[openib-general] Multicast join group failure prevents IPoIB performing

[Shirley Ma]

When bringing IPoIB interface up, I hit default group multicast join
failure. (This could be fixed in SM set up?)
ib0: multicast join failed for xxxx, status -22
Then the interface was UP but not RUNNING. So the nodes couldn't ping each
other. I think the right behavior of the interface should be UP and RUNNING
even with some multicast join failure. I would like to provide a patch if
there is no problem. Please advise.

Thanks
Shirley Ma
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