CONFIG_TEST_RANDOM_GENERATOR=y CONFIG_NETWORKING=y CONFIG_NETWORKING_WITH_LOGGING=y CONFIG_NETWORKING_UART=y CONFIG_IP_BUF_RX_SIZE=3 CONFIG_IP_BUF_TX_SIZE=4 CONFIG_NANO_TIMEOUTS=y CONFIG_ER_COAP=y CONFIG_ER_COAP_WITH_DTLS=y CONFIG_ER_COAP_DEBUG=y