diff --git a/easytier/src/dns/peer_mgr.rs b/easytier/src/dns/peer_mgr.rs
index 67e420e9..097bbb7a 100644
--- a/easytier/src/dns/peer_mgr.rs
+++ b/easytier/src/dns/peer_mgr.rs
@@ -1,28 +1,32 @@
-use std::sync::Arc;
-use std::sync::atomic::{AtomicBool, Ordering};
-use std::time::Duration;
+use crate::common::config::ConfigLoader;
+use crate::common::PeerId;
+use crate::dns::config::{DnsExportConfig, DnsGlobalCtxExt};
+use crate::dns::utils::NameServerAddrGroup;
+use crate::peer_center::instance::PeerCenterPeerManagerTrait;
+use crate::peers::peer_manager::PeerManager;
+use crate::proto;
+use crate::proto::dns::{DnsPeerManagerRpc, DnsPeerManagerRpcClientFactory, GetExportConfigRequest, GetExportConfigResponse, ZoneData};
+use crate::proto::rpc_types;
+use crate::proto::rpc_types::controller::BaseController;
+use anyhow::Context;
 use derivative::Derivative;
 use derive_more::Deref;
 use moka::future::Cache;
-use url::Url;
-use anyhow::Context;
-use crate::common::config::ConfigLoader;
-use crate::common::PeerId;
-use crate::dns::config::DnsGlobalCtxExt;
-use crate::peer_center::instance::PeerCenterPeerManagerTrait;
-use crate::peers::peer_manager::PeerManager;
-use crate::proto::dns::{DeterministicDigest, DnsPeerManagerRpc, DnsPeerManagerRpcClientFactory, DnsSnapshot, GetExportConfigRequest, GetExportConfigResponse};
-use crate::proto::rpc_types;
-use crate::proto::rpc_types::controller::BaseController;
+use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::Arc;
+use std::time::Duration;
+use itertools::Itertools;
+use serde::Serialize;
+use crate::utils::DeterministicDigest;
 
 #[derive(Debug, Clone)]
 pub struct DnsPeerInfo {
     digest: Vec<u8>,
-    config: GetExportConfigResponse,
+    config: DnsExportConfig,
 }
 
 impl DnsPeerInfo {
-    pub fn new(config: GetExportConfigResponse) -> Self {
+    pub fn new(config: DnsExportConfig) -> Self {
         Self {
             digest: config.digest(),
             config,
@@ -30,6 +34,35 @@ impl DnsPeerInfo {
     }
 }
 
+#[derive(Debug, Clone, Default, Serialize)]
+pub struct DnsSnapshot {
+    pub(super) zones: Vec<ZoneData>,
+    pub(super) addresses: NameServerAddrGroup,
+    pub(super) listeners: NameServerAddrGroup,
+}
+
+impl From<DnsSnapshot> for proto::dns::DnsSnapshot {
+    fn from(value: DnsSnapshot) -> Self {
+        Self {
+            zones: value.zones,
+            addresses: value.addresses.into(),
+            listeners: value.listeners.into(),
+        }
+    }
+}
+
+impl TryFrom<proto::dns::DnsSnapshot> for DnsSnapshot {
+    type Error = anyhow::Error;
+
+    fn try_from(value: proto::dns::DnsSnapshot) -> Result<Self, Self::Error> {
+        Ok(Self {
+            zones: value.zones,
+            addresses: (&value.addresses).try_into()?,
+            listeners: (&value.listeners).try_into()?,
+        })
+    }
+}
+
 const DNS_PEER_TTL: Duration = Duration::from_secs(3);
 
 #[derive(Derivative, Deref)]
@@ -46,10 +79,7 @@ impl DnsPeerMgr {
     pub fn new(peer_mgr: Arc<PeerManager>) -> Self {
         Self {
             mgr: peer_mgr.clone(),
-            peers: Cache::builder()
-                .time_to_live(DNS_PEER_TTL)
-                .build()
-                .into(),
+            peers: Cache::builder().time_to_live(DNS_PEER_TTL).build(),
             dirty: AtomicBool::new(true),
         }
     }
@@ -60,27 +90,17 @@ impl DnsPeerMgr {
 
         let mut zones = Vec::new();
 
-        zones.extend(config.zones.iter().map(Into::into));
-        zones.extend(global_ctx.dns_self_zone().as_ref().map(Into::into));
+        zones.extend(config.zones.iter().cloned().map_into());
+        zones.extend(global_ctx.dns_self_zone().map(Into::into));
 
         for (_, info) in self.peers.iter() {
-            zones.extend(info.config.zones.clone().into_iter());
+            zones.extend(info.config.zones.iter().cloned());
         }
 
         DnsSnapshot {
             zones,
-            addresses: config
-                .addresses
-                .clone()
-                .into_iter()
-                .map(Into::into)
-                .collect(),
-            listeners: config
-                .listeners
-                .iter()
-                .map(Url::from)
-                .map(Into::into)
-                .collect(),
+            addresses: config.addresses.clone(),
+            listeners: config.listeners.clone(),
         }
     }
 
@@ -96,7 +116,7 @@ impl DnsPeerMgr {
                 self.peers.insert(peer_id, DnsPeerInfo::new(config)).await;
             }
             Err(e) => {
-                tracing::warn!("failed to fetch dns config from peer {}: {:?}", peer_id, e);
+                tracing::warn!("failed to fetch dns export config from peer {}: {:?}", peer_id, e);
                 self.peers.invalidate(&peer_id).await;
             }
         }
@@ -104,7 +124,7 @@ impl DnsPeerMgr {
         self.dirty.store(true, Ordering::Release);
     }
 
-    async fn fetch(&self, peer_id: PeerId) -> anyhow::Result<GetExportConfigResponse> {
+    async fn fetch(&self, peer_id: PeerId) -> anyhow::Result<DnsExportConfig> {
         self.get_peer_rpc_mgr()
             .rpc_client()
             .scoped_client::<DnsPeerManagerRpcClientFactory<BaseController>>(
@@ -129,4 +149,4 @@ impl DnsPeerManagerRpc for DnsPeerMgr {
     ) -> rpc_types::error::Result<GetExportConfigResponse> {
         Ok(self.get_global_ctx_ref().dns_export_config())
     }
-}
\ No newline at end of file
+}