diff --git a/components/net/netdev/include/netdev.h b/components/net/netdev/include/netdev.h
index 5ea8e96080387d1da4900b59c4bcfc1443d1363f..e9d8e38658ecfeb88332dbb59975e25ff8b45943 100644
--- a/components/net/netdev/include/netdev.h
+++ b/components/net/netdev/include/netdev.h
@@ -133,7 +133,7 @@ int netdev_register(struct netdev *netdev, const char *name, void *user_data);
 int netdev_unregister(struct netdev *netdev);
 
 /* Get network interface device object */
-struct netdev *netdev_get_first_link_up(void);
+struct netdev *netdev_get_first_by_flags(uint16_t flags);
 struct netdev *netdev_get_by_ipaddr(ip_addr_t *ip_addr);
 struct netdev *netdev_get_by_name(const char *name);
 #ifdef RT_USING_SAL
diff --git a/components/net/netdev/src/netdev.c b/components/net/netdev/src/netdev.c
index fbc08325b436ae7f0dfcc58abf24053b687d834a..71b1ec7ccd762c79a3bc5a96f9afd6f9c35f122a 100644
--- a/components/net/netdev/src/netdev.c
+++ b/components/net/netdev/src/netdev.c
@@ -134,12 +134,14 @@ int netdev_unregister(struct netdev *netdev)
 
 /**
  * This function will get the first network interface device
- * with the link_up status in network interface device list.
+ * with the flags in network interface device list.
+ * 
+ * @param flags the network interface device flags
  * 
  * @return != NULL: network interface device object
  *            NULL: get failed 
  */
-struct netdev *netdev_get_first_link_up(void)
+struct netdev *netdev_get_first_by_flags(uint16_t flags)
 {
     rt_base_t level;
     rt_slist_t *node = RT_NULL;
@@ -155,7 +157,7 @@ struct netdev *netdev_get_first_link_up(void)
     for (node = &(netdev_list->list); node; node = rt_slist_next(node))
     {
         netdev = rt_slist_entry(node, struct netdev, list);
-        if (netdev && netdev_is_up(netdev) && netdev_is_link_up(netdev))
+        if (netdev && (netdev->flags & flags) != 0)
         {
             rt_hw_interrupt_enable(level);
             return netdev;
@@ -679,7 +681,7 @@ static void netdev_auto_change_default(struct netdev *netdev)
 
     if (rt_memcmp(netdev, netdev_default, sizeof(struct netdev)) == 0)
     {
-        new_netdev = netdev_get_first_link_up();
+        new_netdev = netdev_get_first_by_flags(NETDEV_FLAG_LINK_UP);
         if (new_netdev)
         {
             netdev_set_default(new_netdev);
@@ -964,7 +966,7 @@ static int netdev_cmd_ping(char* target_name, rt_uint32_t times, rt_size_t size)
     else
     {
         /* using first internet up status network interface device */
-        netdev = netdev_get_first_link_up();
+        netdev = netdev_get_first_by_flags(NETDEV_FLAG_LINK_UP);
         if (netdev == RT_NULL || NETDEV_PING_IS_COMMONICABLE(netdev) == 0)
         {
             rt_kprintf("ping: network interface device get error.\n");
diff --git a/components/net/sal_socket/src/sal_socket.c b/components/net/sal_socket/src/sal_socket.c
index a63f5cafc5fd6973634620b6ed01f3b94a38cc4a..8f3149abd5fd813a19f72ea36c53375ac97c2e86 100644
--- a/components/net/sal_socket/src/sal_socket.c
+++ b/components/net/sal_socket/src/sal_socket.c
@@ -70,9 +70,9 @@ do {
     }                                                                             \
 }while(0)                                                                         \
 
-#define SAL_NETDEV_IS_COMMONICABLE(netdev)                                        \
+#define SAL_NETDEV_IS_UP(netdev)                                                  \
 do {                                                                              \
-    if (!netdev_is_up(netdev) || !netdev_is_link_up(netdev)){                     \
+    if (!netdev_is_up(netdev)) {                                                  \
         return -1;                                                                \
     }                                                                             \
 }while(0)                                                                         \
@@ -86,9 +86,9 @@ do {
 }while(0)                                                                         \
 
 #define SAL_NETDEV_NETDBOPS_VALID(netdev, pf, ops)                                \
-((netdev) && netdev_is_up(netdev) && netdev_is_link_up(netdev) &&                 \
+    ((netdev) && netdev_is_up(netdev) &&                                          \
     ((pf) = (struct sal_proto_family *) (netdev)->sal_user_data) != RT_NULL &&    \
-        (pf)->netdb_ops->ops)                                                     \
+    (pf)->netdb_ops->ops)                                                         \
 
 /**
  * SAL (Socket Abstraction Layer) initialize.
@@ -748,8 +748,8 @@ int sal_connect(int socket, const struct sockaddr *name, socklen_t namelen)
     /* get the socket object by socket descriptor */
     SAL_SOCKET_OBJ_GET(sock, socket);
 
-    /* check the network interface is commonicable  */
-    SAL_NETDEV_IS_COMMONICABLE(sock->netdev);
+    /* check the network interface is up status */
+    SAL_NETDEV_IS_UP(sock->netdev);
     /* check the network interface socket opreation */
     SAL_NETDEV_SOCKETOPS_VALID(sock->netdev, pf, connect);
 
@@ -792,8 +792,8 @@ int sal_recvfrom(int socket, void *mem, size_t len, int flags,
     /* get the socket object by socket descriptor */
     SAL_SOCKET_OBJ_GET(sock, socket);
 
-    /* check the network interface is commonicable  */
-    SAL_NETDEV_IS_COMMONICABLE(sock->netdev);
+    /* check the network interface is up status  */
+    SAL_NETDEV_IS_UP(sock->netdev);
     /* check the network interface socket opreation */
     SAL_NETDEV_SOCKETOPS_VALID(sock->netdev, pf, recvfrom);
 
@@ -826,8 +826,8 @@ int sal_sendto(int socket, const void *dataptr, size_t size, int flags,
     /* get the socket object by socket descriptor */
     SAL_SOCKET_OBJ_GET(sock, socket);
 
-    /* check the network interface is commonicable  */
-    SAL_NETDEV_IS_COMMONICABLE(sock->netdev);
+    /* check the network interface is up status  */
+    SAL_NETDEV_IS_UP(sock->netdev);
     /* check the network interface socket opreation */
     SAL_NETDEV_SOCKETOPS_VALID(sock->netdev, pf, sendto);
 
@@ -965,8 +965,8 @@ int sal_poll(struct dfs_fd *file, struct rt_pollreq *req)
     /* get the socket object by socket descriptor */
     SAL_SOCKET_OBJ_GET(sock, socket);
 
-    /* check the network interface is commonicable  */
-    SAL_NETDEV_IS_COMMONICABLE(sock->netdev);
+    /* check the network interface is up status  */
+    SAL_NETDEV_IS_UP(sock->netdev);
     /* check the network interface socket opreation */
     SAL_NETDEV_SOCKETOPS_VALID(sock->netdev, pf, poll);
 
@@ -985,8 +985,8 @@ struct hostent *sal_gethostbyname(const char *name)
     }
     else
     {
-        /* get the first network interface device with the link up status */
-        netdev = netdev_get_first_link_up();
+        /* get the first network interface device with up status */
+        netdev = netdev_get_first_by_flags(NETDEV_FLAG_UP);
         if (SAL_NETDEV_NETDBOPS_VALID(netdev, pf, gethostbyname))
         {
             return pf->netdb_ops->gethostbyname(name);
@@ -1008,8 +1008,8 @@ int sal_gethostbyname_r(const char *name, struct hostent *ret, char *buf,
     }
     else
     {
-        /* get the first network interface device with the link up status */
-        netdev = netdev_get_first_link_up();
+        /* get the first network interface device with up status */
+        netdev = netdev_get_first_by_flags(NETDEV_FLAG_UP);
         if (SAL_NETDEV_NETDBOPS_VALID(netdev, pf, gethostbyname_r))
         {
             return pf->netdb_ops->gethostbyname_r(name, ret, buf, buflen, result, h_errnop);
@@ -1033,8 +1033,8 @@ int sal_getaddrinfo(const char *nodename,
     }
     else
     {
-        /* get the first network interface device with the link up status */
-        netdev = netdev_get_first_link_up();
+        /* get the first network interface device with up status */
+        netdev = netdev_get_first_by_flags(NETDEV_FLAG_UP);
         if (SAL_NETDEV_NETDBOPS_VALID(netdev, pf, getaddrinfo))
         {
             return pf->netdb_ops->getaddrinfo(nodename, servname, hints, res);
@@ -1055,8 +1055,8 @@ void sal_freeaddrinfo(struct addrinfo *ai)
     }
     else
     {
-        /* get the first network interface device with the link up status */
-        netdev = netdev_get_first_link_up();
+        /* get the first network interface device with up status */
+        netdev = netdev_get_first_by_flags(NETDEV_FLAG_UP);
         if (SAL_NETDEV_NETDBOPS_VALID(netdev, pf, freeaddrinfo))
         {
             pf->netdb_ops->freeaddrinfo(ai);