Add IPv6 regional network LB support (#902)

This adds support for IPV6 network LBs.
These can only be used if all cluster nodes are fully dual stack enabled.

Author: gottwald

CHANGELOG.md

@@ -1,6 +1,9 @@
 ## unreleased
 
 * Add public ipv6 node address handling (@gottwald)
+* Add automatic dual-stack support for REGIONAL_NETWORK load balancers when all cluster nodes support dual-stack networking (@gottwald)
+* Add node filtering to load balancers: only LB-Ready nodes with appropriate IP addresses are included in load balancers (@gottwald)
+* Emit Kubernetes events when load balancer configuration errors occur (e.g., explicit dual-stack annotation with IPv4-only nodes) (@gottwald)
 
 ## v0.1.65 (beta) - January 14, 2026
 

cloud-controller-manager/do/certificates_test.go

@@ -312,21 +312,9 @@ func Test_LBaaSCertificateScenarios(t *testing.T) {
 	}
 
 	nodes := []*v1.Node{
-		{
-			ObjectMeta: metav1.ObjectMeta{
-				Name: "node-1",
-			},
-		},
-		{
-			ObjectMeta: metav1.ObjectMeta{
-				Name: "node-2",
-			},
-		},
-		{
-			ObjectMeta: metav1.ObjectMeta{
-				Name: "node-3",
-			},
-		},
+		newNodeWithIPs("node-1", "10.0.0.1", "2001:db8::1", true),
+		newNodeWithIPs("node-2", "10.0.0.2", "2001:db8::2", true),
+		newNodeWithIPs("node-3", "10.0.0.3", "2001:db8::3", true),
 	}
 	droplets := []godo.Droplet{
 		{