diff --git a/neutron/openstack/common/rootwrap/cmd.py b/neutron/openstack/common/rootwrap/cmd.py
index 3ac8c5b23f6..aa47507162c 100644
--- a/neutron/openstack/common/rootwrap/cmd.py
+++ b/neutron/openstack/common/rootwrap/cmd.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 # vim: tabstop=4 shiftwidth=4 softtabstop=4
 
 # Copyright (c) 2011 OpenStack Foundation.
@@ -57,12 +56,21 @@ def _subprocess_setup():
 
 
 def _exit_error(execname, message, errorcode, log=True):
-    print("%s: %s" % (execname, message))
+    print("%s: %s" % (execname, message), file=sys.stderr)
     if log:
         logging.error(message)
     sys.exit(errorcode)
 
 
+def _getlogin():
+    try:
+        return os.getlogin()
+    except OSError:
+        return (os.getenv('USER') or
+                os.getenv('USERNAME') or
+                os.getenv('LOGNAME'))
+
+
 def main():
     # Split arguments, require at least a command
     execname = sys.argv.pop(0)
@@ -107,7 +115,7 @@ def main():
                                               exec_dirs=config.exec_dirs)
             if config.use_syslog:
                 logging.info("(%s > %s) Executing %s (filter match = %s)" % (
-                    os.getlogin(), pwd.getpwuid(os.getuid())[0],
+                    _getlogin(), pwd.getpwuid(os.getuid())[0],
                     command, filtermatch.name))
 
             obj = subprocess.Popen(command,
diff --git a/neutron/openstack/common/rootwrap/wrapper.py b/neutron/openstack/common/rootwrap/wrapper.py
index 16e3fbb3900..5786ac37777 100644
--- a/neutron/openstack/common/rootwrap/wrapper.py
+++ b/neutron/openstack/common/rootwrap/wrapper.py
@@ -16,12 +16,13 @@
 #    under the License.
 
 
-import ConfigParser
 import logging
 import logging.handlers
 import os
 import string
 
+from six import moves
+
 from neutron.openstack.common.rootwrap import filters
 
 
@@ -107,8 +108,9 @@ def load_filters(filters_path):
     for filterdir in filters_path:
         if not os.path.isdir(filterdir):
             continue
-        for filterfile in os.listdir(filterdir):
-            filterconfig = ConfigParser.RawConfigParser()
+        for filterfile in filter(lambda f: not f.startswith('.'),
+                                 os.listdir(filterdir)):
+            filterconfig = moves.configparser.RawConfigParser()
             filterconfig.read(os.path.join(filterdir, filterfile))
             for (name, value) in filterconfig.items("Filters"):
                 filterdefinition = [string.strip(s) for s in value.split(',')]