how to attach extra private ips to an ec2 instance

[Kesten Broughton]

I've looked at modules 

ec2         create an instance and attach it to an interface_id or add one private and or one public ip

ec2_eip  attach extra public ips

ec2_eni  attach extra ethernet interfaces

I'm trying to attach extra private ips (routable within a vpc) to a virtual eth0:1, eth0:2 to an ec2 host (running docker).   Is there any existing module that can do this?

Using boto i can

from import import ec2

c = ec2.connect_to_region(aws_region)

c.ec2.assign_private_ip_addresses(network_interface_id=myid.id,secondary_private_ip_address_count=2,allow_reassignment=True)

This is basically what I want to accomplish.  I believe if my instance is already attached to the appropriate subnet then I can do it from the instance side alone, but that assign_private_ip_addresses manages the pool so i don't accidentally attach the same ip to different instances.

Has anybody done this?  If not, would any of the above modules accept a PR for such?

kesten