[ovs-dev] [mcgroup 4/4] dpif-linux: Handle nl_lookup_genl_mcgroup() failures.

[Ethan Jackson]

> In the future, it is possible that we will want a fallback for other
> multicast groups as well.  Would it make sense to make the fallback
> group an argument to nl_lookup_genl_mcgroup(), with zero to disable
> fallback?  (Of course nl_lookup_genl_mcgroup() would still log a
> message that the fallback was in use.)  Then it will simplify later
> work, if there is any.

I was borderline on doing it this way.  Since you think it's a good
idea I'll go ahead and convert it.

Ethan