Sort private ips for an AWS instance in Terraform

[Joe6547654]

Hi, I am using terraform to create an instance with multiple ips in AWS. I specified a list of private_ips in the network interface block and I made sure the one I wanted as primary ip was listed first on the list, however it does not respect that order when I create the instance in AWS. Order doesn't change even when when I change the ips around. I also tried setting with private_ip for the primary ip and private_ips for secondary ips, but it doesn't work.

Terraform Version: 0.9.6

Affected Resource(s)

• aws_instance
• aws_network_interface

Terraform Configuration Files

resource "aws_network_interface" "test" {
	subnet_id = "subnet-xxxxxxx"
	private_ips = ["172.24.3.249", "172.24.3.250", "172.24.3.5", "172.24.3.9", "172.24.3.13"]
}
resource "aws_instance" "test" {
	ami = "ami-xxxxxxxx" 	
	instance_type = "m4.2xlarge"
	key_name = "name"
	network_interface {
	network_interface_id = "${aws_network_interface.test.id}"
	device_index = 0
	}
}

Expected Behavior

The first ip address on the list will appear as the primary ip, and the rest as the secondary ips.

Actual Behavior

"172.24.3.5" becomes the primary instead of the first ip on the list. It does not change even if we switch the order of the ips.

References

Are there any other GitHub issues (open or closed) or Pull Requests that should be linked here? For example:

• Sort the list of private_ips #6986

[ghost]

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