CONFIG_TEST_RANDOM_GENERATOR=y CONFIG_NETWORKING=y CONFIG_NETWORKING_WITH_LOGGING=y CONFIG_NETWORKING_UART=y CONFIG_NET_BUF_RX_SIZE=3 CONFIG_NET_BUF_TX_SIZE=5 CONFIG_NANO_TIMEOUTS=y CONFIG_NANO_TIMERS=y CONFIG_ER_COAP=y CONFIG_ER_COAP_CLIENT=y CONFIG_ER_COAP_DEBUG=y