From ef67e946136b03abebd30c94dda3a24bd973c179 Mon Sep 17 00:00:00 2001
From: shichunma <masc2008@gmail.com>
Date: Mon, 23 Mar 2026 21:36:09 +0800
Subject: [PATCH] net/nat: fix missed nat_unlock

If call nat_enable twice, there will be a miss "nat_unlock".

Signed-off-by: Jerry Ma <shichunma@bestechnic.com>
---
 net/nat/nat.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/nat/nat.c b/net/nat/nat.c
index 426a04cd848..d8cf542b667 100644
--- a/net/nat/nat.c
+++ b/net/nat/nat.c
@@ -118,6 +118,7 @@ int nat_enable(FAR struct net_driver_s *dev)
   if (IFF_IS_NAT(dev->d_flags))
     {
       nwarn("WARNING: NAT was already enabled for %s!\n", dev->d_ifname);
+      nat_unlock();
       return -EEXIST;
     }