From 9b4be1bb968eb51c0bbe1d178da9a83cc9c343bb Mon Sep 17 00:00:00 2001
From: fbernon <fbernon>
Date: Sun, 6 Jan 2008 23:18:50 +0000
Subject: [PATCH] Win32 port: add a dhcp_renew when the link become "up"...

---
 ports/win32/test.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/ports/win32/test.c b/ports/win32/test.c
index beec81f..5fdffda 100644
--- a/ports/win32/test.c
+++ b/ports/win32/test.c
@@ -234,7 +234,16 @@ void status_callback(struct netif *netif)
 
 #if LWIP_NETIF_LINK_CALLBACK
 void link_callback(struct netif *netif)
-{ printf("link_callback==%s\n", netif_is_link_up(netif)?"UP":"DOWN");
+{ if (netif_is_link_up(netif)) {
+    printf("link_callback==UP\n");
+#if LWIP_DHCP
+    if (netif->dhcp != NULL) {
+      dhcp_renew(netif);
+    }
+#endif /* LWIP_DHCP */
+  } else {
+    printf("link_callback==DOWN\n");
+  }
 }
 #endif /* LWIP_NETIF_LINK_CALLBACK */