From 1d4d43c0e7255ff40547a5aee55900d3e58b9d6d Mon Sep 17 00:00:00 2001
From: "Andrey V. Elsukov" <ae@FreeBSD.org>
Date: Fri, 20 May 2016 12:17:40 +0000
Subject: [PATCH] Remove ip6 adjusting from the place where pointer couldn't be
 changed. And add comment after calling PFIL hooks, where it could be changed.

---
 sys/netinet6/ip6_output.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/sys/netinet6/ip6_output.c b/sys/netinet6/ip6_output.c
index f3c48541f00..9017de7830a 100644
--- a/sys/netinet6/ip6_output.c
+++ b/sys/netinet6/ip6_output.c
@@ -536,10 +536,6 @@ again:
 		else
 			ip6->ip6_hlim = V_ip6_defmcasthlim;
 	}
-
-	/* adjust pointer */
-	ip6 = mtod(m, struct ip6_hdr *);
-
 	/*
 	 * Validate route against routing table additions;
 	 * a better/more specific route might have been added.
@@ -798,6 +794,7 @@ again:
 	error = pfil_run_hooks(&V_inet6_pfil_hook, &m, ifp, PFIL_OUT, inp);
 	if (error != 0 || m == NULL)
 		goto done;
+	/* adjust pointer */
 	ip6 = mtod(m, struct ip6_hdr *);
 
 	needfiblookup = 0;