diff --git a/configs/defconfig.esp32c6 b/configs/defconfig.esp32c6
index 1ba394bb1..1564fc6ec 100644
--- a/configs/defconfig.esp32c6
+++ b/configs/defconfig.esp32c6
@@ -28,16 +28,18 @@ CONFIG_OPENTHREAD_ENABLED=y
 # Border Router disabled
 # CONFIG_OPENTHREAD_BORDER_ROUTER=y
 # CONFIG_OPENTHREAD_RADIO_SPINEL_UART=y
-CONFIG_OPENTHREAD_DNS64_CLIENT=y
+# CONFIG_OPENTHREAD_DNS64_CLIENT=y
 # Radio for RPC
 # CONFIG_OPENTHREAD_RADIO=y 
 # CONFIG_OPENTHREAD_RADIO_NATIVE=y
-CONFIG_OPENTHREAD_DIAG=n
-CONFIG_OPENTHREAD_COMMISSIONER=y
-CONFIG_OPENTHREAD_JOINER=y
-CONFIG_OPENTHREAD_CLI=y
-CONFIG_OPENTHREAD_SRP_CLIENT=y
-CONFIG_OPENTHREAD_DNS_CLIENT=y
+# Optional - it reduces the size of final library binary
+# CONFIG_OPENTHREAD_DIAG=n
+# CONFIG_OPENTHREAD_SRP_CLIENT=y
+# CONFIG_OPENTHREAD_DNS_CLIENT=y
+# CONFIG_OPENTHREAD_COMMISSIONER=y
+# CONFIG_OPENTHREAD_JOINER=y
+# last change... removing CLI. :-(
+# CONFIG_OPENTHREAD_CLI=y
 # Default dataset for quick start
 CONFIG_OPENTHREAD_NETWORK_NAME="OpenThread-ESP"
 CONFIG_OPENTHREAD_MESH_LOCAL_PREFIX="fd00:db8:a0:0::/64"