From 0bc886a46871b0b07902441994684e74cdcfa918 Mon Sep 17 00:00:00 2001
From: Simon Lin <simonlin@google.com>
Date: Fri, 18 Mar 2022 12:35:03 +0800
Subject: [PATCH] [routing-manager] fix BR can't send RA in the first 3 seconds
 (#7489)

---
 src/core/border_router/routing_manager.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/border_router/routing_manager.cpp b/src/core/border_router/routing_manager.cpp
index 0276b8897..4cd074bcf 100644
--- a/src/core/border_router/routing_manager.cpp
+++ b/src/core/border_router/routing_manager.cpp
@@ -72,7 +72,7 @@ RoutingManager::RoutingManager(Instance &aInstance)
     , mDiscoveredPrefixInvalidTimer(aInstance, HandleDiscoveredPrefixInvalidTimer)
     , mDiscoveredPrefixStaleTimer(aInstance, HandleDiscoveredPrefixStaleTimer)
     , mRouterAdvertisementCount(0)
-    , mLastRouterAdvertisementSendTime(TimerMilli::GetNow())
+    , mLastRouterAdvertisementSendTime(TimerMilli::GetNow() - kMinDelayBetweenRtrAdvs)
 #if OPENTHREAD_CONFIG_BORDER_ROUTING_VICARIOUS_RS_ENABLE
     , mVicariousRouterSolicitTimer(aInstance, HandleVicariousRouterSolicitTimer)
 #endif