esp-idf/components/esp_netif/Kconfig

menu "ESP NETIF Adapter"

    config ESP_NETIF_IP_LOST_TIMER_INTERVAL
        int "IP Address lost timer interval (seconds)"
        range 0 65535
        default 120
        help
            The value of 0 indicates the IP lost timer is disabled, otherwise the timer is enabled.

            The IP address may be lost because of some reasons, e.g. when the station disconnects
            from soft-AP, or when DHCP IP renew fails etc. If the IP lost timer is enabled, it will
            be started everytime the IP is lost. Event SYSTEM_EVENT_STA_LOST_IP will be raised if
            the timer expires. The IP lost timer is stopped if the station get the IP again before
            the timer expires.

    choice ESP_NETIF_USE_TCPIP_STACK_LIB
        prompt "TCP/IP Stack Library"
        default ESP_NETIF_TCPIP_LWIP
        help
            Choose the TCP/IP Stack to work, for example, LwIP, uIP, etc.
        config ESP_NETIF_TCPIP_LWIP
            bool "LwIP"
            help
                lwIP is a small independent implementation of the TCP/IP protocol suite.

        config ESP_NETIF_LOOPBACK
            bool "Loopback"
            help
                Dummy implementation of esp-netif functionality which connects driver transmit
                to receive function. This option is for testing purpose only
    endchoice

    config ESP_NETIF_TCPIP_ADAPTER_COMPATIBLE_LAYER
        bool "Enable backward compatible tcpip_adapter interface"
        default y
        help
            Backward compatible interface to tcpip_adapter is enabled by default to support
            legacy TCP/IP stack initialisation code. Disable this option to use only esp-netif
            interface.
endmenu