diff -Nupr src.orig/net/core/dev.c src/net/core/dev.c
--- src.orig/net/core/dev.c 2020-03-10 10:35:55.176562607 -0400
+++ src/net/core/dev.c 2020-03-10 10:37:54.458302249 -0400
@@ -4327,6 +4327,7 @@ skip_classify:
case RX_HANDLER_PASS:
break;
default:
+ printk("BUG!\n");
BUG();
}
}