From a74e0a35c4968a9e71db92d5959c21d7a5b4b790 Mon Sep 17 00:00:00 2001
From: Rongli Sun <rongli@google.com>
Date: Fri, 7 May 2021 22:51:27 +0800
Subject: [PATCH] [dua] avoid unnecessary log (#6591)

---
 src/core/thread/dua_manager.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/core/thread/dua_manager.cpp b/src/core/thread/dua_manager.cpp
index e67b83c3a..382481184 100644
--- a/src/core/thread/dua_manager.cpp
+++ b/src/core/thread/dua_manager.cpp
@@ -307,6 +307,8 @@ void DuaManager::HandleNotifierEvents(Events aEvents)
 {
     Mle::MleRouter &mle = Get<Mle::MleRouter>();
 
+    VerifyOrExit(mle.IsAttached(), mDelay.mValue = 0);
+
     if (aEvents.Contains(kEventThreadRoleChanged))
     {
         if (mle.HasRestored())
@@ -333,6 +335,9 @@ void DuaManager::HandleNotifierEvents(Events aEvents)
         UpdateRegistrationDelay(kNewDuaRegistrationDelay);
     }
 #endif
+
+exit:
+    return;
 }
 
 void DuaManager::HandleBackboneRouterPrimaryUpdate(BackboneRouter::Leader::State               aState,