diff --git a/virt/virt-4-13-release-notes.adoc b/virt/virt-4-13-release-notes.adoc
index e976116903a0..6d71973796d7 100644
--- a/virt/virt-4-13-release-notes.adoc
+++ b/virt/virt-4-13-release-notes.adoc
@@ -223,6 +223,8 @@ link:https://access.redhat.com/support/offerings/techpreview[Technology Preview
 [id="virt-4-13-known-issues"]
 == Known issues
 
+You cannot run {VirtProductName} on a single-stack IPv6 cluster. (link:https://bugzilla.redhat.com/show_bug.cgi?id=2193267[*BZ#2193267*])
+
 * When you use two pods with different SELinux contexts, VMs with the `ocs-storagecluster-cephfs` storage class fail to migrate and the VM status changes to `Paused`. This is because both pods try to access the shared `ReadWriteMany` CephFS volume at the same time. (link:https://bugzilla.redhat.com/show_bug.cgi?id=2092271[*BZ#2092271*])
 ** As a workaround, use the `ocs-storagecluster-ceph-rbd` storage class to live migrate VMs on a cluster that uses Red Hat Ceph Storage.