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+Try changing the motd and saving the file. It'll reload. The log
+messages suggest that the server is dropping extant connection - as
+expected - but they don't actually drop. They just internally reboot
+as if each extant connection was fresh. The problem seems to be
+something like latency in shutdown-propagation:
+
+ - the new line-reader instance seems to be spawning before the old one exits (!!)
+
+ - but then also we see that the reconfiguration of the session
+   listener is "too quick" and doesn't wait for the old connections to
+   drop, so even if the line-reader instance correctly glitched out
+   the old connection, we'd still have a zombie reborn session to deal
+   with.