From 4212d42b89aa413e227cf7d0434c752543874196 Mon Sep 17 00:00:00 2001
From: maxv <maxv@NetBSD.org>
Date: Fri, 12 Oct 2018 05:41:18 +0000
Subject: [PATCH] Force ip_off to zero when the reassembly is complete. This
 was lost in my rev1.19 - before that the IP struct was clobbered for the
 reassembly, but it actually implicitly guaranteed that the first fragment of
 the packet would end up with ip_off = 0, and this was a desired behavior.

---
 sys/netinet/ip_reass.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sys/netinet/ip_reass.c b/sys/netinet/ip_reass.c
index 0d51d8aa2b72..c671e24cf6cc 100644
--- a/sys/netinet/ip_reass.c
+++ b/sys/netinet/ip_reass.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: ip_reass.c,v 1.20 2018/09/17 08:11:27 maxv Exp $	*/
+/*	$NetBSD: ip_reass.c,v 1.21 2018/10/12 05:41:18 maxv Exp $	*/
 
 /*
  * Copyright (c) 1982, 1986, 1988, 1993
@@ -46,7 +46,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ip_reass.c,v 1.20 2018/09/17 08:11:27 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ip_reass.c,v 1.21 2018/10/12 05:41:18 maxv Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -402,6 +402,7 @@ insert:
 	 * header visible.
 	 */
 	ip->ip_len = htons((ip->ip_hl << 2) + next);
+	ip->ip_off = htons(0);
 	ip->ip_src = fp->ipq_src;
 	ip->ip_dst = fp->ipq_dst;
 	free(fp, M_FTABLE);