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

[Roland Dreier]

 > Don't get me wrong, I think your patch is ultimately the right way to
 > go, but it needs another part to address the problem IPv6 has - or at
 > least a plan on how to address it. I don't think ignoring
 > the synchronizing problem is the way to go.

OK, I think I've convinced myself that the gain from this patch is
worth the small risk of addr autoconf breakage.  So I'll apply it for
now.

 > Also, in my view, the problem you are seeing with MLID exhaustion is
 > purely a SM problem and has nothing to do with IPoIB and switch
 > limits. SMs need to treat MLIDs as a precious resource and share them
 > agressively. Especially IPv6 solicited node multicast addresses.

Agree -- this patch is definitely a workaround for broken fabrics --
but most (all?) current SMs don't deal with MLID allocation correctly.

 - R.