Re: possible bug in IPv6 MLD retransmissions

[Flavio Leitner <fbl@redhat.com>]

On Wed, May 22, 2013 at 07:30:39AM -0400, David Stevens wrote:
> First, I wouldn't call this a "bug"; it is listed as a "SHOULD", not a 
> "MUST",  so
> it is not required for compliance, though it is a good feature to add.
> 
> Second, I think doing this on all LL addresses unconditionally isn't a 
> good
> idea. If some configuration is using thousands of LL addrs for reasons of 
> their
> own, they would suddenly be blasted with unexpected MLD reports where
> they have none now. I don't see why tracking it would be such a problem --
> if nothing else, you could simply add a counter for the number of valid LL 
> addrs
> incremented on DAD completion, and send these whenever it transitions from 
> 0 to 1.

It becomes a bug (and that's why I started with 'possible') if dad
completes after the two MLD reports sent with ``::'' source, because
routers will ignore those initial reports and the system is left out.

Thanks,
-- 
fbl