Just posting this in case someone does a search via google…

To assign a fixed MAC-Adress to a VM, you'll have to edit the matching .vmx and do the following things:

1. uncomment everything involving "ethernet0.generated";

2. insert these two lines:

ethernet0.address = 00:50:56:0D:xx:xx
ethernet0.addressType = static

(you can chose whatever hex you want for xx:xx)