r/aws_launch_template: Fix address count interface attributes

aws/resource_aws_launch_template.go

@@ -982,9 +982,12 @@ func readNetworkInterfacesFromConfig(ni map[string]interface{}) *ec2.LaunchTempl
 			Ipv6Address: aws.String(address.(string)),
 		})
 	}
-	networkInterface.Ipv6AddressCount = aws.Int64(int64(len(ipv6AddressList)))
 	networkInterface.Ipv6Addresses = ipv6Addresses
 
+	if v := ni["ipv6_address_count"].(int); v > 0 {
+		networkInterface.Ipv6AddressCount = aws.Int64(int64(v))
+	}
+
 	ipv4AddressList := ni["ipv4_addresses"].(*schema.Set).List()
 	for _, address := range ipv4AddressList {
 		privateIp := &ec2.PrivateIpAddressSpecification{
@@ -993,9 +996,12 @@ func readNetworkInterfacesFromConfig(ni map[string]interface{}) *ec2.LaunchTempl
 		}
 		ipv4Addresses = append(ipv4Addresses, privateIp)
 	}
-	networkInterface.SecondaryPrivateIpAddressCount = aws.Int64(int64(len(ipv4AddressList)))
 	networkInterface.PrivateIpAddresses = ipv4Addresses
 
+	if v := ni["ipv4_address_count"].(int); v > 0 {
+		networkInterface.SecondaryPrivateIpAddressCount = aws.Int64(int64(v))
+	}
+
 	return networkInterface
 }
 

website/docs/r/launch_template.html.markdown

@@ -200,15 +200,19 @@ The `monitoring` block supports the following:
 
 Attaches one or more [Network Interfaces](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html) to the instance.
 
+Check limitations for autoscaling group in [Creating an Auto Scaling Group Using a Launch Template Guide](https://docs.aws.amazon.com/autoscaling/ec2/userguide/create-asg-launch-template.html#limitations)
+
 Each `network_interfaces` block supports the following:
 
 * `associate_public_ip_address` - Associate a public ip address with the network interface.  Boolean value.
 * `delete_on_termination` - Whether the network interface should be destroyed on instance termination.
 * `description` - Description of the network interface.
 * `device_index` - The integer index of the network interface attachment.
 * `ipv6_addresses` - One or more specific IPv6 addresses from the IPv6 CIDR block range of your subnet.
+* `ipv6_address_count` - The number of IPv6 addresses to assign to a network interface. Conflicts with `ipv6_addresses`
 * `network_interface_id` - The ID of the network interface to attach.
 * `private_ip_address` - The primary private IPv4 address.
+* `ipv4_address_count` - The number of secondary private IPv4 addresses to assign to a network interface.
 * `ipv4_addresses` - One or more private IPv4 addresses to associate.
 * `security_groups` - A list of security group IDs to associate.
 * `subnet_id` - The VPC Subnet ID to associate.