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A comment on It is always the DNS. Parent comment

Re:It is always the DNS by msravi on Friday December 03, 2021 @01:07AM (#29427120)
> https is more costly (in terms of network traffic and latency) than the current UDP-based protocol

That's what I used to think. But somehow in practice, at least for me, using DoH seems to return responses much faster (DoH response takes about ~1/10th the time). Don't know why... Maybe UDP packets are being dropped in bursty traffic by the ISP?

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Re:It is always the DNS by phicoh on Friday December 03, 2021 @01:27AM (#29427216)
If I remember correctly, there is a study done by Mozilla, that showed that for the long tail, DoH is faster. For the common case it is slower.

Nobody really knows why that is the case. Maybe some ISPs don't spend as much time optimizing UDP traffic compared to TCP.

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