You can add static routes to indicate where the system should send packets intended for certain IP addresses. The same procedures can be used to manage either IPv4 or IPv6 routes.
DNS/DHCP Server does not permit static routes that duplicate the network address and netmask of IP addresses configured on physical interfaces. However, you can configure static routes that overlap existing IP addresses on physical interfaces. That is, network addresses that are larger or smaller than the IP addresses on eth0, or eth2.
To configure network routes: