From 8be11bb01fd8d2002117701979ab048741ef5ce0 Mon Sep 17 00:00:00 2001
From: Antoine James <antoine@ethereum.org>
Date: Fri, 28 Nov 2025 16:51:50 +0100
Subject: [PATCH] fix(peerdb): use start_slot instead of end_slot for safer
 actions

---
 beacon_node/lighthouse_network/src/peer_manager/peerdb.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/beacon_node/lighthouse_network/src/peer_manager/peerdb.rs b/beacon_node/lighthouse_network/src/peer_manager/peerdb.rs
index 87337cafcf5..dc1686523f7 100644
--- a/beacon_node/lighthouse_network/src/peer_manager/peerdb.rs
+++ b/beacon_node/lighthouse_network/src/peer_manager/peerdb.rs
@@ -259,10 +259,10 @@ impl<E: EthSpec> PeerDB<E> {
                 info.is_connected()
                     && match info.sync_status() {
                         SyncStatus::Synced { info } => {
-                            info.has_slot(epoch.end_slot(E::slots_per_epoch()))
+                            info.has_slot(epoch.start_slot(E::slots_per_epoch()))
                         }
                         SyncStatus::Advanced { info } => {
-                            info.has_slot(epoch.end_slot(E::slots_per_epoch()))
+                            info.has_slot(epoch.start_slot(E::slots_per_epoch()))
                         }
                         SyncStatus::IrrelevantPeer
                         | SyncStatus::Behind { .. }
@@ -332,7 +332,7 @@ impl<E: EthSpec> PeerDB<E> {
             info.is_connected()
                 && match info.sync_status() {
                     SyncStatus::Synced { info } | SyncStatus::Advanced { info } => {
-                        info.has_slot(epoch.end_slot(E::slots_per_epoch()))
+                        info.has_slot(epoch.start_slot(E::slots_per_epoch()))
                     }
                     SyncStatus::IrrelevantPeer
                     | SyncStatus::Behind { .. }