apparent inconsistency in prop264
In A.1, "the protocol list for all current Tor versions" says HSDir=1, there is no version 2. But in A.2, both clients and relays are required to support HSDir=2, which A.1 just said does not exist.
https://gitweb.torproject.org/torspec.git/tree/proposals/264-subprotocol-versions.txt#n304
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