From b938154f6b3972f89d7b229605816a690b704979 Mon Sep 17 00:00:00 2001
From: Ivan Delamer <delamer@inicotech.com>
Date: Thu, 19 Feb 2015 16:22:19 -0700
Subject: [PATCH] Removed unused netif flag for DHCP

---
 CHANGELOG                | 4 ++++
 src/core/dhcp.c          | 9 ---------
 src/include/lwip/netif.h | 3 ---
 3 files changed, 4 insertions(+), 12 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index 9cef025a..151d49fc 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -6,6 +6,10 @@ HISTORY
 
   ++ New features:
 
+  2015-02-19: Ivan Delamer
+  * netif.h, dhcp.c: Removed unused netif flag for DHCP. The preferred way to evaluate
+    if DHCP is active is through netif->dhcp field.
+
   2015-02-19: Ivan Delamer
   * netif.h, slipif.c, ppp.c: Removed unused netif flag for point to point connections
 
diff --git a/src/core/dhcp.c b/src/core/dhcp.c
index aafe6fe3..8e676db0 100644
--- a/src/core/dhcp.c
+++ b/src/core/dhcp.c
@@ -678,10 +678,6 @@ dhcp_start(struct netif *netif)
     return ERR_MEM;
   }
 
-  /* Remove the flag that says this netif is handled by DHCP,
-     it is set when we succeeded starting. */
-  netif->flags &= ~NETIF_FLAG_DHCP;
-
   /* no DHCP client attached yet? */
   if (dhcp == NULL) {
     LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_start(): starting new DHCP client\n"));
@@ -724,7 +720,6 @@ dhcp_start(struct netif *netif)
   if (!netif_is_link_up(netif)) {
     /* set state INIT and wait for dhcp_network_changed() to call dhcp_discover() */
     dhcp_set_state(dhcp, DHCP_INIT);
-    netif->flags |= NETIF_FLAG_DHCP;
     return ERR_OK;
   }
 #endif /* LWIP_DHCP_CHECK_LINK_UP */
@@ -736,8 +731,6 @@ dhcp_start(struct netif *netif)
     dhcp_stop(netif);
     return ERR_MEM;
   }
-  /* Set the flag that says this netif is handled by DHCP. */
-  netif->flags |= NETIF_FLAG_DHCP;
   return result;
 }
 
@@ -1268,8 +1261,6 @@ dhcp_stop(struct netif *netif)
   struct dhcp *dhcp;
   LWIP_ERROR("dhcp_stop: netif != NULL", (netif != NULL), return;);
   dhcp = netif->dhcp;
-  /* Remove the flag that says this netif is handled by DHCP. */
-  netif->flags &= ~NETIF_FLAG_DHCP;
 
   LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_stop()\n"));
   /* netif is DHCP configured? */
diff --git a/src/include/lwip/netif.h b/src/include/lwip/netif.h
index abd8af9e..6a9ffeb7 100644
--- a/src/include/lwip/netif.h
+++ b/src/include/lwip/netif.h
@@ -77,9 +77,6 @@ extern "C" {
 /** If set, the netif has broadcast capability.
  * Set by the netif driver in its init function. */
 #define NETIF_FLAG_BROADCAST    0x02U
-/** If set, the interface is configured using DHCP.
- * Set by the DHCP code when starting or stopping DHCP. */
-#define NETIF_FLAG_DHCP         0x08U
 /** If set, the interface has an active link
  *  (set by the network interface driver).
  * Either set by the netif driver in its init function (if the link