diff --git a/pybootd/tests/simple.py b/pybootd/tests/simple.py
new file mode 100755
index 0000000..a6dc405
--- /dev/null
+++ b/pybootd/tests/simple.py
@@ -0,0 +1,148 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2020, Emmanuel Blot <emmanuel.blot@free.fr>
+# All rights reserved.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+#pylint: disable-msg=empty-docstring
+#pylint: disable-msg=missing-docstring
+#pylint: disable-msg=invalid-name
+#pylint: disable-msg=global-statement
+
+from binascii import hexlify, unhexlify
+from io import StringIO
+from socket import (socket, timeout, AF_INET, SOCK_DGRAM, IPPROTO_UDP,
+                    SOL_SOCKET, SO_BROADCAST, SO_REUSEADDR)
+from sys import modules, stdout
+from textwrap import fill
+from time import sleep
+from unittest import TestCase, TestSuite, SkipTest, makeSuite, main as ut_main
+from pybootd.daemons import BootpDaemon
+from pybootd.util import EasyConfigParser, logger_factory
+
+
+class PxeSimpleTestCase(TestCase):
+    """Simple PXE test case.
+    """
+
+    @classmethod
+    def setUpClass(cls):
+        cls.logger = logger_factory(logtype='stdout',
+                                    level='DEBUG')
+        cfgparser = EasyConfigParser()
+        config = StringIO("""
+[bootpd]
+address = 0.0.0.0
+pool_start = 127.0.0.100
+pool_count = 5
+servername = localhost
+domain = localdomain
+server_name = debug
+lease_time = 86400
+access = mac
+allow_simple_dhcp = enable
+
+[bootfile]
+; BIOS boot file
+default = pxelinux.0
+
+[mac]
+00-0A-86-A2-2F-3E = enable
+            """)
+        cfgparser.read_file(config)
+        cls.config = cfgparser
+
+    def setUp(self):
+        self.server = BootpDaemon(logger=self.logger, config=self.config,
+                                  debug=True)
+        self.sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)
+        self.sock.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)
+        self.sock.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
+        self.sock.settimeout(1)
+        self.sock.bind(('', 68))
+        self.server.start()
+        # be sure the server can be scheduled and started before resuming
+        sleep(0.1)
+
+    def tearDown(self):
+        if self.sock:
+            self.sock.close() 
+        self.server.stop()
+
+    def test(self):
+        """Doc.
+        """
+        discover = """
+        010106002233445a0000800000000000000000000000000000000000000a86a22f3e
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000006382
+        5363ff00000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000
+        """
+
+        request = """
+        010106002233445a0000800000000000000000000000000000000000000a86a22f3e
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        0000000000003c24496e7465724e6963686520506f727461626c65205443502f4950
+        2c2076302e3042657461000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000ff6382
+        53633501033204c0a801190104ffffff000304c0a8013a3304000151803704010306
+        0f3604c0a8013a5106696e69636865000000000000000000340101ff000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000000000000000000000000000000000000000000000000000000000000000
+        00000000
+        """
+        for hexdata in (discover, request):
+            req = unhexlify(hexdata.replace(' ', '').replace('\n', ''))
+            self.sock.sendto(req, ('<broadcast>', 67))
+            try:
+                resp = self.sock.recv(1024)
+                print('response:\n',
+                      fill(hexlify(resp).decode(),
+                           initial_indent='  ',
+                           subsequent_indent='   '))
+            except timeout:
+                print('Timeout')
+
+def suite():
+    suite_ = TestSuite()
+    suite_.addTest(makeSuite(PxeSimpleTestCase, 'test'))
+    return suite_
+
+
+def main():
+    import doctest
+    doctest.testmod(modules[__name__])
+    try:
+        ut_main(defaultTest='suite')
+    except KeyboardInterrupt:
+        pass
+
+
+if __name__ == '__main__':
+    main()
diff --git a/pybootd/util.py b/pybootd/util.py
index 9a665d3..d6066b9 100644
--- a/pybootd/util.py
+++ b/pybootd/util.py
@@ -24,7 +24,7 @@ from re import match
 from socket import inet_aton, inet_ntoa
 from subprocess import run
 from struct import pack as spack, unpack as sunpack
-from sys import platform, stderr
+from sys import platform, stderr, stdout
 
 try:
     import netifaces as nif
@@ -138,6 +138,8 @@ def logger_factory(logtype='syslog', logfile=None, level='WARNING',
         hdlr = SysLogHandler('/dev/log')
     elif logtype in ('stderr'):
         hdlr = StreamHandler(stderr)
+    elif logtype in ('stdout'):
+        hdlr = StreamHandler(stdout)
     else:
         hdlr = BufferingHandler(0)