diff --git a/apps/sdlan/src/sdlan_network.erl b/apps/sdlan/src/sdlan_network.erl
index 9fbdde4..5960de4 100644
--- a/apps/sdlan/src/sdlan_network.erl
+++ b/apps/sdlan/src/sdlan_network.erl
@@ -224,6 +224,9 @@ handle_call({assign_ip_addr, ChannelPid, ClientId, Mac, NetAddr0}, _From,
     State = #state{network_id = NetworkId, ips = Ips, used_map = UsedMap, mask_len = MaskLen, aes_key = AesKey}) ->
 
     %% 分配ip地址的时候，以mac地址为唯一基准
+    lager:debug("[sdlan_network] alloc_ip, network_id: ~p, ips: ~p, client_id: ~p, mac: ~p, net_addr: ~p",
+        [NetworkId, Ips, ClientId, Mac, NetAddr0]),
+
     case client_model:alloc_ip(NetworkId, Ips, ClientId, Mac, NetAddr0) of
         {ok, Ip} ->
             %% 关闭之前的channel