Resolve terraform list items by key

main.tf

resource "aws_vpc" "vpc" {
  cidr_block = "10.0.0.0/16"
}

resource "aws_vpn_gateway" "vpn_gateway" {
  vpc_id = "${aws_vpc.vpc.id}"
}

resource "aws_customer_gateway" "customer_gateway" {
  count      = "${length(var.vpn_resources)}"
  bgp_asn    = 65000
  type       = "ipsec.1"
  ip_address = "${lookup(var.vpn_resources[count.index], "ip")}"

  tags = {
    Name = "${lookup(var.vpn_resources[count.index], "name")}"
  }
}

resource "aws_vpn_connection" "main" {
  count               = "${length(var.vpn_resources)}"
  vpn_gateway_id      = "${aws_vpn_gateway.vpn_gateway.id}"
  customer_gateway_id = "${aws_customer_gateway.customer_gateway.*.id}"
  type                = "ipsec.1"
  static_routes_only  = true
}

variables.tf

variable "vpn_resources" {
  type = "list"

  default = [
    {
      name = "VPN1_NAME"
      ip   = "VPN1_IP"
    },
    {
      name = "VPN2_NAME"
      ip   = "VPN2_IP"
    },
  ]
}