Update interface.

diff --git a/interface b/interface
index a2b93ddc88a458add5ddb79007aaca40cdbba5f8..db96fa946f8c79cf3d25d44efce1426496a6ee79 160000 (submodule)
--- a/interface
+++ b/interface
@@ -1 +1 @@
-Subproject commit a2b93ddc88a458add5ddb79007aaca40cdbba5f8
+Subproject commit db96fa946f8c79cf3d25d44efce1426496a6ee79