diff --git a/0029-fix-EISCONN-err-and-remove-same-customized-modificat.patch b/0029-fix-EISCONN-err-and-remove-same-customized-modificat.patch
new file mode 100644
index 0000000000000000000000000000000000000000..91ac15ef74201b88990a33a2691d65b553343836
--- /dev/null
+++ b/0029-fix-EISCONN-err-and-remove-same-customized-modificat.patch
@@ -0,0 +1,114 @@
+From ec2f5414c6c98b63376e4bce9534abc5c01ce13c Mon Sep 17 00:00:00 2001
+From: wuchangsheng <wuchangsheng2@huawei.com>
+Date: Thu, 6 Oct 2022 18:47:06 +0800
+Subject: [PATCH] fix EISCONN err and remove same customized modification
+
+---
+ src/api/api_msg.c      | 22 ++--------------------
+ src/include/lwipsock.h | 33 ++++-----------------------------
+ 2 files changed, 6 insertions(+), 49 deletions(-)
+
+diff --git a/src/api/api_msg.c b/src/api/api_msg.c
+index 2dded75..1fedaad 100644
+--- a/src/api/api_msg.c
++++ b/src/api/api_msg.c
+@@ -1334,25 +1334,7 @@ lwip_netconn_do_connected(void *arg, struct tcp_pcb *pcb, err_t err)
+   }
+ 
+ #if USE_LIBOS
+-  if (CONN_TYPE_IS_HOST(conn)) {
+-    LWIP_DEBUGF(API_MSG_DEBUG,
+-        ("libos outgoing connection abort fd=%d\n", conn->socket));
+-    return ERR_ABRT;
+-  }
+-  
+-  LWIP_DEBUGF(API_MSG_DEBUG, ("libos outgoing connection established\n"));
+-  if (CONN_TYPE_HAS_INPRG(conn) && CONN_TYPE_HAS_HOST(conn)) {
+-    int s = conn->socket;
+-    struct lwip_sock *sock = get_socket_without_errno(s);
+-  
+-    if (!!sock) {
+-      posix_api->shutdown_fn(s, SHUT_RDWR);
+-      LWIP_DEBUGF(API_MSG_DEBUG,
+-          ("linux outgoing connection abort fd=%d\n", s));
+-    }
+-  }
+-  SET_CONN_TYPE_LIBOS(conn);
+-  add_epoll_event(conn, EPOLLOUT);
++  gazelle_connected_callback(conn);
+ #endif
+ 
+   LWIP_ASSERT("conn->state == NETCONN_CONNECT", conn->state == NETCONN_CONNECT);
+@@ -1417,7 +1399,7 @@ lwip_netconn_do_connect(void *m)
+         /* Prevent connect while doing any other action. */
+         if (msg->conn->state == NETCONN_CONNECT) {
+           err = ERR_ALREADY;
+-        } else if (msg->conn->pcb.tcp->state != ESTABLISHED) {
++        } else if (msg->conn->pcb.tcp->state == ESTABLISHED) {
+           err = ERR_ISCONN;
+         } else {
+           setup_tcp(msg->conn);
+diff --git a/src/include/lwipsock.h b/src/include/lwipsock.h
+index 3c5c44b..912d471 100644
+--- a/src/include/lwipsock.h
++++ b/src/include/lwipsock.h
+@@ -93,13 +93,14 @@ struct lwip_sock {
+ #endif
+ 
+ #if USE_LIBOS
++  struct pbuf *send_lastdata;
++  uint16_t send_datalen;
+   volatile uint32_t events __rte_cache_aligned; /* available events */
+   struct pbuf *recv_lastdata __rte_cache_aligned; /* unread data in one pbuf */
+   struct list_node recv_list __rte_cache_aligned;
+   struct list_node event_list __rte_cache_aligned;
+   struct list_node send_list __rte_cache_aligned;
+   uint32_t in_send __rte_cache_aligned; /* avoid sock too much send rpc msg*/
+-  uint32_t send_flag __rte_cache_aligned; /* avoid sock too much send rpc msg*/
+   uint32_t epoll_events; /* registered events, EPOLLONESHOT write frequently */
+   char pad __rte_cache_aligned;
+ 
+@@ -124,38 +125,12 @@ struct lwip_sock {
+ #if USE_LIBOS
+ extern uint32_t sockets_num;
+ extern struct lwip_sock *sockets;
+-/**
+- * Map a externally used socket index to the internal socket representation.
+- *
+- * @param s externally used socket index
+- * @return struct lwip_sock for the socket or NULL if not found
+- */
+-static inline struct lwip_sock *
+-get_socket_without_errno(int s)
+-{
+-  struct lwip_sock *sock = NULL;
+-
+-  s -= LWIP_SOCKET_OFFSET;
+-
+-  if ((s < 0) || (s >= sockets_num)) {
+-    LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): invalid\n", s + LWIP_SOCKET_OFFSET));
+-    return NULL;
+-  }
+-
+-  sock = &sockets[s];
+-
+-  if (!sock->conn) {
+-    LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): not active\n", s + LWIP_SOCKET_OFFSET));
+-    return NULL;
+-  }
+-
+-  return sock;
+-}
+-
++extern void gazelle_connected_callback(struct netconn *conn);
+ extern void add_recv_list(int32_t fd);
+ extern ssize_t read_lwip_data(struct lwip_sock *sock, int32_t flags, u8_t apiflags);
+ extern struct pbuf *write_lwip_data(struct lwip_sock *sock, uint16_t remain_size, uint8_t *apiflags);
+ extern void gazelle_init_sock(int32_t fd);
++extern void write_lwip_over(struct lwip_sock *sock, uint32_t n);
+ #endif /* USE_LIBOS */
+ 
+ struct lwip_sock *get_socket(int s);
+-- 
+2.27.0
+
diff --git a/lwip.spec b/lwip.spec
index dd72c372aaaba1a761879f843831138893537b91..5cddeb89261588deb9726aa459c8c22155044ec6 100644
--- a/lwip.spec
+++ b/lwip.spec
@@ -4,7 +4,7 @@
 Summary: lwip is a small independent implementation of the TCP/IP protocol suite
 Name:    lwip
 Version: 2.1.3
-Release: 16
+Release: 17
 License: BSD
 URL:     http://savannah.nongnu.org/projects/lwip/
 Source0: http://download.savannah.nongnu.org/releases/lwip/%{name}-%{version}.tar.gz
@@ -40,6 +40,7 @@ Patch9024:  0025-Replace-gettid-with-syscall-SYS_gettid.patch
 Patch9025:  0026-del-redundant-wait_close-and-move-epoll_events-pos.patch
 Patch9026:  0027-modify-EISCONN-condition.patch
 Patch9027:  0028-per-thread-reassdata-variables.patch
+Patch9028:  0029-fix-EISCONN-err-and-remove-same-customized-modificat.patch
 
 BuildRequires: gcc-c++ dos2unix dpdk-devel
 
@@ -68,6 +69,10 @@ cd %{_builddir}/%{name}-%{version}/src
 %{_libdir}/liblwip.a
 
 %changelog
+* Thu Oct 6 2022 wuchangsheng<wuchangsheng2@huawei.com> - 2.1.3-17
+- fix EISCONN conditon err
+  remove same customized modification
+
 * Thu Oct 6 2022 wuchangsheng<wuchangsheng2@huawei.com> - 2.1.3-16
 - per thread reassdata variables