diff --git a/INSTALL b/INSTALL
index 44088b6bdf26f53f8c45ba2709425deebf4dc8dc..a2b9cc5f924543ac159197c99d43a0b7b1be95fc 100644
--- a/INSTALL
+++ b/INSTALL
@@ -49,6 +49,9 @@ Before installing, please verify that you have the following programs:
   if running on python 2.4 (optional, used by the ``ovfconverter`` tool)
 - `qemu-img <http://qemu.org/>`_, if you want to use ``ovfconverter``
 - `fping <http://fping.sourceforge.net/>`_
+- `Python IP address manipulation library
+  <http://code.google.com/p/ipaddr-py/>`_
+- `Bitarray Python library <http://pypi.python.org/pypi/bitarray/>`_
 
 These programs are supplied as part of most Linux distributions, so
 usually they can be installed via the standard package manager. Also
diff --git a/configure.ac b/configure.ac
index 7192773c00ac02105c99cd7aa0241b00e22695db..7bf9580187f40d85c849ed09914c30f2393479bf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -720,6 +720,8 @@ AC_PYTHON_MODULE(simplejson, t)
 AC_PYTHON_MODULE(pyparsing, t)
 AC_PYTHON_MODULE(pyinotify, t)
 AC_PYTHON_MODULE(pycurl, t)
+AC_PYTHON_MODULE(bitarray, t)
+AC_PYTHON_MODULE(ipaddr, t)
 AC_PYTHON_MODULE(affinity)
 AC_PYTHON_MODULE(paramiko)