diff --git a/inc/MESA_jump_layer.h b/inc/MESA_jump_layer.h
index d15578b..d5715fe 100644
--- a/inc/MESA_jump_layer.h
+++ b/inc/MESA_jump_layer.h
@@ -13,18 +13,45 @@ extern "C" {
 
 const char *MESA_jump_layer_get_last_error(void);
 
+
 /*
-	The raw_layer_type and expect_layer_type refer to sapp_base.h->enum addr_type_t
+	CHN : 数据包头部偏移函数.
+
+	参数:
+		raw_data: 当前层的头部指针;
+		raw_layer_type: 当前层的地址类型, 详见: enum addr_type_t ;
+		expect_layer_type: 期望跳转到的地址类型, 详见:  enum addr_type_t ;
+
+	返回值:
+		NULL: 无此地址;
+		NON-NULL: 对应层的头部地址.
+
+	举例:
+		假设当前层为Ethernet, 起始包头地址为this_layer_hdr, 想跳转到IPv6层头部:
+		struct ip6_hdr *ip6_header;
+		ip6_header = MESA_net_jump_to_layer(this_layer_hdr, ADDR_TYPE_MAC, ADDR_TYPE_IPV6);
 */
 const void *MESA_jump_layer(const void *raw_data,  int raw_layer_type, int expect_layer_type);
 
+/*
+	MESA_jump_layer_greedy与MESA_jump_layer的区别:
+	   对于隧道嵌套协议来说,
+	       MESA_jump_layer跳转到第一个expect_layer_type;
+	       MESA_jump_layer_greedy跳转到最内层的expect_layer_type; 
+*/
 const void *MESA_jump_layer_greedy(const void *raw_data, int raw_layer_type, int expect_layer_type);
 
 
-const char *MESA_jump_layer_ipv4_ntop(const struct ip *ip4_hdr, char *out_buf, int buf_len );
 
+/* 向前兼容以前的接口名称, 作用同上 */
+const void *MESA_net_jump_to_layer(const void *raw_data,  int raw_layer_type, int expect_layer_type);
+const void *MESA_net_jump_to_layer_greedy(const void *raw_data, int raw_layer_type, int expect_layer_type);
+
+
+
+const char *MESA_jump_layer_ipv4_ntop(const struct ip *ip4_hdr, char *out_buf, int buf_len );
 const char *MESA_jump_layer_ipv6_ntop(const struct ip6_hdr *ip6_hdr, char *out_buf, int buf_len);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/src/MESA_jump_layer.cpp b/src/MESA_jump_layer.cpp
index ebbf164..04016eb 100644
--- a/src/MESA_jump_layer.cpp
+++ b/src/MESA_jump_layer.cpp
@@ -1332,6 +1332,11 @@ const void *MESA_jump_layer(const void *raw_data,  int raw_layer_type, int expec
 	return ((const char *)raw_data + ret);
 }
 
+const void *MESA_net_jump_to_layer(const void *raw_data,  int raw_layer_type, int expect_layer_type)
+{
+	return MESA_jump_layer(raw_data, raw_layer_type, expect_layer_type);
+}
+
 /*
 	与MESA_jump_layer()的区别:
 		MESA_jump_layer()从最外层开始, 找到第一个符合条件的层就退出;
@@ -1425,6 +1430,11 @@ done:
 	return success_layer;
 }
 
+const void *MESA_net_jump_to_layer_greedy(const void *raw_data, int raw_layer_type, int expect_layer_type)
+{
+	return MESA_jump_layer_greedy(raw_data, raw_layer_type, expect_layer_type);
+}
+
 /* 模拟tcpdump格式:   192.168.40.137.22 > 192.168.36.40.49429  */
 const char *MESA_jump_layer_ipv4_ntop(const struct ip *ip4_hdr, char *out_buf, int buf_len )
 {