diff --git a/Lib/urllib2.py b/Lib/urllib2.py
index a976533..b7f2cf4 100644
--- a/Lib/urllib2.py
+++ b/Lib/urllib2.py
@@ -1261,8 +1261,9 @@
     def get_names(self):
         if FileHandler.names is None:
             try:
-                FileHandler.names = (socket.gethostbyname('localhost'),
-                                    socket.gethostbyname(socket.gethostname()))
+                FileHandler.names = tuple(
+                    socket.gethostbyname_ex('localhost')[2] +
+                    socket.gethostbyname_ex(socket.gethostname())[2])
             except socket.gaierror:
                 FileHandler.names = (socket.gethostbyname('localhost'),)
         return FileHandler.names