diff --git a/clr-k8s-examples/9-multi-network/README.md b/clr-k8s-examples/9-multi-network/README.md
index 7727ca5..be1bc4e 100644
--- a/clr-k8s-examples/9-multi-network/README.md
+++ b/clr-k8s-examples/9-multi-network/README.md
@@ -17,7 +17,7 @@ file is provided, which enables SR-IOV for the above `rootDevices`
 
 ### Pre-req (SR-IOV only)
 
-One each SR-IOV node make sure `VT-d` is enabled in the BIOS.
+One each SR-IOV node make sure `VT-d` is enabled in the BIOS and `intel_iommu=on` on kernel commandline.
 Setup systemd to bring up VFs on designated interfaces bound to network driver or `vfio-pci`
 
 ```bash