On: Saving 100 terabytes of memory by optimizing 1.1.1.1's DNS cache

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"The entire concept of NAT" was for profit? "Linux routers responding ICMP from 192.0.0.8 when not having an IP address" was for profit? What?

The grocery store down the road only sells me things for profit but I hope you're not trying to imply that's somehow nefarious.