> patched an Encrypted DNS Server to store the original TTL of a response, defined as the minimum TTL of its records, for each incoming query
The article seems to be based on capturing live dns data from some real network. While it may be true that persistent connections help reduce ttl it certainly seems like the article is accounting for that unless their network is only using http1.0 for some reason.
Freezing to death in winter should be a harder problem at this point right?