diff --git a/mio/bin/t03.c b/mio/bin/t03.c
index 76a4ff0..01f856f 100644
--- a/mio/bin/t03.c
+++ b/mio/bin/t03.c
@@ -1,29 +1,3 @@
-/*
- * $Id$
- *
-    Copyright (c) 2016-2020 Chung, Hyung-Hwan. All rights reserved.
-
-    Redistribution and use in source and binary forms, with or without
-    modification, are permitted provided that the following conditions
-    are met:
-    1. Redistributions of source code must retain the above copyright
-       notice, this list of conditions and the following disclaimer.
-    2. Redistributions in binary form must reproduce the above copyright
-       notice, this list of conditions and the following disclaimer in the
-       documentation and/or other materials provided with the distribution.
-
-    THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
-    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAfRRANTIES
-    OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-    IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-    THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
 
 #include <mio.h>
 #include <mio-json.h>
diff --git a/mio/lib/dns-cli.c b/mio/lib/dns-cli.c
index e996b7b..f053af5 100644
--- a/mio/lib/dns-cli.c
+++ b/mio/lib/dns-cli.c
@@ -879,6 +879,13 @@ static void on_dnc_resolve (mio_svc_dnc_t* dnc, mio_dns_msg_t* reqmsg, mio_errnu
 			goto no_data;
 		}
 
+/*
+if (pi->hdr.code == MIO_DNS_RCODE_BADCOOKIE)
+{
+// retry with server cookie received....
+}
+*/
+
 		if (pi->hdr.rcode != MIO_DNS_RCODE_NOERROR) 
 		{
 			status = MIO_EINVAL;
diff --git a/mio/lib/mio-mar.h b/mio/lib/mio-mar.h
index f78b1a8..c9ab9c2 100644
--- a/mio/lib/mio-mar.h
+++ b/mio/lib/mio-mar.h
@@ -261,7 +261,7 @@ MIO_EXPORT void mio_svc_marc_stop (
 #if defined(MIO_HAVE_INLINE)
 static MIO_INLINE mio_t* mio_svc_marc_getmio(mio_svc_marc_t* svc) { return mio_svc_getmio((mio_svc_t*)svc); }
 #else
-#       define mio_svc_marc_getmio(svc) mio_svc_getmio(svc)
+#	define mio_svc_marc_getmio(svc) mio_svc_getmio(svc)
 #endif
 
 MIO_EXPORT int mio_svc_marc_querywithbchars (