From ad88c2c6c91b1a92f252cf48b54384cb6755dcd5 Mon Sep 17 00:00:00 2001
From: piso <piso@FreeBSD.org>
Date: Mon, 3 Mar 2008 22:32:01 +0000
Subject: When unloading kld, don't forget to flush the nat pointers.

---
 sys/netinet/ip_fw_nat.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'sys')

diff --git a/sys/netinet/ip_fw_nat.c b/sys/netinet/ip_fw_nat.c
index 488fd86..bac0d41 100644
--- a/sys/netinet/ip_fw_nat.c
+++ b/sys/netinet/ip_fw_nat.c
@@ -598,6 +598,7 @@ ipfw_nat_init(void)
 static void
 ipfw_nat_destroy(void)
 {
+	struct ip_fw *rule;
 	struct cfg_nat *ptr, *ptr_temp;
 	
 	IPFW_WLOCK(&layer3_chain);
@@ -608,6 +609,12 @@ ipfw_nat_destroy(void)
 		free(ptr, M_IPFW);
 	}
 	EVENTHANDLER_DEREGISTER(ifaddr_event, ifaddr_event_tag);
+	/* flush all nat ptrs */
+	for (rule = layer3_chain.rules; rule; rule = rule->next) {
+		ipfw_insn_nat *cmd = (ipfw_insn_nat *)ACTION_PTR(rule);
+		if (cmd->o.opcode == O_NAT)
+			cmd->nat = NULL;
+	}
 	/* deregister ipfw_nat */
 	ipfw_nat_ptr = NULL;
 	IPFW_WUNLOCK(&layer3_chain);
-- 
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