Off the record - Craig Box

There are a couple of helpful blog posts (Nilesh Kapadia and Max Newell deserve a shout-out here) which help you with changing the DHCP settings given to your NAT or host networks on VMware Fusion. However, it all changes in 3.0.

The file you now need to edit is /Library/Application Support/VMware Fusion/networking. In there, you will find these lines:

answer VNET_8_HOSTONLY_SUBNET 192.168.93.0
answer VNET_8_VIRTUAL_ADAPTER_ADDR 192.168.93.1

I believe the third octet (the 93 part) is selected randomly when you install; in any case, I wanted to give out addresses on 192.168.227.0/24, so I changed the configuration like so:

answer VNET_8_HOSTONLY_SUBNET 192.168.227.0
answer VNET_8_VIRTUAL_ADAPTER_ADDR 192.168.227.1

and restarted the network interfaces:

sudo "/Library/Application Support/VMware Fusion/boot.sh" --restart

Now, make a note of the MAC address of your virtual network adapter in your guest OS, and you can assign an entry in the dhcpd.conf file (/Library/Application Support/VMware Fusion/vmnet8/dhcpd.conf).  Make sure you do it outside of the area that is marked "this will be overwritten"!

host developer-vm {
    hardware ethernet 00:0c:29:cb:dd:72;
    fixed-address 192.168.227.128;
}

and another service restart.