Index: /trunk/src/VBox/Runtime/common/string/RTStrIPv6.cpp
===================================================================
--- /trunk/src/VBox/Runtime/common/string/RTStrIPv6.cpp	(revision 43219)
+++ /trunk/src/VBox/Runtime/common/string/RTStrIPv6.cpp	(revision 43220)
@@ -1221,5 +1221,5 @@
 RTDECL(bool) RTNetIsIPv6AddrStr(const char *pszAddress)
 {
-    return rtNetIpv6CheckAddrStr(pszAddress, NULL, 0, true, true);
+    return rtNetIpv6CheckAddrStr(pszAddress, NULL, 0, true, true) >= 0;
 }
 RT_EXPORT_SYMBOL(RTNetIsIPv6AddrStr);