diff --git a/content/cloud/network/index.md b/content/cloud/network/index.md
index 725ad1e9dfd371ed10565490dbc12ab0821777e6..99691f4016883830d264886231bc4b8c71ea0f99 100644
--- a/content/cloud/network/index.md
+++ b/content/cloud/network/index.md
@@ -240,6 +240,10 @@ Additional floating IP configuration is available in [official CLI documentation
 ### Obtaining IPv6 address
 Public IPv6 addresses are assigned via SLAAC. After assigning an interface in OpenStack to your instance, verify correct [configuration](/cloud/network/#interface-not-working) of your VM. You can assign interface by directly connecting your VM to the network (make sure you setup DNS records if you decide to use only IPv6) upon creation or by assigning secondary interface.
 
+{{< hint danger >}}
+Don't forget to update your [Security Groups](/cloud/network/#security-rules).
+{{< /hint  >}}
+
 {{< expand "Configuration using Horizon GUI" >}}
 Go to **Project &gt; Compute &gt;  Instances**. Click on the menu **Actions** on the instance you wish to change and click on **Attach interface**.