tftp - bad checksum error? can't transfer file

Marco Steinbach coco at
Tue Jul 12 03:09:52 UTC 2011

Marco Steinbach schrieb:
> Anton Shterenlikht schrieb:
>> I'm trying to troubleshoot tftpd(8).
>> % grep boot /etc/inetd.conf
>> tftp   dgram udp  wait root /usr/libexec/tftpd  tftpd -dd -l -s /tftpboot
>> tftp   dgram udp  wait root /usr/libexec/tftpd  tftpd -dd -l -s /tftpboot
>> bootps dgram udp  wait root /usr/libexec/bootpd bootpd -d4 -t0 
>> /etc/bootptab
>> %
>> I'm trying to boot another node via bootp/tftp.
>> I'm monitoring what's going on with tcpdump -vv.
>> bootpd starts fine, and seems to read /etc/bootptab
>> correctly.
>> But after that nothing happens, and after a few minutes
>> I get on the console of the host which I want to boot:
>>> bootp()/bsd.rd.IP32
>> Unable to execute bootp()/bsd.rd.IP32:  invalid argument
> [...]
> Last time I saw this error was with an SGI Octance 2, where the Octanes 
> RRQ requests contained trailing garbage, which FreeBSDs tftp tried to 
> interpret as extended options.
> Try disabling options_rfc and options_extra in 
> /usr/src/libexec/tftpd/tftp-options.c, and reinstall tftpd.

Here's another, probably more feasible suggestion:

tftpd(8)s man page (on 8.2-STABLE) tells:

      -o      Disable support for RFC2347 style TFTP Options.

I don't remember, if that knob didn't do the trick for me, or if I just 
didn't see and try it.  I assume the latter.

MfG CoCo

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