[syslinux] syslinux.efi [PXELINUX EFI 64 boot] not properly TFTP'ing ldlinux.e64

H. Peter Anvin hpa at zytor.com
Fri Mar 14 08:53:20 PDT 2014

On 03/10/2014 08:00 PM, Spike White wrote:
> What seems to confuse it is that it gets back both acknowledgements in the
> same TFTP option acknowledgement packet.  That is, the TFTP server's option
> acknowledgement packet has tsize option acknowledgement (tsize = 145744)
> and also blksize option acknowledgement (blksize = 1408).

That is normal... in fact the protocol only allows one OACK.

You can use the -r option to tftp-hpa to specifically reject any
particular option, so you can see if removing one or both of the options
makes any difference.


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