Index: /trunk/src/VBox/Devices/Network/slirp/tcp_input.c
===================================================================
--- /trunk/src/VBox/Devices/Network/slirp/tcp_input.c	(revision 19800)
+++ /trunk/src/VBox/Devices/Network/slirp/tcp_input.c	(revision 19801)
@@ -296,6 +296,8 @@
 #ifdef VBOX_WITH_NAT_SERVICE
         {
+            struct ethhdr *eh;
+
             Assert(m);
-            struct ethhdr *eh = (struct ethhdr *)m->m_dat;
+            eh = (struct ethhdr *)m->m_dat;
             memcpy(so->so_ethaddr, eh->h_source, ETH_ALEN);
         }