shows only one ipv6 address per interface

This bug was originally filed in Launchpad as [LP: #1616616](https://bugs.launchpad.net/cloud-init/+bug/1616616)

Launchpad details

affected_projects = ['cloud-init (Ubuntu)']

assignee = None

assignee_name = None

date_closed = None

date_created = 2016-08-24T20:06:53.257240+00:00

date_fix_committed = None

date_fix_released = None

id = 1616616

importance = medium

is_complete = False

lp_url = https://bugs.launchpad.net/cloud-init/+bug/1616616

milestone = None

owner = smoser

owner_name = Scott Moser

private = False

status = confirmed

submitter = lamont

submitter_name = LaMont Jones

tags = []

duplicates = []

_Launchpad user **LaMont Jones(lamont)** wrote on 2016-08-24T20:06:53.257240+00:00_

With (self reported) version 0.7.7, when cloud-init displays the "Net device info", it only reports 1 each IPv4 and IPv6 address per interface, even if a second subnet has been configured on the interface (via ens3:1, for example). This can be confusing to someone working on network configuration related issues.

At the very minimum, it should show 1 IP per subnet, I expect.