From ef10b7085d61c6743e97d6bba153e4956d59ed30 Mon Sep 17 00:00:00 2001
From: maidnl <d.aimo@arduino.cc>
Date: Thu, 20 Jun 2024 12:02:04 +0200
Subject: [PATCH] fix for dhcp not asking for address when host if goes down
 and up again

---
 connectivity/lwipstack/source/LWIPInterface.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/connectivity/lwipstack/source/LWIPInterface.cpp b/connectivity/lwipstack/source/LWIPInterface.cpp
index a1cfcf31c41..c5c851406fe 100644
--- a/connectivity/lwipstack/source/LWIPInterface.cpp
+++ b/connectivity/lwipstack/source/LWIPInterface.cpp
@@ -199,6 +199,11 @@ void LWIP::Interface::netif_link_irq(struct netif *netif)
             netif_set_down(&interface->netif);
         }
     } else {
+        if(interface->dhcp_started) {
+            interface->dhcp_started = false;
+            interface->dhcp_has_to_be_set = true;
+            dhcp_stop(netif);
+        }
         osSemaphoreRelease(interface->unlinked);
         if (netif_is_up(&interface->netif)) {
             interface->connected = NSAPI_STATUS_CONNECTING;