Issue 5177: use socket.SO_REUSEADDR on multiprocessing SocketManager sockets
diff --git a/Lib/multiprocessing/connection.py b/Lib/multiprocessing/connection.py
index 1f05658..59beaa0 100644
--- a/Lib/multiprocessing/connection.py
+++ b/Lib/multiprocessing/connection.py
@@ -214,6 +214,7 @@
     '''
     def __init__(self, address, family, backlog=1):
         self._socket = socket.socket(getattr(socket, family))
+        self._socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
         self._socket.bind(address)
         self._socket.listen(backlog)
         self._address = self._socket.getsockname()