Patch #1678662: ftp.python.org does not exist. So the testcode in urllib.py must use a more
stable FTP.
Backported from r54278.
diff --git a/Lib/urllib.py b/Lib/urllib.py
index 4a1fa64..9fbb19a 100644
--- a/Lib/urllib.py
+++ b/Lib/urllib.py
@@ -1471,7 +1471,7 @@
             '/etc/passwd',
             'file:/etc/passwd',
             'file://localhost/etc/passwd',
-            'ftp://ftp.python.org/pub/python/README',
+            'ftp://ftp.gnu.org/pub/README',
 ##          'gopher://gopher.micro.umn.edu/1/',
             'http://www.python.org/index.html',
             ]