diff --git a/src/core/ipv4/autoip.c b/src/core/ipv4/autoip.c
index 7e6e949c..a1676be0 100644
--- a/src/core/ipv4/autoip.c
+++ b/src/core/ipv4/autoip.c
@@ -302,7 +302,7 @@ autoip_start(struct netif *netif)
     /* no AutoIP client attached yet? */
     LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE,
       ("autoip_start(): starting new AUTOIP client\n"));
-    autoip = mem_malloc(sizeof(struct autoip));
+    autoip = (struct autoip *)mem_malloc(sizeof(struct autoip));
     if(autoip == NULL) {
       LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE,
         ("autoip_start(): could not allocate autoip\n"));
@@ -334,6 +334,10 @@ autoip_start_probing(struct netif *netif)
 
   autoip->state = AUTOIP_STATE_PROBING;
   autoip->sent_num = 0;
+  LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE,
+     ("autoip_start_probing(): changing state to PROBING: %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
+      ip4_addr1_16(&netif->autoip->llipaddr), ip4_addr2_16(&netif->autoip->llipaddr),
+      ip4_addr3_16(&netif->autoip->llipaddr), ip4_addr4_16(&netif->autoip->llipaddr)));
 
   /* time to wait to first probe, this is randomly
    * choosen out of 0 to PROBE_WAIT seconds.
@@ -407,6 +411,10 @@ autoip_tmr()
               netif->autoip->state = AUTOIP_STATE_ANNOUNCING;
               netif->autoip->sent_num = 0;
               netif->autoip->ttw = ANNOUNCE_WAIT * AUTOIP_TICKS_PER_SECOND;
+              LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE,
+                 ("autoip_tmr(): changing state to ANNOUNCING: %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
+                  ip4_addr1_16(&netif->autoip->llipaddr), ip4_addr2_16(&netif->autoip->llipaddr),
+                  ip4_addr3_16(&netif->autoip->llipaddr), ip4_addr4_16(&netif->autoip->llipaddr)));
             } else {
               autoip_arp_probe(netif);
               LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE,
@@ -444,6 +452,10 @@ autoip_tmr()
                 netif->autoip->state = AUTOIP_STATE_BOUND;
                 netif->autoip->sent_num = 0;
                 netif->autoip->ttw = 0;
+                 LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE,
+                    ("autoip_tmr(): changing state to BOUND: %"U16_F".%"U16_F".%"U16_F".%"U16_F"\n",
+                     ip4_addr1_16(&netif->autoip->llipaddr), ip4_addr2_16(&netif->autoip->llipaddr),
+                     ip4_addr3_16(&netif->autoip->llipaddr), ip4_addr4_16(&netif->autoip->llipaddr)));
             }
           }
           break;