[PKG-Openstack-devel] Bug#858565: Bug#858565: neutron-l3-agent: IPv6 Stateless Address Auto Configuration (SLAAC) mode fails when radvd is not installed on the host

[Thomas Goirand]

On 03/24/2017 09:58 AM, Alberto Molina Coballes wrote:
> 2017-03-24 1:26 GMT+01:00 Thomas Goirand <zigo at debian.org
> <mailto:zigo at debian.org>>:
> 
> 
>     Hi,
> 
>     Unfortunately, not everyone wants to use IPv6. For those who don't,
>     imposing radvd as a hard dependency is a bad idea. IMO, it's best to let
>     every user choose what it wants to do to match its use case, and
>     manually install radvd.
> 
> 
> Hi Thomas,
> 
> There's no reference about the need to install radvd to configure
> neutron with IPv6 support in the documentation and IMO is confusing when
> a configuration option fails because a necessary package is not
> installed. radvd is a small package with no additional dependencies, so
> I don't think is bad idea to include it as a dependency.

The problem isn't the size of the package or its eventual dependencies.
The issues is that we want to allow to *not* install or run radvd if a
user doesn't want it. Indeed, it may destroy an already running ipv6
setup, or add a potentially not necessary complexity and security
surface of attack that one may now want.

>     We could add radvd as Suggests: though, but that is too late to ask for
>     a migration exception, so this change wont be in Stretch.
> 
> Yes, I agree with you, it's too late for Stretch but maybe it could be
> included in the next release.

Will do.

Thomas Goirand (zigo)