[bsysop]

What developer out there reads "The spin bit is an OPTIONAL feature of QUIC", then sees "Implementations MUST allow administrators of clients and servers to disable the spin bit either globally or on a per-connection basis" and thinks "Yes, this is definitely something I will implement and test out all the edge cases." Especially stuff like "The random selection process SHOULD be designed such that on average the spin bit is disabled for at least one eighth of network paths."

This whole thing is going to be a congestion control arms race. With TCP out the window this is going to be an epic battle of network operators trying to heuristically classify important vs. bulk traffic any way they can, content servers trying every trick in the book to get their traffic prioritized ahead of competitors, and savvy users running tweaked router firmware to jump the Fair Share queue.

[Ericson2314]

I dunno, there is far less information than before.