Sun Microsystems VIRTUALBOX 3.0.0 - Manual (Page 126)

8 VBoxManage reference
• With --lowerip and --upperip, you can specify the lowest and highest IP
address, respectively, that the DHCP server will hand out to clients.
Finally, you must specify --enable or the the DHCP server will be created in the
disabled state, doing nothing.
After this, VirtualBox will automatically start the DHCP server for given internal
or host-only network as soon as the first virtual machine which uses that network is
started.
Reversely, use VBoxManage dhcpserver remove with the given --netname
<network_name> or --ifname <hostonly_if_name> to remove the DHCP
server again for the given internal or host-only network.
To modify the settings of a DHCP server created earlier with VBoxManage
dhcpserver add , you can use VBoxManage dhcpserver modify for a given
network or host-only interface name.
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