[systemd-devel] systemd-nspawn and IPv6

[Lennart Poettering]

On Mon, 27.04.15 15:44, Dimitri John Ledkov (dimitri.j.ledkov at intel.com) wrote:

> > Well, networkd on the host automatically sets up IPv4 masquerading for
> > each container. We simply don't do anything equivalent for IPv6
> > currently.
> >
> > Ideally we wouldn't have to do NAT for IPv6 to make this work, and
> > instead would pass on some ipv6 subnet we acquired from uplink without
> > NAT to each container, but we currently don't have infrastructure for
> > that in networkd, and I am not even sure how this could really work,
> > my ipv6-fu is a bit too limited...
> >
> > or maybe we should do ipv6 nat after all, under the logic that
> > containers are just an implementation detail of the local host rather
> > than something to be made visible to the outside world. however code
> > for this exists neither.
> >
> > Or in other words: ipv6 setup needs some manual networking setup on
> > the host.
> 
> One should roll the dice and generate unique local address /48 prefix
> and use that to setup local addressing, ideally with
> autoconfigurations (e.g. derive a fake mac from container uuid and
> using the "hosts's" ULA prefix auto-assign ipv6 address)

Well, would that enable automatic, correcting routing between the
container and the host's external network? That's kinda what this all
is about...

Lennart

-- 
Lennart Poettering, Red Hat