Issue #8184: multiprocessing: On Windows, don't set SO_REUSEADDR on Connection
sockets, and set FILE_FLAG_FIRST_PIPE_INSTANCE on named pipes, to make sure two
listeners can't bind to the same socket/pipe (or any existing socket/pipe).
diff --git a/Misc/NEWS b/Misc/NEWS
index 6338555..7367e1a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -472,6 +472,11 @@
 
 - Issue #13846: Add time.monotonic(), monotonic clock.
 
+- Issue #8184: multiprocessing: On Windows, don't set SO_REUSEADDR on
+  Connection sockets, and set FILE_FLAG_FIRST_PIPE_INSTANCE on named pipes, to
+  make sure two listeners can't bind to the same socket/pipe (or any existing
+  socket/pipe).
+
 - Issue #10811: Fix recursive usage of cursors. Instead of crashing,
   raise a ProgrammingError now.