Bug#816600: postinst: IPv6 address is not displayed in 'Start SSH' invitation

[Dimitri John Ledkov <dimitri.ledkov@canonical.com>]

On Thu, Mar 3, 2016 at 11:12 AM, Hendrik Brueckner
<brueckner@linux.vnet.ibm.com> wrote:
> Package: network-console
> Version: 1.53
> Severity: normal
> Tags: d-i patch
>
> Dear Maintainer,
>
> in IPv6-only environments, the "Start SSH" invitation does not include
> the IPv6 address to log in to the installer system.  Below is a patch
> that extends the postinst script to detect an IPv6 address if no IPv4
> address could be found.
>

To be honest, I don't think it's only about IPv6-only environments.
A person performing the installation may only be on IPv6 link-local,
IPv6 autoconfigure, IPv4, only, whilst the machine to be installed has
dual-stack / all combos.
Unusual, true, but totally possible.

Thus, I think, we should enumerate all IP addresses, sans loopback,
and display them all.

-- 
Regards,

Dimitri.