I have disabled the firewall on the host completely; not tested changing it on the client yet.
I did have a go with wireshark on the host though, and the traces show that when the "switchover" happens between host and guest, an ARP reply telling where to find the ping target is received. On the whole, there was clearly more ARP requests in flight than I would think necessary; it was as if the caches were flushed with intervals of only 10-30 seconds! Then again, when the guest was not running, everything was normal again. I do not know if this is a "chicken" or "egg" situation so to speak, i.e. if the ARP traffic was due to the interfaces constantly thinking that they lose their connections or if there is some form of ARP contention going on that causes the interfaces to get confused. -----Original Message----- From: Daniel L. Miller [mailto:[email protected]] Sent: Friday, September 16, 2011 9:18 PM To: [email protected] Subject: Re: [VBox-users] Host and guest competing for bridged network On 9/15/2011 5:15 AM, Fredrik Bengtsson wrote: > I'm running a Windows Server 2008 R2 guest under Windows 7 64-bit with > VirtualBox 4.1.2. Network is set to bridged, using my computer's wifi > connection (Centrino Advanced-N 6205). Virtualization extensions are > enabled in host BIOS. > > When the guest is turned off, all traffic from the host to other > machines works fine and always has. > > When the guest is running, the host and guest seem to "compete" > for traffic. If I start a cmd window in both host and guest and start > an identical infinite "ping /t<othermachine>" in them, it is perfectly > clear that first the host is able to ping fine but the guest > consistently gets "Request timed out", and 30 seconds later the host > starts getting "Request timed out" but the guest starts to get the > packets flowing. And then they switch back like 20 seconds later, and > so on and so forth. At no time are they able to transmit at the same > time. The time between switches seem to be completely random, but > fairly short (less than a minute on average). > > Any ideas what may be causing this? It's infuriating, since this keeps > killing remote desktop connections to the guest which we are relying > for in a current project. > > Thanks, > /Fredrik Is there any firewall running on either guest or host? -- Daniel ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA http://p.sf.net/sfu/rim-devcon-copy2 _______________________________________________ VBox-users-community mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/vbox-users-community ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA http://p.sf.net/sfu/rim-devcon-copy2 _______________________________________________ VBox-users-community mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/vbox-users-community
