diff --git a/cpu/stm32w108/Makefile.stm32w108 b/cpu/stm32w108/Makefile.stm32w108
index c408f7c16..8c12ab882 100644
--- a/cpu/stm32w108/Makefile.stm32w108
+++ b/cpu/stm32w108/Makefile.stm32w108
@@ -23,7 +23,7 @@ CONTIKI_CPU_DIRS = . dev hal simplemac hal/micro/cortexm3 hal/micro/cortexm3/stm
 
 STM32W_C = leds-arch.c leds.c clock.c watchdog.c uart1.c uart1-putchar.c slip_uart1.c slip.c\
 		stm32w-radio.c stm32w_systick.c uip_arch.c rtimer-arch.c adc.c micro.c sleep.c \
-		micro-common.c micro-common-internal.c clocks.c mfg-token.c nvm.c flash.c rand.c system-timer.c mpu.c
+		micro-common.c micro-common-internal.c clocks.c mfg-token.c nvm.c flash.c rand.c system-timer.c
 
 STM32W_S = spmr.s79 context-switch.s79 
 
@@ -297,3 +297,12 @@ else
 login:
 	$(SERIALDUMP) -b115200 -d10000 $(USBDEVPREFIX)$(firstword $(MOTES))
 endif
+
+# a target that gives a user-friendly memory profile, taking into account the RAM
+# that is statically occupied by the stack as defined in cpu/stm32w108/gnu.ld
+RAM_SIZE = 8192
+FLASH_SIZE = 128*1024
+STACK_SIZE = 1280
+%.size: %.$(TARGET)
+	@size -A $< | egrep "data|bss" | awk '{s+=$$2} END {s=s+$(STACK_SIZE); f=$(RAM_SIZE)-s; printf "[RAM]   used %6d, free %6d\n",s,f;}'
+	@size -A $< | egrep "text|isr_vector" | awk '{s+=$$2} END {f=$(FLASH_SIZE)-s; printf "[Flash] used %6d, free %6d\n",s,f;}'
diff --git a/platform/mb851/contiki-conf.h b/platform/mb851/contiki-conf.h
index 902d8dbe5..0450fbfb6 100644
--- a/platform/mb851/contiki-conf.h
+++ b/platform/mb851/contiki-conf.h
@@ -129,11 +129,16 @@
 #define UIP_CONF_MAX_LISTENPORTS		            8
 #define UIP_CONF_UDP_CONNS			                4
 
-#include "net/sicslowpan.h"
-#define SICSLOWPAN_CONF_COMPRESSION             SICSLOWPAN_CONF_COMPRESSION_HC06
+#define SICSLOWPAN_CONF_COMPRESSION             SICSLOWPAN_COMPRESSION_HC06
+#ifndef SICSLOWPAN_CONF_FRAG
 #define SICSLOWPAN_CONF_FRAG                    1
+#endif /* SICSLOWPAN_CONF_FRAG */
+#ifndef SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS
 #define SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS       2
+#endif /* SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS */
+#ifndef SICSLOWPAN_CONF_MAXAGE
 #define SICSLOWPAN_CONF_MAXAGE                  2
+#endif /* SICSLOWPAN_CONF_MAXAGE */
 
 #else /* WITH_UIP6 */
 
diff --git a/platform/mb851/contiki-main.c b/platform/mb851/contiki-main.c
index ee09e2c91..fce0c640b 100644
--- a/platform/mb851/contiki-main.c
+++ b/platform/mb851/contiki-main.c
@@ -68,6 +68,9 @@
 #include "net/rime/rime-udp.h"
 #include "net/uip.h"
 
+#if WITH_UIP6
+#include "net/uip-ds6.h"
+#endif /* WITH_UIP6 */
 
 #define DEBUG 1
 #if DEBUG
@@ -100,8 +103,6 @@ set_rime_addr(void)
     uint8_t u8[8];
   }eui64;
   
-  //rimeaddr_t lladdr;
-  
   int8u *stm32w_eui64 = ST_RadioGetEui64();
   {
           int8u c;
@@ -186,6 +187,32 @@ main(void)
   
   autostart_start(autostart_processes);
   
+  printf("Tentative link-local IPv6 address ");
+  {
+    uip_ds6_addr_t *lladdr;
+    int i;
+    lladdr = uip_ds6_get_link_local(-1);
+    for(i = 0; i < 7; ++i) {
+      printf("%02x%02x:", lladdr->ipaddr.u8[i * 2],
+             lladdr->ipaddr.u8[i * 2 + 1]);
+    }
+    printf("%02x%02x\n", lladdr->ipaddr.u8[14], lladdr->ipaddr.u8[15]);
+  }
+
+  if(!UIP_CONF_IPV6_RPL) {
+    uip_ipaddr_t ipaddr;
+    int i;
+    uip_ip6addr(&ipaddr, 0xaaaa, 0, 0, 0, 0, 0, 0, 0);
+    uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
+    uip_ds6_addr_add(&ipaddr, 0, ADDR_TENTATIVE);
+    printf("Tentative global IPv6 address ");
+    for(i = 0; i < 7; ++i) {
+      printf("%02x%02x:",
+             ipaddr.u8[i * 2], ipaddr.u8[i * 2 + 1]);
+    }
+    printf("%02x%02x\n",
+           ipaddr.u8[7 * 2], ipaddr.u8[7 * 2 + 1]);
+  }
   
   watchdog_start();
   
@@ -262,11 +289,11 @@ void UsageFault_Handler(){
   errcode = 7; 
   //leds_on(LEDS_RED);
   //halReboot();
-}*/
+}
 
 void Default_Handler() 
 { 
   //errcode = 8; 
   leds_on(LEDS_RED);
   halReboot();
-}
+}*/