From c024fac54cb088ddf8598c824cda6b44924a88ac Mon Sep 17 00:00:00 2001
From: Jiacheng Guo <gjc@google.com>
Date: Tue, 14 Apr 2020 23:58:15 +0800
Subject: [PATCH] [ip6] fix remove unsecure port behavior (#4822)

When removing unsecure port, we should not add aFromNcpHost filter since
the packet comes from the child.
---
 src/core/net/ip6.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/net/ip6.cpp b/src/core/net/ip6.cpp
index 4d2170845..ff50d823d 100644
--- a/src/core/net/ip6.cpp
+++ b/src/core/net/ip6.cpp
@@ -1232,7 +1232,7 @@ otError Ip6::HandleDatagram(Message &aMessage, Netif *aNetif, const void *aLinkM
         }
 
 #if OPENTHREAD_CONFIG_UNSECURE_TRAFFIC_MANAGED_BY_STACK_ENABLE
-        if (aFromNcpHost && (nextHeader == kProtoTcp || nextHeader == kProtoUdp))
+        if (nextHeader == kProtoTcp || nextHeader == kProtoUdp)
         {
             uint16_t dstPort;