Set default gateway

DHCP also allows for client's gateway configuration.To set any client on the local network to use default gateway 10.1.1.1, add line "option routers 10.1.1.1" into dhcpd.conf file as demonstrated below:

default-lease-time 600;
max-lease-time 7200;

subnet 10.1.1.0 netmask 255.255.255.0 {
  range 10.1.1.3 10.1.1.254;
  option domain-name-servers 10.1.1.1, 8.8.8.8;
  option routers 10.1.1.1;
}

subnet 192.168.0.0 netmask 255.255.0.0 {
}

subnet 10.1.1.0 netmask 255.255.255.0 {
  range 10.1.1.3 10.1.1.254;
  option routers 10.1.1.1;
}

DHCP will now set DHCP client with gateway 10.1.1.1.