diff --git a/apps/sdlan/src/http_handler/node_handler.erl b/apps/sdlan/src/http_handler/node_handler.erl
index d00aff3..946f868 100644
--- a/apps/sdlan/src/http_handler/node_handler.erl
+++ b/apps/sdlan/src/http_handler/node_handler.erl
@@ -15,23 +15,6 @@
 %% API
 -export([handle_request/4]).
 
-handle_request("POST", "/node/list", _, #{<<"network_id">> := NetworkId}) when NetworkId > 0 ->
-    Pid = sdlan_network:get_pid(NetworkId),
-    UsedMap = sdlan_network:get_used_map(Pid),
-
-    Clients = client_model:get_clients(NetworkId),
-    ClientInfos = lists:map(fun(#client{client_id = ClientId, mac = Mac, ip = Ip, status = Status}) ->
-        Info = #{
-            <<"client_id">> => ClientId,
-            <<"mac">> => Mac,
-            <<"ip">> => sdlan_ipaddr:int_to_ipv4(Ip),
-            <<"status">> => atom_to_binary(Status)
-        },
-        maps:merge(Info, maps:get(Mac, UsedMap, #{}))
-                            end, Clients),
-
-    {ok, 200, sdlan_util:json_data(ClientInfos)};
-
 handle_request("POST", "/node/disable", _, #{<<"network_id">> := NetworkId, <<"client_id">> := ClientId}) when NetworkId > 0 ->
     case sdlan_network:get_pid(NetworkId) of
         undefined ->
diff --git a/apps/sdlan/src/sdlan_network.erl b/apps/sdlan/src/sdlan_network.erl
index 22696e8..7f881db 100644
--- a/apps/sdlan/src/sdlan_network.erl
+++ b/apps/sdlan/src/sdlan_network.erl
@@ -23,7 +23,7 @@
 
 %% API
 -export([start_link/2]).
--export([get_name/1, get_pid/1, lookup_pid/1, attach/6, peer_info/3, unregister/3, debug_info/1, get_network_id/1, get_used_map/1, arp_query/2]).
+-export([get_name/1, get_pid/1, lookup_pid/1, attach/6, peer_info/3, unregister/3, debug_info/1, get_network_id/1, arp_query/2]).
 -export([forward/5, update_hole/6, disable_client/2, dropout_client/2]).
 -export([test_event/1]).
 
@@ -38,6 +38,7 @@
 %% ip的使用信息, 记录Node的运行时状态信息
 -record(endpoint, {
     client_id :: binary(),
+    mac :: binary(),
     ip :: integer(),
     hostname :: binary(),
     hole :: #hole{},
@@ -51,18 +52,13 @@
     domain :: binary(),
     ipaddr :: binary(),
     mask_len :: integer(),
-    owner_id :: integer(),
-
     %% 设置网络带宽
     throttle_key :: atom(),
-
     %% 转发流量统计
     forward_bytes = 0,
-
     %% 同一个网络下公用的密钥, 采用AES-256加密算法；随机生成
     aes_key :: binary(),
-
-    %% 记录已经使用了的ip, #{mac :: integer() => #endpoint{}}
+    %% 记录已经使用了的ip, #{mac => #endpoint{}}
     endpoints = #{}
 }).
 
@@ -122,7 +118,7 @@ forward(Pid, Sock, SrcMac, DstMac, Packet) when is_pid(Pid), is_binary(SrcMac),
 update_hole(Pid, ClientId, Mac, Peer, NatType, V6Info) when is_pid(Pid), is_binary(ClientId), is_binary(Mac), is_integer(NatType) ->
     gen_server:cast(Pid, {update_hole, ClientId, Mac, Peer, NatType, V6Info}).
 
--spec disable_client(Pid :: pid(), ClientId :: binary()) -> ok | error.
+-spec disable_client(Pid :: pid(), ClientId :: binary()) -> ok.
 disable_client(Pid, ClientId) when is_pid(Pid), is_binary(ClientId) ->
     gen_server:call(Pid, {disable_client, ClientId}).
 
@@ -135,12 +131,6 @@ dropout_client(Pid, ClientId) when is_pid(Pid), is_binary(ClientId) ->
 debug_info(Pid) when is_pid(Pid) ->
     gen_server:call(Pid, debug_info).
 
--spec get_used_map(Pid :: pid()) -> map().
-get_used_map(Pid) when is_pid(Pid) ->
-    gen_server:call(Pid, get_used_map);
-get_used_map(undefined) ->
-    #{}.
-
 %% @doc Spawns the server and registers the local name (unique)
 -spec(start_link(Name :: atom(), Id :: integer()) ->
     {ok, Pid :: pid()} | ignore | {error, Reason :: term()}).
@@ -160,7 +150,7 @@ init([Id]) when is_integer(Id) ->
     case sdlan_api:get_network(Id) of
         {ok, #{<<"ipaddr">> := Null}} when Null == <<"null">>; Null == <<"NULL">> ->
             ignore;
-        {ok, #{<<"id">> := Id, <<"name">> := Name, <<"domain">> := Domain, <<"ipaddr">> := IpAddr0, <<"owner_id">> := OwnerId}} ->
+        {ok, #{<<"id">> := Id, <<"name">> := Name, <<"domain">> := Domain, <<"ipaddr">> := IpAddr0}} ->
             {IpAddr, MaskLen} = parse_ipaddr(IpAddr0),
             AesKey = sdlan_util:rand_byte(32),
 
@@ -173,8 +163,7 @@ init([Id]) when is_integer(Id) ->
             erlang:start_timer(?FLOW_REPORT_INTERVAL, self(), flow_report_ticker),
             sdlan_domain_regedit:insert(Domain),
 
-            {ok, #state{network_id = Id, name = Name, domain = Domain, ipaddr = IpAddr, owner_id = OwnerId,
-                mask_len = MaskLen, aes_key = AesKey, throttle_key = ThrottleKey}};
+            {ok, #state{network_id = Id, name = Name, domain = Domain, ipaddr = IpAddr, mask_len = MaskLen, aes_key = AesKey, throttle_key = ThrottleKey}};
         {error, Reason} ->
             logger:warning("[sdlan_network] load network: ~p, get error: ~p", [Id, Reason]),
             ignore
@@ -198,43 +187,17 @@ handle_call({attach, Peer, ClientId, Mac, Ip, Hostname}, _From,
         [NetworkId, ClientId, sdlan_util:format_mac(Mac), sdlan_ipaddr:int_to_ipv4(Ip)]),
     %% 添加域名->ip的映射关系
     sdlan_hostname_regedit:insert(Hostname, Domain, Ip),
-    NEndpoints = maps:put(Mac, #endpoint{client_id = ClientId, ip = Ip, hostname = Hostname, hole = #hole{peer = Peer, nat_type = 0}}, Endpoints),
+    Endpoint = #endpoint{client_id = ClientId, mac = Mac, ip = Ip, hostname = Hostname, hole = #hole{peer = Peer, nat_type = 0}},
 
-    {reply, {ok, Domain, MaskLen, AesKey}, State#state{endpoints = NEndpoints}};
-
-handle_call(get_used_map, _From, State = #state{endpoints = Endpoints}) ->
-    UsedInfos = maps:map(fun(_, #endpoint{hole = Hole, v6_info = V6Info}) ->
-        HoleMap = case Hole of
-                      #hole{peer = {NatIp, NatPort}} ->
-                          #{
-                              <<"nat_ip">> => sdlan_ipaddr:int_to_ipv4(sdlan_ipaddr:ipv4_to_int(NatIp)),
-                              <<"nat_port">> => NatPort
-                          };
-                      _ ->
-                          #{}
-                  end,
-
-        V6Map = case V6Info of
-                    #sdl_v6_info{v6 = IpV6, port = Port} ->
-                        #{
-                            <<"v6_ip">> => sdlan_ipaddr:ipv6_bytes_to_binary(IpV6),
-                            <<"v6_port">> => Port
-                        };
-                    _ ->
-                        #{}
-                end,
-        #{<<"hole">> => HoleMap, <<"v6_info">> => V6Map}
-                         end, Endpoints),
-
-    {reply, {ok, UsedInfos}, State};
+    {reply, {ok, Domain, MaskLen, AesKey}, State#state{endpoints = maps:put(Mac, Endpoint, Endpoints)}};
 
 %% client设置为禁止状态，不允许重连
 handle_call({disable_client, ClientId}, _From, State = #state{endpoints = Endpoints}) ->
-    case lists:search(fun({_, #endpoint{client_id = ClientId0}}) -> ClientId =:= ClientId0 end, maps:to_list(Endpoints)) of
-        {value, {Mac, #endpoint{}}} ->
+    case search_endpoint(fun(_, #endpoint{client_id = ClientId0}) -> ClientId =:= ClientId0 end, Endpoints) of
+        {ok, Mac, _} ->
             {reply, ok, State#state{endpoints = maps:remove(Mac, Endpoints)}};
-        false ->
-            {reply, error, State}
+        error ->
+            {reply, ok, State}
     end;
 
 handle_call(get_network_id, _From, State = #state{network_id = NetworkId}) ->
@@ -265,19 +228,18 @@ handle_call({peer_info, SrcMac, DstMac}, _From, State = #state{endpoints = Endpo
                 }),
 
                 EventPacket = <<?PACKET_EVENT, ?PACKET_EVENT_SEND_REGISTER, Event/binary>>,
-                sdlan_stun_pool:send_packets([{DstNatPeer, EventPacket}])
+                sdlan_stun_pool:send_packet(DstNatPeer, EventPacket)
             end,
             {reply, {ok, {DstNatPeer, DstNatType}, DstV6Info}, State};
         _ ->
             {reply, error, State}
     end;
 
-handle_call(debug_info, _From, State = #state{network_id = NetworkId, ipaddr = IpAddr, mask_len = MaskLen, owner_id = OwnerId, endpoints = Endpoints}) ->
+handle_call(debug_info, _From, State = #state{network_id = NetworkId, ipaddr = IpAddr, mask_len = MaskLen, endpoints = Endpoints}) ->
     Reply = #{
         <<"network_id">> => NetworkId,
         <<"ipaddr">> => IpAddr,
         <<"mask_len">> => MaskLen,
-        <<"owner_id">> => OwnerId,
         <<"used_ips">> => lists:map(fun format_endpoint/1, maps:to_list(Endpoints))
     },
     {reply, Reply, State}.
@@ -326,15 +288,9 @@ handle_cast({forward, Sock, SrcMac, DstMac, Packet}, State = #state{network_id =
         true ->
             PacketBytes = byte_size(Packet),
             %% 消息广播
-            broadcast(fun(#endpoint{hole = Hole}) ->
-                case Hole of
-                    #hole{peer = {NatIp, NatPort}} ->
-                        gen_udp:send(Sock, NatIp, NatPort, Packet);
-                    _ ->
-                        ok
-                end
+            broadcast(fun(#endpoint{hole = #hole{peer = {NatIp, NatPort}}}) ->
+                gen_udp:send(Sock, NatIp, NatPort, Packet)
                       end, [SrcMac], Endpoints),
-
             %% client和stun之间必须有心跳机制保持nat映射可用，并且通过服务转发的udp包肯定可以到达对端的nat
             logger:debug("[sdlan_network] broadcast data networkd_id: ~p, src_mac: ~p, dst_mac: ~p",
                 [NetworkId, sdlan_util:format_mac(SrcMac), sdlan_util:format_mac(DstMac)]),
@@ -354,35 +310,25 @@ handle_cast({forward, _Sock, SrcMac, DstMac, _Packet}, State = #state{network_id
 %% 删除ip的占用并关闭channel
 handle_cast({unregister, _ClientId, Mac}, State = #state{network_id = NetworkId, endpoints = Endpoints}) ->
     logger:debug("[sdlan_network] networkd_id: ~p, unregister Mac: ~p", [NetworkId, sdlan_util:format_mac(Mac)]),
-    case maps:take(Mac, Endpoints) of
-        error ->
-            {noreply, State};
-        {#endpoint{monitor_ref = MRef}, NEndpoints} ->
-            is_reference(MRef) andalso demonitor(MRef),
-            {noreply, State#state{endpoints = NEndpoints}}
-    end;
+    {noreply, State#state{endpoints = maps:remove(Mac, Endpoints)}};
 
 %% 需要判断，client是属于当前网络的
 handle_cast({update_hole, ClientId, Mac, Peer, NatType, V6Info}, State = #state{endpoints = Endpoints}) ->
     case maps:find(Mac, Endpoints) of
-        {ok, Endpoint0 = #endpoint{client_id = ClientId0, ip = Ip, hole = OldHole}} when ClientId =:= ClientId0 ->
-            case OldHole =:= undefined orelse (OldHole#hole.peer =/= Peer orelse OldHole#hole.nat_type =/= NatType) of
-                true ->
-                    NatChangedEvent = sdlan_pb:encode_msg(#sdl_nat_changed_event{
-                        mac = Mac,
-                        ip = Ip
-                    }),
-                    EventPacket = <<?PACKET_EVENT, ?PACKET_EVENT_NAT_CHANGED, NatChangedEvent>>,
+        {ok, Endpoint0 = #endpoint{ip = Ip, client_id = ClientId0, hole = OldHole}} when ClientId =:= ClientId0 ->
+            NHole = #hole{peer = Peer, nat_type = NatType},
+            maybe
+                true ?= same_hole(OldHole, NHole),
+                NatChangedEvent = sdlan_pb:encode_msg(#sdl_nat_changed_event{
+                    mac = Mac,
+                    ip = Ip
+                }),
+                EventPacket = <<?PACKET_EVENT, ?PACKET_EVENT_NAT_CHANGED, NatChangedEvent/binary>>,
 
-                    broadcast(fun(#endpoint{hole = #hole{peer = Peer}}) ->
-                        sdlan_stun_pool:send_packet(Peer, EventPacket)
-                              end, [Mac], Endpoints);
-                false ->
-                    ok
+                EndpointPeers = endpoint_peers([Mac], Endpoints),
+                sdlan_stun_pool:send_packets(EndpointPeers, EventPacket)
             end,
-            Endpoint = Endpoint0#endpoint{hole = #hole{peer = Peer, nat_type = NatType}, v6_info = V6Info},
-
-            {noreply, State#state{endpoints = maps:put(Mac, Endpoint, Endpoints)}};
+            {noreply, State#state{endpoints = maps:put(Mac, Endpoint0#endpoint{hole = NHole, v6_info = V6Info}, Endpoints)}};
         _ ->
             {noreply, State}
     end.
@@ -411,10 +357,9 @@ terminate(Reason, #state{network_id = NetworkId, endpoints = Endpoints}) ->
     NetworkShutdownEvent = sdlan_pb:encode_msg(#sdl_network_shutdown_event {
         message = <<"Network shutdown">>
     }),
-    EventPacket = <<?PACKET_EVENT, ?PACKET_EVENT_NETWORK_SHUTDOWN, NetworkShutdownEvent>>,
-    broadcast(fun(#endpoint{hole = #hole{peer = Peer}}) ->
-        sdlan_stun_pool:send_packet(Peer, EventPacket)
-              end, Endpoints),
+    EventPacket = <<?PACKET_EVENT, ?PACKET_EVENT_NETWORK_SHUTDOWN, NetworkShutdownEvent/binary>>,
+    EndpointPeers = endpoint_peers([], Endpoints),
+    sdlan_stun_pool:send_packets(EndpointPeers, EventPacket),
     ok.
 
 %% @private
@@ -443,10 +388,6 @@ limiting_check(ThrottleKey) ->
             end
     end.
 
--spec broadcast(Fun :: binary(), Endpoints :: map()) -> no_return().
-broadcast(Fun, Endpoints) when is_function(Fun, 1), is_map(Endpoints) ->
-    broadcast(Fun, [], Endpoints).
-
 -spec broadcast(Fun :: binary(), ExcludeMacs :: [binary()], Endpoints :: map()) -> no_return().
 broadcast(Fun, ExcludeMacs, Endpoints) when is_function(Fun, 1), is_map(Endpoints), is_list(ExcludeMacs) ->
     maps:foreach(fun(Mac, Endpoint) ->
@@ -458,17 +399,6 @@ broadcast(Fun, ExcludeMacs, Endpoints) when is_function(Fun, 1), is_map(Endpoint
         end
                  end, Endpoints).
 
--spec broadcast_peers(Fun :: binary(), ExcludeMacs :: [binary()], Endpoints :: map()) -> no_return().
-broadcast_peers(Fun, ExcludeMacs, Endpoints) when is_function(Fun, 1), is_map(Endpoints), is_list(ExcludeMacs) ->
-    maps:filtermap(fun(Mac, Endpoint) ->
-        case lists:member(Mac, ExcludeMacs) of
-            true ->
-                ok;
-            false ->
-                Fun(Endpoint)
-        end
-                 end, Endpoints).
-
 %% 解析IpAddr: <<"192.168.172/24">>
 -spec parse_ipaddr(IpAddr0 :: binary()) -> {IpAddr :: binary(), MaskLen :: integer()}.
 parse_ipaddr(IpAddr0) when is_binary(IpAddr0) ->
@@ -522,4 +452,21 @@ search_endpoint0(F, Iter) when is_function(F, 1) ->
             end;
         'none' ->
             error
-    end.
\ No newline at end of file
+    end.
+
+-spec same_hole(Hole :: #hole{}, Hole :: #hole{}) -> boolean().
+same_hole(#hole{peer = OldPeer, nat_type = OldNatType}, #hole{peer = Peer, nat_type = NatType}) when OldPeer =:= Peer, OldNatType =:= NatType ->
+    true;
+same_hole(_, _) ->
+    false.
+
+-spec endpoint_peers(ExcludeMacs :: list(), Endpoints :: map()) -> Peers :: list().
+endpoint_peers(ExcludeMacs, Endpoints) when is_list(ExcludeMacs), is_map(Endpoints) ->
+    maps:values(maps:filtermap(fun(Mac, #endpoint{hole = #hole{peer = Peer}}) ->
+        case lists:member(Mac, ExcludeMacs) of
+            true ->
+                false;
+            false ->
+                {true, Peer}
+        end
+                               end, Endpoints)).
\ No newline at end of file
diff --git a/apps/sdlan/src/sdlan_stun_pool.erl b/apps/sdlan/src/sdlan_stun_pool.erl
index 729d91f..3cbdcc1 100644
--- a/apps/sdlan/src/sdlan_stun_pool.erl
+++ b/apps/sdlan/src/sdlan_stun_pool.erl
@@ -16,7 +16,7 @@
 -behaviour(gen_server).
 
 %% API
--export([start_link/0, send_packets/1, send_packet/2]).
+-export([start_link/0, send_packets/2, send_packet/2]).
 
 %% gen_server callbacks
 -export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).
@@ -33,11 +33,13 @@
 %%% API
 %%%===================================================================
 
+-spec send_packet(Peer :: {Ip :: inet:ip4_address(), Port :: integer()}, Packet :: binary()) -> no_return().
 send_packet(Peer, Packet) ->
     gen_server:cast(?SERVER, {send_packet, Peer, Packet}).
 
-send_packets(Packets) when is_list(Packets) ->
-    gen_server:cast(?SERVER, {send_packets, Packets}).
+-spec send_packet(Peers :: [{Ip :: inet:ip4_address(), Port :: integer()}], Packet :: binary()) -> no_return().
+send_packets(Peers, Packet) when is_list(Peers), is_binary(Packet) ->
+    gen_server:cast(?SERVER, {send_packets, Peers, Packet}).
 
 %% @doc Spawns the server and registers the local name (unique)
 -spec(start_link() ->
@@ -103,9 +105,9 @@ handle_cast({send_packet, {Ip, Port}, Packet}, State = #state{workers = Workers,
     NewIdx = (Idx rem Num) + 1,
     {noreply, State#state{idx = NewIdx}};
 
-handle_cast({send_packets, Packets}, State = #state{workers = Workers, idx = Idx, num = Num}) ->
+handle_cast({send_packets, Peers, Packet}, State = #state{workers = Workers, idx = Idx, num = Num}) ->
     {Sock, _} = element(Idx, Workers),
-    lists:foreach(fun({{Ip, Port}, Data}) -> gen_udp:send(Sock, Ip, Port, Data) end, Packets),
+    lists:foreach(fun({Ip, Port}) -> gen_udp:send(Sock, Ip, Port, Packet) end, Peers),
     NewIdx = (Idx rem Num) + 1,
     {noreply, State#state{idx = NewIdx}}.