[openib-general] [PATCHv4] IPoIB CM Experimental support

[Roland Dreier]

 > - Using path MTU discovery, multicast and UDP traffic to UD mode now work,
 >   only a small number of packets is dropped.

How does this work?  What happens if I set my MTU to 8K and send a
8000-byte UDP message to a node that doesn't implement CM?  What
happens if I send an 8000-byte UDP multicast?

I didn't think UDP did path MTU discovery by default...

 - R.