From 88858f216cf2939ce3d8239c2f6cdcd16758952a Mon Sep 17 00:00:00 2001
From: David Lin <linpeng1577@gmail.com>
Date: Sat, 21 Nov 2020 12:44:14 +0800
Subject: [PATCH] Update ethernetif.c

---
 components/net/lwip-1.4.1/src/netif/ethernetif.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/components/net/lwip-1.4.1/src/netif/ethernetif.c b/components/net/lwip-1.4.1/src/netif/ethernetif.c
index d31ea813bc..f2570f9e2b 100644
--- a/components/net/lwip-1.4.1/src/netif/ethernetif.c
+++ b/components/net/lwip-1.4.1/src/netif/ethernetif.c
@@ -156,6 +156,16 @@ static int lwip_netdev_set_dns_server(struct netdev *netif, uint8_t dns_num, ip_
 static int lwip_netdev_set_dhcp(struct netdev *netif, rt_bool_t is_enabled)
 {
     netdev_low_level_set_dhcp_status(netif, is_enabled);
+	
+    if(RT_TRUE == is_enabled)
+    {
+        dhcp_start((struct netif *)netif->user_data);
+    }
+    else
+    {
+        dhcp_stop((struct netif *)netif->user_data);    
+    }
+	
     return ERR_OK;
 }
 #endif /* RT_LWIP_DHCP */