id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	guest	host
4150	VirtualBox Networking does not pass DCE RPC BIND packets with OS X host	fm2503		Host: OS X 10.5.7 Guest: Vista 32 bit, SP1. Outlook 2007 SP2 (Also happens with Win7) Networking: Bridged to wired ethernet (also happens with NAT)\r\n\r\nWindows Vista/Win7 guests are unable to connect to Exchange 2003 using MAPI. The DCE RPC BIND packet sent from the guest never leaves the host. Attached screen shots show wireshark captures from the guest and the host.\r\n\r\nPacket 744 (the last one in the guest trace), never appears in the host trace. This happens regardless of the type of NIC emulated in the guest (Intel and PCnet-FAST III) tested.\r\n\r\nThe X.X.67.255 box is the Vista guest client and the X.X.55.71 box is the Exchange server. The .255 is valid as an ip address for the client as a large netmask is being used.\r\n\r\nThis prevents outlook from communicating with Exchange.\r\n\r\nAll firewalls on host and guest disabled.\r\n\r\nPresent since at least 2.1.2 on OS X	defect	new	major	network/NAT	VirtualBox 3.0.4		outlook exchange		Windows	Mac OS X