feat: add support for IPv6

lib/kitchen/driver/aws/instance_generator.rb

@@ -173,6 +173,9 @@ def ec2_instance_data
             if config[:security_group_ids]
               i[:network_interfaces][0][:groups] = i.delete(:security_group_ids)
             end
+            if config[:associate_ipv6]
+              i[:network_interfaces][0][:ipv_6_address_count] = 1
+            end
           end
           availability_zone = config[:availability_zone]
           if availability_zone

lib/kitchen/driver/ec2.rb

@@ -85,6 +85,7 @@ class Ec2 < Kitchen::Driver::Base
       default_config :image_search,       nil
       default_config :username,           nil
       default_config :associate_public_ip, nil
+      default_config :associate_ipv6,      nil
       default_config :interface,           nil
       default_config :http_proxy,          ENV["HTTPS_PROXY"] || ENV.fetch("HTTP_PROXY", nil)
       default_config :retry_limit,         3

spec/kitchen/driver/aws/instance_generator_spec.rb

@@ -542,6 +542,35 @@
         )
       end
 
+      context "and associate_ipv6 is provided" do
+        let(:config) do
+          {
+            region: "us-east-1",
+            associate_public_ip: true,
+            associate_ipv6: true,
+          }
+        end
+
+        it "adds a network_interfaces block" do
+          expect(generator.ec2_instance_data).to eq(
+            instance_type: nil,
+            ebs_optimized: nil,
+            image_id: nil,
+            key_name: nil,
+            subnet_id: nil,
+            private_ip_address: nil,
+            network_interfaces: [{
+              device_index: 0,
+              associate_public_ip_address: true,
+              ipv_6_address_count: 1,
+              delete_on_termination: true,
+            }],
+            max_count: 1,
+            min_count: 1
+          )
+        end
+      end
+
       context "and subnet is provided" do
         let(:config) do
           {