diff --git a/libvirt-0.7.0-handle-kernels-with-no-ipv6-support.patch b/libvirt-0.7.0-handle-kernels-with-no-ipv6-support.patch
new file mode 100644
index 0000000..61c4b2f
--- /dev/null
+++ b/libvirt-0.7.0-handle-kernels-with-no-ipv6-support.patch
@@ -0,0 +1,39 @@
+From: Mark McLoughlin <markmc@redhat.com>
+Subject: [PATCH] Handle kernels with no ipv6 support
+
+If the ipv6 kernel module is not loaded, then we get this when starting
+a virtual network:
+
+  libvir: Network Config error :
+  cannot enable /proc/sys/net/ipv6/conf/virbr0/disable_ipv6:
+  No such file or directory
+
+If disable_ipv6 is not present, we should just merrily continue on our
+way.
+
+* src/network_driver.c: make networkDisableIPV6() not fail if the kernel
+  has no ipv6 support
+---
+ src/network_driver.c |    6 ++++++
+ 1 files changed, 6 insertions(+), 0 deletions(-)
+
+diff --git a/src/network_driver.c b/src/network_driver.c
+index eaea454..84910ab 100644
+--- a/src/network_driver.c
++++ b/src/network_driver.c
+@@ -801,6 +801,12 @@ static int networkDisableIPV6(virConnectPtr conn,
+         goto cleanup;
+     }
+ 
++    if (access(field, W_OK) < 0 && errno == ENOENT) {
++        VIR_DEBUG("ipv6 appears to already be disabled on %s", network->def->bridge);
++        ret = 0;
++        goto cleanup;
++    }
++
+     if (virFileWriteStr(field, "1") < 0) {
+         virReportSystemError(conn, errno,
+                              _("cannot enable %s"), field);
+-- 
+1.6.2.5
+
diff --git a/libvirt.spec b/libvirt.spec
index 7a8da9b..aea293f 100644
--- a/libvirt.spec
+++ b/libvirt.spec
@@ -78,7 +78,7 @@
 Summary: Library providing a simple API virtualization
 Name: libvirt
 Version: 0.7.0
-Release: 2%{?dist}%{?extra_release}
+Release: 3%{?dist}%{?extra_release}
 License: LGPLv2+
 Group: Development/Libraries
 Source: libvirt-%{version}.tar.gz
@@ -86,6 +86,9 @@ Source: libvirt-%{version}.tar.gz
 # Make sure qemu can access kernel/initrd (bug #516034)
 Patch01: libvirt-0.7.0-chown-kernel-initrd-before-spawning-qemu.patch
 
+# Don't fail to start network if ipv6 modules is not loaded
+Patch02: libvirt-0.7.0-handle-kernels-with-no-ipv6-support.patch
+
 # Temporary hack till PulseAudio autostart problems are sorted
 # out when SELinux enforcing (bz 486112)
 Patch200: libvirt-0.6.4-svirt-sound.patch
@@ -256,6 +259,7 @@ of recent versions of Linux (and other OSes).
 %setup -q
 
 %patch01 -p1
+%patch02 -p1
 
 %patch200 -p0
 
@@ -617,6 +621,9 @@ fi
 %endif
 
 %changelog
+* Mon Aug 10 2009 Mark McLoughlin <markmc@redhat.com> - 0.7.0-3
+- Don't fail to start network if ipv6 modules is not loaded
+
 * Thu Aug  6 2009 Mark McLoughlin <markmc@redhat.com> - 0.7.0-2
 - Make sure qemu can access kernel/initrd (bug #516034)
 - Set perms on /var/lib/libvirt/boot to 0711 (bug #516034)