[Dnsmasq-discuss] IPv6: selective RAs

[Lutz Preßler]

Hello Simon!

Am Mittwoch, 12. September 2012 schrieb Simon Kelley:
> On 12/09/12 13:04, Lutz Preßler wrote:
> > I don't see a way to have RAs only for certain clients like
> > radvd (from radvd.conf.5:)
> > "By  default  radvd will send route advertisements so that every node on the
> > link can use them.  The list of clients (IPv6 address) to advertise to,
> > and accept route solicitations from can be configured.  If done, radvd
[...]
> > "
> > 
> > Is this a feature you would implement?
> 
> I don't think this is an appropriate feature for dnsmasq, the philosophy
> is that it should provide a basic RA service for networks which are
> really using DHCPv6 for the complex stuff.
I understand that. But maybe I have to explain the motiavation: clients,
which are in principle IPv6 capable but habe broken or incomplete implementations
(e.g. Windows XP, some Linux distros, Android). It would be good to be able
to black- or whitelist within dnsmasq (and not with packet filter rules).
I said RA - but this also extends to DHCPv6 as there are clients which
(not conforming to current RFCs) do DHCPv6 despite having received no RA.

> 
> > Only sending stateful DHCPv6 but no RAs is not possible either, is it?
> 
> If you configure DHCPv6 for a subnet, you get stateful DHCPv6 but no RA.
> That should combine with radvd fine, I think.
Sorry, this was a type: I meant "only stateLESS DHCPv6".

Lutz