Thanks jbamberg. I'm only taking one ethernet cable from the H9k into the Mac Pro, and the mac pro gets its internet connection wirelessly. (It all shows up on H9k) I tried (before the update process that worked) enabling the sharing but it made no difference. Do I need to use 2 ethernet cables for this to work (avoiding wireless on the mac)?
Oh, I see. I would have expected that to work, if internet sharing is enabled. We'll see if we can reproduce the issue here.