diff --git a/doc/source/admin/config-qos.rst b/doc/source/admin/config-qos.rst
index 084814d1d4e..23c456f0ec8 100644
--- a/doc/source/admin/config-qos.rst
+++ b/doc/source/admin/config-qos.rst
@@ -136,6 +136,16 @@ On the network and compute nodes:
       [agent]
       extensions = qos
 
+#. As rate limit doesn't work on Open vSwitch's ``internal`` ports,
+   optionally, as a workaround, to make QoS bandwidth limit work on
+   router's gateway ports, set ``ovs_use_veth`` to ``True`` in ``DEFAULT``
+   section in ``/etc/neutron/l3_agent.ini``
+
+  .. code-block:: ini
+
+      [DEFAULT]
+      ovs_use_veth = True
+
 .. note::
 
    QoS currently works with ml2 only (SR-IOV, Open vSwitch, and linuxbridge
diff --git a/neutron/conf/agent/common.py b/neutron/conf/agent/common.py
index 6f0fd91dc87..7052f1791b3 100644
--- a/neutron/conf/agent/common.py
+++ b/neutron/conf/agent/common.py
@@ -54,10 +54,11 @@ INTERFACE_OPTS = [
                help=_('Name of Open vSwitch bridge to use')),
     cfg.BoolOpt('ovs_use_veth',
                 default=False,
-                help=_('Uses veth for an OVS interface or not. '
-                       'Support kernels with limited namespace support '
-                       '(e.g. RHEL 6.5) so long as ovs_use_veth is set to '
-                       'True.')),
+                help=_("Uses veth for an OVS interface or not. "
+                       "Support kernels with limited namespace support "
+                       "(e.g. RHEL 6.5) and rate limiting on router's gateway "
+                       "port so long as ovs_use_veth is set to "
+                       "True.")),
 ]