diff --git a/libvirt-suse-netcontrol.patch b/libvirt-suse-netcontrol.patch
index 1cb9bcc..8e3fc30 100644
--- a/libvirt-suse-netcontrol.patch
+++ b/libvirt-suse-netcontrol.patch
@@ -145,6 +145,26 @@ Index: libvirt-1.2.13/src/interface/interface_backend_netcf.c
      /* open netcf */
      if (ncf_init(&driver->netcf, NULL) != 0) {
          virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+@@ -1146,6 +1186,19 @@ static virStateDriver interfaceStateDriv
+ 
+ int netcfIfaceRegister(void)
+ {
++    struct netcf *netcf;
++
++    /* Initialization of libnetcontrol will fail if NetworkManager is enabled.
++     * Skip registration if ncf_init fails.
++     * TODO: finer-grained check?  E.g. is_nm_enabled()
++     */
++    if (ncf_init(&netcf, NULL) != 0) {
++        VIR_WARN("Failed to intialize libnetcontrol.  Management of interface devices is disabled");
++        return 0;
++    }
++
++    ncf_close(netcf);
++
+     if (virSetSharedInterfaceDriver(&interfaceDriver) < 0)
+         return -1;
+     if (virRegisterStateDriver(&interfaceStateDriver) < 0)
 Index: libvirt-1.2.13/src/interface/interface_driver.c
 ===================================================================
 --- libvirt-1.2.13.orig/src/interface/interface_driver.c
diff --git a/libvirt.changes b/libvirt.changes
index 2bf41ab..594d1a9 100644
--- a/libvirt.changes
+++ b/libvirt.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Wed Mar 25 09:10:46 MDT 2015 - jfehlig@suse.com
+
+- Disable interface driver if libnetcontrol cannot be initialized
+  Modified libvirt-suse-netcontrol.patch
+  boo#920551
+
 -------------------------------------------------------------------
 Mon Mar 16 17:17:49 MDT 2015 - jfehlig@suse.com