diff --git a/content/en/docs/concepts/services-networking/dual-stack.md b/content/en/docs/concepts/services-networking/dual-stack.md
index f02f73cb061ad..5f911e2731830 100644
--- a/content/en/docs/concepts/services-networking/dual-stack.md
+++ b/content/en/docs/concepts/services-networking/dual-stack.md
@@ -51,6 +51,7 @@ To enable IPv4/IPv6 dual-stack, enable the `IPv6DualStack` [feature gate](/docs/
       * `--feature-gates="IPv6DualStack=true"`
       * `--cluster-cidr=<IPv4 CIDR>,<IPv6 CIDR>` eg. `--cluster-cidr=10.244.0.0/16,fc00::/24`
       * `--service-cluster-ip-range=<IPv4 CIDR>,<IPv6 CIDR>`
+      * `--node-cidr-mask-size-ipv4|--node-cidr-mask-size-ipv6` defaults to /24 for IPv4 and /64 for IPv6
    * kubelet:
       * `--feature-gates="IPv6DualStack=true"`
    * kube-proxy:
@@ -105,9 +106,8 @@ The use of publicly routable and non-publicly routable IPv6 address blocks is ac
 
 ## Known Issues
 
-   * IPv6 network block assignment uses the default IPv4 CIDR block size (/24)
    * Kubenet forces IPv4,IPv6 positional reporting of IPs (--cluster-cidr)
-   
+
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