From 0206377e0af382130d4f5e9a80e9ab4574e6d619 Mon Sep 17 00:00:00 2001
From: Nanosonde <2073569+nanosonde@users.noreply.github.com>
Date: Tue, 9 Jun 2020 12:36:03 +0200
Subject: [PATCH] Make sure that sent broadcast/systembroadcast frames are
 always marked as broadcast frames on closed media

---
 src/knx/data_link_layer.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/knx/data_link_layer.cpp b/src/knx/data_link_layer.cpp
index a8421e8..877783d 100644
--- a/src/knx/data_link_layer.cpp
+++ b/src/knx/data_link_layer.cpp
@@ -140,7 +140,12 @@ bool DataLinkLayer::sendTelegram(NPDU & npdu, AckType ack, uint16_t destinationA
     frame.addressType(addrType);
     frame.priority(priority);
     frame.repetition(RepititionAllowed);
+#if (MEDIUM_TYPE == 5)||(MEDIUM_TYPE == 0)
+    // Make sure to always send as normal Broadcast on closed media (TP and IP)
+    frame.systemBroadcast(Broadcast);
+#else
     frame.systemBroadcast(systemBroadcast);
+#endif
 
     if (npdu.octetCount() <= 15)
         frame.frameType(StandardFrame);