Hi Bjorn,
On Sat, Jul 9, 2016, at 23:13, Bjørn Mork wrote:
> The Juniper SSL VPN client use a "tun" interface and seems to
> be picky about visible changes.to it. Commit cc9da6cc4f56
> ("ipv6: addrconf: use stable address generator for ARPHRD_NONE")
> made such interfaces get an auto-generated IPv6 link local address
> by default, similar to most other interface types. This made the
> Juniper SSL VPN client fail for unknown reasons.
>
> Fixing this regression by effectively reverting the behaviour to
> what we had before, while keeping the new "addrgenmode random"
> feature.
I wonder if we can simply add a flag, something like
IFF_SUPPRESS_AUTO_IPV6_LL, to net_device->priv_flags and use that. So we
can keep behavior for qmi, vxlan-gpe and gre. tun is the only device
that is really user space facing, so maybe we just limit it to this?
Thanks,
Hannes
