Update INT drop reasons

Change-Id: I6cc0d826a8d25d0266025894b9f90b1eb9a325d6
diff --git a/dict.txt b/dict.txt
index cb9efc3..ea3e238 100644
--- a/dict.txt
+++ b/dict.txt
@@ -69,6 +69,7 @@
 configuration
 customizability
 dataplane
+dbuf
 decap
 dev
 disaggregated