enables IPV6 (#4131)

Author: jeanschmidt

terraform-aws-github-runner/modules/runners-instances/security-groups.tf

@@ -9,10 +9,11 @@ resource "aws_security_group" "runners_sg" {
   vpc_id      = element(var.vpc_ids, count.index).vpc
 
   egress {
-    from_port   = 0
-    to_port     = 0
-    protocol    = "-1"
-    cidr_blocks = ["0.0.0.0/0"]
+    from_port        = 0
+    to_port          = 0
+    protocol         = "-1"
+    cidr_blocks      = ["0.0.0.0/0"]
+    ipv6_cidr_blocks = ["::/0"]
   }
   tags = merge(
     local.tags,

terraform-aws-github-runner/modules/runners/lambdas/runners/src/scale-runners/runners.test.ts

@@ -91,6 +91,7 @@ function createExpectedRunInstancesLinux(
     ],
     NetworkInterfaces: [
       {
+        Ipv6AddressCount: 1,
         AssociatePublicIpAddress: true,
         SubnetId: snetId,
         Groups: secGroup,
@@ -480,6 +481,7 @@ describe('createRunner', () => {
         ],
         NetworkInterfaces: [
           {
+            Ipv6AddressCount: 1,
             AssociatePublicIpAddress: true,
             SubnetId: snetId[0],
             Groups: secGroup,

terraform-aws-github-runner/modules/runners/lambdas/runners/src/scale-runners/runners.ts

@@ -352,6 +352,7 @@ export async function createRunner(runnerParameters: RunnerInputParameters, metr
                     ],
                     NetworkInterfaces: [
                       {
+                        Ipv6AddressCount: 1,
                         AssociatePublicIpAddress: true,
                         SubnetId: subnet,
                         Groups: securityGroupIds,