Ticket #4626 (new defect)

Opened 9 years ago

PPPoE fails over bridged HP8510w 4965AG WLAN card

Reported by: Kinnoken Owned by:
Priority: major Component: network
Version: VirtualBox 3.0.2 Keywords: PPPoE DSL HP8510w 4965
Cc: Guest type: Windows
Host type: Windows


I have a problem where I have a host machine, an HP8510w laptop with an intel 4965AG WLAN card. I am running Vista 64 Ultimate (same problem with Win 7 64 RTM) with a guest machine running Windows XP Sp3. The most important aspects of this setup is that the guest machine is set to be bridged to my WLAN card (Intel 4965AG). I am using static IP's with a router.

After the Guest OS is installed, I have configured an IP address. I can ping the router from the Host OS and I can also ping the router from the Guest OS. All other aspects of networking seem to be working. (I do not use DHCP purely because of my network setup but I feel this is unimportant).

I have several PPPoE accounts and a router that is in bridge mode. When I try to initiate a PPPoE connection in the Guest OS (WinXP), PADI packets leave the guest machine, go through the bridged network, reach the router. The router then sends a PADO response which can be seen on the Host OS and is also passed on to the Guest OS.

Unfortunately, the Guest OS is ignoring these packets as the target MAC address does not seem to be for the Guest OS (Which is understandable, but surely the bridging driver/service installed on the Host OS NIC is supposed to correct this?)

This seems to be a problem with the bridging driver/service for VirtualBox. This may not be of any concern to you, but the problem also exists in VMware Workstation. This is not a problem for Microsoft Virtual Machine though.

I have discovered a slight workaround. If I set the MAC address of the virtual network card in the guest to the same MAC address of the Host OS WLAN card, the PADO packets are relayed and it now works. Unfortunately, this causes other problems with Linux Guest's trying to use the same workaround and I cannot use this solution permanently.

I have attached the Vbox.log, as well as two wireshark captures from both the host and the guest machine.


VBox.log Download (79.0 KB) - added by Kinnoken 9 years ago.
VirtualBox log as requested
Host-os-pppoe-win64.txt Download (114.5 KB) - added by Kinnoken 9 years ago.
Wireshark packet capture from host machine
Guest-os-pppoe-winxp.txt Download (104.5 KB) - added by Kinnoken 9 years ago.
Guest OS packet capture

Change History

Changed 9 years ago by Kinnoken

VirtualBox log as requested

Changed 9 years ago by Kinnoken

Wireshark packet capture from host machine

Changed 9 years ago by Kinnoken

Guest OS packet capture

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