diff --git a/platform/netsim/contiki-conf.h b/platform/netsim/contiki-conf.h
index 72c5913b0..90c5a90fa 100644
--- a/platform/netsim/contiki-conf.h
+++ b/platform/netsim/contiki-conf.h
@@ -35,7 +35,7 @@
  *
  * This file is part of the Contiki desktop OS
  *
- * $Id: contiki-conf.h,v 1.8 2008/01/24 23:09:40 adamdunkels Exp $
+ * $Id: contiki-conf.h,v 1.9 2008/03/03 20:21:59 adamdunkels Exp $
  *
  */
 
@@ -110,6 +110,8 @@ typedef unsigned long clock_time_t;
 #define RIMEBUF_CONF_SIZE        128
 #define RIMEBUF_CONF_HDR_SIZE    32
 
+#define UIP_CONF_UIP_IP4ADDR_T_WITH_U32 1
+
 #define UIP_CONF_ICMP_DEST_UNREACH 1
 
 #define UIP_CONF_MAX_CONNECTIONS 40
diff --git a/platform/netsim/contiki-main.c b/platform/netsim/contiki-main.c
index ae15df5ea..b445d4f31 100644
--- a/platform/netsim/contiki-main.c
+++ b/platform/netsim/contiki-main.c
@@ -30,7 +30,7 @@
  *
  * Author: Adam Dunkels <adam@sics.se>
  *
- * $Id: contiki-main.c,v 1.28 2008/02/10 22:38:21 oliverschmidt Exp $
+ * $Id: contiki-main.c,v 1.29 2008/03/03 20:21:59 adamdunkels Exp $
  */
 
 #include "contiki.h"
@@ -137,11 +137,14 @@ contiki_main(int flag)
       process_start(&wpcap_process, NULL);
       {
 	char buf[1024];
+	uip_ipaddr_t ifaddr;
+	
+	ifaddr.u32[0] = inet_addr(__argv[1]);
 	
 	snprintf(buf, sizeof(buf), "route add %d.%d.%d.%d mask %d.%d.%d.%d %d.%d.%d.%d",
 		 uip_ipaddr_to_quad(&meshif.ipaddr),
 		 uip_ipaddr_to_quad(&meshif.netmask),
-		 uip_ipaddr_to_quad(&uip_hostaddr));
+		 uip_ipaddr_to_quad(&ifaddr));
 	printf("%s\n", buf);
 	system(buf);
 	signal(SIGTERM, remove_route);