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

[Roland Dreier]

 > Setting carrier on should be OK here. ND can't send out before the
 > interface is capable for sending any packet. And if ND messages can't reach
 > the correct destination because of multicast join failure later then the
 > IPv6 address is useless.

Your patch turns on the carrier before all multicast joins have
completed.  But if ND messages are sent too early, and a duplicate
address is chosen, and then multicast joins complete later, a fabric
might end up with duplicate IPv6 link-local addresses, right?  Or is
there some reason that can't happen?

 - R.