From b7073504d8422afe1a57982fe21e25d31fa0c92b Mon Sep 17 00:00:00 2001
From: Luna Yao <40349250+ZnqbuZ@users.noreply.github.com>
Date: Sat, 21 Feb 2026 20:27:19 +0100
Subject: [PATCH] peer_mgr: use flat_map

---
 easytier/src/dns/peer_mgr.rs | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/easytier/src/dns/peer_mgr.rs b/easytier/src/dns/peer_mgr.rs
index d07d3a51..0422abc1 100644
--- a/easytier/src/dns/peer_mgr.rs
+++ b/easytier/src/dns/peer_mgr.rs
@@ -78,8 +78,7 @@ impl DnsPeerMgr {
             .chain(
                 self.peers
                     .iter()
-                    .map(|(_, info)| info.zones.into_iter())
-                    .flatten(),
+                    .flat_map(|(_, info)| info.zones.into_iter()),
             )
             .collect();
 
@@ -112,7 +111,7 @@ impl DnsPeerMgr {
                 self.peers.invalidate(&peer_id).await;
             }
         }
-        
+
         self.dirty.notify_one();
     }