From 42474815cf818834479a2bded99e707aabd67e23 Mon Sep 17 00:00:00 2001
From: xueyunfei <xueyunfei@espressif.com>
Date: Tue, 27 Oct 2020 10:20:04 +0800
Subject: [PATCH] udpv6 failed to receive data for the first time for 3.1

---
 components/lwip/core/ipv6/nd6.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/lwip/core/ipv6/nd6.c b/components/lwip/core/ipv6/nd6.c
index 893f73eb52..2bd6e08a31 100644
--- a/components/lwip/core/ipv6/nd6.c
+++ b/components/lwip/core/ipv6/nd6.c
@@ -1655,13 +1655,13 @@ nd6_queue_packet(s8_t neighbor_index, struct pbuf * q)
 #endif /* LWIP_ND6_QUEUEING */
       p = pbuf_alloc(PBUF_LINK, q->tot_len, PBUF_RAM);
     }
+#endif /* ESP_ND6_QUEUEING */
     if (p != NULL) {
       if (pbuf_copy(p, q) != ERR_OK) {
         pbuf_free(p);
         p = NULL;
       }
     }
-#endif
   } else {
     /* referencing the old pbuf is enough */
     p = q;