You can use the virtual network editor to change the subnet IP address for a host-only or NAT network on a Linux host system.
You can also use the virtual network editor to specify that a local DHCP service distributes IP addresses to virtual machines. To change DHCP settings further, you must edit the DHCP server configuration file (dhcp.conf). See Editing the DHCP Server Configuration File.
Prerequisites
Verify that you have root access on the host system.
Familiarize yourself with the DHCP conventions for assigning IP addresses. See DHCP Conventions for Assigning IP Addresses in Host-Only and NAT Networks.