diff --git a/conf/storage.conf b/conf/storage.conf
index c90322a..5a7be7a 100644
--- a/conf/storage.conf
+++ b/conf/storage.conf
@@ -19,6 +19,8 @@ group_name = group1
 #
 # bind IPv4 and IPv6 example: 192.168.2.100,2409:8a20:42d:2f40:587a:4c47:72c0:ad8e
 #
+# as any/all addresses, IPv4 is 0.0.0.0, IPv6 is ::
+#
 bind_addr =
 
 # if bind an address of this host when connect to other servers 
diff --git a/conf/storage_ids.conf b/conf/storage_ids.conf
index 878e313..36a0599 100644
--- a/conf/storage_ids.conf
+++ b/conf/storage_ids.conf
@@ -19,4 +19,4 @@
 
 100001   group1  192.168.0.196
 100002   group1  192.168.0.197
-100003   group1  [2409:8a20:42d:2f40:587a:4c47:72c0:ad8e]:100002
\ No newline at end of file
+100003   group1  [2409:8a20:42d:2f40:587a:4c47:72c0:ad8e]:100002
diff --git a/conf/tracker.conf b/conf/tracker.conf
index 1c207db..f96000e 100644
--- a/conf/tracker.conf
+++ b/conf/tracker.conf
@@ -12,6 +12,8 @@ disabled = false
 #
 # bind IPv4 and IPv6 example: 192.168.2.100,2409:8a20:42d:2f40:587a:4c47:72c0:ad8e
 #
+# as any/all addresses, IPv4 is 0.0.0.0, IPv6 is ::
+#
 bind_addr =
 
 # the tracker server port
diff --git a/tracker/tracker_proto.h b/tracker/tracker_proto.h
index 19c8674..c5e54a9 100644
--- a/tracker/tracker_proto.h
+++ b/tracker/tracker_proto.h
@@ -149,7 +149,7 @@ typedef struct
 typedef struct
 {
     unsigned char my_status;   //storage server status
-	char src_id[FDFS_STORAGE_ID_MAX_SIZE];  //src storage id
+    char src_id[FDFS_STORAGE_ID_MAX_SIZE];  //src storage id
 } TrackerStorageJoinBodyResp;
 
 typedef struct