Opened 15 years ago
Last modified 13 years ago
#3757 closed defect
tftp failure in VirtualBox — at Initial Version
| Reported by: | Kohsuke Kawaguchi | Owned by: | |
|---|---|---|---|
| Component: | network | Version: | VirtualBox 2.1.2 |
| Keywords: | Cc: | ||
| Guest type: | other | Host type: | other |
Description
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.
Wireshark packet capture that shows communication between TFTP server and VirtualBox