diff --git a/openbsc/src/nat/bsc_nat.c b/openbsc/src/nat/bsc_nat.c
index e3e5c34..35c4817 100644
--- a/openbsc/src/nat/bsc_nat.c
+++ b/openbsc/src/nat/bsc_nat.c
@@ -134,6 +134,7 @@
 	}
 
 	/* todo... do something with the connection */
+	/* todo... use GNUtls to see if we want to trust this as a BTS */
 
 	return 0;
 }