[ofa-general] Re: [openib-general] Fw: [PATCH] enable IPoIB only if broadcast join finish

[Jason Gunthorpe]

On Thu, Mar 01, 2007 at 05:04:43PM -0800, Shirley Ma wrote:

> IPv6 ND doesn't prevent the duplicate IPv6 link-local address in the network.
> It only saves a warning in /var/log/messages to indicate that this address is
> duplicated in the network. ND can detect this when sending packets.

That isn't quite accurate, if IPv6 DAD detects a duplicate then the
address never leaves the tentative state and won't be usable.

There is also a similar problem here with the timing of IPv6 router
solicitation.

Maybe the solution here is that IPv6 core should be waiting for the
multicast groups it requests to register before doing DAD/RS?

Jason