From 06b6d5eabc2f954b8fe46345d35054561de3a498 Mon Sep 17 00:00:00 2001
From: brian <brian@openbsd.org>
Date: Sat, 4 Mar 2000 02:21:58 +0000
Subject: [PATCH] Refresh the NAT IP pointer after a potential mbuf
 reallocation.  This caused frequent lock-ups for individual sessions over a
 NAT'd ppp link when MTU sizes ended up more or less exactly wrong.

---
 usr.sbin/ppp/ppp/nat_cmd.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/usr.sbin/ppp/ppp/nat_cmd.c b/usr.sbin/ppp/ppp/nat_cmd.c
index 44e66c39951..edb62ecc7b4 100644
--- a/usr.sbin/ppp/ppp/nat_cmd.c
+++ b/usr.sbin/ppp/ppp/nat_cmd.c
@@ -2,7 +2,7 @@
  * The code in this file was written by Eivind Eklund <perhaps@yes.no>,
  * who places it in the public domain without restriction.
  *
- *	$OpenBSD: nat_cmd.c,v 1.4 2000/03/03 21:52:57 brian Exp $
+ *	$OpenBSD: nat_cmd.c,v 1.5 2000/03/04 02:21:58 brian Exp $
  */
 
 #include <sys/param.h>
@@ -380,6 +380,7 @@ nat_LayerPull(struct bundle *bundle, struct link *l, struct mbuf *bp,
   /* Ensure there's a bit of extra buffer for the NAT code... */
   bp = m_pullup(m_append(bp, NULL, NAT_EXTRABUF));
   ret = PacketAliasIn(MBUF_CTOP(bp), bp->m_len);
+  pip = (struct ip *)MBUF_CTOP(bp);
 
   bp->m_len = ntohs(pip->ip_len);
   if (bp->m_len > MAX_MRU) {
-- 
2.20.1