Definitely looking for ideas here. Could be the Network settings.
For some reasons, when I create vmk0 with Management Network and vmk1 with VM Network, they both grab onto vSwitch0 and don't wanna move. Poor lonely vSwitch1 with it's two physical ports is just sitting there empty with no port groups. This may be the underlying problem. There's probably something that could be done in the CLI to fix this, but it's been a long time and I don't remember what commands I would need to use for that.