From 92a74c588662ad42df3d1efa26b1ce0a62d87381 Mon Sep 17 00:00:00 2001
From: tedu <tedu@openbsd.org>
Date: Thu, 15 Oct 2015 21:56:52 +0000
Subject: [PATCH] doh, not all requests are the same size. check len first.

---
 usr.sbin/rebound/rebound.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/usr.sbin/rebound/rebound.c b/usr.sbin/rebound/rebound.c
index f5ba84717a5..724fc60303d 100644
--- a/usr.sbin/rebound/rebound.c
+++ b/usr.sbin/rebound/rebound.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: rebound.c,v 1.9 2015/10/15 21:39:15 tedu Exp $ */
+/* $OpenBSD: rebound.c,v 1.10 2015/10/15 21:56:52 tedu Exp $ */
 /*
  * Copyright (c) 2015 Ted Unangst <tedu@openbsd.org>
  *
@@ -123,7 +123,8 @@ cachelookup(struct dnspacket *dnsreq, size_t reqlen)
 	origid = dnsreq->id;
 	dnsreq->id = 0;
 	TAILQ_FOREACH(hit, &cache, cache) {
-		if (memcmp(hit->req, dnsreq, reqlen) == 0)
+		if (hit->reqlen == reqlen &&
+		    memcmp(hit->req, dnsreq, reqlen) == 0)
 			break;
 	}
 	dnsreq->id = origid;
-- 
2.20.1