House cleaning

python/pipeline/util.py

@@ -39,7 +39,7 @@ class AvailablePortGenerator(object):
     def port_is_available(port):
         with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as sock:
             sock.settimeout(2)
-            result = sock.connect_ex(('0.0.0.0', port))
+            result = sock.connect_ex(('127.0.0.1', port))
         if result != 0:
             return True
         else: