Update aks-hci-network-system-requirements.md

Author: abhilashaagarwala

AKS-Hybrid/aks-hci-network-system-requirements.md

@@ -26,7 +26,8 @@ In this conceptual article, the following key components are introduced. These c
 Kubernetes nodes are deployed as specialized virtual machines in AKS enabled by Arc. These VMs are allocated IP addresses to enable communication between Kubernetes nodes. AKS Arc uses Azure Stack HCI logical networks to provide IP addresses and networking for the underlying VMs of the Kubernetes clusters. For more information about logical networks, see [Logical networks for Azure Stack HCI](/azure-stack/hci/manage/create-logical-networks?tabs=azurecli). You must plan to reserve one IP address per AKS cluster node VM in your Azure Stack HCI environment.
 
 > [!NOTE]
-> Static IP is the only supported mode for assigning an IP address to AKS Arc VMs. This is because Kubernetes requires the IP address assigned to a Kubernetes node to be constant throughout the lifecycle of the Kubernetes cluster.
+> Static IP is the only supported mode for assigning an IP address to AKS Arc VMs. This is because Kubernetes requires the IP address assigned to a Kubernetes node to be constant throughout the lifecycle of the Kubernetes cluster. 
+> Software defined virtual networks and SDN related features are currently not supported on AKS on Azure Stack HCI 23H2. 
 
 The following parameters are required in order to use a logical network for AKS Arc cluster create operation: