From c092f9b881562d7c065118bdc09467ff8bbc9ded Mon Sep 17 00:00:00 2001
From: xueyunfei <xueyunfei@espressif.com>
Date: Thu, 19 Mar 2020 14:14:13 +0800
Subject: [PATCH] bugfix for TCPv6 send ok when sta disconnect

---
 components/esp_netif/lwip/esp_netif_lwip.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/components/esp_netif/lwip/esp_netif_lwip.c b/components/esp_netif/lwip/esp_netif_lwip.c
index 195ddd3ffa..a96a92a1cb 100644
--- a/components/esp_netif/lwip/esp_netif_lwip.c
+++ b/components/esp_netif/lwip/esp_netif_lwip.c
@@ -1086,6 +1086,9 @@ static esp_err_t esp_netif_down_api(esp_netif_api_msg_t *msg)
         esp_netif_reset_ip_info(esp_netif);
     }
 
+    for(int8_t i = 0 ;i < LWIP_IPV6_NUM_ADDRESSES ;i++) {
+        netif_ip6_addr_set(lwip_netif, i, IP6_ADDR_ANY6);
+    }
     netif_set_addr(lwip_netif, IP4_ADDR_ANY4, IP4_ADDR_ANY4, IP4_ADDR_ANY4);
     netif_set_down(lwip_netif);