Rename thread to _thread and dummy_thread to _dummy_thread. Issue #2875.
diff --git a/Lib/telnetlib.py b/Lib/telnetlib.py
index db37200..33029e1 100644
--- a/Lib/telnetlib.py
+++ b/Lib/telnetlib.py
@@ -548,8 +548,8 @@
 
     def mt_interact(self):
         """Multithreaded version of interact()."""
-        import thread
-        thread.start_new_thread(self.listener, ())
+        import _thread
+        _thread.start_new_thread(self.listener, ())
         while 1:
             line = sys.stdin.readline()
             if not line: