nat: Document that the MDCX message is not implemented
diff --git a/openbsc/src/nat/bsc_mgcp_utils.c b/openbsc/src/nat/bsc_mgcp_utils.c
index b71ec94..e68b647 100644
--- a/openbsc/src/nat/bsc_mgcp_utils.c
+++ b/openbsc/src/nat/bsc_mgcp_utils.c
@@ -166,6 +166,8 @@
 		LOGP(DMGCP, LOGL_ERROR, "snprintf for DLCX failed.\n");
 		return;
 	}
+
+	#warning "The MDCX is not send to the BSC. It should"
 }
 
 static void bsc_mgcp_send_dlcx(struct bsc_connection *bsc, int endpoint)