protect ip_natexpire

diff --git a/sys/netinet/ip_nat.c b/sys/netinet/ip_nat.c
index 17416db..2a49950 100644 (file)
--- a/sys/netinet/ip_nat.c
+++ b/sys/netinet/ip_nat.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: ip_nat.c,v 1.8 1997/02/11 22:23:25 kstailey Exp $     */
+/*     $OpenBSD: ip_nat.c,v 1.9 1997/02/12 15:16:02 kstailey Exp $     */
 /*
  * (C)opyright 1995-1996 by Darren Reed.
  *
@@ -899,8 +899,10 @@ void
 ip_natexpire()
 {
        register struct nat *nat, **natp;
+       int s;
 
        MUTEX_ENTER(&ipf_nat);
+       SPLNET(s);
        for (natp = &nat_instances; (nat = *natp); natp = &nat->nat_next) {
                if (--nat->nat_age)
                        continue;
@@ -908,5 +910,6 @@ ip_natexpire()
                nat_delete(nat);
                nat_stats.ns_expire++;
        }
+       SPLX(s);
        MUTEX_EXIT(&ipf_nat);
 }