Yil; I also got the same behaviour in direct download, with client sending ABOR (unlike fxp, where it didn't send ABOR) - where all transfers got blocked. PORT, PASV, fxp, direct. But the fact that io was blocking both pasv and port for all sessions, including new login, and the fact that io locked up a few minutes later denying all connections makes me assume that it's symptoms of the lockup bug (or the cause), rather than a separate incident.
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