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add flag for ipv6 #10

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add flag for ipv6 #10

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13 changes: 7 additions & 6 deletions main.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@ resource "aws_vpc" "default" {
cidr_block = var.cidr_block
enable_dns_support = true
enable_dns_hostnames = true
assign_generated_ipv6_cidr_block = true
assign_generated_ipv6_cidr_block = var.ipv6_enabled

tags = merge(
{
Expand Down Expand Up @@ -61,7 +61,7 @@ resource "aws_route" "private" {


resource "aws_route" "ipv6_private" {
count = length(var.private_subnet_cidr_blocks)
count = var.ipv6_enabled ? length(var.private_subnet_cidr_blocks) : 0

route_table_id = aws_route_table.private[count.index].id
destination_ipv6_cidr_block = "::/0"
Expand All @@ -86,6 +86,7 @@ resource "aws_route" "public" {
}

resource "aws_route" "ipv6_public" {
count = var.ipv6_enabled ? 1 : 0
route_table_id = aws_route_table.public.id
destination_ipv6_cidr_block = "::/0"
gateway_id = aws_internet_gateway.default.id
Expand All @@ -95,12 +96,12 @@ resource "aws_subnet" "private" {
count = length(var.private_subnet_cidr_blocks)

vpc_id = aws_vpc.default.id
assign_ipv6_address_on_creation = true
assign_ipv6_address_on_creation = var.ipv6_enabled
cidr_block = var.private_subnet_cidr_blocks[count.index]
enable_dns64 = true
enable_resource_name_dns_aaaa_record_on_launch = true
enable_resource_name_dns_a_record_on_launch = true
ipv6_cidr_block = cidrsubnet(aws_vpc.default.ipv6_cidr_block, 8, var.private_subnet_ipv6_prefix_indices[count.index])
ipv6_cidr_block = var.ipv6_enabled ? cidrsubnet(aws_vpc.default.ipv6_cidr_block, 8, var.private_subnet_ipv6_prefix_indices[count.index]) : null
availability_zone = var.availability_zones[count.index]
private_dns_hostname_type_on_launch = "resource-name"

Expand All @@ -116,12 +117,12 @@ resource "aws_subnet" "public" {
count = length(var.public_subnet_cidr_blocks)

vpc_id = aws_vpc.default.id
assign_ipv6_address_on_creation = true
assign_ipv6_address_on_creation = var.ipv6_enabled
cidr_block = var.public_subnet_cidr_blocks[count.index]
enable_dns64 = true
enable_resource_name_dns_aaaa_record_on_launch = true
enable_resource_name_dns_a_record_on_launch = true
ipv6_cidr_block = cidrsubnet(aws_vpc.default.ipv6_cidr_block, 8, var.public_subnet_ipv6_prefix_indices[count.index])
ipv6_cidr_block = var.ipv6_enabled ? cidrsubnet(aws_vpc.default.ipv6_cidr_block, 8, var.public_subnet_ipv6_prefix_indices[count.index]) : null
availability_zone = var.availability_zones[count.index]
map_public_ip_on_launch = true
private_dns_hostname_type_on_launch = "resource-name"
Expand Down
6 changes: 6 additions & 0 deletions variables.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,12 @@ variable "public_subnet_cidr_blocks" {
description = "A list of CIDR ranges for public subnets."
}

variable "ipv6_enabled" {
type = bool
default = true
description = "value"
}

variable "public_subnet_ipv6_prefix_indices" {
type = list(number)
default = [0, 2]
Expand Down
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