diff --git a/apps/sdlan/src/sdlan_network.erl b/apps/sdlan/src/sdlan_network.erl
index bcbf1d3..c2a0c70 100644
--- a/apps/sdlan/src/sdlan_network.erl
+++ b/apps/sdlan/src/sdlan_network.erl
@@ -39,8 +39,8 @@
 -record(endpoint, {
     client_id :: binary(),
     ip :: integer(),
-    channel_pid :: undefined | pid(),
-    monitor_ref :: undefined | reference(),
+    channel_pid :: pid(),
+    monitor_ref :: reference(),
     hole :: undefined | #hole{},
     %% 记录ip和ip_v6的映射关系, #{ip_addr :: integer() => {}}
     v6_info :: undefined | #sdl_v6_info{}
@@ -401,7 +401,6 @@ handle_cast({update_hole, ClientId, Mac, Peer, NatType, V6Info}, State = #state{
                         mac = Mac,
                         ip = Ip
                     }),
-
                     broadcast(fun(#endpoint{channel_pid = ChannelPid}) ->
                         case is_process_alive(ChannelPid) of
                             true ->
@@ -416,7 +415,7 @@ handle_cast({update_hole, ClientId, Mac, Peer, NatType, V6Info}, State = #state{
             Endpoint = Endpoint0#endpoint{hole = #hole{peer = Peer, nat_type = NatType}, v6_info = V6Info},
 
             {noreply, State#state{endpoints = maps:put(Mac, Endpoint, Endpoints)}};
-        _ ->
+        error ->
             {noreply, State}
     end.