Hi,
my configuration is Esxi 5.0 U2, configured to be a Domain Member.
The Management server has just 1 NIC on the same subnet as the Esxi.
Your problem can be pheraps due to the fact the there isn's a Domain Controller,
so the Esxi Hostname can't be solved (resulting in 0.0.0.0).
You can fix this by adding manually the entry in the etc\hosts of windows
in order the Esxi Hostname can be solved in IP locally (and so recognized by MSM).