Hello Knot DNS users,

Knot DNS supports TCP Fast Open (when configured) in both the server and client roles for several years.
However, we have not observed any performance or other improvements from this technology so far. Since
removing it would simplify the code, I'm considering dropping the support for it. Is there anyone who would
miss TFO in Knot DNS?

For better XFR efficiency between Knots, https://www.knot-dns.cz/docs/latest/singlehtml/index.html#remote-pool-limit
works much better.

Thanks,
Daniel