diff --git a/pkg/apis/eksctl.io/v1alpha5/validation.go b/pkg/apis/eksctl.io/v1alpha5/validation.go
index de9e90893d..55fd50ab47 100644
--- a/pkg/apis/eksctl.io/v1alpha5/validation.go
+++ b/pkg/apis/eksctl.io/v1alpha5/validation.go
@@ -187,6 +187,10 @@ func (c *ClusterConfig) ValidateVPCConfig() error {
 			if c.KubernetesNetworkConfig != nil && c.KubernetesNetworkConfig.ServiceIPv4CIDR != "" {
 				return fmt.Errorf("service ipv4 cidr is not supported with IPv6")
 			}
+
+			if IsEnabled(c.VPC.AutoAllocateIPv6) {
+				return fmt.Errorf("auto allocate ipv6 is not supported with IPv6")
+			}
 		}
 	}
 
diff --git a/pkg/apis/eksctl.io/v1alpha5/validation_test.go b/pkg/apis/eksctl.io/v1alpha5/validation_test.go
index 1525939d4a..b3c240af66 100644
--- a/pkg/apis/eksctl.io/v1alpha5/validation_test.go
+++ b/pkg/apis/eksctl.io/v1alpha5/validation_test.go
@@ -563,26 +563,6 @@ var _ = Describe("ClusterConfig validation", func() {
 					Expect(err).ToNot(HaveOccurred())
 				})
 			})
-			When("ipFamily is set ot IPv6 but version is not or too low", func() {
-				It("returns an error", func() {
-					ipv6 := string(api.IPV6Family)
-					cfg.VPC.IPFamily = &ipv6
-					cfg.Addons = append(cfg.Addons,
-						&api.Addon{Name: api.KubeProxyAddon},
-						&api.Addon{Name: api.CoreDNSAddon},
-						&api.Addon{Name: api.VPCCNIAddon},
-					)
-					cfg.IAM = &api.ClusterIAM{
-						WithOIDC: api.Enabled(),
-					}
-					cfg.Metadata.Version = ""
-					err = cfg.ValidateVPCConfig()
-					Expect(err).To(MatchError(ContainSubstring("failed to convert  cluster version to semver: unable to parse first version")))
-					cfg.Metadata.Version = api.Version1_12
-					err = cfg.ValidateVPCConfig()
-					Expect(err).To(MatchError(ContainSubstring("cluster version must be >= 1.21")))
-				})
-			})
 			When("ipFamily is set ot IPv6 but version is not or too low", func() {
 				It("returns an error", func() {
 					ipv6 := string(api.IPV6Family)
@@ -693,6 +673,25 @@ var _ = Describe("ClusterConfig validation", func() {
 					Expect(err).To(MatchError(ContainSubstring("service ipv4 cidr is not supported with IPv6")))
 				})
 			})
+			When("ipFamily is set to IPv6 and AutoAllocateIPv6 is set", func() {
+				It("it returns an error", func() {
+					ipv6 := string(api.IPV6Family)
+					cfg.VPC.IPFamily = &ipv6
+					cfg.VPC.AutoAllocateIPv6 = api.Enabled()
+					cfg.Metadata.Version = api.Version1_22
+					cfg.IAM = &api.ClusterIAM{
+						WithOIDC: api.Enabled(),
+					}
+					cfg.Addons = append(cfg.Addons,
+						&api.Addon{Name: api.KubeProxyAddon},
+						&api.Addon{Name: api.CoreDNSAddon},
+						&api.Addon{Name: api.VPCCNIAddon},
+					)
+					cfg.VPC.NAT = nil
+					err = cfg.ValidateVPCConfig()
+					Expect(err).To(MatchError(ContainSubstring("auto allocate ipv6 is not supported with IPv6")))
+				})
+			})
 		})
 
 		Context("CIDRs", func() {
diff --git a/userdocs/src/usage/vpc-networking.md b/userdocs/src/usage/vpc-networking.md
index c24f1abf5f..35794077e4 100644
--- a/userdocs/src/usage/vpc-networking.md
+++ b/userdocs/src/usage/vpc-networking.md
@@ -57,6 +57,7 @@ This is an in config file setting only. When IPv6 is set, the following restrict
 - managed addons are defined as shows above
 - version must be => 1.21
 - `vpc.NAT` and `serviceIPv4CIDR` fields are created by eksctl for ipv6 clusters and thus, are not supported configuration options
+- AutoAllocateIPv6 is not supported together with IPv6
 
 The default value is `IPv4`.