Update interface.

diff --git a/interface b/interface
index c2d48265ca8246b9bad1af6045f9ebfabbb00d20..2fc1ff0263c9f11ef9dbff77e384736034c197f1 160000 (submodule)
--- a/interface
+++ b/interface
@@ -1 +1 @@
-Subproject commit c2d48265ca8246b9bad1af6045f9ebfabbb00d20
+Subproject commit 2fc1ff0263c9f11ef9dbff77e384736034c197f1