-of-day, and I wouldn't be surprised if they also had mirrors of these sort of things, and/or dual-3090 rigs for llama.cpp in the off hours.