From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexander Holler <holler@ahsoftware.de>
Date: Fri, 18 Jan 2013 12:36:28 +0100
Subject: [U-Boot] Slow tftp boot with Ubuntu 12.04 tftp server
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Am 18.01.2013 11:16, schrieb David Aldrich:
> 
>> Try setting the max. blocksize explicit, e.g. I'm using -B 1460 here. It depends
>> on the used tftp-server.
> 
> Hi Alexander
>  
> Thanks for your reply.  Please will you confirm the exact syntax?  I tried:
> 
> # tftp -B 1460 0x80000200 tci6614-evm.dtb
> tftpboot - boot image via network using TFTP protocol
> 
> Usage:
> tftpboot [loadAddress] [[hostIPaddr:]bootfilename]
> 
> I also tried:
> 
> setenv tftpblocksize 1460
> 
> but that made no difference.
> 
> What is the correct way of specifying the block size please?

That -B n is an option for the server, which is in my case (not Ubuntu)
called in.tftpd and comes from the package tftpd-hpa (a Linux port of
the OpenBSD TFTP server).

So you have to change that on your Ubuntu box.

Regards,

Alexander