Index: /trunk/src/VBox/HostDrivers/VBoxNetFlt/win/drv/VBoxNetLwf-win.cpp
===================================================================
--- /trunk/src/VBox/HostDrivers/VBoxNetFlt/win/drv/VBoxNetLwf-win.cpp	(revision 56484)
+++ /trunk/src/VBox/HostDrivers/VBoxNetFlt/win/drv/VBoxNetLwf-win.cpp	(revision 56485)
@@ -66,4 +66,5 @@
 #  include <ndis.h>
 #endif
+#include <mstcpip.h>
 RT_C_DECLS_END
 
@@ -2183,4 +2184,10 @@
 }
 
+/*
+ * Uncommenting the following line produces debug log messages on IP address changes,
+ * including wired interfaces. No actual calls to a switch port are made. This is for
+ * debug purposes only!
+ * #define VBOXNETLWFWIN_DEBUGIPADDRNOTIF 1
+ */
 static void vboxNetLwfWinIpAddrChangeCallback(IN PVOID pvCtx,
                                               IN PMIB_UNICASTIPADDRESS_ROW pRow,
@@ -2199,21 +2206,44 @@
         return;
 
-    if (pRow && pThis->pSwitchPort->pfnNotifyHostAddress)
+    if (   pRow
+#ifndef VBOXNETLWFWIN_DEBUGIPADDRNOTIF
+        && pThis->pSwitchPort->pfnNotifyHostAddress
+#endif /* !VBOXNETLWFWIN_DEBUGIPADDRNOTIF */
+       )
     {
         switch (pRow->Address.si_family)
         {
             case AF_INET:
+                if (   IN4_IS_ADDR_LINKLOCAL(&pRow->Address.Ipv4.sin_addr)
+                    || pRow->Address.Ipv4.sin_addr.s_addr == IN4ADDR_LOOPBACK)
+                {
+                    Log(("vboxNetLwfWinIpAddrChangeCallback: ignoring %s address (%RTnaipv4)\n",
+                         pRow->Address.Ipv4.sin_addr.s_addr == IN4ADDR_LOOPBACK ? "loopback" : "link-local",
+                         pRow->Address.Ipv4.sin_addr));
+                    break;
+                }
                 Log(("vboxNetLwfWinIpAddrChangeCallback: %s IPv4 addr=%RTnaipv4 on luid=(%u,%u)\n",
                      fAdded ? "add" : "remove", pRow->Address.Ipv4.sin_addr,
                      pRow->InterfaceLuid.Info.IfType, pRow->InterfaceLuid.Info.NetLuidIndex));
+#ifndef VBOXNETLWFWIN_DEBUGIPADDRNOTIF
                 pThis->pSwitchPort->pfnNotifyHostAddress(pThis->pSwitchPort, fAdded, kIntNetAddrType_IPv4,
                                                          &pRow->Address.Ipv4.sin_addr);
+#endif /* !VBOXNETLWFWIN_DEBUGIPADDRNOTIF */
                 break;
             case AF_INET6:
-                Log(("vboxNetLwfWinIpAddrChangeCallback: %s IPv6 addr=%RTnaipv6 luid=(%u,%u)\n",
+                if (Ipv6AddressScope(pRow->Address.Ipv6.sin6_addr.u.Byte) <= ScopeLevelLink)
+                {
+                    Log(("vboxNetLwfWinIpAddrChangeCallback: ignoring link-local address (%RTnaipv6)\n",
+                         &pRow->Address.Ipv6.sin6_addr));
+                    break;
+                }
+                Log(("vboxNetLwfWinIpAddrChangeCallback: %s IPv6 addr=%RTnaipv6 scope=%d luid=(%u,%u)\n",
                      fAdded ? "add" : "remove", &pRow->Address.Ipv6.sin6_addr,
+                     Ipv6AddressScope(pRow->Address.Ipv6.sin6_addr.u.Byte),
                      pRow->InterfaceLuid.Info.IfType, pRow->InterfaceLuid.Info.NetLuidIndex));
+#ifndef VBOXNETLWFWIN_DEBUGIPADDRNOTIF
                 pThis->pSwitchPort->pfnNotifyHostAddress(pThis->pSwitchPort, fAdded, kIntNetAddrType_IPv6,
                                                          &pRow->Address.Ipv6.sin6_addr);
+#endif /* !VBOXNETLWFWIN_DEBUGIPADDRNOTIF */
                 break;
         }
@@ -2226,5 +2256,10 @@
 void vboxNetLwfWinRegisterIpAddrNotifier(PVBOXNETFLTINS pThis)
 {
-    if (pThis->pSwitchPort && pThis->pSwitchPort->pfnNotifyHostAddress)
+    LogFlow(("==>vboxNetLwfWinRegisterIpAddrNotifier: instance=%p\n", pThis));
+    if (   pThis->pSwitchPort
+#ifndef VBOXNETLWFWIN_DEBUGIPADDRNOTIF
+        && pThis->pSwitchPort->pfnNotifyHostAddress
+#endif /* !VBOXNETLWFWIN_DEBUGIPADDRNOTIF */
+       )
     {
         NETIO_STATUS Status;
@@ -2249,4 +2284,5 @@
     else
         pThis->u.s.WinIf.hNotifier = NULL;
+    LogFlow(("<==vboxNetLwfWinRegisterIpAddrNotifier\n"));
 }