On Thu, Jun 27, 2013 at 06:33:42PM -0700, Stephen Hemminger wrote:
> On Fri, 28 Jun 2013 03:23:07 +0200
> Hannes Frederic Sowa <han...@stressinduktion.org> wrote:
> > Hm, are you sure? NETCONFA_MC_FORWARDING is of type RTM_NEWNETCONF
> > and expects ncm_family to be either AF_INET or AF_INET6 (at least in
> > iproute2/ipmonitor.c).
> > 
> 
> I agree with Sven on this, looks like the recent addition of netconf
> configuration to netlink didn't embrace how multicast is handled in kernel.
> 
> Multicast forwarding is a routing related configuration value.
> All the multicast routing events come in as special family RTNL_FAMILY_IPMR
> (see net/ipv4/ipmr.c function ipmr_fill_route). I would expect that multicast
> routing daemons would like to be able to use special family to listen for
> all multicast related changes (and not see non-multicast events).
> 
> 
> Minor nit: the patch is formatted incorrectly (case should line up with 
> switch).

Yes, this seems reasonable but would need a small update to ipnetconf.c, too.

Thanks,

  Hannes

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