Index: /trunk/src/VBox/Devices/Network/SrvIntNetR0.cpp
===================================================================
--- /trunk/src/VBox/Devices/Network/SrvIntNetR0.cpp	(revision 52543)
+++ /trunk/src/VBox/Devices/Network/SrvIntNetR0.cpp	(revision 52544)
@@ -2835,5 +2835,5 @@
         return;
 
-    size_t hdrlen = 0;
+    uint32_t hdrlen = 0;
     uint8_t llaopt = RTNETIPV6_ICMP_ND_SLLA_OPT;
 
@@ -2876,5 +2876,5 @@
     {
         uint8_t opt = ((uint8_t *)pOpt)[0];
-        size_t optlen = (size_t)((uint8_t *)pOpt)[1] * 8;
+        uint32_t optlen = (uint32_t)((uint8_t *)pOpt)[1] * 8;
         if (RT_UNLIKELY(cb < optlen))
             return;