I want create an Launch Config/Auto Scaling Group to build instances inside an VPC with two subnets ("frontend" and "backend")

I need that this instances have two ifaces. One in "frontend" subnet and one in "backend" subnet.

I can't see how do that. It's no posible from AWS console and neither with aws cli.

http://docs.aws.amazon.com/cli/latest/reference/autoscaling/create-launch-configuration.html http://docs.aws.amazon.com/cli/latest/reference/autoscaling/create-auto-scaling-group.html

Launch Config don't say nothing about this.

http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/create-lc-with-instanceID.html

Ideas?

Thanks!!!