Ticket #3757 (new defect) — at Initial Version

Opened 9 years ago

Last modified 7 years ago

tftp failure in VirtualBox

Reported by: kohsuke Owned by:
Priority: major Component: network
Version: VirtualBox 2.1.2 Keywords:
Cc: Guest type: other
Host type: other


There appears to be a bug in the TFTP implementation of the PXE boot of VirtualBox. The packet capture from Wireshark is attached.

As you can see in the packet capture, TFTP transmission of a file starts off fine, but somehow VirtualBox fails to recognize the data packet 67 that the TFTP server is sending.

It keeps ACKing 66 to request a re-transmission of 67, which the TFTP server does. Eventually, both parties time out and the TFTP fails.

The error reproduces often, but not always. It's not always this packet 67, either. It more or less happens at random points, but the probability of the issue is high enough that if I attempt a Linux kernel boot via pxelinux, it'll almost always fail before the linux kernel image and initrd is loaded.

Change History

Changed 9 years ago by kohsuke

Wireshark packet capture that shows communication between TFTP server and VirtualBox

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