#/etc/dhcpd.conf option domain-name-servers 200.232.140.1; subnet 200.232.140.0 netmask 255.255.255.0 { option routers 200.232.140.1; range 200.232.140.20 200.232.140.200; }
subnet 172.16.255.0 netmask 255.255.255.0 { option routers 172.16.255.1; range 172.16.255.20 172.16.255.200; }