diff -Nupr src.orig/net/core/dev.c src/net/core/dev.c
--- src.orig/net/core/dev.c	2022-04-29 16:08:21.614781280 -0400
+++ src/net/core/dev.c	2022-04-29 16:08:29.184808219 -0400
@@ -5278,6 +5278,7 @@ skip_classify:
 		case RX_HANDLER_PASS:
 			break;
 		default:
+			printk("BUG!\n");
 			BUG();
 		}
 	}