From 34858e934fd8bc60a7b5756c86e631eebdba9242 Mon Sep 17 00:00:00 2001
From: Sepalani <sepalani@hotmail.fr>
Date: Fri, 23 Sep 2022 20:54:26 +0400
Subject: [PATCH] BBA/BuiltIn: Ignore UPnP request to itself

---
 Source/Core/Core/HW/EXI/BBA/BuiltIn.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Source/Core/Core/HW/EXI/BBA/BuiltIn.cpp b/Source/Core/Core/HW/EXI/BBA/BuiltIn.cpp
index 6f84fe1010..4dfc0a30ee 100644
--- a/Source/Core/Core/HW/EXI/BBA/BuiltIn.cpp
+++ b/Source/Core/Core/HW/EXI/BBA/BuiltIn.cpp
@@ -520,6 +520,13 @@ void CEXIETHERNET::BuiltInBBAInterface::HandleUPnPClient()
     return;
   }
 
+  if (m_current_ip == ref->from.sin_addr.s_addr)
+  {
+    ref->tcp_socket.disconnect();
+    WARN_LOG_FMT(SP1, "Ignoring UPnP request to itself");
+    return;
+  }
+
   ref->delay = GetTickCountStd();
   ref->ip = ref->from.sin_addr.s_addr;
   ref->local = ref->to.sin_port;