diff --git a/autofs-5.0.4-use-misc-device.patch b/autofs-5.0.4-use-misc-device.patch
new file mode 100644
index 0000000..edf04ef
--- /dev/null
+++ b/autofs-5.0.4-use-misc-device.patch
@@ -0,0 +1,52 @@
+autofs-5.0.4 - use misc device
+
+From: Ian Kent <raven@themaw.net>
+
+Change default installed configuration to use the misc device ioctl
+interface if available.
+---
+
+ CHANGELOG                      |    1 +
+ redhat/autofs.sysconfig.in     |    2 +-
+ samples/autofs.conf.default.in |    2 +-
+ 3 files changed, 3 insertions(+), 2 deletions(-)
+
+
+diff --git a/CHANGELOG b/CHANGELOG
+index da7ecbf..234e1e0 100644
+--- a/CHANGELOG
++++ b/CHANGELOG
+@@ -32,6 +32,7 @@
+ - another easy alloca replacements fix.
+ - add LSB init script parameter block.
+ - fix file map lookup when reading included or nsswitch sources.
++- use misc device ioctl interface by default, if available.
+ 
+ 4/11/2008 autofs-5.0.4
+ -----------------------
+diff --git a/redhat/autofs.sysconfig.in b/redhat/autofs.sysconfig.in
+index 04e521c..97e20fe 100644
+--- a/redhat/autofs.sysconfig.in
++++ b/redhat/autofs.sysconfig.in
+@@ -110,7 +110,7 @@ BROWSE_MODE="no"
+ # If the kernel supports using the autofs miscellanous device
+ # and you wish to use it you must set this configuration option
+ # to "yes" otherwise it will not be used.
+-#USE_MISC_DEVICE="no"
++USE_MISC_DEVICE="yes"
+ #
+ #OPTIONS=""
+ #
+diff --git a/samples/autofs.conf.default.in b/samples/autofs.conf.default.in
+index 52d18ec..62084c2 100644
+--- a/samples/autofs.conf.default.in
++++ b/samples/autofs.conf.default.in
+@@ -110,7 +110,7 @@ BROWSE_MODE="no"
+ # If the kernel supports using the autofs miscellanous device
+ # and you wish to use it you must set this configuration option
+ # to "yes" otherwise it will not be used.
+-#USE_MISC_DEVICE="no"
++USE_MISC_DEVICE="yes"
+ #
+ #OPTIONS=""
+ #
diff --git a/autofs.spec b/autofs.spec
index 7294da7..775b0ad 100644
--- a/autofs.spec
+++ b/autofs.spec
@@ -4,7 +4,7 @@
 Summary: A tool for automatically mounting and unmounting filesystems
 Name: autofs
 Version: 5.0.4
-Release: 21
+Release: 22
 Epoch: 1
 License: GPLv2+
 Group: System Environment/Daemons
@@ -42,6 +42,7 @@ Patch29: autofs-5.0.4-fix-double-free-in-expire_proc.patch
 Patch30: autofs-5.0.4-another-easy-alloca-replacements-fix.patch
 Patch31: autofs-5.0.4-add-lsb-init-script-parameter-block.patch
 Patch32: autofs-5.0.4-always-read-file-maps-fix.patch
+Patch33: autofs-5.0.4-use-misc-device.patch
 Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires: autoconf, hesiod-devel, openldap-devel, bison, flex, libxml2-devel, cyrus-sasl-devel, openssl-devel module-init-tools util-linux nfs-utils e2fsprogs libtirpc-devel
 Requires: kernel >= 2.6.17
@@ -115,6 +116,7 @@ echo %{version}-%{release} > .version
 %patch30 -p1
 %patch31 -p1
 %patch32 -p1
+%patch33 -p1
 
 %build
 #CFLAGS="$RPM_OPT_FLAGS" ./configure --prefix=/usr --libdir=%{_libdir}
@@ -167,6 +169,9 @@ fi
 %{_libdir}/autofs/
 
 %changelog
+* Wed Mar 18 2009 Ian Kent <ikent@redhat.com> - 1:5.0.4-22
+- use misc device ioctl interface by default, if available.
+
 * Tue Mar 17 2009 Ian Kent <ikent@redhat.com> - 1:5.0.4-21
 - fix file map lookup when reading included or nsswitch sources.
   - a regression introduced by file map lookup optimisation in rev 9.