From ed0334f626db27752800a5d324936b4870e38cb8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20Wa=C5=84czyk?= <Pawel.Wanczyk@nordicsemi.no>
Date: Thu, 21 Jul 2022 00:09:28 +0200
Subject: [PATCH] [routing-table] do not reset LastHeard timestamp when
 removing router link (#7879)

---
 src/core/thread/router_table.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/core/thread/router_table.cpp b/src/core/thread/router_table.cpp
index db903279e..722faddb9 100644
--- a/src/core/thread/router_table.cpp
+++ b/src/core/thread/router_table.cpp
@@ -323,8 +323,11 @@ exit:
 
 void RouterTable::RemoveRouterLink(Router &aRouter)
 {
-    aRouter.SetLinkQualityOut(kLinkQuality0);
-    aRouter.SetLastHeard(TimerMilli::GetNow());
+    if (aRouter.GetLinkQualityOut() != 0)
+    {
+        aRouter.SetLinkQualityOut(kLinkQuality0);
+        aRouter.SetLastHeard(TimerMilli::GetNow());
+    }
 
     for (Router *cur = GetFirstEntry(); cur != nullptr; cur = GetNextEntry(cur))
     {