Hi Dan,
I don't think this is behind your problem, but I was meddling with one of the haas master networking earlier today. I was only working with the interface on the IPMI network which shouldn't be interfering with your stuff, but...
I did just put the network back the way it was before I started messing with it - can you test again and see if any of your problems are gone, or have changed?
Best,
Laura