id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
5871	Internal networks stop passing traffic	Matt Kassawara		"I'm attempting to simulate a dynamically routed network environment by running Quagga on several minimal Ubuntu 9.10 64-bit Linux guests hosted on MacOS X 10.5.8.  Each guest uses a handful of internal networks to simulate point-to-point links between routers and to provide connectivity for clients which generate traffic on stub networks.  Shortly after the guests boot up and routing converges, the internal networks either become incredibly sluggish or completely fail to pass traffic.  Running ""ping"" between guests shows considerable packet loss and ""tcpdump"" on each side shows packets egressing but few, if any, returning from the remote end.  Sometimes I'll see ""bursts"" of packets, but in general very few successfully complete the round trip in a reasonable time.  Strangely, keeping the internal network links busy after the guests boot up with something like a 1-second interval ping maintains connectivity.  However, the internal networks will stop passing traffic shortly after terminating the ping.  None of the guest log files show any problems.  I'm also experiencing this issue with guests not associated with this particular project, but running under the same instance of VirtualBox."	defect	closed	network	VirtualBox 3.1.2	fixed	internal network stop hang		Linux	Mac OS X