From 3a2969d92260b0e76b7e72c1f5055d5da6dcb2e5 Mon Sep 17 00:00:00 2001 From: Jonathan Hui Date: Tue, 13 Jun 2023 12:28:44 -0700 Subject: [PATCH] [routing-manager] require valid on-link prefix to be /64 (#9167) --- src/core/border_router/routing_manager.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/core/border_router/routing_manager.cpp b/src/core/border_router/routing_manager.cpp index 528c9aade..576a87ee4 100644 --- a/src/core/border_router/routing_manager.cpp +++ b/src/core/border_router/routing_manager.cpp @@ -845,7 +845,9 @@ bool RoutingManager::IsValidOnLinkPrefix(const Ip6::Nd::PrefixInfoOption &aPio) bool RoutingManager::IsValidOnLinkPrefix(const Ip6::Prefix &aOnLinkPrefix) { - return aOnLinkPrefix.IsValid() && (aOnLinkPrefix.GetLength() > 0) && !aOnLinkPrefix.IsLinkLocal() && + static constexpr uint8_t kOnLinkPrefixLength = 64; + + return (aOnLinkPrefix.GetLength() == kOnLinkPrefixLength) && !aOnLinkPrefix.IsLinkLocal() && !aOnLinkPrefix.IsMulticast(); }