{
  # DHCPv4 use ISC DHCP default lifetimes
  "Dhcp4": {
    /// Use ISC DHCP default lifetime
    "valid-lifetime": 43200,
    /// Use ISC DHCP min lifetime
    "min-valid-lifetime": 300,
    /// Use ISC DHCP max lifetime
    "max-valid-lifetime": 86400
  }
}