From e350d4e49fc74b1ec6aa01b6d52e520a1652a3c4 Mon Sep 17 00:00:00 2001
From: rongli <rongli@nestlabs.com>
Date: Fri, 14 Jul 2017 12:37:21 +0800
Subject: [PATCH] [mle] fix reattach attempts after reset (#1995)

---
 src/core/thread/mle.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/core/thread/mle.cpp b/src/core/thread/mle.cpp
index 1707fe3eb..99d1bcd37 100644
--- a/src/core/thread/mle.cpp
+++ b/src/core/thread/mle.cpp
@@ -481,7 +481,11 @@ otError Mle::BecomeDetached(void)
 
     VerifyOrExit(mRole != OT_DEVICE_ROLE_DISABLED, error = OT_ERROR_INVALID_STATE);
 
-    netif.GetPendingDataset().HandleDetach();
+    // not in reattach stage after reset
+    if (mReattachState == kReattachStop)
+    {
+        netif.GetPendingDataset().HandleDetach();
+    }
 
     SetStateDetached();
     SetRloc16(Mac::kShortAddrInvalid);