The aws_vpc_peering_connection datasource does not support IPv6 CIDR blocks

[SpComb]

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Description

The aws_vpc_peering_connection datasource only supports the IPv4 CIDR block/blocks of a VPC peering connection, but VPC peering connections can also involve IPv6 CIDR blocks.

The necessary information is present in the DescribeVpcPeeringConnections -> VpcPeeringConnectionVpcInfo -> ipv6CidrBlockSet field.

New or Affected Resource(s)

• data.aws_vpc_peering_connection new ipv6_cidr_block_set and peer_ipv6_cidr_block_set attributes

Potential Terraform Configuration

The aws_vpc_peering_connection datasource is useful for automatically configuring the aws_route resources for a VPC peering connection, but setting up the VPC routes for a dual-stack IPv4/IPv6 VPC peering connection currently requires the peer VPC IPv6 CIDR blocks to be provided manually as variables.

data "aws_vpc_peering_connection" "peer" {
  id     = var.pcx_id
  status = "active"
}

resource "aws_route" "private-peer" {
  for_each = var.vpc_private_route_table_ids

  route_table_id            = each.value
  destination_cidr_block    = data.aws_vpc_peering_connection.peer.peer_cidr_block
  vpc_peering_connection_id = var.pcx_id
}

resource "aws_route" "private-peer6" {
  for_each = var.vpc_private_route_table_ids

  route_table_id              = each.value
  destination_ipv6_cidr_block = data.aws_vpc_peering_connection.peer.peer_ipv6_cidr_block_set[0].cidr_block
  vpc_peering_connection_id   = var.pcx_id
}

[github-actions]

This functionality has been released in v5.42.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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