Bug#530763: linux-image-2.6.26-2-vserver-686: Weird IPv6 routing in vserver guests

[Pierre Tourbeaux <contact@si7v.fr>]

Le mardi 13 septembre 2011 à 02:56 -0500, Jonathan Nieder a écrit :
> Hi Pierre,
> 
> Pierre Tourbeaux wrote:
> 
> > I have a strange problem of IPv6 routing inside my vserver guests.
> [...]
> > So, the services hosted on this guest are reachable from IPv6 hosts, this is OK.
> > But, when I initiate a connection from the guest to an external host in IPv6,
> > the source IP is 2001:6f8:202:291::2 and not 2001:6f8:33c::3. This is like
> > NAT in IPv6, something goes wrong...
> >
> > I had a full working setup before upgrading in Lenny. I was on Etch with
> > util-vserver from backports.org (0.30.216~r2772-6~bpo40+1) and the following
> > kernel : http://files.si7v.fr/kernel/2.6.22.19-vserver-ipv6/ to have Vserver
> > IPv6 support.
> >
> > Feel free to change my bug report if it concerns the package util-vserver. I
> > don't know if it's kernel related.
> 
> Sorry for the long delay.  A few questions (please forgive my
> ignorance):
> 
>  - does running an older or newer kernel on the host help (this would
>    rule out a userspace problem)?
>  - what does "iptables --list" on the host say?
>  - if this is reproducible with a recent kernel (or even if not), any
>    hints for someone trying to reproduce it?  Step by step
>    instructions for starting from a fresh Debian installation to
>    experiencing the bug would be best.

Hello.

Sorry, but the host is now upgraded in Debian Squeeze and the bug
doesn't came up. I think that the new linux-vserver kernel of Squeeze
fixed this problem.

Regards,
Pierre Tourbeaux