diff --git a/apps/sdlan/src/sdlan_stun.erl b/apps/sdlan/src/sdlan_stun.erl
index 0e784e4..dbd72b7 100644
--- a/apps/sdlan/src/sdlan_stun.erl
+++ b/apps/sdlan/src/sdlan_stun.erl
@@ -164,6 +164,7 @@ handle_packet(Sock, ClientIp, ClientPort, <<?PACKET_STUN_REQUEST:8, Body/binary>
 %% 处理网络的权限请求
 handle_packet(Sock, ClientIp, ClientPort, <<?PACKET_POLICY_REQUEST:8, Body/binary>>) ->
     maybe
+        logger:debug("[sdlan_stun] get policy request 00"),
         PolicyRequest = catch sdlan_pb:decode_msg(Body, sdl_policy_request),
         #sdl_stun_request{network_id = NetworkId} ?= PolicyRequest,
         logger:debug("[sdlan_stun] get policy request, network_id: ~p, 11", [NetworkId]),