https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203623

            Bug ID: 203623
           Summary: [tcp] Congestion window set to 1mss on any type of
                    loss
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: [email protected]
          Reporter: [email protected]

We set cwnd to 1mss when we detect loss via arrivals of 3 dupacks. That is
wrong as we severely underutilizing network capacity by doing so.

Past discussion:
https://lists.freebsd.org/pipermail/freebsd-net/2015-September/043249.html

Recent discussion:
https://lists.freebsd.org/pipermail/freebsd-transport/2015-October/000010.html

Please comment on the recent discussion if you want to participate.

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