Received Unexpected Ping (NV NT V6).

["Boyles, Gary P" <gary.p.boyles@intel.com>]

I was having trouble discovering a few nodes... so I turned netmon-tracing
on.

When I did... I saw quite a few mesages that read...

"Received Unexpected Ping... From Node xxx"

What exactly does this message mean?  Its like it sends out a ping, and
then forgets that it sent it out. 

Any ideas?

Thanks.