raspap-webgui/config/defaults.json

{
  "dhcp": {
    "wlan0": { 
      "static ip_address": [ "10.3.141.1/24" ],
      "static routers": [ "10.3.141.1" ],
      "static domain_name_server": [ "1.1.1.1 8.8.8.8" ]
    },
    "uap0": {
      "static ip_address": [ "192.168.50.1/24" ],
      "static routers": [ "192.168.50.1" ],
      "static domain_name_server": [ "1.1.1.1 8.8.8.8" ]
    }
  },
  "dnsmasq": {
    "wlan0": {
      "dhcp-range": [ "10.3.141.50,10.3.141.255,255.255.255.0,12h" ]
    },
    "uap0": {
      "dhcp-range": [ "192.168.50.50,192.168.50.150,12h" ]
    }
  }
}