notes on POD-subnets (#391)

diff --git a/source/installguide/configuration.rst b/source/installguide/configuration.rst
index 049fe74..1ddc1e8 100644
--- a/source/installguide/configuration.rst
+++ b/source/installguide/configuration.rst
@@ -407,6 +407,9 @@
 #. In a new zone, CloudStack adds the first pod for you. You can always
    add more pods later. For an overview of what a pod is, see :ref:`about-pods`
 
+.. note::
+   The network described below must be a subnet of the physical network marked as type "management".
+
    To configure the first pod, enter the following, then click Next:
 
    -  **Pod Name.** A name for the pod.
@@ -602,6 +605,9 @@
 #. In a new zone, CloudStack adds the first pod for you. You can always
    add more pods later. For an overview of what a pod is, see :ref:`about-pods`
 
+.. note::
+   The network described below must be a subnet of the physical network marked as type "management".
+
    To configure the first pod, enter the following, then click Next:
 
    -  **Pod Name.** (Obligatory) A name for the pod.
@@ -850,6 +856,9 @@
       Secondary Storage VMs, Console Proxy VMs, and DHCP. For more
       information, see System Reserved IP Addresses.
 
+.. note::
+   * The network described above must be a subnet of the management network.
+
 #. Click OK.
 
 
diff --git a/source/quickinstallationguide/qig.rst b/source/quickinstallationguide/qig.rst
index 4183931..e2a85f9 100644
--- a/source/quickinstallationguide/qig.rst
+++ b/source/quickinstallationguide/qig.rst
@@ -730,6 +730,9 @@
 
 #. End Reserved system IP - we will use ``172.16.10.30`` # (or e.g. 192.168.1.30)
 
+.. note::
+   * The network described above must be a subnet of the management network.
+
 Click "Next" to continue.
 
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