From d03c98a08a53d9ed9601a0c626368f88b51857ea Mon Sep 17 00:00:00 2001
From: Juraj Andrassy <juraj.andrassy@gmail.com>
Date: Sat, 27 Jul 2024 18:39:33 +0200
Subject: [PATCH] LwIpIntfDev.end() - check _started to prevent crash

---
 cores/esp8266/LwipIntfDev.h | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/cores/esp8266/LwipIntfDev.h b/cores/esp8266/LwipIntfDev.h
index 962d5e1196..d69e2d73d8 100644
--- a/cores/esp8266/LwipIntfDev.h
+++ b/cores/esp8266/LwipIntfDev.h
@@ -349,9 +349,12 @@ boolean LwipIntfDev<RawDev>::begin(const uint8_t* macAddress, const uint16_t mtu
 template<class RawDev>
 void LwipIntfDev<RawDev>::end()
 {
-    netif_remove(&_netif);
-    _started = false;
-    RawDev::end();
+    if (_started)
+    {
+        netif_remove(&_netif);
+        _started = false;
+        RawDev::end();
+    }
 }
 
 template<class RawDev>