From 513903061a150a19720658f7f627ad92d76acbbc Mon Sep 17 00:00:00 2001
From: Robin Vos <Rubeer@users.noreply.github.com>
Date: Tue, 28 Nov 2017 18:35:24 +0100
Subject: [PATCH] [coap] set the interfaceId on retransmission (#2370)

---
 src/core/coap/coap.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/core/coap/coap.cpp b/src/core/coap/coap.cpp
index e402c74ba..1bedbaccf 100644
--- a/src/core/coap/coap.cpp
+++ b/src/core/coap/coap.cpp
@@ -331,6 +331,7 @@ void CoapBase::HandleRetransmissionTimer(void)
                 messageInfo.SetPeerAddr(coapMetadata.mDestinationAddress);
                 messageInfo.SetPeerPort(coapMetadata.mDestinationPort);
                 messageInfo.SetSockAddr(coapMetadata.mSourceAddress);
+                messageInfo.SetInterfaceId(GetNetif().GetInterfaceId());
 
                 SendCopy(*message, messageInfo);
             }