From: florian <florian@openbsd.org>
Date: Sat, 10 Apr 2021 17:22:34 +0000 (+0000)
Subject: Make sure the ip header lands on a 4 byte alignment by adding 2 bytes
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=c6841532fa4aded9af87517b1dc277071ed44250;p=openbsd

Make sure the ip header lands on a 4 byte alignment by adding 2 bytes
padding because the ethernet header in front is only 14 bytes.
Found the hard way by me while testing on sparc64.
Solution suggested by & OK deraadt
---

diff --git a/sbin/dhcpleased/dhcpleased.h b/sbin/dhcpleased/dhcpleased.h
index b33312799d4..d4aa71c525d 100644
--- a/sbin/dhcpleased/dhcpleased.h
+++ b/sbin/dhcpleased/dhcpleased.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dhcpleased.h,v 1.3 2021/02/27 10:21:08 florian Exp $	*/
+/*	$OpenBSD: dhcpleased.h,v 1.4 2021/04/10 17:22:34 florian Exp $	*/
 
 /*
  * Copyright (c) 2017, 2021 Florian Obser <florian@openbsd.org>
@@ -235,6 +235,7 @@ struct imsg_propose_rdns {
 struct imsg_dhcp {
 	uint32_t		if_index;
 	ssize_t			len;
+	uint8_t			ether_align[2];
 	uint8_t			packet[1500];
 };