CONFIG_BT=y CONFIG_LOG=y CONFIG_BT_SMP=y CONFIG_BT_PERIPHERAL=y CONFIG_BT_CENTRAL=y CONFIG_BT_L2CAP_DYNAMIC_CHANNEL=y CONFIG_BT_DEVICE_NAME="Zephyr Echo Client" CONFIG_NET_L2_BT=y CONFIG_NET_IPV4=n CONFIG_NET_IPV6=y CONFIG_NET_CONFIG_BT_NODE=y CONFIG_NET_CONFIG_NEED_IPV6=y CONFIG_NET_CONFIG_NEED_IPV4=n CONFIG_NET_CONFIG_MY_IPV4_ADDR="" CONFIG_NET_CONFIG_PEER_IPV4_ADDR="" CONFIG_NET_BUF_RX_COUNT=64