resource "aws_dx_gateway" "example" {
  amazon_side_asn = "64512"
  name = "example"
}

resource "aws_dx_gateway_association" "example" {
  allowed_prefixes = ["10.255.255.0/30", "10.255.255.8/30"]
  associated_gateway_id = aws_ec2_transit_gateway.example.id
  dx_gateway_id = aws_dx_gateway.example.id
}

resource "aws_ec2_transit_gateway" "example" {
}