[syslinux] tftp open timeout but with no server side errors

[Christopher Deneen]

Background,

Client - realtek rtl8111c
tftpd version is 5.0
options on use -l -v

Client:

PXE-EX32 TFTP Open Timeout

Server:

Jun 12 10:48:38 damar in.tftpd[30132]: RRQ from 192.168.1.107 filename
gpxelinux.0
Jun 12 10:48:48 damar in.tftpd[30133]: RRQ from 192.168.1.107 filename
gpxelinux.0
Jun 12 10:49:24 damar in.tftpd[30134]: RRQ from 192.168.1.107 filename
gpxelinux.0
Jun 12 10:50:36 damar in.tftpd[30135]: RRQ from 192.168.1.107 filename
gpxelinux.0
etc.

The client has a valid ip and the server can communicate , tftpd-hpa
tries to send it the file multiple times
but it appears that it does not receive it. In order to get more
information I tried atftpd which has more detailed logging
and it reports continuous timeouts.

I was wondering if anyone has experienced this problem before or has
any suggestions. I'd like to note
this machine is identical to 40 other machines , to which about half boot.