From 12d35f3dfa76aeced2f39d790c58de32956feb35 Mon Sep 17 00:00:00 2001
From: Abtin Keshavarzian <abtink@google.com>
Date: Tue, 26 Jul 2022 20:52:53 -0700
Subject: [PATCH] [routing-manager] ensure to clear the prefix for default
 route (#7948)

This commit fixes the method setting the prefix table entry from
RA header as a default route by clearing `mPrefix` variable so
to set it as `::/0`.
---
 src/core/border_router/routing_manager.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/core/border_router/routing_manager.cpp b/src/core/border_router/routing_manager.cpp
index 6283e73d2..2973b269f 100644
--- a/src/core/border_router/routing_manager.cpp
+++ b/src/core/border_router/routing_manager.cpp
@@ -1906,6 +1906,7 @@ exit:
 
 void RoutingManager::DiscoveredPrefixTable::Entry::InitFrom(const Ip6::Nd::RouterAdvertMessage::Header &aRaHeader)
 {
+    mPrefix.Clear();
     mType                    = kTypeRoute;
     mValidLifetime           = aRaHeader.GetRouterLifetime();
     mShared.mRoutePreference = aRaHeader.GetDefaultRouterPreference();