However latest releases of Fusion seemed to have forgotten about the boot.sh which allowed you to restart your the vm's DHCP server after assigning static ip's to some mac addresses.
Apparently the new approach is:
/Applications/VMware Fusion.app/Contents/Library/services.sh --stop
/Applications/VMware Fusion.app/Contents/Library/services.sh --startand yes, just a shell script to restart your dhcpd or sending a signal would have been better, but the extensions need to be loaded in a certain order apparently.