Index: /trunk/src/VBox/Main/src-server/NATNetworkImpl.cpp
===================================================================
--- /trunk/src/VBox/Main/src-server/NATNetworkImpl.cpp	(revision 49613)
+++ /trunk/src/VBox/Main/src-server/NATNetworkImpl.cpp	(revision 49614)
@@ -870,5 +870,4 @@
     if (!m->fEnabled) return S_OK;
 
-    m->NATRunner.setOption(NetworkServiceRunner::kNsrKeyNeedMain, "on");
     m->NATRunner.setOption(NetworkServiceRunner::kNsrKeyNetwork, Utf8Str(mName).c_str());
     m->NATRunner.setOption(NetworkServiceRunner::kNsrKeyTrunkType, Utf8Str(aTrunkType).c_str());