This happened to two of my XenServer hosts in a CS 3.0.1 cluster. http://pastebin.com/UpCHAuQi
>From what I can tell a MAC address got assigned? or something to the interface >"storageNetwork1" and all hell broke loose. Somehow it managed to take down >all of the management interfaces on the host. Is this something within >cloudstack? Or should I be inspecting XenServer. Is there anything inside of >cloudstack that would attempt to assign a MAC address to a management >interface? I understand there probably isn't, but I just want to eliminate all possibilities.