CONFIG_NET_TEST=y CONFIG_NETWORKING=y CONFIG_NET_IPV6=y CONFIG_NET_UDP=y CONFIG_NET_TCP=n CONFIG_NET_IPV4=n CONFIG_NET_BUF_LOG=y CONFIG_SYS_LOG_NET_BUF_LEVEL=2 CONFIG_ENTROPY_GENERATOR=y CONFIG_TEST_RANDOM_GENERATOR=y CONFIG_COAP=y CONFIG_COAP_TEST_API_ENABLE=y CONFIG_MAIN_STACK_SIZE=2048