Ubuntu 16.04

[Mikael Abrahamsson]

On Sat, 23 Apr 2016, Tore Anderson wrote:

> I was able to reproduce the issue. I'm guessing you're using a wired
> ethernet with no explicitly saved connection profile? When NM
> auto-creates an ephemeral connection profile, it gets an equally
> ephemeral UUID. The RFC7217 implementation in NM derives the UUID from
> the connection profile (amongst other things), which means the results
> of the algorithm - the IID - isn't stable at all.
>
> https://bugzilla.gnome.org/show_bug.cgi?id=765464
>
> You can work around this by saving the connection profile, e.g.:
>
> $ nmcli con edit 'Wired connection 1' # the name might be localised
> nmcli> save
>
> Alternatively, if you don't want RFC7212 addresses at all and prefer
> the previous behaviour, you can do:
>
> nmcli> set ipv6.addr-gen-mode eui64

This worked for me perfectly, and restored the old behavor so I get an 
EUI64 address. Thanks!

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se